Issue #5067 has been updated by Markus Roberts.

Status changed from Unreviewed to Duplicate

Upgrading to activerecord 2.3 has been reported to fix this.

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Bug #5067: Mysql::Error: MySQL server has gone away
https://projects.puppetlabs.com/issues/5067

Author: MaxiM Basunov
Status: Duplicate
Priority: Normal
Assignee: 
Category: 
Target version: 
Affected Puppet version: 2.6.1
Keywords: 
Branch: 


We have two puppet-master installations where stored configs configured using 
MySQL.

Very often, puppet master reports:
<blockquote>
Thu Oct 21 18:48:19 +0400 2010 //host.domain.com/Puppet (err): Could not 
retrieve catalog from remote server: Error 400 on SERVER: Mysql::Error: MySQL 
server has gone away: SELECT * FROM `hosts` WHERE (`hosts`.`name` = 
'host.domain.com')  LIMIT 1
Thu Oct 21 18:48:19 +0400 2010 //host.domain.com/Puppet (notice): Using cached 
catalog
Thu Oct 21 18:48:19 +0400 2010 //host.domain.com/Puppet (err): Could not 
retrieve catalog; skipping run
</blockquote> 
SQL may differ.

Every master controls 5-10 agents (each agent runs every 5 minutes), but we 
plan to control total 200+ hosts, and this behavior will be very annoying under 
high load.

Message reported for different agent hosts, time between reports differs from 5 
to 120 minutes.

Software used on affected servers:
Linux system is CentOS 5/32 (XEN VM), puppet 2.6.1, Nginx, Mongrel, MySQL 
5.0.77, Rails and ActiveRecord 2.2.2, Ruby 1.8.6-111
FreeBSD system is 7.3/amd64, puppet 2.6.2, Nginx, Mongrel, MySQL 5.1.48, Rails 
and ActiveRecord 2.2.2, Ruby 1.8.7-248

All mysql servers with default configuration (on FreeBSD - buffers configured) 
with InnoDB enabled, and Puppet tables in InnoDB.

Puppet config from Linux (on BSD slighty differs):
<blockquote>
[main]
    vardir = /var/lib/puppet
    logdir = /var/log/puppet
    rundir = /var/run/puppet
    ssldir = $vardir/ssl
    report = true

[master]
    bindaddress = 0.0.0.0
    reports = log,tagmail,store
    syslogfacility = user
    modulepath = 
/etc/puppet/modules/main:/etc/puppet/modules/custom:/usr/share/puppet/modules
    storeconfigs = true
    dbadapter = mysql
    dbuser = puppet
    dbpassword = password
    dbserver = localhost
    dbsocket = /var/lib/mysql/mysql.sock
</blockquote>



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