Dear Folks,
Thank you for the great software.
BACKGROUND:
We have just set up an authoritative pair of slaves at two different
locations. The two slaves at each location share an anycast address.
Both slaves read/write to a galera backend through a unix socket. We
are using PowerDNS 4.0.4 on RHEL 7.
These slaves use ordinary DNS replication from a master with a mysql
backend. The slaves are using Percona-XtraDB-Cluster 5.7.17. The
masters are using Percona-Server 5.7.18 with corosync and pacemaker,
DRBD.
PROBLEM:
We have PowerDNS failing quite often (about twice daily) with this message:
Aug 16 04:11:45 dnsslave2 pdns-instance[20433]: Exiting because communicator
thread died with error: GSQLBackend unable to refresh domain_id 18537: Could not
execute mysql statement: update domains set last_check=? where id=?: Deadlock f
ound when trying to get lock; try restarting transaction
Aug 16 04:11:46 dnsslave2 pdns-instance[20433]: Got a signal 6, attempting to
print trace:
[stack trace followed by restart by systemd]
I would be grateful for any suggestions on what we could do to remedy this.
--
Nick Urbanik http://nicku.org 808-71011 [email protected]
GPG: 7FFA CDC7 5A77 0558 DC7A 790A 16DF EC5B BB9D 2C24 ID: BB9D2C24
I disclaim, therefore I am.
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