Systems and Cloud Engineering, Architecture, DevOps, Infrastruture
This is an old cheat sheet I unearthed digging through an old USB drive I used to use for backups. It’s from ’07 — good to reminisce about the oldish days 😀 Okay…so it’s by no means a complete document, but it’s all I got for now. Moreover, if you are still using HPUX, …
HP UNIX Cheat sheet Read More »
Data Services in the Cluster HAStoragePlus helps configure a local filesystem into a highly available one. It provides following capabilities: additional filesystem checks mounts and unmounts enables Sun cluster to failover local file systems (to failover, local file system must reside on global dgs with affinity switchovers enabled) Data Service Agent — is a specially …
Sun Cluster Cheat Sheet — 4 Read More »
Sun Cluster Set up don’t mix PCI and SBus SCSI devices Quorum Device Rules A quorum device must be available to both nodes in a 2-node cluster QD info is maintained globally in the CCR db QD should contain user data Max and optimal number of votes contributed by QDs must be N -1 (where …
Sun Cluster Cheat Sheet — 2 Read More »
Cluster Configuration Repository (CCR) /etc/cluster/ccr (directory) Important Files /etc/cluster/ccr/infrastructure Global Services One node is to specific global services. All other nodes communicate with the global services (devices, filesystems) via the Cluster interconnect. Global Naming (DID Devices) – /dev/did/dsk and /dev/did/rdsk DID used only for naming globally — not access DID device names cannot/are not used …
Sun Cluster Cheat Sheet — 1 Read More »