Description

high-availability clustering using Heartbeat - httpd service as an example

VM description:

OS: Scientific linux 6
master node: hydra01.farm
other node: hydra02.farm

Howto

create SL6 box using veewee-boxarium
copy ssh_keys from ssh-gerwazy

    vagrant up
    ssh root@77.77.77.121 #hydra01
    ssh root@77.77.77.122 #hydra02
    vagrant destroy

Tests:

cl_status rscstatus -m #on hydra01 and hydra02
web browser: 77.77.77.120:80
/etc/init.d/httpd status #on hydra01 and hydra02
/etc/init.d/heartbeat stop #on hydra01
cl_status rscstatus -m #on hydra01 and hydra02
web browser: 77.77.77.120:80
/etc/init.d/httpd status #on hydra01 and hydra02
look here: /var/log/ha-log

Bibliography

HA centos example with httpd service: http://www.howtoforge.com/high_availability_heartbeat_centos
heartbeat clastering: http://www.linuxnix.com/2010/01/heartbeat-clustering.html
haresources: http://www.linux-ha.org/wiki/Haresources
heartbeat and pacemaker: http://library.linode.com/linux-ha/ip-failover-heartbeat-pacemaker-ubuntu-10.04#sph_configure-cluster-resources

Copyright and license

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in compliance with the License. You may obtain a copy of the License in the LICENSE file, or at:

http://www.apache.org/licenses/LICENSE-2.0