Support profiling for keda components (#1250)

Signed-off-by: yuval weber <[email protected]>
Co-authored-by: Zbynek Roubalik <[email protected]>

content/troubleshooting/profiling-keda-components.md

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+title = "Troubleshoot KEDA errors using profiling"
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+
+In Golang we have the possibility to profile specific actions in order to determine what causes an issue.
+For example, if our `keda-operator` pod is keeps getting OOM after a specific time, using profilig we can profile the heap and see what operatios taking all of this space.
+
+Golang support many profiling options like heap, cpu, goroutines and more... (for more info check this site https://pkg.go.dev/net/http/pprof).
+
+In KEDA we provide the option to enable profiling on each component separately by enabling it using
+the Helm chart and providing a port (if not enabled then it won't work).
+
+```yaml
+profiling:
+  operator:
+    enabled: false
+    port: 8082
+  metricsServer:
+    enabled: false
+    port: 8083
+  webhooks:
+    enabled: false
+    port: 8084
+```
+
+If not using the Helm chart then you can enable the profiling on each on of components by specifying the
+following argument in the respective container
+```bash
+--profiling-bind-address=":8082"
+```
+and it will be exposed on the port you specified.
+
+After enabling it you can port-forward or expose the service and use tool like go tool pprof in order to get profiling data.
+
+For more info look at this document https://go.dev/blog/pprof.