Hello, Team, As per <this>, zookeeper is not neces...
# supporta
Ayush Rathore
07/10/2024, 6:06 AMHello, Team, As per this, zookeeper is not necessary for single node clickhouse and I do not think there's an option to not use a zookeeper in the SigNoz/ClickHouse helm chart. Any help on how to disable it and whether we even should (to save on memory) ?
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Srikanth Chekuri
07/10/2024, 8:26 AMIt's a very lightweight container. You do not gain much by removing it.
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Ayush Rathore
07/10/2024, 8:29 AM@Srikanth Chekuri Agreed, but we have a use case where we have to reduce the entire stack within 2 GB of RAM, while we already managed to bring it down to 2.9 GB, releasing around 300 MBs used by zookeeper would help us a long way in that, Any way to do that?
Thanks for your reply 👍
Ayush Rathore
07/10/2024, 11:00 AMAfter removing ZooKeeper fom the ClickHouseInstallation CRD, Only the schema-migrator is failing, but the cluster other wise is running fine, Could @Srikanth Chekuri or anyone else give a hint about why the schema migrator needs zookeeper to run or refer me to a related doc, I am looking to make it work.
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Srikanth Chekuri
07/10/2024, 12:41 PMThere would errors in ClickHouse without zookeeper
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Ayush Rathore
07/10/2024, 1:50 PM@Srikanth Chekuri
Yes, but it is only failing when clickhouse is initialised in the absence of zookeeper, Once it starts, scaling zookeeper down does not make any difference, am adding a post install hook to scale zookeeper down after clickhouse is up. This approach would impair clickhouse in case of a automatic restart, but this seems to be the only way to go to save that 300MB. Any better ideas or suggestions are welcome.
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