Network host availability check

Agent Client Collector provides the following default check for network ping monitoring. The check is available for both Windows and Linux.

Table 1. util.check-ping check

Check	Description	Usage	Command	Output
util.check-ping	Checks the network host availability via ICMP (ping) requests. Generates an OK event if the ping success ratio exceeds the Warning threshold (-W, default 50%). Generates a Warning event if the ping success ratio is between the warning threshold (-W, default 50%) and the critical threshold (-C, default 20%). Generates a Critical event if the ping success ratio falls below the critical threshold (-C, default 20%). A proxy agent is required.	check-ping.rb -h <ip-address> (options) -h host: Host to ping (Required). Default=<localhost> -c count: Number of ping requests sent to the host. Default=1 -T timeout: The timeout (in seconds) for each ping request. If the timeout expires before a reply is received, the ping is considered failed. Default=5 -6 ipv6: Enables IPv6 pinging. Ping uses IPv4 when this flag is not used. Default=False -i interval: Interval (in seconds) between each ping request. Default=1 -W ratio: The success ratio threshold for a Warning state. If the successful ping responses are below this ratio and above the -C ratio, the script returns a Warning. Default=0.5 -C ratio: The success ratio threshold for a Critical state. If the successful ping responses are below this ratio, the script returns a Critical failure. Default=0.2 -r report: Flag to append to the failure message of an MTR (My Trace Route) report if the ping fails. When MTR runs, a network diagnostic report generates. Default=false		ICMP ping unsuccessful for host: 192.168.1.1 (successful: 0/5)