GA changes to docs for Agent

src/pages/docs/infrastructure/deployment-targets/kubernetes/kubernetes-agent/troubleshooting.md

@@ -44,6 +44,14 @@ If the Agent install command fails with a timeout error, it could be that:
 - (if using the NFS storage solution) The NFS CSI driver has not been installed
 - (if using a custom Storage Class) the Storage Class name doesn't match
 
+#### 404 error when setting up the NFS Pod.
+
+Check if your version of help is up to date. In versions the error message you might be experiencing is [not shown]([url](https://github.com/helm/helm/blob/1ec0aacb8865d5b1f7ef1cb884bbf9b12579ecef/pkg/action/install.go#L753-L769)).
+
+Once you version of help is up to date, run `helm repo update` and try again.
+
+If you're still having issues where Helm fails to retrieve a remote chart if there are [local repos that are not cached](https://github.com/helm/helm/issues/11961) look at work arounds provided on that helm-issue page. If that doesn't help, please [get in touch](https://octopus.com/support).
+
 ## Script Execution Issues
 
 ### `Unexpected Script Pod log line number, expected: expected-line-no, actual: actual-line-no` 
@@ -62,3 +70,38 @@ If you are using the default NFS storage however, then the script pod would be d
 
 - being evicted due to exceeding its storage quota
 - being moved or restarted as part of routine cluster operation
+
+## Frequently Asked Questions {#FAQ}
+
+### Can the agent work with Octopus running in an HA Cluster setup?
+Yes! See the [Kubernetes agent HA Cluster Support](/docs/infrastructure/deployment-targets/kubernetes/kubernetes-agent/ha-cluster-support) page.
+
+
+### Can a proxy be specified when setting up the Kubernetes agent? 
+Yes! Proxy servers for the polling connection that takes place between the agent and Octopus Server. These can be supplied for setup via the `.pollingProxy.*`  helm values.
+
+Define the polling proxy server through the `agent.pollingProxy.host`, `agent.pollingProxy.port`, `agent.pollingProxy.username` and `agent.pollingProxy.password` values via the [octopusdeploy/kubernetes-agent](https://hub.docker.com/r/octopusdeploy/kubernetes-agent) helm chart.
+
+### When trying to install the Kubernetes Agent on an existing cluster, I get an 401: Unauthorized response.
+
+Check where and how the particular command being executed is running, and if the expected auth context is set up. For example: are you logged in to Docker Hub locally if that's where you're doing the setup from.
+
+### Do I need to have the NFS CSI Driver?
+Not for all configurations. It depends, the installation wizard will guide you.
+
+If you are using `azurefile` then you don't need the NFS CSI driver. 
+
+If you're using a new/clean AKS instance then you will need to install the NFS CSI Driver, as that AKS instance will not have the NFS CSI driver installed.
+
+### I have unexpected behavior with the polling endpoints in a HA configuration.
+This could be a variety of issues. First check that different PORTS and/or URLs are used for each node. 
+
+Check what was supplied to `agent.serverCommsAddresses` as they must be unique for [each Octopus node being registered against](https://octopus.com/docs/administration/high-availability/maintain/polling-tentacles-with-ha#connecting-polling-tentacles).
+
+If that doesn't help, please [get in touch](https://octopus.com/support).
+
+### I'm having strange behavior relating to ingress in a HA configuration.
+Carefully look and see that there is a `serverCommsAddress` property for backwards compatibility, and a `serverCommsAddresses` the latter supporting an array input, mistyping these can happen. This has presented itself as a variety of errors depending on the broader configuration, e.g. you may see "it failed to allocate the public ip" if using load balancers.
+
+### The Script Pod seems to hang during a deployment
+The times this has been brought up it's been specific to the deployment process being executed. Run subsets of your process to narrow down the cause, or [get in touch](https://octopus.com/support) with info on how we can reproduce what you're seeing.