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https://issues.apache.org/jira/browse/SOLR-18320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18099276#comment-18099276
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Eric Pugh commented on SOLR-18320:
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found comments in CreateTool:
// TODO: This should be done using the configSet API. This would let us
remove
// the direct dependency on ZooKeeper APIs. Unlike the bin/solr zk
comamnds that
// work directly with ZooKeeper.
> bin/solr create should not use ZK if ZK host not provided
> ---------------------------------------------------------
>
> Key: SOLR-18320
> URL: https://issues.apache.org/jira/browse/SOLR-18320
> Project: Solr
> Issue Type: Improvement
> Components: cli
> Reporter: David Smiley
> Priority: Minor
> Labels: newdev
>
> I used "bin/solr create" to create a collection, using a HTTP Solr reference.
> To my surprise, the logging showed warnings related to
> ZkCredentialsInjector. This shows ZK classes are loaded, which ought not to
> be the case, as I didn't supply a ZK_HOST.
> {noformat}
> bin/solr create -c ffbbccdd --solr-connection 'http://localhost:8983'
> WARNING: Using _default configset. Data driven schema functionality is
> enabled by default, which is
> NOT RECOMMENDED for production use. To turn it off:
> curl http://localhost:8983/solr/ffbbccdd/config -d
> '{"set-user-property": {"update.autoCreateFields":"false"}}'
> Or:
> bin/solr config -c ffbbccdd -s http://localhost:8983 --action
> set-user-property --property update.autoCreateFields --value false
> WARN - 2026-07-25 17:49:06.477; org.apache.solr.common.cloud.SolrZkClient;
> Using default ZkCredentialsInjector. ZkCredentialsInjector is not secure, it
> creates an empty list of credentials which leads to 'OPEN_ACL_UNSAFE' ACLs to
> Zookeeper nodes
> WARN - 2026-07-25 17:49:06.479; org.apache.solr.common.cloud.SolrZkClient;
> Using default ZkACLProvider. DefaultZkACLProvider is not secure, it creates
> 'OPEN_ACL_UNSAFE' ACLs to Zookeeper nodes
> Created collection 'ffbbccdd' with 1 shard(s), 1 replica(s) with config-set
> 'ffbbccdd' {noformat}
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