Health Check Status
In the server list, the Health Check Status column displays one of the following icons:
• Green icon — The server health check is currently detecting that the web server is responsive to connections (“up”).
| The green icon does not indicate whether the policy is enabled or disabled. Depending on the operation mode, a disabled policy may block traffic from clients to the web server, effectively causing the web server to appear to be “down” to clients, even though it is “up” to FortiWeb. See “Enabling or disabling a policy”. It also does not indicate both HTTP and HTTPS separately. Protocol and port number used are according to your configuration in the server pool. |
• Flashing yellow-to-red or grey icon — Either:
• no server health check is currently configured for that combination of server pool and policy
• the server health check is currently detecting that the web server is not responsive to connections (“down”)
The method that the FortiWeb appliance uses to reroute connections to an available server varies by your configuration of
“Load Balancing Algorithm”. For information on server health checks, see
“Configuring server up/down checks”.
If the server health check is mistakenly detecting that your web server is “down,” but it is actually “up,” verify that you have specified the correct SSL/TLS and port number settings for the web server in the server pool. Also verify that the web server is configured to respond to the protocol configured in the server health check, and that connections are permitted by any intermediary network or host-based firewalls such as Windows Firewall.
| Alternatively, to monitor the status of web servers, you can use SNMP traps. For details, see “SNMP traps & queries”. |