Making check_http run properly on the remote server

OK, time to turn to the LD_LIBRARY_PATH trick. This tells the system to look for libraries in the directory where I copied them first.

[rudd-o@amauta2 ~]$ export LD_LIBRARY_PATH=$HOME/nagios/lib
[rudd-o@amauta2 ~]$ nagios/bin/check_http
nagios/bin/check_http: relocation error: /home/rudd-o/nagios/lib/libc.so.6: symbol _dl_tls_get_addr_soft, version GLIBC_PRIVATE not defined in file ld-linux.so.2 with link time reference

Relowhat? I couldn’t run check_http directly, since the linker is linked against version 2.2 of the C library, and the program is linked against version 2.4. Damn.

But here comes the linker I copied (part of the GNU C library) to the rescue:

[rudd-o@amauta2 ~]$ nagios/lib/ld-linux.so.2 nagios/bin/check_http
check_http: Could not parse arguments
Usage: check_http -H <vhost> | -I <IP-address> [-u <uri>] [-p <port>]
       [-w <warn time>] [-c <critical time>] [-t <timeout>] [-L]
       [-a auth] [-f <ok | warn | critcal | follow>] [-e <expect>]
       [-s string] [-l] [-r <regex> | -R <case-insensitive regex>] [-P string]
       [-m <min_pg_size>:<max_pg_size>] [-4|-6] [-N] [-M <age>] [-A string] [-k string]

Great! Let’s create a nagiosrun script to automate this odious task, and save it in my bin/ directory:

[rudd-o@amauta2 ~]$ cat bin/nagiosrun

!/bin/bash

export LD_LIBRARY_PATH=$HOME/nagios/lib exec $HOME/nagios/lib/ld-linux.so.2 "$@" This snippet (once made executable) simply automates the setup of the library path, then execs the arguments I pass. Now I can do:

[rudd-o@amauta2 ~]$ nagiosrun nagios/bin/check_http

Keep reading to find out how I run this command from my home workstation.

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This entry was posted on Sunday, September 17th, 2006 at 1:58 and is filed under Free software, Server management, Software bacán, Tutorials. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.