monitoring:nagios_tips
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monitoring:nagios_tips [2021/01/01 21:25] 127.0.0.1 external edit |
monitoring:nagios_tips [2023/01/18 13:03] (current) manu |
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| + | ==== Check_nrpe with SSL or not ===== | ||
| + | |||
| + | Check if commands can run with SSL | ||
| + | <cli prompt='#'> | ||
| + | [root@nagios linux]# /usr/lib64/nagios/plugins/check_nrpe -H lnx081 -c check_fs | ||
| + | OK | ||
| + | </cli> | ||
| + | |||
| + | Which on lnxb080 looks like this in config | ||
| + | <cli>check_lnx_nrpe!check_fs </cli> | ||
| + | |||
| + | Because this is a command shortcut for the command above see command.cfg | ||
| + | |||
| + | Or without: | ||
| + | <cli prompt='#'> | ||
| + | [root@nagios linux]# /usr/lib64/nagios/plugins/check_nrpe -H lnx081 -n -c check_fs | ||
| + | CHECK_NRPE: Receive header underflow - only -1 bytes received (4 expected). | ||
| + | </cli> | ||
| + | |||
| + | Which on nagios looks like this in config <cli>check_lnx_param_nossl_nrpe!check_fs </cli> | ||
| + | Because this is a command shortcut for the command above see command.cfg | ||
| + | |||
| + | The same command exists for commands with parameters e.g. check-disk | ||
| + | |||
| + | VI commands to remove all _nossl_nrpe checks: | ||
| + | <code> | ||
| + | [ESC]+:s/check_lnx_nossl_nrpe/check_lnx_nrpe/g | ||
| + | |||
| + | [ESC]+:s/check_lnx_param_nossl_nrpe/check_lnx_param_nrpe/g | ||
| + | </code> | ||
| + | |||
| + | nossl : | ||
| + | <cli> | ||
| + | command_name check_lnx_param_nossl_nrpe | ||
| + | check_nrpe -H $HOSTADDRESS$ -n -c $ARG1$ -a $ARG2$ | ||
| + | </cli> | ||
| + | <cli prompt='#'> | ||
| + | [root@nagios linux]# /usr/lib64/nagios/plugins/check_nrpe -H nagios -n -c check_disk -a 20% 35% / | ||
| + | </cli> | ||
| + | |||
| + | ssl: | ||
| + | <cli> | ||
| + | command_name check_lnx_param_nrpe | ||
| + | check_nrpe -H $HOSTADDRESS$ -c $ARG1$ -a $ARG2$ | ||
| + | </cli> | ||
| + | |||
| + | Other example | ||
| + | <cli prompt='#'> | ||
| + | [root@nagios linux]# /usr/lib64/nagios/plugins/check_nrpe -H lnx033 -c check_procs -a '-w 500 -c 700 -s RSZDT' | ||
| + | PROCS CRITICAL: 126 processes with STATE = RSZDT | procs=126;-w;-s;0; | ||
| + | [root@nagios linux]# /usr/lib64/nagios/plugins/check_nrpe -H lnx033 -n -c check_procs -a '-w 500 -c 700 -s RSZDT' | ||
| + | CHECK_NRPE: Receive header underflow - only -1 bytes received (4 expected). | ||
| + | </cli> | ||
| + | |||
| + | When playing with these configurations on the nagios server don't forget to reload nagios: | ||
| + | But before reloading check if the configurations are ok by launching: | ||
| + | <cli> | ||
| + | nagios -v /etc/nagios/nagios.cfg | ||
| + | </cli> | ||
| + | Then: | ||
| + | <cli> | ||
| + | systemctl reload nagios.service | ||
| + | </cli> | ||
| + | |||
| + | ==== Check_nrpe with parameter ===== | ||
| + | |||
| + | Server: | ||
| + | Change check_nrpe!check_users!15!20 to check_nrpe!check_users!"15 20" | ||
| + | |||
| ==== Multiple performance values ==== | ==== Multiple performance values ==== | ||
| + | When you develop a custom check, | ||
| it is possible to send more than one variable in a check. Simply seperated your variable definitions by a pipe symbol (do not use spaces). Here is an example output of a check sending three performance values: | it is possible to send more than one variable in a check. Simply seperated your variable definitions by a pipe symbol (do not use spaces). Here is an example output of a check sending three performance values: | ||
| <cli> | <cli> | ||
monitoring/nagios_tips.1609532713.txt.gz · Last modified: 2021/01/01 21:25 by 127.0.0.1
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