mirror of
https://github.com/munin-monitoring/contrib.git
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112 lines
2.6 KiB
Bash
Executable File
112 lines
2.6 KiB
Bash
Executable File
#!/bin/sh
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# -*- sh -*-
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: << =cut
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=head1 NAME
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ssl-certificate-expiry - Plugin to monitor CERTificate expiration on multiple services and ports
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=head1 CONFIGURATION
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[ssl-certificate-expiry]
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env.services www.service.tld blah.example.net_PORT
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To set warning and critical levels do like this:
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[ssl-certificate-expiry]
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env.services ...
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env.warning 30:
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Alternatively, if you want to monitor hosts separately, you can create multiple symlinks named as follows.
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ssl-certificate-expiry_HOST_PORT
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For example:
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ssl-certificate-expiry_www.example.net
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ssl-certificate-expiry_www.example.org_443
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ssl-certificate-expiry_192.0.2.42_636
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ssl-certificate-expiry_2001:0DB8::badc:0fee_485
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=head1 AUTHOR
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Pactrick Domack (ssl_)
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Olivier Mehani (ssl-certificate-expiry)
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Copyright (C) 2013 Patrick Domack <patrickdk@patrickdk.com>
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Copyright (C) 2017 Olivier Mehani <shtrom+munin@ssji.net>
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=head1 LICENSE
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=cut
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. "${MUNIN_LIBDIR}/plugins/plugin.sh"
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if [ "${MUNIN_DEBUG}" = 1 ]; then
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set -x
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fi
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HOSTPORT=${0##*ssl-certificate-expiry_}
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if [ "${HOSTPORT}" != "${0}" ] \
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&& [ ! -z "${HOSTPORT}" ]; then
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services="${HOSTPORT}"
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fi
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case $1 in
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config)
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echo "graph_title SSL Certificates Expiration"
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echo 'graph_args --base 1000'
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echo 'graph_vlabel days left'
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echo 'graph_category security'
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echo "graph_info This graph shows the days left for the certificate"
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for service in $services; do
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fieldname=$(clean_fieldname "$service")
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echo "${fieldname}.label $(echo "${service}" | sed 's/_/:/')"
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print_thresholds "${fieldname}"
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done
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exit 0
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;;
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esac
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get_expire()
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{
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SITE="$(echo "${1}" | sed 's/_.*//')"
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PORT="$(echo "${1}" | sed 's/.*_//')"
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VAR="$(clean_fieldname "$1")"
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if [ "$PORT" = "$SITE" ]; then
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PORT=443
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fi
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if echo "$SITE" | grep -q ':'; then
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# Wrap IPv6 addresses in square brackets
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SITE="[${SITE}]"
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fi
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CERT=$(echo "" | openssl s_client -CApath /etc/ssl/certs -servername "${SITE}" -connect "${SITE}:${PORT}" 2>/dev/null);
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if echo "${CERT}" | grep -q -- "-----BEGIN CERTIFICATE-----"; then
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echo "${CERT}" \
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| openssl x509 -noout -enddate \
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| awk -F= 'BEGIN {
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split("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec", month, " ");
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for (i=1; i<=12; i++)
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mdigit[month[i]] = i;
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}
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/notAfter/ {
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split($0,a,"="); split(a[2],b," "); split(b[3],time,":");
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datetime=b[4] " " mdigit[b[1]] " " b[2] " " time[1] " " time[2] " " time[3];
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days=(mktime(datetime)-systime())/86400;
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print "VAR.value " days;
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}' \
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| sed "s/VAR/${VAR}/g"
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fi
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}
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for service in $services; do
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get_expire "$service"
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done
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