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certificate_file_expiry: add pattern support for CERT env variable

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Andreas Perhab 2020-12-22 13:34:16 +01:00 • committed by Lars Kruse
parent 5c983dbc7d
commit 9c995590b2
1 changed files with 30 additions and 20 deletions
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50
plugins/ssl/certificate_file_expiry
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@ -18,7 +18,7 @@ For letsencrypt certificates
[certificate_file_expiry]
user root
env.CERTS x509:/etc/letsencrypt/live/domain1.example.com/cert.pem x509:/etc/letsencrypt/live/domain2.example.com/cert.pem
env.CERTS x509:/etc/letsencrypt/live/*/cert.pem
Warning and Critical levels can also be configured with env variables like this:
@ -29,6 +29,14 @@ Warning and Critical levels can also be configured with env variables like this:
# critical when certificate will be invalid within 1 day
env.critical 1:
env.CERTS should be a space separated list of patterns prefixed by the type of certificate to check and a colon. All types of
certificates that openssl supports as standard commands and have a validity output are supported (e.g. x509, crl).
File patterns can be a single file (e.g. /etc/openvpn/easy-rsa/keys/crl.pem) or a pattern that matches multiple files
(e.g. /etc/letsencrypt/live/*/cert.pem).
env.warning and env.critical are configurable values for the warning and critical levels according to
http://munin-monitoring.org/wiki/fieldname.warning and http://munin-monitoring.org/wiki/fieldname.critical
=head1 Dependencies
Dependencies: openssl
@ -46,29 +54,31 @@ GPLv2
. "$MUNIN_LIBDIR/plugins/plugin.sh"
if [ "$1" = "config" ] ; then
echo "graph_title Certificate validity"
echo "graph_args --logarithmic --base 1000"
echo "graph_vlabel certificate validity in days"
echo "graph_category security"
echo "graph_title Certificate validity"
echo "graph_args --logarithmic --base 1000"
echo "graph_vlabel certificate validity in days"
echo "graph_category security"
fi
now=$(date +%s)
warning=${warning:-5:}
critical=${critical:-1:}
for cert in ${CERTS}; do
cert_type=${cert%:*}
cert_file=${cert#*:}
cert_name=$(clean_fieldname "$cert_file")
if [ "$1" = "config" ] ; then
echo "${cert_name}.label ${cert_file}"
print_warning "$cert_name"
print_critical "$cert_name"
elif [ "$1" = "" ] ; then
validity=$(/usr/bin/openssl "$cert_type" -text -noout -in "$cert_file" | grep -E '(Next Update|Not After)')
validity=${validity#*:}
validity=$(date --date="$validity" +%s)
validity=$((validity - now))
validity=$(echo "$validity" | awk '{ print ($1 / 86400) }')
echo "${cert_name}.value $validity"
fi
cert_type=${cert%:*}
cert_pattern=${cert#*:}
for cert_file in $cert_pattern; do
cert_name=$(clean_fieldname "$cert_file")
if [ "$1" = "config" ] ; then
echo "${cert_name}.label ${cert_file}"
print_warning "$cert_name"
print_critical "$cert_name"
elif [ "$1" = "" ] ; then
validity=$(/usr/bin/openssl "$cert_type" -text -noout -in "$cert_file" | grep -E '(Next Update|Not After)')
validity=${validity#*:}
validity=$(date --date="$validity" +%s)
validity=$((validity - now))
validity=$(echo "$validity" | awk '{ print ($1 / 86400) }')
echo "${cert_name}.value $validity"
fi
done
done