Error: "An update is staged on the primary but cannot be installed until it has been distributed to each replica in the cluster"
说明
Error when attempting to install an update "An update is staged on the primary but cannot be installed until it has been distributed to each replica in the cluster"
原因
This means the patch has timedout while attempting to upload to the replicas. In versions 2.5 and below there is a 90 minute timeout in patch distribution. If a replica takes longer than 90 minutes, the patch will timeout. From 2.6 this is increased to 24 hours.
解决办法
Unojin the replica that failed from the cluster. Upgrade both the cluster and unjoined replica to at least 2.7, then rejoin. From 2.7 the timeout has been increased.