{{tag>howto monit monitoring host ispconfig roundcube ssl certificate expiration ping ipv4 ipv6 icmp dns protocol port connection}}
====== monitoring a host ======
this is checking:
  * ping via IPv4 and IPv6
  * http connection to various FQDNs
  * expiration of SSL certificates

<sxh bash; title: /etc/monit/monitrc>
check host host.domain.tld with address host.domain.tld 
        if failed ping4 then alert
        if failed ping6 then alert
        
        # ISPConfig
        if failed
                  port 8080
                  protocol https
                  and certificate valid > 3 days
        then alert
        
        # generic domain
        if failed url https://host.domain.tld/
                  with timeout 15 seconds
                  and certificate valid > 3 days
        then alert
        
        # Roundcube
        if failed 
                  port 443
                  protocol https
                  request /webmail/
                  with timeout 15 seconds
                  and certificate valid > 3 days
                  content = "The Roundcube Dev Team"
        then alert
        group connectivity
</sxh>

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~~DISCUSSION~~