Nagios Support Forum

check_http v1.4.15-46-gefa2 (nagios-plugins 1.4.15)

Is your load balancing implementation using virtual ports?

I believe so as they are virtual machines

Alright lets restructure your check:

This was the response when the above command was ran:

[root@nagios-test libexec]# ./check_http -H XX.XX.X.XX -v -C 14
CRITICAL - Cannot make SSL connection
CRITICAL - Cannot retrieve server certificate.

IP has been sanitized for privacy reasons, and when the FQDN is used instead of IP the result is the same, I cannot check via URL as the Web server is application layer load-balanced with two or three other servers.

You did not add the "-S" in as shown above. We want to verify if the ssl switch will make a difference in this case since "-C" should be setting the port as 443 already.

I added the -S (sorry missed that before) but to no avail the issue remains. The output remains the same as before:

[root@nagios-test libexec]# ./check_http -H 10.50.1.26 -S -v -C 14
CRITICAL - Cannot make SSL connection
CRITICAL - Cannot retrieve server certificate.

I assume this website serves ssl on port 443?

Yes it does also port 83

Can you run: