High-Availability NFS Cluster with DRBD and Pacemaker-Compatible Heartbeat
To isolate heartbeat traffic and avoid interference from production interfaces, static host routes are added for the dedicated interconnect (eth2). These persist across reboots:
# On primary node (hostname: master)
ip route add 10.20.23.111/32 dev eth2
echo "ip route add 10.20.23.111/32 dev eth2" >> /etc/rc.d/rc.local
# On seco ...
Posted on Sun, 30 Aug 2026 16:23:45 +0000 by amos_
Heartbeat-driven Apache HA Setup and Production Maintenance Guide
Practical Example: Highly Available Apache Web Service with Heartbeat
1. Lab Environment
Two RHEL/CentOS hosts:
node-a – 192.168.1.130
node-b – 192.168.1.129
A floating virtual IP (VIP) 192.168.1.131/24 will be managed by Heartbeat and bound to whichever node is active.
2. Install Apache on Both Nodes
sudo yum install -y httpd
3. Prepare the ...
Posted on Sun, 17 May 2026 16:29:21 +0000 by saqibb