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|
#!/usr/bin/perl
#
# Module: vyatta-keepalived.pl
#
# **** License ****
# Version: VPL 1.0
#
# The contents of this file are subject to the Vyatta Public License
# Version 1.0 ("License"); you may not use this file except in
# compliance with the License. You may obtain a copy of the License at
# http://www.vyatta.com/vpl
#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
# the License for the specific language governing rights and limitations
# under the License.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2007 Vyatta, Inc.
# All Rights Reserved.
#
# Author: Stig Thormodsrud
# Date: October 2007
# Description: Script to glue vyatta cli to keepalived daemon
#
# **** End License ****
#
use lib "/opt/vyatta/share/perl5/";
use VyattaConfig;
use VyattaKeepalived;
use Getopt::Long;
use strict;
use warnings;
sub keepalived_get_values {
my ($intf) = @_;
my $output;
my $config = new VyattaConfig;
$config->setLevel("interfaces ethernet $intf vrrp");
my $group = $config->returnValue("vrrp-group");
if (!defined $group) {
$group = 1;
}
my $vip = $config->returnValue("virtual-address");
if (!defined $vip) {
print "must define a virtual-address for vrrp-group $group\n";
exit 1;
}
my $priority = $config->returnValue("priority");
if (!defined $priority) {
$priority = 1;
}
my $preempt = $config->returnValue("preempt");
if (!defined $preempt) {
$preempt = "true";
}
my $advert_int = $config->returnValue("advertise-interval");
if (!defined $advert_int) {
$advert_int = 1;
}
$config->setLevel("interfaces ethernet $intf vrrp authentication");
my $auth_type = $config->returnValue("type");
my $auth_pass;
if (defined $auth_type) {
$auth_type = uc($auth_type);
$auth_pass = $config->returnValue("password");
if (! defined $auth_pass) {
print "vrrp authentication password not set";
exit 1;
}
}
my $state_transition_script = VyattaKeepalived::get_state_script();
$output = "vrrp_instance vyatta-$intf-$group \{\n";
if ($preempt eq "false") {
$output .= "\tstate BACKUP\n";
} else {
$output .= "\tstate MASTER\n";
}
$output .= "\tinterface $intf\n";
$output .= "\tvirtual_router_id $group\n";
$output .= "\tpriority $priority\n";
if ($preempt eq "false") {
$output .= "\tnopreempt\n";
}
$output .= "\tadvert_int $advert_int\n";
if (defined $auth_type) {
$output .= "\tauthentication {\n";
$output .= "\t\tauth_type $auth_type\n";
$output .= "\t\tauth_pass $auth_pass\n\t}\n";
}
$output .= "\tvirtual_ipaddress \{\n";
$output .= "\t\t$vip\n";
$output .= "\t\}\n";
$output .= "\tnotify_master ";
$output .= "\"$state_transition_script master $intf $group $vip\" \n";
$output .= "\tnotify_backup ";
$output .= "\"$state_transition_script backup $intf $group $vip\" \n";
$output .= "\t notify_fault ";
$output .= "\"$state_transition_script fault $intf $group $vip\" \n";
$output .= "\}\n";
return $output;
}
sub vrrp_update_config {
my $output;
my $config = new VyattaConfig;
# todo: support vifs
$config->setLevel("interfaces ethernet");
my @eths = $config->listNodes();
my $vrrp_instances = 0;
foreach my $eth (@eths) {
$config->setLevel("interfaces ethernet $eth");
if ($config->exists("vrrp")) {
$output .= keepalived_get_values($eth);
$vrrp_instances++;
}
}
if ($vrrp_instances > 0) {
my $conf_file = VyattaKeepalived::get_conf_file();
keepalived_write_file($conf_file, $output);
VyattaKeepalived::restart_daemon($conf_file);
}
return $vrrp_instances;
}
sub keepalived_write_file {
my ($file, $data) = @_;
open(my $fh, '>', $file) || die "Couldn't open $file - $!";
print $fh $data;
close $fh;
}
#
# main
#
my ($action, $vrrp_intf, $vrrp_group);
GetOptions("vrrp-action=s" => \$action,
"intf=s" => \$vrrp_intf,
"group=s" => \$vrrp_group);
if (! defined $action) {
print "no action\n";
exit 1;
}
if ($action eq "update") {
my $vrrp_instances = vrrp_update_config();
VyattaKeepalived::vrrp_log("vrrp update $vrrp_intf $vrrp_instances");
if ($vrrp_instances == 0) {
VyattaKeepalived::stop_daemon();
}
}
if ($action eq "delete") {
if (! defined $vrrp_intf || ! defined $vrrp_group) {
print "must include interface & group";
exit 1;
}
my $state_file = VyattaKeepalived::get_state_file($vrrp_intf, $vrrp_group);
system("rm $state_file");
VyattaKeepalived::vrrp_log("vrrp delete $vrrp_intf $vrrp_group");
exit 0;
}
exit 0;
# end of file
|
