https://wiki.itadmins.net/ 2026-05-23T11:03:17+00:00 https://wiki.itadmins.net/ https://wiki.itadmins.net/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2020-02-24T10:16:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.itadmins.net/doku.php?id=high_availability:corosync&rev=1582539361&do=diff Corosync Notes Reset resource fail-count crm_failcount -r $RESOURCE_ID$ -v 0 Resync resources crm resource cleanup text/html 2020-02-24T10:16:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.itadmins.net/doku.php?id=high_availability:hawk0.5.2&rev=1582539361&do=diff Hawk 0.5.2 Debian packages I just finished the initial packaging of ClusterLabs Hawk 0.5.2 Cluster web gui (<https://github.com/ClusterLabs/hawk>) and it is available from my repository: add the following to your /etc/apt/sources.list or /etc/apt/sources.list.d/itadmins deb http://packages.itadmins.net/debian squeeze main deb-src http://packages.itadmins.net/debian squeeze main text/html 2020-02-24T10:16:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.itadmins.net/doku.php?id=high_availability:lbactive&rev=1582539361&do=diff LBActive For the latest version go to the LBActive Project at Sourceforge LBActive is an dynamic and active load balancer health check system written in Python. Currently it supports only Nginx. The next release (if there is one) will move to a more modular approach to enable support for other load balancers that do not have dynamic and/or active checks and other types of backend checks if needed. text/html 2020-02-24T10:16:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.itadmins.net/doku.php?id=high_availability:nfs&rev=1582539361&do=diff Setting Up A High Availability NFS Server In this tutorial I will describe how to set up a highly available NFS server that can be used as storage solution for other high-availability services like, for example, a cluster of web servers that are being loadbalanced. If you have a web server cluster with two or more nodes that serve the same web site(s), than these nodes must access the same pool of data so that every node serves the same data, no matter if the loadbalancer directs the user to no… text/html 2020-02-24T10:16:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.itadmins.net/doku.php?id=high_availability:ocf_cronlink&rev=1582539361&do=diff OCF Cron Symlink Resource Agent Symlinks are easy in Corosync/HA. However, when coupled with Cron it gets to be a bit of a pain. A list of problems needing to be addressed: 1. Normal server startup has Cron starting before Corosync which means that if /var/spool/cron is missing then Cron will create it. This is not a bad thing, just not optimal for us if we are wanting to link to a NFS share with all the cron jobs that need to be made available on all the HA nodes. The OCF Symlink resource wil…