So, finally got around to finishing the configuration sync script for Vyatta.
Taking the script I found here as a starting point, I updated it to work with VC6, and changed the configuration method to support firewall zones, and zone-policies rather than interface based rulebases (new in VC6) and also support syncing of static routes.
In addition, this script uses the vyatta-cfg-cmd-wrapper to build the second script, which is then copied over and remotely executed on the backup node, rather than using ssh -tt – I found that when used in combination with a big ruleset, and a busy network – this method would often result in partially complete or otherwise generally rubbish config on the backup node.
I was going to paste it here, but doesn’t look like code tags in wordpress seem to actually enclose the code as they should do – current version@github
Disclaimer: This script works on my own Vyatta cluster, but it may not work on yours – no responsibility taken for destroyed configs/servers/lives etc. Manual Configuration is still required on both nodes for the base system, interfaces, VRRP etc, and matching interface names is a requirement for this to work.