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This plugin tests the HTTP service on the specified host. It can test normal (HTTP) and secure (HTTPS) servers, follow redirects, search for strings and regular expressions, check connection times, and report on certificate expiration times.

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Table of Contents

Debugging

Info
titleProxy

In the following examples, you will see references to myproxyip and proxy_port. Please replace this information with your own proxy IP and port numbers.

Debugging with curl

If you have trouble using check_http, you can start to query the URL with curl:

Code Block
languagebash
themeRDark
curl -x 173.212.220.96:3128myproxyip:proxy_port https://www.google.decom/ --verbose

Execute the active Check manually

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Code Block
languagebash
themeRDark
OMD[mysite]:~/lib/nagios/plugins$ cmk -N |grep http
  check_command                 check_mk_active-http!'-u' 'https://www.google.decom/' '--ssl' '--onredirect=follow' '-j' 'CONNECT' '--sni' '-p' '3128proxy_port' '173.212.220.96myproxyip' 'www.google.decom'
  command_line                  /omd/sites/cme2/lib/nagios/plugins/check_http $ARG1$
  command_name                  check_mk_active-http

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Code Block
languagebash
themeRDark
OMD[mysite]:~/lib/nagios/plugins$ lq "GET services\nColumns:host_name description check_command_expanded\nFilter: host_name = localhost\nFilter: description = HTTPS HTTPS"
localhost;HTTPS HTTPS;check_mk_active-http!'-u' 'https://www.google.decom/' '--ssl' '--onredirect=follow' '-j' 'CONNECT' '--sni' '-p' '3128proxy_port' '173.212.220.96myproxyip' 'www.google.decom'

In both cases: Copy the parameters after the '!' for executing the command later.

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Code Block
languagebash
themeRDark
OMD[mysite]:~/lib/nagios/plugins$ ./check_http '-u' 'https://www.google.decom/' '--ssl' '--onredirect=follow' '-j' 'CONNECT' '--sni' '-p' '3128proxy_port' '173.212.220.96myproxyip' 'www.google.decom'


For a detailed log, you can use --verbose at the end of the command:

Code Block
languagebash
themeRDark
OMD[mysite]:~/lib/nagios/plugins$ ./check_http '-u' 'https://www.google.decom/' '--ssl' '--onredirect=follow' '-j' 'CONNECT' '--sni' '-p' '3128proxy_port' '173.212.220.96myproxyip' 'www.google.decom' --verbose


For more information, you can use --help command flag.

Code Block
languagebash
themeRDark
OMD[mysite]:~/lib/nagios/plugins$ ./check_http --help

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