Public bug reported:
Starting this bug as a point of discussion.
Per [0] when pc.recovery = true (default) the cluster should be able to
automatically recover itself after a power outage. It is possible there
is a discrepancy between expectation and reality. This bug is to
determine what we can expect from automatic recovery.
In re-creating a power outage scenario, percona fails to restore primary
component from disk:
[Warning] WSREP: Fail to access the file
(/var/lib/percona-xtradb-cluster//gvwstate.dat) error (No such file or
directory). It is possible if node is booting for first time or re-booting
after a graceful shutdown
[Note] WSREP: Restoring primary-component from disk failed. Either node is
booting for first time or re-booting after a graceful shutdown
Furthermore, the cluster appears to timeout in attempting to talk to
each of its nodes:
[ERROR] WSREP: failed to open gcomm backend connection: 110: failed to reach
primary view (pc.wait_prim_timeout): 110 (Connection timed out)
at gcomm/src/pc.cpp:connect():159
[ERROR] WSREP: gcs/src/gcs_core.cpp:gcs_core_open():208: Failed to open backend
connection: -110 (Connection timed out)
ERROR] WSREP: gcs/src/gcs.cpp:gcs_open():1514: Failed to open channel
'juju_cluster' at 'gcomm://10.5.0.49,10.5.0.9': -110 (Connection timed out)
[ERROR] WSREP: gcs connect failed: Connection timed out
[ERROR] WSREP: Provider/Node (gcomm://10.5.0.49,10.5.0.9) failed to establish
connection with cluster (reason: 7)
[ERROR] Aborting
For Ubuntu devs:
dpkg -l |grep percona
ii percona-xtrabackup 2.4.9-0ubuntu2
amd64 Open source backup tool for InnoDB and XtraDB
ii percona-xtradb-cluster-server 5.7.20-29.24-0ubuntu2.1
all Percona XtraDB Cluster database server
ii percona-xtradb-cluster-server-5.7 5.7.20-29.24-0ubuntu2.1
amd64 Percona XtraDB Cluster database server binaries
root@juju-fa2938-zaza-eeda2892d6b4-1:/var/lib/percona-xtradb-cluster#
lsb_release -rd
Description: Ubuntu 18.04.2 LTS
Release: 18.04
apt-cache policy percona-xtradb-cluster-server
percona-xtradb-cluster-server:
Installed: 5.7.20-29.24-0ubuntu2.1
Candidate: 5.7.20-29.24-0ubuntu2.1
Version table:
*** 5.7.20-29.24-0ubuntu2.1 500
500 http://nova.clouds.archive.ubuntu.com/ubuntu
bionic-updates/universe amd64 Packages
100 /var/lib/dpkg/status
5.7.20-29.24-0ubuntu2 500
500 http://nova.clouds.archive.ubuntu.com/ubuntu bionic/universe amd64
Packages
Find attached logs from a 3 node cluster including etc config,
grastate.dat and logs for each node.
[0] https://www.percona.com/blog/2014/09/01/galera-replication-how-to-
recover-a-pxc-cluster/
** Affects: percona-xtradb-cluster-5.7 (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "Node logs and files"
https://bugs.launchpad.net/bugs/1830950/+attachment/5267447/+files/pc-recovery.tar.gz
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https://bugs.launchpad.net/bugs/1830950
Title:
Percona cluster with pc.recovery=true failes to automatically recover
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