Compatibility¶
The daemons now announce their « compat version » through the heartbeats.
If a daemon notices the cluster members have different compat versions, it disables ha orchestration.
This is what happens during a rolling agent upgrade.
In this case, the logs contain this warning
cluster members run incompatible versions. disable ha orchestration
A orchestrate=ha service instance print status shows:
ha1 warn incompatible versions
`- aubergine up idle, started
|- ip#0 ...... up 128.0.0.2@lo
|- ip#1 M....S stdby up 128.0.0.3@lo
...
And svcmon shows:
Nodes aubergine nuc
15m | 0.4 0.1
compat warn | 2 1
state |
...
When the compat is restored, the logs contain this info
cluster members run compatible versions. enable ha orchestration