mirror of
https://github.com/munin-monitoring/contrib.git
synced 2018-11-08 00:59:34 +01:00
130 lines
2.8 KiB
Bash
130 lines
2.8 KiB
Bash
#!/bin/bash
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# -*- bash -*-
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: <<=cut
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=head1 NAME
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nginx error - Munin plugin to monitor nginx error rates (http status codes per minute).
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=head1 APPLICABLE SYSTEMS
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Any Linux host, running nginx, with bash version > 4.0
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=head1 CONFIGURATION
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This shows the default configuration of this plugin. You can override
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the log file path and the logpattern.
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[nginx_error]
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env.logpath /var/log/nginx
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env.logpattern a.*.log
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Nginx must also be configured to log accesses in "combined" log format (default)
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=head1 USAGE
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Link this plugin to /etc/munin/plugins/ and restart the munin-node.
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This plugin also can be used like wildcard-plugin for monitoring particular virtual host log.
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E.g.
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ln -s /usr/share/munin/plugins/nginx_error /etc/munin/plugins/nginx_error_mydomaincom
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will parse the log file /var/log/nginx/a.mydomaincom.log
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You can change 'env.logpattern' using asterisk ('*') to match your logs filenames.
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=head1 INTERPRETATION
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The plugin shows nginx http "error" status rates by parsing access log.
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=head1 MAGIC MARKERS
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#%# family=auto
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#%# capabilities=autoconf
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=head1 BUGS
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None known.
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=head1 VERSION
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$Id:$
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=head1 AUTHOR
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vovansystems@gmail.com, 2013
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=head1 LICENSE
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GPLv3
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=cut
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if [ -z $logpath ]; then
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logpath='/var/log/nginx'
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fi
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name=`basename $0`
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domain=${name/nginx_error/}
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if [[ $domain != '_' && ${#domain} -ne 0 ]]; then
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domain=${domain:1}
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if [ -z $logpattern ]; then
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logpattern='a.*.log'
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fi
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logpattern=${logpattern/\*/$domain}
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else
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logpattern='access.log'
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fi
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log="$logpath/$logpattern"
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# declaring an array with http status codes, we are interested in
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declare -A http_codes
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http_codes[400]='Bad Request'
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http_codes[401]='Unauthorized'
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http_codes[403]='Forbidden'
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http_codes[404]='Not Found'
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http_codes[405]='Method Not Allowed'
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http_codes[406]='Not Acceptable'
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http_codes[408]='Request Timeout'
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http_codes[429]='Too Many Requests'
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http_codes[499]='Client Connection Terminated'
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http_codes[500]='Internal Server Error'
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http_codes[502]='Bad Gateway'
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http_codes[503]='Service Unavailable'
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do_ () { # Fetch
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for k in ${!http_codes[@]}; do
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#value=`awk -v k=$k '{if ($9 == k) { print $9 }}' $log | wc -l` # this is very slow and ugly
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value=`awk -v k=$k '{if ($9 == k) { i += 1 }} END { print i }' $log` # this is much better
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echo "error$k.value ${value:-0}"
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done
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exit 0
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}
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do_config () {
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echo "graph_title $logpattern - Nginx errors per minute"
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echo 'graph_vlabel pages with http error codes / ${graph_period}'
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echo "graph_category nginx"
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echo "graph_period minute"
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echo "graph_info This graph shows nginx error amount per minute"
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for k in ${!http_codes[@]}; do
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echo "error$k.type DERIVE"
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echo "error$k.min 0"
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echo "error$k.label $k ${http_codes[$k]}"
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done
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exit 0
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}
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do_autoconf () {
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echo yes
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exit 0
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}
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case $1 in
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config|autoconf|'')
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eval do_$1
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esac
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exit $? |