health checking

3 Topics

parsing health monitor events
I've set up a system for shipping member up/down events over to Logstash which then injects into InfluxDB, giving us visualization and alerting (specifically for excessive flapping in pools). We do periodic application resets and expect each member of a given pool to "flap" (become unavailable and then return to available) only once. Sometimes members will flap more than once and we'd like to know why. I figure I can check the log lines reporting the member going down to see details on what the health monitor was noticing during its check or last three checks maybe. Here's an example line: /Common/pool_foo: down; last error: /Common/pool_foo: Tcp read: Connection refused; Unable to connect; Response Code: 200 (OK); Response Code: 404 (Not Found); No successful responses received before deadline.; Response Code: 503 (Service Unavailable); Response Code: 302 (Found); Response Code: 403 (Forbidden) @2017/11/15 02:23:40. This is a log line for a single down event. I know you're not going to get a 404, a 302, and a 503 all together in a single HTTP request, so I'm thinking the monitor is sharing the last n checks. But to make sense of what's happening and at which point, I need to be able to pull this line apart and understand which messages associate with which health check attempt and in what order. Anyone know?
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Ray_330743
Nov 22, 2022 Place Technical Forum
780Views
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HTTP monitor shows nodes unknown(enabled)
Hello, I am using the 90 day evaluation license and am just learning the device and am running into some issue. I have created 3 web servers and have them connecting via internal VLAN. I have created a health monitor in a pool using http but the web servers show offline. If I use gateway_icmp or create a monitor using http, get/ http/1.1, I show the pool is available. I can connect to each webserver via its IP address and get the webpage displayed in the browser. If I create a virtual server using service port 80, I show it is available (enabled under status. I can ping the address of the virtual server from my PC, but if I try a web browser port 80 to the address, I get web page is not available. I have tried turning off the firewall and antivirus with no success. I am lost at this point and if anyone has any suggestions, I would appreciate it. Thanks.
jbattisti_25413
Mar 13, 2016 Place Technical Forum
338Views
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3Comments
Health Montior Configuration Question - Include a different hostname
Hi all, Need some assistance with creating a health monitor that specifies the host name. I'm looking to use the following send string: GET /UI/Content/Secure/IWALogin.aspx HTTP/1.0\n but want it to check again a different host name ex: host.domain.com. Can someone help me with the syntax for such a check? Thanks, Pete
Pete_Paiva_7147
Jun 04, 2014 Place Technical Forum
340Views
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5Comments