General info gathering
# is_cluster
lssrc -g cluster 2>/dev/null 1>&2 && /usr/es/sbin/cluster/utilities/cltopinfo -c | awk "/Name:/ {print \$3}"
# cluster and node names, colon separated
/usr/es/sbin/cluster/utilities/cllsclstr -nc
---
New in PowerHA 7.1
- RSCT + CAA
- CAA = heartbeat, central config, events, global device names, EC VGs
- CAA disk fencing (access restriction) support for MPIO only
- repository disk - resiliency from 7.1.1
- IPv4 only
- smitty sysmirror
- old 'cltopinfo'
- max 16 nodes
- max 64 resource groups
- changing hostname requires reconfiguration
- public vs private networks
- boot, service, persistent IP address
- setting time = wait time for higher priority nodes
- fallover (node failure) vs fallback (node recovery)
- fallback timer
- RG dependencies: parent/child, location, after/before another
- "application server" --> "application controller"
- "application controller script" (start/stop)
- cluster events (/usr/es/sbin/cluster/events)