PowerScale Administration for Clusters Configured for Eyeglass Assisted Access Zone Failover
SPN Management
With SPN Delegation configured as required in preparation for Eyeglass Assisted Access Zone Failover, Eyeglass will create SPNs related to SmartConnect Zones and Alias detected. No manual SPN management is required.
IMPORTANT:
Eyeglass does not create SPNs for any SmartConnect Zone or SmartConnect Zone Alias that are prefixed with igls. SPN check from Clusters configured with Eyeglass mapping hints will indicate that there are missing SPN’s for these SmartConnect Zones and Aliases . This is expected as these SmartConnect Zones and Aliases are not used for Cluster access. DO NOT EXECUTE SPN REPAiR as it will fail if executed on both clusters because of conflict created by having identical mapping hints on clusters.
IMPORTANT:
Eyeglass does not remove “extra” SPN’s that do not correspond to detected SmartConnect Zones and Aliases. This must be done manually if required for these SPN to be removed.
Post Failover Automation
Many failover scenarios depend on extra steps performed on devices, software, and infrastructure external to the NAS cluster. Using the Eyeglass script engine, these tasks can now be automated with output captured and appended to Eyeglass failover logs. For example:
- DNS updates post failover for SmartConnect zone CNAME editing.
- NFS host mount and remount automation.
- DNS server cache flushing.
- Application bring up and down logic to start applications post failover.
- Send alerts or emails.
- Run API commands on 3rd party equipment example load balancer, switch, router or firewall.
Please refer to the Eyeglass Admin Guide Script Engine Overview for more details.
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