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Excerpt

Impacts for 10.2

  • Upgrading Elasticsearch — You may continue to use Elasticsearch 2.3.3 with Storage 10.2 until you are able to move to 5.6 (see Migrating from Older Elasticsearch). Support for ES 2.3.3 will end in a future release. Before you upgrade to Gateway 6.0, however, you must complete the upgrade to Elasticsearch 5.6.
  • Configuration Settings — Be sure to run the Storage Settings Checker before any Swarm 10 upgrade to identify configuration issues. Note these changes:
    • ec.protectionLevel is now persisted. (SWAR-8231)
    • index.ovMinNodes=3 is the new default for the overlay index, in support of Swarm 10's new architecture. To keep your overlay index operational, set this new value in your cluster, through the UI or by SNMP (overlayMinNodes). (SWAR-8278)
    • metrics.enableNodeExporter can be set to True, which enables the Prometheus Node Exporter on that node. (SWAR-8408, SWAR-8578)
    • metrics.nodeExporterFrequency, a new dynamic setting, sets how frequently to refresh Swarm-specific Prometheus metrics in Elasticsearch; it defaults to 0, which disables this export. (SWAR-8408).

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  • Under some conditions, Swarm might start without mounting some of its volumes. If this happens, reboot the node. (10.2.1: SWAR-8597)
  • The OS in 10.2.1 cannot mount USB flash drives and so cannot read node.cfg files from them. If you boot Swarm from a USB drive, contact DataCore Support for a corrected version. (10.2.1: SWAR-8501)
  • During a rolling reboot of a small cluster, erroneous CRITICAL errors may appear on the console, claiming that EC objects have insufficient protection. These errors may be disregarded. (SWAR-8421)
  • When restarting a cluster of virtual machines that are UEFI-booted (versus legacy BIOS), the chassis shut down but do not come back up. (SWAR-8054)
  • If you wipe your Elasticsearch cluster, the Storage UI will show no NFS config. Contact DataCore Support for help repopulating your SwarmFS config information. (SWAR-8007)
  • If you delete a bucket, any incomplete multipart upload into that bucket will leave its 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)
  • Logs showed the error "FEEDS WARNING: calcFeedInfo(etag=xxx) couldn't find domain xxx, which is needed for a domains-specific replication feed". The root cause is fixed; if you received such warnings, contact DataCore Support so that your the issue can be resolved. (SWAR-7556)
  • With multipath-enabled hardware, the Swarm console Disk Volume Menu may erroneously show too many disks, having multiplied the actual disks in use by the number of possible paths to them. (SWAR-7248)

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Info
titleImportant

If you need to upgrade from Swarm 8.x or earlier, contact DataCore Support for guidance.