Mariadb – WSREP: failed to report last committed and stop

clusteringgaleramariadb

I have galera cluster and I have 4 nodes. I'm importing some data. however one node gives error. Warning. The warning is;

warning WSREP: Failed to report last committed 59102, -q (interrupted system call) 
mysqld_safe Number of processes running now: 0
mysqld_safe WSREP: not restarting wsrep node automatically
mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended

What is that error? How can I solve this? This node shouldn't stop, not mysql service stopped in that error. Thanks

Best Answer

warning WSREP: Failed to report last committed

This is just a warning, and in itself isn't a cause for concern. I think it's unlikely that this caused the node to stop. See also Percona's blog post about it.

And then:

mysqld_safe Number of processes running now: 0

Again, according to Percona (Support):

Your mysqld process was killed, most likely by OOMkiller. Check the system log. Joining node will refuse to accept connections until it synchronizes with cluster.

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Mysql – Setting up MySQL Cluster on Two Systems

Your management configuration seems fine to me. It sounds like ndb_mgmd didn't quite die or there is a problem with the contents in the /var/lib/mysql-cluster directory on the management server.

You might also want to make sure that ndb_mgmd isn't starting automatically, like through some startup script in /etc/init.d/.

To try and resolve the issue, I'd start with these steps first.

Since you are just getting started and don't have any real data yet.

Kill any left over ndb_mgmd processes with: killall ndb_mgmd or by rebooting if killall doesn't help.
Completely delete everything within /var/lib/mysql-cluster: rm -Rf /var/lib/mysql-cluster/*
Start the cluster process again: ndb_mgmd -f /etc/config.ini --initial
Verify that ndb_mgmd is listening with netstat

$> netstat -tlpn

Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:1186 0.0.0.0:* LISTEN 3251/ndb_mgmd

Connect to management node

$> ndb_mgm
ndb_mgm> show
Connected to Management Server at: localhost:1186
Cluster Configuration


[ndb_mgmd(MGM)] 1 node(s)
id=1    @192.168.9.26  (mysql-5.1.61 ndb-7.1.22)

Update

Here is a Quick Start guide from Oracle with all nodes, management, mysql and data running on one server.

http://downloads.mysql.com/tutorials/cluster/GetMySQLClusterRunning-LINUX.pdf

MariaDB – ERROR WSREP: Failed to Open Channel ‘test_cluster’

We should start the first node without below parameter in my.cnf : wsrep_cluster_address="gcomm://192.168.120.107,192.168.120.111,192.168.120.117"

Then start the other nodes normally :

/etc/init.d/mysql start

The first node should start normally like the others.

Best Answer

Related Solutions

Mysql – Setting up MySQL Cluster on Two Systems

MariaDB – ERROR WSREP: Failed to Open Channel ‘test_cluster’

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