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[Openvpn-users] Nagios monitoring a remote openvpn server


  • Subject: [Openvpn-users] Nagios monitoring a remote openvpn server
  • From: Brian Neu <proclivity76@xxxxxxxxx>
  • Date: Wed, 11 Apr 2007 15:38:16 -0700 (PDT)

In trying to monitor that the server's UDP port is still up and accepting connections, I've tried using the nagios plugin "check_udp"  like so . .

#] ./check_udp -H server.example.com -p 1194 -S
With UDP checks, a send/expect string must be specified.
Usage:check_udp -H host -p port [-w <warning time>] [-c <critical time>] [-s <send string>]
[-e <expect string>] [-q <quit string>][-m <maximum bytes>] [-d <delay>]
[-t <timeout seconds>] [-r <refuse state>] [-M <mismatch state>] [-v] [-4|-6] [-j]
[-D <days to cert expiry>] [-S <use SSL>] [-E]


I don't know what to use here for the send/expect . ..  anyone have an idea? 

BTW, should I use the "-S" or not?  Output is the same for now.


Thank you!!!!




Here is the output from check_udp --help

This plugin tests UDP connections with the specified host (or unix socket).

Usage:check_udp -H host -p port [-w <warning time>] [-c <critical time>] [-s <send string>]
[-e <expect string>] [-q <quit string>][-m <maximum bytes>] [-d <delay>]
[-t <timeout seconds>] [-r <refuse state>] [-M <mismatch state>] [-v] [-4|-6] [-j]
[-D <days to cert expiry>] [-S <use SSL>] [-E]

Options:
 -h, --help
    Print detailed help screen
 -V, --version
    Print version information
 -H, --hostname=ADDRESS
    Host name, IP Address, or unix socket (must be an absolute path)
 -p, --port=INTEGER
    Port number (default: none)
 -4, --use-ipv4
    Use IPv4 connection
 -6, --use-ipv6
    Use IPv6 connection
 -E, --escape
    Can use \n, \r, \t or \ in send or quit string.
    Default: nothing added to send, \r\n added to end of quit
 -s, --send=STRING
    String to send to the server
 -e, --expect=STRING
    String to expect in server response
 -q, --quit=STRING
    String to send server to initiate a clean close of the connection
 -r, --refuse=ok|warn|crit
    Accept tcp refusals with states ok, warn, crit (default: crit)
 -M, --mismatch=ok|warn|crit
    Accept expected string mismatches with states ok, warn, crit (default: warn)
 -j, --jail
    Hide output from TCP socket
 -m, --maxbytes=INTEGER
    Close connection once more than this number of bytes are received
 -d, --delay=INTEGER
    Seconds to wait between sending string and polling for response
 -D, --certificate=INTEGER
    Minimum number of days a certificate has to be valid.
 -S, --ssl
    Use SSL for the connection.
 -w, --warning=DOUBLE
    Response time to result in warning status (seconds)
 -c, --critical=DOUBLE
    Response time to result in critical status (seconds)
 -t, --timeout=INTEGER
    Seconds before connection times out (default: 10)
 -v, --verbose
    Show details for command-line debugging (Nagios may truncate output)


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