Bug 1687879
Summary: | Cannot join a cluster any more when using IPv6 in gmcast.listen_addr | ||
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Product: | Red Hat Enterprise Linux 8 | Reporter: | Damien Ciabrini <dciabrin> |
Component: | galera | Assignee: | Michal Schorm <mschorm> |
Status: | CLOSED ERRATA | QA Contact: | Anna Khaitovich <akhaitov> |
Severity: | urgent | Docs Contact: | |
Priority: | unspecified | ||
Version: | 8.0 | CC: | akhaitov, chjones, databases-maint, hhorak, lhh, lmiksik, mbayer, michele |
Target Milestone: | rc | ||
Target Release: | 8.0 | ||
Hardware: | Unspecified | ||
OS: | Unspecified | ||
Whiteboard: | OtherQA | ||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: |
Cause:
source code bug; see comment 0.
Consequence:
One cannot force Galera to use a specific NIC anymore for
replication traffic with IPv6; see comment 0.
Fix:
Rebase
Result:
IPv6 works as expected.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2020-03-04 10:04:17 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Damien Ciabrini
2019-03-12 14:27:22 UTC
Additional info: Issue reported upstream in Codership's github and in MariaDB jira [1] [1] https://jira.mariadb.org/browse/MDEV-18890 As for the justification of the criticality: Currently in upstream RDO (OpenStack) we're using a version of Galera [1] that matches what will be provided by RHEL-8, and we had stop specifying the IPv6 address to bind to when using Galera. Which means that any host having access to the network could potentially connect to the Galera cluster (I spare you the firewall details), which is a regression compared to what we had in since RHOS-8 when we first enable IPv6 configuration of galera. Our hope is to revert to the original behaviour as soon as Galera is fixed upstream to avoid any regression when we ship downstream. [1] https://cbs.centos.org/koji/buildinfo?buildID=24424 Galera 25.3.26 includes a fix for the reported problem [1] I tested it locally and I confirm that it fixes our issue for joining a cluster with IPv6 only. I used the following galera configuration: [mysql] ... bind_address=ra2.v6.ratester wsrep_cluster_address="gcomm://ra1.v6.ratester,ra2.v6.ratester,ra3.v6.ratester" wsrep_provider_options = gmcast.listen_addr=tcp://[fd00:be38:af4c:a9a6:0:ee39:f850:c5f2]:4567; ... Having FQDN resolving to ipv6 address, and a ipv6 address inside bracket make the connection work for us. [1] https://github.com/codership/documentation/blob/master/release-notes/release-notes-galera-25.3.26.txt#L26 |