Chris created ZOOKEEPER-4629:
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Summary: Observers fail to restart when using quorum sasl
Key: ZOOKEEPER-4629
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4629
Project: ZooKeeper
Issue Type: Bug
Affects Versions: 3.7.0
Reporter: Chris
Our observers have started failing to restart after introducing tls & sasl for
quorum and client connections. We have narrowed the cause down to quorum sasl
and disabling quorum sasl fixed the issue.
I can recreate the incident as follows:
# 6 server cluster of participants (this is our standard setup)
# Reconfig server id 1 to observer
## id1 switches to observer mode and stays functional
# restart id1
## id1 starts and never manages to join the cluster. Note that it does not
reach OBSERVING state.
## Subsequent restarts also fail
# stop id=1
# (repair) dynamic reconfig id 1 to participant
## (You can try to start id 1 immediately, but it will not retrieve the new
config and just get in the startup loop as before.)
## Give id 1 a zoo.cfg.dynamic.initial
## Start id 1 and it will connect, retrieve current config and function
normally
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