Announcing varnish_gather

Posted on 2010-07-09

Varnish_gather is a small script I've written (just now) to gather various information regarding varnish to make it easier to send possibly relevant information to the people who can help you with varnish.

The official location is: http://bohemians.org/~kristian/varnish/varnish_gather (http://bohemians.org/~kristian/varnish/varnish_gather) . The usage is simple: Download it, make it executable, then run it. It does not require root privileges, and supplying the admin port is optional.

./varnish_gather > varnish_info.log

./varnish_gather localhost:6082 > varnish_info2.log

Only intended for Debian/Ubuntu and Red Hat variants of GNU/Linux for now. Patches are welcome.

That's it.

For reference, heres a copy of the version available when I post this:

#!/bin/sh
# varnish_gather - Gather debug information for varnish issues
# Copyright (C) 2010 Kristian Lyngstol
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
#
#
# Mostly harmless.

if [ -z "$1" ]; then
echo 1>&2 "WARNING: Without a hostname:port for the admin interface, this script is less useful"
echo 1>&2 "Typical usage: ./varnish_gather localhost:6082"
sleep 5;
fi

ITEM=0

banner()
{
echo "--------------------------------"
echo "Item $ITEM: $*"
echo
ITEM=$(( $ITEM + 1 ))
}

mycat()
{
if [ -r $1 ]; then
banner "File: $1"
cat $1
fi
}

banner dmesg
dmesg

banner logs
mycat /var/log/dmesg

for a in /var/log/messages /var/log/syslog; do
if [ -r $a ]; then
banner "Filtered log: $a"
grep varnish $a
fi
done

mycat /proc/cpuinfo
mycat /proc/version

banner Memory usage
free -m

banner Vmstat 5x5
vmstat 5 5

banner Process scan
ps aux | egrep '(varnish|apache|mysql|nginx)'

banner varnishstat
varnishstat -1

if [ ! -z "$2" ]; then
banner "varnishstat for $2"
varnishstat -1 -n $2;
fi

banner mount
mount

banner netstat
netstat -nlpt

banner netstat2
netstat -np

mycat /etc/default/varnish
mycat /etc/sysconfig/varnish

banner "Local files"
find /usr/local -name varnish

if [ ! -z $1 ]; then
banner "Varnishadm tinkering"
varnishadm -T $1 vcl.list
varnishadm -T $1 vcl.show boot
varnishadm -T $1 param.show
varnishadm -T $1 purge.list
else
banner "NO ADMINPORT SUPPLIED"
fi

banner "End"