Hello. I have a problem with helm chart upgrade of our test application. I am trying to upgrade the application to chart version 0.41.0 and I'm following the instructions on the self-hosted documentation. The schema-migrator job started correctly but then hit a crashbackoffloop. Checking the logs, there was this error:

{
  "level": "fatal",
  "timestamp": "2024-05-29T09:50:01.819Z",
  "caller": "signozschemamigrator/migrate.go:128",
  "msg": "Failed to run migrations",
  "component": "migrate cli",
  "error": "failed to create database, err: code: 999, message: All connection tries failed while connecting to ZooKeeper. nodes: [::1]:2181\nPoco::Exception. Code: 1000, e.code() = 111, Connection refused (version 24.4.1.2088 (official build)), [::1]:2181\nPoco::Exception. Code: 1000, e.code() = 111, Connection refused (version 24.4.1.2088 (official build)), [::1]:2181\nPoco::Exception. Code: 1000, e.code() = 111, Connection refused (version 24.4.1.2088 (official build)), [::1]:2181",
  "stacktrace": "main.main\n\t/home/runner/work/signoz-otel-collector/signoz-otel-collector/cmd/signozschemamigrator/migrate.go:128\nruntime.main\n\t/opt/hostedtoolcache/go/1.21.9/x64/src/runtime/proc.go:267"
}

The error message is a bit perplexing, given that the clickhouse server is operating on its lonesome, and is external. Signoz should not even be aware of any zookeeper nodes, much less, there shouldn't even be a need for one. I tried connecting directly and creating a database with a manual query and I faced no issues. Is there any leads on what I should look into to troubleshoot?

At present, ClickHouse with Zookeeper is a requirement for running SigNoz cluster.

Ah, I understand. Thank you.