nagios critical socket timeout with check_ftp

socalheel · 03-16-2014, 01:02 PM

i'm not sure why i am getting false alarms from nagios while checking ftp on a remote server.

i have tried a few options with the check_ftp command such as increasing the timeout value to 20, 30, and 60. each of those occurrences did not solve the problem.

both the remote server and nagios server are CentOS boxes.

here is my nagios alert:

Code:

Current Status:	  CRITICAL   (for 0d 0h 22m 32s)  (Has been acknowledged)
Status Information:	CRITICAL - Socket timeout after 10 seconds

here is the manual check_ftp result:

Code:

[root@monsrvr nagios]# /usr/lib/nagios/plugins/check_ftp -H remote.server.net
FTP OK - 0.093 second response time on port 21 [220 remote.server.net FTP Service!  Access is restricted to users with valid Company hosting accounts, all other access is prohibited!]|time=0.093283s;;;0.000000;10.000000
[root@monsrvr nagios]#

any ideas?

kirukan · 03-17-2014, 04:05 AM

Can you post the configuration for check_ftp command and how you pass the arguments for this command?

socalheel · 03-17-2014, 12:22 PM

for our nagios configuration, we use a web interface (Lilac) to set up monitoring.

here is the check_ftp in services.cfg:

Code:

define service {
        host_name       servername.serverdomain
        service_description     FTP
        initial_state   o
        is_volatile     0
        max_check_attempts      7
        normal_check_interval   2
        retry_interval  1
        first_notification_delay        0
        active_checks_enabled   1
        passive_checks_enabled  1
        check_period    24x7
        parallelize_check       1
        obsess_over_service     1
        check_freshness 1
        freshness_threshold     180
        event_handler_enabled   1
        process_perf_data       1
        retain_status_information       1
        retain_nonstatus_information    1
        notification_interval   4
        notification_period     24x7
        notifications_enabled   1
        action_url      /pnp4nagios/index.php?host=$HOSTNAME$&srv=$SERVICEDESC$
        check_command   check_nrpe!check_ftp
        icon_image      plug_in.png
        display_name    FTP
        notification_options    w,u,c,r,f,s
        stalking_options        o,w,u,c
        contact_groups  Null Placeholder Group
        servicegroups   Internal Services
}

here is the check_ftp in commands.cfg

Code:

define command {
        command_name    check_ftp
        command_line    $USER1$/check_ftp -H $HOSTADDRESS$ $ARG1$ -t 30
}