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Posted to issues@solr.apache.org by "Jan Høydahl (Jira)" <ji...@apache.org> on 2022/10/25 09:08:00 UTC
[jira] [Comment Edited] (SOLR-16493) A way to boostrap clusterprops statically on node startup
[ https://issues.apache.org/jira/browse/SOLR-16493?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17623691#comment-17623691 ]
Jan Høydahl edited comment on SOLR-16493 at 10/25/22 9:07 AM:
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My first suggestion [from this PR comment|https://github.com/apache/solr/pull/1089#discussion_r1001629307] was that Solr upon startup looks for a local file in a predefined location such as {{$SOLR_HOME/bootstrap/clusterprops.json}} and if found, performs this logic:
# Validate the file, fail startup if malformed
# Check if {{/clusterprops.json}} exists in Zookeeper. If it does exist and is non-empty, do nothing
# If {{/clusterprops.json}} does not exist in ZK or exists but empty ({{{}{ }{}}})
, upload the boostrap file
When a large cluster with many nodes, locking needs to allow exactly one node to upload its bootstrap file.
NOTE: This simple mechanism should not be used for updating existing clusterprops, only for setting the initial state on first bootstrap.
was (Author: janhoy):
My first suggestion [from this PR comment|https://github.com/apache/solr/pull/1089#discussion_r1001629307] was that Solr upon startup looks for a local file in a predefined location such as {{$SOLR_HOME/bootstrap/clusterprops.json}} and if found, performs this logic:
# Validate the file, fail startup if malformed
# Check if {{/clusterprops.json}} exists in Zookeeper. If it does exist and is non-empty, do nothing
# If {{/clusterprops.json}} does not exist in ZK or exists but empty {{{}{}{}}}, upload the boostrap file
When a large cluster with many nodes, locking needs to allow exactly one node to upload its bootstrap file.
NOTE: This simple mechanism should not be used for updating existing clusterprops, only for setting the initial state on first bootstrap.
> A way to boostrap clusterprops statically on node startup
> ---------------------------------------------------------
>
> Key: SOLR-16493
> URL: https://issues.apache.org/jira/browse/SOLR-16493
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Jan Høydahl
> Priority: Major
>
> Today, boostrapping a cluster property needs minimum a running Zookeeper, or if you want to use Solr APIs, also a running Solr. This requires waiting for a healthy Solr instance, and posting a HTTP message with correct authz, checking for failures etc. This should be simpler, e.g. for use with Docker or for those who bundle Solr with another application.
> Common things you'd want to set is urlScheme and replica placement plugin.
> Use this Jira to discuss best way to solve this.
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