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CheckSSLCertExpiry

Current Version
V1
Last Release Date
2015-09-01
Compatible With
  • Nagios 1.x
  • Nagios 2.x
  • Nagios 3.x
  • Nagios 4.x
  • Nagios XI
License
GPL
Hits
2721
Files:
FileDescription
CheckSSL.shCheckSSL.sh
Network Monitoring Software - Download Nagios XI
Log Management Software - Nagios Log Server - Download
Netflow Analysis Software - Nagios Network Analyzer - Download
A simple bash script to check if the ssl certificate is getting expire. If getting expired in 10 days then it will alert.

Syntax:

script :

Feel free to change, as per need, example for -c and -w.

For now I just made it simple.
A simple bash script to check if the ssl certificate is getting expire. If getting expired in 10 days then it will alert.

Syntax:

script :

Feel free to change, as per need, example for -c and -w.

For now I just made it simple.


example:

./CheckSSL.sh www.google.com:443

output:
Certificate will expire on Jun 7 00:00:00 2016 GMT
Reviews (1)
This was a good starter script. It works as it should after modification. I ended up modifying it to say...
#######################################
#!/bin/bash
SitePort=$1

OutDate=$(echo | openssl s_client -connect ${SitePort}:443 2>/dev/null | openssl x509 -noout -endda$

OutputDate=$(date -d "${OutDate}" "+%s")
SystemDate=$(date '+%s')

DiffTime=$(expr "${OutputDate}" - "${SystemDate}")

if [ "${DiffTime}" -ge 864000 ]
then
echo "Certificate will expire on ${OutDate}"
exit 0

elif [ "${DiffTime}" -le 863999 -a -ge 5 ]
then
echo "Certificate is going to expire in less then 10 days on ( ${OutDate} ). Please Renew!"
exit 1
elif [ "${DiffTime}" -le 4 ]
then
echo "Certificate has EXPIRED on ( ${OutDate} )! Please replace!"
exit 2
else
echo "ERROR! Certificate NOT found!"
exit 2
fi
#######################################