/usr/bin/slonik_add_node is in slony1-2-bin 2.2.3-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | #!/usr/bin/perl
#
# Author: Gurjeet Singh
use Getopt::Long;
# Defaults
$CONFIG_FILE = '/etc/slony1/slon_tools.conf';
$SHOW_USAGE = 0;
# Read command-line options
GetOptions("config=s" => \$CONFIG_FILE,
"help" => \$SHOW_USAGE);
my $USAGE =
"Usage: add_node [--config file] node# event_node#
adds a node to the cluster.
event_node is the node number of the currnet origin node.
";
if ($SHOW_USAGE) {
print $USAGE;
exit 0;
}
require '/usr/share/slony1/slon-tools.pm';
require $CONFIG_FILE;
my ($addnode, $current_origin) = @ARGV;
if ($addnode =~ /^(?:node)?(\d+)$/) {
$addnode = $1;
} else {
die $USAGE;
}
if ($current_origin =~ /^(?:node)?(\d+)$/) {
$current_origin = $1;
} else {
die $USAGE;
}
my ($dbname, $dbhost) = ($DBNAME[$addnode], $HOST[$addnode]);
my $slonik = '';
$slonik .= "\n# ADD NODE\n";
$slonik .= genheader();
$slonik .= " try {\n";
$slonik .= " store node (id = $addnode, event node = $current_origin, comment = 'Node $addnode - $dbname\@$dbhost');\n";
$slonik .= " } on error {\n";
$slonik .= " echo 'Failed to add node $node to cluster';\n";
$slonik .= " exit 1;\n";
$slonik .= " }\n";
# STORE PATH
$slonik .= "\n# STORE PATHS\n";
foreach my $node (@NODES) {
my $adddsn = $DSN[$addnode];
if ($node != $addnode) { # skip the master node; it's already initialized!
my ($dbname, $dbhost, $nodedsn) = ($DBNAME[$node], $HOST[$node], $DSN[$node]);
$slonik .= " store path (server = $addnode, client = $node, conninfo = '$adddsn');\n";
$slonik .= " store path (server = $node, client = $addnode, conninfo = '$nodedsn');\n";
}
}
$slonik .= " echo 'added node $addnode to cluster';\n";
$slonik .= " echo 'Please start a slon replication daemon for node $addnode';\n";
run_slonik_script($slonik, 'ADD NODE');
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