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If downgrading from Swarm 11.0, CRITICAL errors may appear on the feeds. To stop the errors, edit the existing feed definition names via the Swarm UI or legacy Admin Console. (SWAR-8543)
If the Elasticsearch cluster is wiped, the Storage UI shows no NFS config. Contact DataCore Support for help repopulating the SwarmFS config information. (SWAR-8007)
If a bucket is deleted, any incomplete multipart upload into that bucket leaves the parts (unnamed streams) in the domain. To find and delete them, use the s3cmd utility (search the Support site for "s3cmd" for guidance). (SWAR-7690)
Removing subcluster assignments in the CSN UI creates invalid config parameters preventing the unassigned nodes from booting. (SWAR-7675)
Logs showed the error "FEEDS WARNING: calcFeedInfo(etag=xxx) cannot find domain xxx, which is needed for a domains-specific replication feed". The root cause is fixed; if such warnings are received, contact DataCore Support so the issue can be resolved. (SWAR-7556)
If a feed is subject to a prolonged outage, a node reboot may be required for it to resume progress after the outage is cleared. If progress is not resolved after the reboot, contact DataCore Support. This has been resolved in 12.1.0 (SWAR-9062)
If Elasticsearch 6.8.6 blocks an index due to low disk space, this needs to be issued against each index (
index_*,csmeter*,metrics*) in theread_only_allow_deletestate. This is no longer an issue after upgrading to Swarm 12 / Elasticsearch 7 as it automatically unblocks when disk space frees up. (SWAR-8944)curl -i -XPUT "<ESSERVERIP>:9200/<INDEXNAME>/_settings" -d '{"index.blocks.read_only_allow_delete" : null}' -H "Content-Type: application/json"
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Note these installation issues whenever when upgrading Swarm:
The elasticsearch-curator package may show an error during an upgrade, which is a known curator issue. Workaround: Reinstall the curator:
yum reinstall elasticsearch-curator(SWAR-7439)Do not install the Swarm Search RPM before installing Java. If Gateway startup fails with "Caringo script plugin is missing from indexer nodes", uninstall and reinstall the Swarm Search RPM. (SWAR-7688)
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