HTTPS CRITICAL - Socket timeout after 30 seconds (again)

[fjacuqet (Frederic Jacquet)]

Hello everybody

I have a weird behavior on my checkmk check check_http.

When I run as “site” using ssh on the server I get a proper answer

OMD[site]:/omd$ ./versions/2.0.0p8.cre/lib/nagios/plugins/check_http '-u' '/GecaRequest/' '--ssl' '-w' '0.200000' '-c' '0.500000' '-t' 10 '-s' 'string' '--extended-perfdata' '-j' 'GET' '--sni' '-p' '443' -H FQDN
HTTP OK: HTTP/1.1 200 200 - 14165 bytes in 0.134 second response time |time=0.133651s;0.200000;0.500000;0.000000;10.000000 size=14165B;;;0 time_connect=0.023515s;;;;10.000000 time_ssl=0.030810s;;;;10.000000 time_headers=0.000031s;;;;10.000000 time_firstbyte=0.076102s;;;;10.000000 time_transfer=0.079189s;;;;10.000000

If I set the check_http even in 2.0p8 I have “CRITICAL - Socket timeout after 30 seconds” for

check_mk_active-http!'-u' '/GecaRequest/' '--ssl' '-w' '0.200000' '-c' '0.500000' '-t' 30 '--extended-perfdata' '-j' 'GET' '--sni' '-p' '443' '$_HOSTADDRESS_4$'

So I don’t get it. I have reboot to clear cache and other but still the same.

Am I the only one ?
Fred

[lkoenig (Lorenz Koenig)]

@fjacuqet Does the “FQDN” you specify in the check_http call resolve as the same IPv4-address that is configured for the host you are running the active check for? The way i see it, you are running the check_http against a FQDN and the active check receives a IPv4-address as a host-parameter.

[fjacuqet (Frederic Jacquet)]

true.
From cli checking with IP does not work!
Now I must understand how to force checkmk to use FQDN and not IP …

[lkoenig (Lorenz Koenig)]

Inside the configuration for the Active Check you are able to configure what check_http should use to contact the host:

You can also set virtual hosts there, if you have multiple domains configured on the target server.

[fjacuqet (Frederic Jacquet)]

Finally found it, using CLI is not 100% like active mode. I finally fixed it by declaring the hostname as a virtual host. This way active mode is happy, and I can do my monitoring.
checkmk always return to IP even if I never use them so we must declare virtual hosts as they are