| 1 | #!/usr/bin/perl |
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| 2 | |
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| 3 | use strict; |
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| 4 | |
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| 5 | use Getopt::Std; |
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| 6 | use IO::File; |
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| 7 | use IO::Dir; |
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| 8 | use IO::Pipe; |
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| 9 | use File::Copy; |
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| 10 | |
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| 11 | my @scripts = ("federate.sh", "smbmount.pl", "make_hosts", "fed-tun.pl"); |
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| 12 | my $local_script_dir = "."; |
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| 13 | my($pid, $gid); # Process and group IDs for calling parse.tcl |
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| 14 | my $splitter_config; # Configuration file |
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| 15 | my $debug; # True if thecalled in debug mode |
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| 16 | my $verbose; # True for extra progress reports |
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| 17 | my $startem; # If true, start the sub-experiments |
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| 18 | my $eid; # Experiment ID |
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| 19 | my $tcl; # The experiment description (topology file) |
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| 20 | my $master; # Master testbed |
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| 21 | my $tmpdir; # tmp files |
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| 22 | my $tb_config; # testbed configurations |
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| 23 | my $smb_share; # Share to mount from the master |
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| 24 | my $project_user; # User to mount project dirs as |
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| 25 | my($gw_pubkey, $gw_pubkey_base);# Connector pubkey (full path & basename) |
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| 26 | my($gw_secretkey, $gw_secretkey_base);# Connector secret key (full path & |
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| 27 | # basename) |
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| 28 | my $tcl_splitter; # tcl program to split experiments |
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| 29 | # (changed during devel) |
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| 30 | my $tclsh; # tclsh to call directly (changed during devel) |
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| 31 | my @tarfiles; # Tarfiles in use by this experiment |
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| 32 | my @rpms; # Rpms in use by this experiment |
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| 33 | my $timeout; # The timeout to use for experiment swap ins |
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| 34 | my %opts; # Parsed options |
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| 35 | |
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| 36 | my $tbparams = {}; # Map of the per-testbed parameters from the |
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| 37 | # testbeds file. It is a reference to a hash |
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| 38 | # of hashes (because it's passed around a bunch |
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| 39 | # and it's nicer to have one access pattern |
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| 40 | # throughout the script, in the main loop and |
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| 41 | # the subroutines). That access is exemplified |
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| 42 | # by $tbparams->{'deter'}->{'domain'} which is |
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| 43 | # the domain parameter of the DETER testbed. |
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| 44 | my $fail_soft; # Do not swap failed sub-experiments out |
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| 45 | my $max_children=1; # Maximum number of simultaneous swap-ins |
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| 46 | |
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| 47 | # Parse the config file. The format is a colon-separated parameter name |
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| 48 | # followed by the value of that parameter to the end of the line. This parses |
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| 49 | # that format and puts the parameters into the referenced hash. Parameter |
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| 50 | # names are mapped to lower case, parameter values are unchanged. Returns 0 on |
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| 51 | # failure (e.g. file open) and 1 on success. |
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| 52 | sub parse_config { |
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| 53 | my($file, $href) = @_; |
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| 54 | my $fh = new IO::File($file); |
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| 55 | |
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| 56 | unless ($fh) { |
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| 57 | warn "Can't open $file: $!\n"; |
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| 58 | return 0; |
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| 59 | } |
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| 60 | |
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| 61 | while (<$fh>) { |
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| 62 | next if /^\s*#/ || /^\s*$/; # Skip comments & blanks |
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| 63 | chomp; |
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| 64 | /^([^:]+):\s*(.*)/ && do { |
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| 65 | my $key = $1; |
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| 66 | |
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| 67 | $key =~ tr/A-Z/a-z/; |
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| 68 | $href->{$key} = $2; |
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| 69 | next; |
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| 70 | }; |
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| 71 | warn "Unparasble line in $file: $_\n"; |
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| 72 | } |
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| 73 | $fh->close(); # It will close when it goes out of scope, but... |
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| 74 | return 1; |
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| 75 | } |
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| 76 | |
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| 77 | # Parse an easier-to-read testbeds file (the original was comma-separated |
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| 78 | # unadorned strings). The format is a testbed scope as [testbed] followed by |
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| 79 | # the colon-separated attribute-value pairs for the testbed. Right now these |
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| 80 | # go into a set of global hashes indexed by testbed, but that should probably |
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| 81 | # change. |
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| 82 | |
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| 83 | sub parse_testbeds { |
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| 84 | my($file, $tbparams) = @_; # Testbeds file and parameter hash |
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| 85 | my $fh = new IO::File($file); # Testbeds filehandle |
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| 86 | my $tb; # Current testbed |
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| 87 | # Convert attribute in the file to tbparams hash key |
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| 88 | my %attr_to_hash = ( |
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| 89 | "opsnode" => "host", |
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| 90 | "user" => "user", |
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| 91 | "domain" => "domain", |
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| 92 | "project" => "project", |
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| 93 | "connectortype" => "gwtype", |
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| 94 | "slavenodestartcmd" => "expstart", |
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| 95 | "slaveconnectorstartcmd" => "gwstart", |
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| 96 | "masternodestartcmd" => "mexpstart", |
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| 97 | "masterconnectorstartcmd" => "mgwstart", |
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| 98 | "connectorimage" => "gwimage", |
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| 99 | "fileserver" => "fs", |
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| 100 | "boss" => "boss", |
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| 101 | "tunnelcfg" => "tun" |
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| 102 | ); |
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| 103 | |
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| 104 | |
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| 105 | unless ($fh) { |
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| 106 | warn "Can't open $file: $!\n"; |
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| 107 | return 0; |
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| 108 | } |
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| 109 | |
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| 110 | while (<$fh>) { |
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| 111 | next if /^\s*#/ || /^\s*$/; # Skip comments & blanks |
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| 112 | chomp; |
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| 113 | /^\s*\[(.*)\]/ && do { |
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| 114 | $tb = $1; |
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| 115 | $tbparams->{$tb} = {} unless $tbparams->{$tb}; |
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| 116 | next; |
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| 117 | }; |
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| 118 | |
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| 119 | /^([^:]+):\s*(.*)/ && do { |
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| 120 | unless ($tb) { |
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| 121 | warn "Ignored attribute definition before testbed " . |
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| 122 | "defined in $file: $_\n"; |
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| 123 | next; |
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| 124 | } |
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| 125 | my $key = $1; |
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| 126 | $key =~ tr/A-Z/a-z/; |
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| 127 | my $var = $attr_to_hash{$key}; |
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| 128 | |
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| 129 | if ($var) { $tbparams->{$tb}->{$var} = $2; } |
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| 130 | else { warn "Unknown keyword $key in $file\n"; } |
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| 131 | |
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| 132 | next; |
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| 133 | }; |
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| 134 | warn "Unparasble line in $file: $_\n"; |
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| 135 | } |
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| 136 | $fh->close(); # It will close when it goes out of scope, but... |
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| 137 | return 1; |
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| 138 | } |
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| 139 | |
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| 140 | |
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| 141 | # use scp to transfer a file, reporting true if successful and false otherwise. |
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| 142 | # Parameters are the local file name, the ssh host destination (either hostname |
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| 143 | # oe user@host), and an optional destination file name or directory. If no |
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| 144 | # destination is given, the file is transferred to the given user's home |
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| 145 | # directory. If only a machine is given in the ssh host destination, the |
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| 146 | # current user is used. |
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| 147 | sub scp_file { |
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| 148 | my($file, $user, $host, $dest) = @_; |
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| 149 | |
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| 150 | # XXX system with a relative pathname is sort of gross |
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| 151 | system("scp $file $user\@$host:$dest"); |
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| 152 | if ($?) { |
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| 153 | warn "scp failed $?\n"; |
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| 154 | return 0; |
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| 155 | } |
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| 156 | else { return 1; } |
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| 157 | } |
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| 158 | |
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| 159 | # use ssh to execute the given command on the machine (and as the user) in |
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| 160 | # $where. Parameters are the ssh destination directive ($where) and the |
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| 161 | # command to execute, and a prefix to be placed on a message generated if the |
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| 162 | # command fails. On failure print a warning if a warning prefix was given and |
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| 163 | # return false. If timeout is given fork a process and set an alarm of that |
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| 164 | # many seconds. Timeouts also return 0; |
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| 165 | sub ssh_cmd { |
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| 166 | my($user, $host, $cmd, $wname, $timeout) = @_; |
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| 167 | my $pid; # Child pid |
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| 168 | |
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| 169 | $timeout = 0 unless $timeout; # Force default timeout |
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| 170 | |
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| 171 | if ( $pid = fork () ) { |
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| 172 | # Parent process |
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| 173 | # The eval acts as a signal catcher. If the alarm goes off inside |
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| 174 | # the eval, the die will put "alarm\n" into $@, otherwise the |
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| 175 | # return value of the execution in the child process will be used. |
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| 176 | my $rv = eval { |
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| 177 | local $SIG{'ALRM'} = sub{ die "alarm\n"; }; |
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| 178 | my $rv; |
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| 179 | |
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| 180 | alarm $timeout; |
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| 181 | $rv = waitpid($pid, 0); |
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| 182 | alarm 0; |
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| 183 | $rv; |
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| 184 | }; |
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| 185 | |
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| 186 | # If the eval succeeded, $@ will be null and we can use $rv, which |
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| 187 | # is the return code from the subprocess. If the eval timed out, |
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| 188 | # print a warning and assume the best. |
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| 189 | if ($@ eq "alarm\n" ) { |
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| 190 | warn "$wname timed out - pid $pid still live\n"; |
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| 191 | return 1; |
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| 192 | } |
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| 193 | else { |
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| 194 | return $rv; |
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| 195 | } |
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| 196 | } |
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| 197 | else { |
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| 198 | # Child process |
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| 199 | exec("ssh $user\@$host $cmd"); |
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| 200 | exit 0; |
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| 201 | } |
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| 202 | } |
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| 203 | |
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| 204 | # Ship local copies of the federation scripts out to the given host. If any of |
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| 205 | # the script transfers fails, return 0. The scripts to transfer are from the |
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| 206 | # global @scripts and are found locally in $local_script_dir (another global). |
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| 207 | sub ship_scripts { |
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| 208 | my($host, $user, $dest_dir) = @_; # Where, who, where remotely |
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| 209 | my $s; |
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| 210 | |
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| 211 | &ssh_cmd($user, $host, "mkdir -p $dest_dir"); |
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| 212 | for $s (@scripts) { |
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| 213 | &scp_file("$local_script_dir/$s", $user, $host, $dest_dir) || |
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| 214 | return 0; |
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| 215 | } |
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| 216 | return 1; |
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| 217 | } |
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| 218 | |
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| 219 | # Ship per-testbed configuration generated by this script to the remote /proj |
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| 220 | # directories on the remote testbeds |
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| 221 | sub ship_configs { |
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| 222 | my($host, $user, $src_dir, $dest_dir) = @_; # Where, who, where remotely |
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| 223 | my($d, $f); |
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| 224 | |
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| 225 | $d = IO::Dir->new($src_dir) || return 0; |
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| 226 | |
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| 227 | # All directories under $tmpdir are 770 so we can delete them later. |
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| 228 | &ssh_cmd($user, $host, "mkdir -p $dest_dir") || return 0; |
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| 229 | &ssh_cmd($user, $host, "chmod 770 $dest_dir") || return 0; |
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| 230 | while ( $f = $d->read()) { |
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| 231 | next if $f =~ /^\./; |
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| 232 | if ( -d "$src_dir/$f" ) { |
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| 233 | &ship_configs($host, $user, "$src_dir/$f", "$dest_dir/$f") || |
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| 234 | return 0; |
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| 235 | } |
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| 236 | else { |
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| 237 | &scp_file("$src_dir/$f", $user, $host, $dest_dir) || return 0; |
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| 238 | } |
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| 239 | } |
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| 240 | return 1; |
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| 241 | } |
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| 242 | |
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| 243 | # Start a sub section of the experiment on a given testbed. The testbed and |
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| 244 | # the user to start the experiment as are pulled from the global per-testbed |
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| 245 | # hash, passed in as $tbparams, as is the project name on the remote testbed. |
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| 246 | # Parameters are the testbed and the experiment id. Configuration files are |
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| 247 | # scp-ed over to the target testbed from the global $tmpdir/$tb directory. |
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| 248 | # Then the current state of the experiment determined using expinfo. From that |
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| 249 | # state, the experiment is either created, modified or spapped in. If |
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| 250 | # everything succeeds, true is returned. If the global verbose is set progress |
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| 251 | # messages are printed. |
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| 252 | sub start_segment { |
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| 253 | my($tb, $eid, $tbparams, $timeout) = @_;# testbed, experiment ID, |
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| 254 | # per-testbed parameters and remote |
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| 255 | # swap-in timeout |
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| 256 | my $host = # Host name of remote ops (FQDN) |
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| 257 | $tbparams->{$tb}->{'host'} . $tbparams->{$tb}->{'domain'}; |
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| 258 | my $user = $tbparams->{$tb}->{'user'}; # user to pass to ssh |
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| 259 | my $pid = $tbparams->{$tb}->{'project'};# remote project to start the |
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| 260 | # experiment under |
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| 261 | my $tclfile = "./$eid.$tb.tcl"; # Local tcl file with the |
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| 262 | # sub-experiment |
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| 263 | my $proj_dir = "/proj/$pid/exp/$eid/tmp"; # Where to stash federation stuff |
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| 264 | my $tarfiles_dir = "/proj/$pid/tarfiles/$eid"; # Where to stash tarfiles |
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| 265 | my $rpms_dir = "/proj/$pid/rpms/$eid"; # Where to stash rpms |
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| 266 | my $to_hostname = "$proj_dir/hosts"; # remote hostnames file |
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| 267 | my $state; # State of remote experiment |
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| 268 | my $status = new IO::Pipe; # The pipe to get status |
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| 269 | |
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| 270 | # Determine the status of the remote experiment |
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| 271 | $status->reader("ssh $user\@$host /usr/testbed/bin/expinfo $pid $eid") || |
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| 272 | die "Can't ssh to $user\@$host:$!\n"; |
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| 273 | |
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| 274 | # XXX: this is simple now. Parsing may become more complex |
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| 275 | while (<$status>) { |
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| 276 | /State: (\w+)/ && ($state = $1); |
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| 277 | /No\s+such\s+experiment/ && ($state = "none"); |
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| 278 | } |
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| 279 | $status->close(); |
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| 280 | print "$tb: $state\n"; |
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| 281 | |
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| 282 | # Copy the experiment definition data over |
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| 283 | print "transferring subexperiment to $tb\n" if $verbose; |
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| 284 | &scp_file("$tmpdir/$tb/$tclfile", $user, $host) || return 0; |
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| 285 | # Clear out any old experiment data; if not deleted, copies over it by |
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| 286 | # different users will fail. |
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| 287 | # (O /bin/csh, how evil thou art. The -c and the escaped single quotes |
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| 288 | # force the /bin/sh interpretation of the trailing * (which we need to keep |
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| 289 | # tmp around)) Again, this needs to be done more properly once we have a |
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| 290 | # non-ssh interface here.) |
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| 291 | print "clearing experiment subdirs on $tb\n" if $verbose; |
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| 292 | &ssh_cmd($user, $host, "/bin/sh -c \\'/bin/rm -rf $proj_dir/*\\'") || |
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| 293 | return 0; |
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| 294 | print "clearing experiment tarfiles subdirs on $tb\n" if $verbose; |
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| 295 | &ssh_cmd($user, $host, "/bin/rm -rf $tarfiles_dir/") || |
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| 296 | return 0; |
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| 297 | print "creating tarfiles subdir $tarfiles_dir on $tb\n" if $verbose; |
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| 298 | &ssh_cmd($user, $host, "mkdir -p $tarfiles_dir", "create tarfiles") || |
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| 299 | return 0; |
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| 300 | print "clearing experiment rpms subdirs on $tb\n" if $verbose; |
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| 301 | &ssh_cmd($user, $host, "/bin/rm -rf $rpms_dir/") || |
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| 302 | return 0; |
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| 303 | print "creating rpms subdir $rpms_dir on $tb\n" if $verbose; |
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| 304 | &ssh_cmd($user, $host, "mkdir -p $rpms_dir", "create rpms") || |
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| 305 | return 0; |
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| 306 | # Remote experiment is active. Modify it. |
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| 307 | if ($state eq "active") { |
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| 308 | print "Transferring federation support files to $tb\n" if $verbose; |
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| 309 | # First copy new scripts and hostinfo into the remote /proj |
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| 310 | &scp_file("$tmpdir/hostnames", $user, $host, $to_hostname) || |
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| 311 | return 0; |
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| 312 | &ship_scripts($host, $user, $proj_dir) || return 0; |
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| 313 | &ship_configs($host, $user, "$tmpdir/$tb", $proj_dir) || return 0; |
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| 314 | |
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| 315 | if ( -d "$tmpdir/tarfiles") { |
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| 316 | &ship_configs($host, $user, "$tmpdir/tarfiles", $tarfiles_dir) || |
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| 317 | return 0; |
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| 318 | } |
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| 319 | |
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| 320 | if ( -d "$tmpdir/rpms") { |
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| 321 | &ship_configs($host, $user, "$tmpdir/rpms", $rpms_dir) || |
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| 322 | return 0; |
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| 323 | } |
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| 324 | |
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| 325 | print "Modifying $eid in place on $tb\n" if $verbose; |
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| 326 | &ssh_cmd($user, $host, "/usr/testbed/bin/modexp -r -s -w $pid " . |
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| 327 | "$eid $tclfile", "modexp", $timeout) || return 0; |
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| 328 | return 1; |
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| 329 | } |
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| 330 | |
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| 331 | # Remote experiment is swapped out, modify it and swap it in. |
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| 332 | if ($state eq "swapped") { |
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| 333 | print "Transferring federation support files to $tb\n" if $verbose; |
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| 334 | # First copy new scripts and hostinfo into the remote /proj (because |
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| 335 | # the experiment exists, the directory tree should be there. |
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| 336 | &scp_file("$tmpdir/hostnames", $user, $host, $to_hostname) || |
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| 337 | return 0; |
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| 338 | &ship_scripts($host, $user, $proj_dir) || return 0; |
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| 339 | &ship_configs($host, $user, "$tmpdir/$tb", $proj_dir) || return 0; |
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| 340 | if ( -d "$tmpdir/tarfiles") { |
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| 341 | &ship_configs($host, $user, "$tmpdir/tarfiles", $tarfiles_dir) || |
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| 342 | return 0; |
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| 343 | } |
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| 344 | |
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| 345 | if ( -d "$tmpdir/rpms") { |
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| 346 | &ship_configs($host, $user, "$tmpdir/rpms", $rpms_dir) || |
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| 347 | return 0; |
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| 348 | } |
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| 349 | |
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| 350 | print "Modifying $eid on $tb\n" if $verbose; |
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| 351 | &ssh_cmd($user, $host, "/usr/testbed/bin/modexp -w $pid $eid $tclfile", |
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| 352 | "modexp") || return 0; |
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| 353 | print "Swapping $eid in on $tb\n" if $verbose; |
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| 354 | # Now start up |
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| 355 | &ssh_cmd($user, $host, "/usr/testbed/bin/swapexp -w $pid $eid in", |
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| 356 | "swapexp", $timeout) || return 0; |
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| 357 | return 1; |
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| 358 | } |
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| 359 | |
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| 360 | # No remote experiment. Create one. We do this in 2 steps so we can put |
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| 361 | # the configuration files and scripts into the new experiment directories. |
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| 362 | if ($state eq "none") { |
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| 363 | |
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| 364 | if ( -d "$tmpdir/tarfiles") { |
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| 365 | # Tarfiles have to exist for the creation to work |
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| 366 | print "copying tarfiles to $tb\n"; |
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| 367 | &ship_configs($host, $user, "$tmpdir/tarfiles", $tarfiles_dir) || |
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| 368 | return 0; |
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| 369 | } |
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| 370 | |
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| 371 | if ( -d "$tmpdir/rpms") { |
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| 372 | &ship_configs($host, $user, "$tmpdir/rpms", $rpms_dir) || |
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| 373 | return 0; |
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| 374 | } |
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| 375 | |
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| 376 | print "Creating $eid on $tb\n" if $verbose; |
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| 377 | &ssh_cmd($user, $host, "/usr/testbed/bin/startexp -i -f -w -p " . |
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| 378 | "$pid -e $eid $tclfile", "startexp") || return 0; |
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| 379 | # After startexp succeeds, the per-experiment directories exist on the |
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| 380 | # remote testbed. |
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| 381 | print "Transferring federation support files to $tb\n" if $verbose; |
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| 382 | # First copy new scripts and hostinfo into the remote /proj |
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| 383 | &scp_file("$tmpdir/hostnames", $user, $host, $to_hostname) || |
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| 384 | return 0; |
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| 385 | &ship_scripts($host, $user, $proj_dir) || return 0; |
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| 386 | &ship_configs($host, $user, "$tmpdir/$tb", $proj_dir) || return 0; |
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| 387 | # Now start up |
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| 388 | print "Swapping $eid in on $tb\n" if $verbose; |
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| 389 | &ssh_cmd($user, $host, "/usr/testbed/bin/swapexp -w $pid $eid in", |
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| 390 | "swapexp", $timeout) || return 0; |
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| 391 | return 1; |
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| 392 | } |
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| 393 | |
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| 394 | # Every branch for a known state returns. If execution gets here, the |
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| 395 | # state is unknown. |
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| 396 | warn "unknown state: $state\n"; |
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| 397 | return 0; |
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| 398 | } |
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| 399 | |
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| 400 | # Swap out a sub-experiment - probably because another has failed. Arguments |
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| 401 | # are testbed and experiment. Most of the control flow is similar to |
|---|
| 402 | # start_segment, though much simpler. |
|---|
| 403 | sub stop_segment { |
|---|
| 404 | my($tb, $eid, $tbparams) = @_; # testbed, experiment ID and |
|---|
| 405 | # per-testbed parameters |
|---|
| 406 | my $user = $tbparams->{$tb}->{'user'}; # testbed user |
|---|
| 407 | my $host = # Ops node |
|---|
| 408 | $tbparams->{$tb}->{'host'} . $tbparams->{$tb}->{'domain'}; |
|---|
| 409 | my $pid = $tbparams->{$tb}->{'project'};# testbed project |
|---|
| 410 | |
|---|
| 411 | print "Stopping $eid on $tb\n" if $verbose; |
|---|
| 412 | &ssh_cmd($user, $host, "/usr/testbed/bin/swapexp -w $pid $eid out", |
|---|
| 413 | "swapexp (out)") || return 0; |
|---|
| 414 | return 1; |
|---|
| 415 | } |
|---|
| 416 | |
|---|
| 417 | |
|---|
| 418 | $pid = $gid = "dummy"; # Default project and group to pass to |
|---|
| 419 | # $tcl_splitter above. These are total |
|---|
| 420 | # dummy arguments; the splitter doesn't |
|---|
| 421 | # use them at all, but we supply them to |
|---|
| 422 | # keep our changes to the parser minimal. |
|---|
| 423 | # Argument processing. |
|---|
| 424 | getopts('Ft:c:p:f:ndvN', \%opts); |
|---|
| 425 | $splitter_config = $opts{'c'} || "./splitter.conf"; |
|---|
| 426 | $debug = $opts{'d'}; |
|---|
| 427 | $verbose = $opts{'v'} || $opts{'d'}; |
|---|
| 428 | |
|---|
| 429 | &parse_config("$splitter_config", \%opts) || |
|---|
| 430 | die "Cannot read config file $splitter_config: $!\n"; |
|---|
| 431 | |
|---|
| 432 | warn "-N does nothing now. Only one testbeds format supported.\n" |
|---|
| 433 | if $opts{'N'}; |
|---|
| 434 | $fail_soft = $opts{'F'} || $opts{'failsoft'}; |
|---|
| 435 | $startem = $opts{'n'} ? 0 : 1; # If true, start the sub-experiments |
|---|
| 436 | $timeout = $opts{'t'} || $opts{'timeout'}; |
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| 437 | $eid = $opts{'experiment'}; # Experiment ID |
|---|
| 438 | $tcl = $opts{'f'} || shift; # The experiment description |
|---|
| 439 | $master = $opts{'master'}; # Master testbed |
|---|
| 440 | $tmpdir = $opts{'tmpdir'} || $opts{'tempdir'}|| "/tmp"; # tmp files |
|---|
| 441 | $tb_config = $opts{'testbeds'} || "./testbeds"; # testbed configurations |
|---|
| 442 | $local_script_dir = $opts{'scriptdir'}; # Local scripts |
|---|
| 443 | |
|---|
| 444 | $max_children = $opts{'p'} || $opts{'maxchildren'} |
|---|
| 445 | if $opts{'p'} || $opts{'maxchildren'}; |
|---|
| 446 | |
|---|
| 447 | $smb_share = $opts{'smbshare'} || # Share to mount from the master |
|---|
| 448 | die "Must give an SMB share\n"; |
|---|
| 449 | $project_user = $opts{'smbuser'} || # User to mount project dirs as |
|---|
| 450 | die "Must give an SMB user\n"; |
|---|
| 451 | |
|---|
| 452 | # For now specify these. We may want to generate them later. |
|---|
| 453 | $gw_pubkey = $opts{'gatewaypubkey'}; |
|---|
| 454 | ($gw_pubkey_base = $gw_pubkey) =~ s#.*/##; |
|---|
| 455 | $gw_secretkey = $opts{'gatewaysecretkey'}; |
|---|
| 456 | ($gw_secretkey_base = $gw_secretkey) =~ s#.*/##; |
|---|
| 457 | |
|---|
| 458 | # tcl program to split experiments (changed during devel) |
|---|
| 459 | $tcl_splitter = $opts{'tclparse'} || "/usr/testbed/lib/ns2ir/parse.tcl"; |
|---|
| 460 | # tclsh to call directly (changed during devel) |
|---|
| 461 | $tclsh = $opts{'tclsh'} || "/usr/local/bin/otclsh"; |
|---|
| 462 | |
|---|
| 463 | # Prefix to avoid collisions |
|---|
| 464 | $tmpdir .= "/split$$"; |
|---|
| 465 | |
|---|
| 466 | print "Temp files are in $tmpdir\n" if $verbose; |
|---|
| 467 | # Create a workspace |
|---|
| 468 | unless (-d "$tmpdir") { |
|---|
| 469 | mkdir("$tmpdir") || die "Can't create $tmpdir: $!"; |
|---|
| 470 | } |
|---|
| 471 | |
|---|
| 472 | # Validate scripts directory |
|---|
| 473 | for my $s (@scripts) { |
|---|
| 474 | die "$local_script_dir/$s not in local script directory. Try -d\n" |
|---|
| 475 | unless -r "$local_script_dir/$s"; |
|---|
| 476 | } |
|---|
| 477 | |
|---|
| 478 | die "Must supply file, master and experiment" unless $master && $tcl && $eid; |
|---|
| 479 | |
|---|
| 480 | &parse_testbeds($tb_config, $tbparams) || |
|---|
| 481 | die "Cannot testbed congfigurations from $tb_config: $!\n"; |
|---|
| 482 | |
|---|
| 483 | # Open a pipe to the splitter program and start it parsing the experiments |
|---|
| 484 | my $pipe = new IO::Pipe; |
|---|
| 485 | # NB no more -p call on parse call. |
|---|
| 486 | $pipe->reader("$tclsh $tcl_splitter -s -m $master $pid $gid $eid $tcl") || |
|---|
| 487 | die "Cannot execute $tclsh $tcl_splitter -s -m $master $pid $gid $eid $tcl:$!\n"; |
|---|
| 488 | |
|---|
| 489 | # Parsing variables |
|---|
| 490 | my $ctb; # Current testbed |
|---|
| 491 | my %allocated; # If allocated{$tb} > 0, $tb is in use |
|---|
| 492 | my $destfile; # File that the sub-experiment tcl file is |
|---|
| 493 | # being written to, or "" if none. Also used |
|---|
| 494 | # for hostnames file. |
|---|
| 495 | my $desthandle; # File handle for distfile |
|---|
| 496 | my $gateways; # when gateway lists are being processed this |
|---|
| 497 | # is the testbed whose gateways are being |
|---|
| 498 | # gathered. |
|---|
| 499 | my $control_gateway; # Control net gateway for the current testbed |
|---|
| 500 | my %active_end; # If active_end{"a-b"} > 0 then a is the active |
|---|
| 501 | # end of the a <-> b connector pair. |
|---|
| 502 | |
|---|
| 503 | # Parse the splitter output. This loop creates the sub experiments, gateway |
|---|
| 504 | # configurations and hostnames file |
|---|
| 505 | while (<$pipe>) { |
|---|
| 506 | # Start of a sub-experiment |
|---|
| 507 | /^#\s+Begin\s+Testbed\s+\((\w+)\)/ && do { |
|---|
| 508 | $ctb = $1; |
|---|
| 509 | |
|---|
| 510 | # If we know the testbed, start collecting its sub experiment tcl |
|---|
| 511 | # description. If not, warn the caller and ignore the configuration of |
|---|
| 512 | # this testbed. |
|---|
| 513 | if ($tbparams->{$ctb}) { |
|---|
| 514 | $allocated{$ctb}++; # Keep track of the testbeds allocated |
|---|
| 515 | |
|---|
| 516 | unless (-d "$tmpdir/$ctb") { |
|---|
| 517 | mkdir("$tmpdir/$ctb") || die "Can't create $tmpdir/$ctb: $!"; |
|---|
| 518 | } |
|---|
| 519 | $destfile = "$tmpdir/$ctb/$eid.$ctb.tcl"; |
|---|
| 520 | |
|---|
| 521 | $desthandle = new IO::File(">$destfile") || |
|---|
| 522 | die "Cannot open $destfile:$!\n"; |
|---|
| 523 | } |
|---|
| 524 | else { |
|---|
| 525 | warn "No such testbed $ctb\n"; |
|---|
| 526 | $destfile = ""; |
|---|
| 527 | } |
|---|
| 528 | next; |
|---|
| 529 | }; |
|---|
| 530 | |
|---|
| 531 | # End of that experiment |
|---|
| 532 | /^#\s+End\s+Testbed\s+\((\w+)\)/ && do { |
|---|
| 533 | # Simple syntax check and close out this experiment's tcl description |
|---|
| 534 | die "Mismatched testbed markers ($1, $ctb)\n" unless ($1 eq $ctb); |
|---|
| 535 | $desthandle->close(); |
|---|
| 536 | $destfile = $ctb = ""; |
|---|
| 537 | next; |
|---|
| 538 | }; |
|---|
| 539 | |
|---|
| 540 | # Beginning of a gateway set |
|---|
| 541 | /^#\s+Begin\s+gateways\s+\((\w+)\)/ && do { |
|---|
| 542 | $gateways = $1; |
|---|
| 543 | # If we've heard of this tb, create the config lines for it one at a |
|---|
| 544 | # time. |
|---|
| 545 | if ($allocated{$gateways}) { |
|---|
| 546 | # Just in case. This directory should already have been created |
|---|
| 547 | # above. |
|---|
| 548 | unless (-d "$tmpdir/$gateways") { |
|---|
| 549 | mkdir("$tmpdir/$gateways") || |
|---|
| 550 | die "Can't create $tmpdir/$gateways: $!"; |
|---|
| 551 | } |
|---|
| 552 | } |
|---|
| 553 | else { |
|---|
| 554 | warn "Gateways given (and ignored) for testbed not in use: " . |
|---|
| 555 | "$gateways\n"; |
|---|
| 556 | $gateways = 0; |
|---|
| 557 | } |
|---|
| 558 | next; |
|---|
| 559 | }; |
|---|
| 560 | # End of the gateways section. Output the client config for this testbed |
|---|
| 561 | /^#\s+End\s+gateways\s+\((\w+)\)/ && do { |
|---|
| 562 | die "Mismatched gateway markers ($1, $gateways)\n" |
|---|
| 563 | unless !$gateways || $gateways == $1; |
|---|
| 564 | |
|---|
| 565 | if ($control_gateway ) { |
|---|
| 566 | # Client config |
|---|
| 567 | my $cc = new IO::File(">$tmpdir/$gateways/client.conf"); |
|---|
| 568 | my $master_project = $tbparams->{$master}->{'project'}; |
|---|
| 569 | die "Can't open $tmpdir/$gateways/client.conf: $!\n" unless $cc; |
|---|
| 570 | print $cc "ControlGateway: $control_gateway\n"; |
|---|
| 571 | print $cc "SMBShare: $smb_share\n"; |
|---|
| 572 | print $cc "ProjectUser: $project_user\n"; |
|---|
| 573 | print $cc "ProjectName: $master_project\n"; |
|---|
| 574 | $cc->close(); |
|---|
| 575 | } |
|---|
| 576 | else { warn "No control gateway for $gateways?\n"; } |
|---|
| 577 | |
|---|
| 578 | $gateways = 0; |
|---|
| 579 | next; |
|---|
| 580 | }; |
|---|
| 581 | # Beginning of the hostnames list. Collection is always in the hostnames |
|---|
| 582 | # file. |
|---|
| 583 | /^#\s+Begin\s+hostnames/ && do { |
|---|
| 584 | $destfile = "$tmpdir/hostnames"; |
|---|
| 585 | $desthandle = new IO::File(">$destfile") || |
|---|
| 586 | die "Can't open $destfile:$!\n"; |
|---|
| 587 | next; |
|---|
| 588 | }; |
|---|
| 589 | # end of the hostnames list. |
|---|
| 590 | /^#\s+End\s+hostnames/ && do { |
|---|
| 591 | $desthandle->close(); |
|---|
| 592 | $destfile = ""; |
|---|
| 593 | next; |
|---|
| 594 | }; |
|---|
| 595 | |
|---|
| 596 | # Generate gateway configuration info, one file per line |
|---|
| 597 | $gateways && do { |
|---|
| 598 | chomp; |
|---|
| 599 | my($dtb, $myname, $desthost, $type) = split(" ", $_); |
|---|
| 600 | |
|---|
| 601 | # Many of these are to simplify print statements |
|---|
| 602 | my $sdomain = # domain for the source |
|---|
| 603 | $tbparams->{$gateways}->{'domain'}; |
|---|
| 604 | my $ddomain = # domain for the destination |
|---|
| 605 | $tbparams->{$dtb}->{'domain'}; |
|---|
| 606 | my $sproject = # Project of the destination |
|---|
| 607 | $tbparams->{$gateways}->{'project'}; |
|---|
| 608 | my $fs = # Master fs node (FQDN) |
|---|
| 609 | $tbparams->{$master}->{'fs'} . $tbparams->{$master}->{'domain'}; |
|---|
| 610 | my $boss = # Master boss node (FQDN) |
|---|
| 611 | $tbparams->{$master}->{'boss'} . $tbparams->{$master}->{'domain'}; |
|---|
| 612 | my $remote_script_dir = # Remote fed script location |
|---|
| 613 | "/proj/" . $tbparams->{$dtb}->{'project'} . "/exp/$eid/tmp"; |
|---|
| 614 | my $active; # Is this the active side of |
|---|
| 615 | # the connector? |
|---|
| 616 | |
|---|
| 617 | $sdomain = ".$eid." . $tbparams->{$gateways}->{'project'} . "$sdomain"; |
|---|
| 618 | $ddomain = ".$eid." . $tbparams->{$dtb}->{'project'} . "$ddomain"; |
|---|
| 619 | |
|---|
| 620 | my $conf_file = "$myname$sdomain.gw.conf"; |
|---|
| 621 | # translate to lower case so the `hostname` hack for specifying |
|---|
| 622 | # configuration files works. |
|---|
| 623 | $conf_file =~ tr/A-Z/a-z/; |
|---|
| 624 | |
|---|
| 625 | # If either end of this link is in the master side of the testbed, that |
|---|
| 626 | # side is the active end. Otherwise the first testbed encountered in |
|---|
| 627 | # the file will be the active end. The $active_end variable keeps |
|---|
| 628 | # track of those decisions |
|---|
| 629 | if ( $dtb eq $master ) { $active = "false"; } |
|---|
| 630 | elsif ($gateways eq $master ) { $active = "true"; } |
|---|
| 631 | elsif ( $active_end{"$dtb-$gateways"} ) { $active="false"; } |
|---|
| 632 | else { $active_end{"$gateways-$dtb"}++; $active = "true"; } |
|---|
| 633 | |
|---|
| 634 | # This is used to create the client configuration. |
|---|
| 635 | $control_gateway = "$myname$sdomain" |
|---|
| 636 | if $type =~ /(control|both)/; |
|---|
| 637 | |
|---|
| 638 | # Write out the file |
|---|
| 639 | my $gwconfig = new IO::File(">$tmpdir/$gateways/$conf_file")|| |
|---|
| 640 | die "can't open $tmpdir/$gateways/$conf_file: $!\n"; |
|---|
| 641 | |
|---|
| 642 | print $gwconfig "Active: $active\n"; |
|---|
| 643 | print $gwconfig "TunnelCfg: " . $tbparams->{$gateways}->{'tun'} . "\n"; |
|---|
| 644 | print $gwconfig "BossName: $boss\n"; |
|---|
| 645 | print $gwconfig "FsName: $fs\n"; |
|---|
| 646 | print $gwconfig "Type: $type\n"; |
|---|
| 647 | print $gwconfig "RemoteScriptDir: $remote_script_dir\n"; |
|---|
| 648 | print $gwconfig "Peer: $desthost$ddomain\n"; |
|---|
| 649 | print $gwconfig "Pubkeys: " . |
|---|
| 650 | "/proj/$sproject/exp/$eid/tmp/$gw_pubkey_base\n"; |
|---|
| 651 | print $gwconfig "Privkeys: " . |
|---|
| 652 | "/proj/$sproject/exp/$eid/tmp/$gw_secretkey_base\n"; |
|---|
| 653 | $gwconfig->close(); |
|---|
| 654 | |
|---|
| 655 | # This testbed has a gateway (most will) so make a copy of the keys it |
|---|
| 656 | # needs in this testbed's subdirectory. start_segment will transfer |
|---|
| 657 | # them. |
|---|
| 658 | unless (-r "$tmpdir/$gateways/$gw_pubkey_base" ) { |
|---|
| 659 | copy($gw_pubkey, "$tmpdir/$gateways/$gw_pubkey_base") || |
|---|
| 660 | die "Can't copy pubkeys ($gw_pubkey to " . |
|---|
| 661 | "$tmpdir/$gateways/$gw_pubkey_base): $!\n"; |
|---|
| 662 | } |
|---|
| 663 | if ($active eq "true" ) { |
|---|
| 664 | unless (-r "$tmpdir/$gateways/$gw_secretkey_base" ) { |
|---|
| 665 | copy($gw_secretkey, "$tmpdir/$gateways/$gw_secretkey_base") || |
|---|
| 666 | die "Can't copy secret keys ($gw_secretkey to " . |
|---|
| 667 | "$tmpdir/$gateways/$gw_secretkey_base): $!\n"; |
|---|
| 668 | } |
|---|
| 669 | } |
|---|
| 670 | |
|---|
| 671 | #done processing gateway entry, ready for next line |
|---|
| 672 | next; |
|---|
| 673 | }; |
|---|
| 674 | (/^#\s+Begin\s+tarfiles/../^#\s+End\s+tarfiles/) && do { |
|---|
| 675 | next if /^#/; |
|---|
| 676 | chomp; |
|---|
| 677 | push(@tarfiles, $_); |
|---|
| 678 | next; |
|---|
| 679 | }; |
|---|
| 680 | (/^#\s+Begin\s+rpms/../^#\s+End\s+rpms/) && do { |
|---|
| 681 | next if /^#/; |
|---|
| 682 | chomp; |
|---|
| 683 | push(@rpms, $_); |
|---|
| 684 | next; |
|---|
| 685 | }; |
|---|
| 686 | |
|---|
| 687 | next unless $destfile; # Unidentified testbed, ignore config |
|---|
| 688 | # local copies that can be used in the substitutions below |
|---|
| 689 | my $gwtype = $tbparams->{$ctb}->{'gwtype'}; |
|---|
| 690 | my $gwimage = $tbparams->{$ctb}->{'gwimage'}; |
|---|
| 691 | my $mgwstart = $tbparams->{$ctb}->{'mgwstart'}; |
|---|
| 692 | my $mexpstart = $tbparams->{$ctb}->{'mexpstart'}; |
|---|
| 693 | my $gwstart = $tbparams->{$ctb}->{'gwstart'}; |
|---|
| 694 | my $expstart = $tbparams->{$ctb}->{'expstart'}; |
|---|
| 695 | my $project = $tbparams->{$ctb}->{'project'}; |
|---|
| 696 | |
|---|
| 697 | # Substitute variables |
|---|
| 698 | s/GWTYPE/$gwtype/g; |
|---|
| 699 | s/GWIMAGE/$gwimage/g; |
|---|
| 700 | if ($ctb eq $master ) { |
|---|
| 701 | s/GWSTART/$mgwstart/g; |
|---|
| 702 | s/EXPSTART/$mexpstart/g; |
|---|
| 703 | } |
|---|
| 704 | else { |
|---|
| 705 | s/GWSTART/$gwstart/g; |
|---|
| 706 | s/EXPSTART/$expstart/g; |
|---|
| 707 | } |
|---|
| 708 | # XXX: oh is this bad |
|---|
| 709 | s#GWCONF#FEDDIR\`hostname\`.gw.conf#g; |
|---|
| 710 | s#PROJDIR#/proj/$project/#g; |
|---|
| 711 | s#EID#$eid#g; |
|---|
| 712 | s#FEDDIR#/proj/$project/exp/$eid/tmp/#g; |
|---|
| 713 | print $desthandle $_; |
|---|
| 714 | } |
|---|
| 715 | $pipe->close(); |
|---|
| 716 | die "No nodes in master testbed ($master)\n" unless $allocated{$master}; |
|---|
| 717 | |
|---|
| 718 | # Copy tarfiles and rpms needed at remote sites to the staging directories. |
|---|
| 719 | # Start_segment will distribute them |
|---|
| 720 | for my $t (@tarfiles) { |
|---|
| 721 | die "tarfile '$t' unreadable: $!\n" unless -r $t; |
|---|
| 722 | unless (-d "$tmpdir/tarfiles") { |
|---|
| 723 | mkdir("$tmpdir/tarfiles") || |
|---|
| 724 | die "Can't create $tmpdir/tarfiles:$!\n"; |
|---|
| 725 | } |
|---|
| 726 | copy($t, "$tmpdir/tarfiles") || |
|---|
| 727 | die "Can't copy $t to $tmpdir/tarfiles:$!\n"; |
|---|
| 728 | } |
|---|
| 729 | |
|---|
| 730 | for my $r (@rpms) { |
|---|
| 731 | die "rpm '$r' unreadable: $!\n" unless -r $r; |
|---|
| 732 | unless (-d "$tmpdir/rpms") { |
|---|
| 733 | mkdir("$tmpdir/rpms") || |
|---|
| 734 | die "Can't create $tmpdir/rpms:$!\n"; |
|---|
| 735 | } |
|---|
| 736 | copy($r, "$tmpdir/rpms") || |
|---|
| 737 | die "Can't copy $r to $tmpdir/rpms:$!\n"; |
|---|
| 738 | } |
|---|
| 739 | |
|---|
| 740 | exit(0) unless $startem; |
|---|
| 741 | |
|---|
| 742 | my %started; # If $started{$tb} then $tb successfully started |
|---|
| 743 | my %child; # If $child{$pid} then a process with that pid is |
|---|
| 744 | # working on a starting a segment |
|---|
| 745 | my $nworking = 0; # Number of children working on swapin |
|---|
| 746 | my $pid; # Scratch variable for pids |
|---|
| 747 | |
|---|
| 748 | # Start up the slave sub-experiments first |
|---|
| 749 | TESTBED: |
|---|
| 750 | for my $tb (keys %allocated) { |
|---|
| 751 | if ( $tb ne $master ) { |
|---|
| 752 | while ( $nworking == $max_children ) { |
|---|
| 753 | print "Waiting for a child process to complete\n" if $verbose; |
|---|
| 754 | if (($pid = wait()) != -1 ) { |
|---|
| 755 | # The $? >> 8 is the exit code of the subprocess, which is |
|---|
| 756 | # non-zero if the &start_segment routine failed. |
|---|
| 757 | my $exit_code = ($? >> 8); |
|---|
| 758 | |
|---|
| 759 | print "Child $pid completed exit code ($exit_code)\n" |
|---|
| 760 | if $verbose; |
|---|
| 761 | $nworking--; |
|---|
| 762 | $started{$child{$pid}}++ unless $exit_code; |
|---|
| 763 | if ($child{$pid} ) { delete $child{$pid}; } |
|---|
| 764 | else { warn "Reaped a pid we did not start?? ($pid)\n"; } |
|---|
| 765 | last TESTBED if $exit_code; |
|---|
| 766 | } |
|---|
| 767 | else { warn "wait returned without reaping: $!\n"; } |
|---|
| 768 | } |
|---|
| 769 | if ( $pid = fork() ) { |
|---|
| 770 | # Parent process |
|---|
| 771 | $nworking ++; |
|---|
| 772 | $child{$pid} = $tb; |
|---|
| 773 | print "Started process $pid to start testbed $tb\n" |
|---|
| 774 | if $verbose; |
|---|
| 775 | } |
|---|
| 776 | else { |
|---|
| 777 | # Child. Note that we reverse the sense of the return code when it |
|---|
| 778 | # becomes an exit value. Zero exit values indicate success. |
|---|
| 779 | exit(!&start_segment($tb, $eid, $tbparams, $timeout)); |
|---|
| 780 | } |
|---|
| 781 | } |
|---|
| 782 | } |
|---|
| 783 | |
|---|
| 784 | # Now wait for any still running processes. |
|---|
| 785 | while ( $nworking ) { |
|---|
| 786 | print "Waiting for a child process to complete ($nworking running)\n" |
|---|
| 787 | if $verbose; |
|---|
| 788 | if (($pid = wait()) != -1 ) { |
|---|
| 789 | # The $? >> 8 is the exit code of the subprocess, which is |
|---|
| 790 | # non-zero if the &start_segment routine failed. |
|---|
| 791 | my $exit_code = ($? >> 8); |
|---|
| 792 | |
|---|
| 793 | print "Child $pid completed exit code ($exit_code)\n" |
|---|
| 794 | if $verbose; |
|---|
| 795 | $nworking--; |
|---|
| 796 | $started{$child{$pid}}++ unless $exit_code; |
|---|
| 797 | if ($child{$pid} ) { delete $child{$pid}; } |
|---|
| 798 | else { warn "Reaped a pid we did not start?? ($pid)\n"; } |
|---|
| 799 | } |
|---|
| 800 | else { warn "wait returned without reaping: $!\n"; } |
|---|
| 801 | } |
|---|
| 802 | |
|---|
| 803 | # Now the master |
|---|
| 804 | if (&start_segment($master, $eid, $tbparams, $timeout)) { |
|---|
| 805 | $started{$master}++; |
|---|
| 806 | } |
|---|
| 807 | |
|---|
| 808 | # If any testbed failed, swap the rest out. |
|---|
| 809 | if ( !$fail_soft && scalar(keys %started) != scalar(keys %allocated)) { |
|---|
| 810 | for my $tb (keys %started) { &stop_segment($tb, $eid, $tbparams); } |
|---|
| 811 | print "Error starting experiment\n"; |
|---|
| 812 | exit(1); |
|---|
| 813 | } |
|---|
| 814 | print "Experiment started\n"; |
|---|
| 815 | print "Deleting $tmpdir (-d to leave them in place)\n" if $verbose && !$debug; |
|---|
| 816 | system("rm -rf $tmpdir") unless $debug; |
|---|
| 817 | exit(0); # set the exit value |
|---|
| 818 | |
|---|
| 819 | =pod |
|---|
| 820 | |
|---|
| 821 | =head1 NAME |
|---|
| 822 | |
|---|
| 823 | B<splitter.pl> |
|---|
| 824 | |
|---|
| 825 | =head1 SYNOPSIS |
|---|
| 826 | |
|---|
| 827 | B<splitter.pl> [B<-ndF>] [B<-t> I<secs>] [B<-c> F<config_file>] |
|---|
| 828 | [B<-f> F<experiment_tcl>] [B<-p> I<max_procs>] [F<experiment_tcl>] |
|---|
| 829 | |
|---|
| 830 | =head1 DESCRIPTION |
|---|
| 831 | |
|---|
| 832 | B<splitter.pl> invokes the DETER experiment parser to split an annotated |
|---|
| 833 | experiment into multiple sub-experments and instantiates the sub-experiments on |
|---|
| 834 | their intended testbeds. Annotation is accomplished using the |
|---|
| 835 | tb-set-node-testbed command, added to the parser. |
|---|
| 836 | |
|---|
| 837 | Much of the script's behavior depends on the configuration file, specified with |
|---|
| 838 | the B<-c> flag and defaulting to F<./splitter.conf>. |
|---|
| 839 | |
|---|
| 840 | The testbed labels supplied in the B<tb-set-node-testbed> command are |
|---|
| 841 | meaningful based on their presence in the testbeds file. that file can be |
|---|
| 842 | specified in the configuration file using the B<Testbeds> directive, and |
|---|
| 843 | defaults to F<./testbeds>. The syntax is described below. |
|---|
| 844 | |
|---|
| 845 | Most of the intermediate files are staged in a sub-directory of a temporary |
|---|
| 846 | files directory and deleted at the end of the script. Specifying the B<-d> |
|---|
| 847 | flag on the command line avoids the deletion for debbugging. By default the |
|---|
| 848 | temporary files directory is directory is F</tmp> and can be reset in the |
|---|
| 849 | configuration file using the B<Tmpdir> directive. Intermediate files are |
|---|
| 850 | stored under a subdirectory formed by adding the process ID of the splitter |
|---|
| 851 | process. For example, if the temporary files directory is F</tmp> and the |
|---|
| 852 | B<splitter.pl> process ID is 2323, the temporary files will be stored in |
|---|
| 853 | F</tmp/split2323/>. |
|---|
| 854 | |
|---|
| 855 | The expreriment is split out into one experiment description per testbed in the |
|---|
| 856 | temporary directory named as F<experiment.testbed.tcl> where the experiment is |
|---|
| 857 | the experiment ID given in the configuration file, and the testbed is the |
|---|
| 858 | tb-set-node-testbed parameter for the nodes in the file. |
|---|
| 859 | |
|---|
| 860 | If the B<-n> option is absent the sub-experiments are then instantiated on |
|---|
| 861 | their testbeds. (Here B<-n> is analogous to its use in L<make(1)>). |
|---|
| 862 | Per-testbed parameters are set in the testbeds file. Sub-experiments on |
|---|
| 863 | slave testbeds are instantiated in a random order, but the master testbed is |
|---|
| 864 | currently instantiated last. |
|---|
| 865 | |
|---|
| 866 | Slave testbeds can be swapped in in parallel by specifying the B<-p> parameter |
|---|
| 867 | and the maximum number of simultaneous processes to start. |
|---|
| 868 | |
|---|
| 869 | Scripts to start federation (the federation kit) are copied into the local |
|---|
| 870 | experiment's tmp file - e.g., F</proj/DETER/exp/simple-split/tmp>. These are |
|---|
| 871 | taken from the directory given by the B<ScriptDir> directive in the |
|---|
| 872 | configuration file. |
|---|
| 873 | |
|---|
| 874 | If B<-t> is given the parameter is treated as a parameter to B<Timeout> in |
|---|
| 875 | F<splitter.conf>. |
|---|
| 876 | |
|---|
| 877 | If any sub-experiment fails to instantiate, the other sub-exeriments are |
|---|
| 878 | swapped out. B<-F> avoids this swap out, which can also be specified as |
|---|
| 879 | B<SoftFail: true> in F<splitter.conf> |
|---|
| 880 | |
|---|
| 881 | =head2 Configuration File |
|---|
| 882 | |
|---|
| 883 | The configuration file is a simple set of colon-separated parameters and |
|---|
| 884 | values. A configuration file must be present, either specified in the B<-c> |
|---|
| 885 | flag or the default F<./splitter.conf>. All the parameter names are case |
|---|
| 886 | insensitive, but should not include any whitespace. Parameter values may |
|---|
| 887 | include whitespace, but no newlines. |
|---|
| 888 | |
|---|
| 889 | Possible parameters are: |
|---|
| 890 | |
|---|
| 891 | =over 5 |
|---|
| 892 | |
|---|
| 893 | =item Experiment |
|---|
| 894 | |
|---|
| 895 | The name of the experiment on the various testbeds |
|---|
| 896 | |
|---|
| 897 | =item Master |
|---|
| 898 | |
|---|
| 899 | The master testbed label from the testbeds file, described below. |
|---|
| 900 | |
|---|
| 901 | =item Testbeds |
|---|
| 902 | |
|---|
| 903 | The testbeds file described below, giving per-testbed parameters. If this |
|---|
| 904 | directive is absent the testbeds file defaults to F<./testbeds> |
|---|
| 905 | |
|---|
| 906 | =item ScriptDir |
|---|
| 907 | |
|---|
| 908 | Location of the default federation scripts, i.e. the federation kit. |
|---|
| 909 | |
|---|
| 910 | =item GatewayPubkey |
|---|
| 911 | |
|---|
| 912 | =item GatewaySecretKey |
|---|
| 913 | |
|---|
| 914 | The names of the files containing secret and public keys to use in setting up |
|---|
| 915 | tunnels between testbeds. These will eventually be automatically generated. |
|---|
| 916 | |
|---|
| 917 | =item TmpDir |
|---|
| 918 | |
|---|
| 919 | =item TempDir |
|---|
| 920 | |
|---|
| 921 | The directory where temporary files are created. These are synonyms, but |
|---|
| 922 | should both be specified, B<TmpDir> has priority. If neither is specified, |
|---|
| 923 | F</tmp> is used. |
|---|
| 924 | |
|---|
| 925 | =item SMBShare |
|---|
| 926 | |
|---|
| 927 | The SMB share on the master testbed that will be exported to remote clients. |
|---|
| 928 | |
|---|
| 929 | =item SMBUser |
|---|
| 930 | |
|---|
| 931 | The experiment user to mount project directories as. This user needs to be a |
|---|
| 932 | member of the exported experiment - that is one of the users in the project |
|---|
| 933 | containing this experiment on the master testbed. |
|---|
| 934 | |
|---|
| 935 | =item Tclparse |
|---|
| 936 | |
|---|
| 937 | The pathname to the experiment parsing program. Only developers should set |
|---|
| 938 | this. |
|---|
| 939 | |
|---|
| 940 | =item Tclsh |
|---|
| 941 | |
|---|
| 942 | The pathname to the local oTcl shell. Only developers should set |
|---|
| 943 | this. |
|---|
| 944 | |
|---|
| 945 | =item Timeout |
|---|
| 946 | |
|---|
| 947 | Value in seconds after which a swap-in operatioin will be considered a success. |
|---|
| 948 | Often long swap-ins will hang when there are partial failures. This works |
|---|
| 949 | around this issue. (This behavior can be requested on the command line by |
|---|
| 950 | specifying B<-t> I<secs>.) |
|---|
| 951 | |
|---|
| 952 | =item FailSoft |
|---|
| 953 | |
|---|
| 954 | If not set, failure of any sub experiment swaps the rest out. Setting this to |
|---|
| 955 | any value avoids this swap out. (This behavior can be requested on the command |
|---|
| 956 | line by specifying B<-F>.) |
|---|
| 957 | |
|---|
| 958 | =back |
|---|
| 959 | |
|---|
| 960 | =head2 Testbeds file |
|---|
| 961 | |
|---|
| 962 | The configuration file (F<./testbeds> unless overridden by B<-c>) is a file of |
|---|
| 963 | scoped attribute-value pairs where each attribute is specified on a separate |
|---|
| 964 | line of the configuration file. Each testbed's parameters are preceeded by the |
|---|
| 965 | testbed label in brackets ([]) on a line by itself. After that the parameters |
|---|
| 966 | are specified as parameter: value. This is essentially the same format as the |
|---|
| 967 | configuration file. Parameters are: |
|---|
| 968 | |
|---|
| 969 | =over 4 |
|---|
| 970 | |
|---|
| 971 | =item User |
|---|
| 972 | |
|---|
| 973 | The user under which to make requests to this testbed. The user running |
|---|
| 974 | B<splitter.pl> must be able to authenicate as this user under L<ssh(1)> to this |
|---|
| 975 | testbed. |
|---|
| 976 | |
|---|
| 977 | =item OpsNode |
|---|
| 978 | |
|---|
| 979 | The host name of the testbed's ops node. The user calling B<splitter.pl> must |
|---|
| 980 | be able to execute commands on this host via L<ssh(1)>. |
|---|
| 981 | |
|---|
| 982 | =item Domain |
|---|
| 983 | |
|---|
| 984 | The domain of nodes in this testbed (including the ops host). This parameter |
|---|
| 985 | should always start with a period. |
|---|
| 986 | |
|---|
| 987 | =item Project |
|---|
| 988 | |
|---|
| 989 | The project under which to instantiate sub-experiments on this testbed. |
|---|
| 990 | |
|---|
| 991 | =item ConnectorType |
|---|
| 992 | |
|---|
| 993 | The node type for inter-testbed connector nodes on this testbed. |
|---|
| 994 | |
|---|
| 995 | =item SlaveNodeStartCmd |
|---|
| 996 | |
|---|
| 997 | The start command to run on experimental nodes when this testbed is used as a |
|---|
| 998 | slave. In all the start commands the following string substitutions are made: |
|---|
| 999 | |
|---|
| 1000 | =over 10 |
|---|
| 1001 | |
|---|
| 1002 | =item FEDDIR |
|---|
| 1003 | |
|---|
| 1004 | The local experiment's federation scripts directory. Each local experiment |
|---|
| 1005 | will have this replaced by the scripts directory on its local boss. |
|---|
| 1006 | |
|---|
| 1007 | =item GWCONF |
|---|
| 1008 | |
|---|
| 1009 | The full pathname of the gateway configuration file. As with FEDDIR, this is |
|---|
| 1010 | on the local boss. |
|---|
| 1011 | |
|---|
| 1012 | =item PROJDIR |
|---|
| 1013 | |
|---|
| 1014 | The project directory on the local boss. |
|---|
| 1015 | |
|---|
| 1016 | =item EID |
|---|
| 1017 | |
|---|
| 1018 | The local experiment name. |
|---|
| 1019 | |
|---|
| 1020 | =back |
|---|
| 1021 | |
|---|
| 1022 | All startcmds specified in F<testbeds> undergo these expansions. |
|---|
| 1023 | |
|---|
| 1024 | =item SlaveConnectorStartCmd |
|---|
| 1025 | |
|---|
| 1026 | The start command to run on gateway nodes when this testbed is used as a slave. |
|---|
| 1027 | The same string substitutions are made in this command as in SlaveNodeStartCmd. |
|---|
| 1028 | |
|---|
| 1029 | =item MasterNodeStartCmd |
|---|
| 1030 | |
|---|
| 1031 | The start command to run on experimental nodes when this testbed is used as a |
|---|
| 1032 | master. The same string substitutions are made in this command as in |
|---|
| 1033 | SlaveNodeStartCmd. |
|---|
| 1034 | |
|---|
| 1035 | =item MasterConnectorStartCmd |
|---|
| 1036 | |
|---|
| 1037 | The start command to run on gateway nodes when this testbed is used as a |
|---|
| 1038 | master. The same string substitutions are made in this command as in |
|---|
| 1039 | SlaveNodeStartCmd. |
|---|
| 1040 | |
|---|
| 1041 | =item ConnectorImage |
|---|
| 1042 | |
|---|
| 1043 | The disk image to be loaded on a gateway node on this testbed. |
|---|
| 1044 | |
|---|
| 1045 | =item FileServer |
|---|
| 1046 | |
|---|
| 1047 | The node in the master testbed from which filesystems are mounted. |
|---|
| 1048 | |
|---|
| 1049 | =item Boss |
|---|
| 1050 | |
|---|
| 1051 | The node in the master testbed that controls the testbed. |
|---|
| 1052 | |
|---|
| 1053 | =item TunnelCfg |
|---|
| 1054 | |
|---|
| 1055 | True if the connector needs to do DETER federation. This parameter will |
|---|
| 1056 | probably be removed. |
|---|
| 1057 | |
|---|
| 1058 | |
|---|
| 1059 | =back |
|---|
| 1060 | |
|---|
| 1061 | =head1 ENVIRONMENT |
|---|
| 1062 | |
|---|
| 1063 | B<splitter.pl> does not directly make use of environment variables, but calls |
|---|
| 1064 | out to L<ssh(1)> and (indirectly) to L<sh(1)>, which may be influenced by the |
|---|
| 1065 | environment. |
|---|
| 1066 | |
|---|
| 1067 | =head1 BUGS |
|---|
| 1068 | |
|---|
| 1069 | A deprecated B<-N> flag was used to select testbeds file format. Only one |
|---|
| 1070 | format is supported now, and B<-N> generates a warning, but otherwise does not |
|---|
| 1071 | affect B<splitter.pl>. |
|---|
| 1072 | |
|---|
| 1073 | =head1 SEE ALSO |
|---|
| 1074 | |
|---|
| 1075 | L<sh(1)>, L<ssh(1)> |
|---|
| 1076 | |
|---|
| 1077 | =cut |
|---|
