feat: add instruction for uninstalling

README.md

@@ -375,3 +375,4 @@ kubectl apply -f awx-secret-tls.yaml
 - [📁 **Tips**](tips)
   - [📝Expose `/etc/hosts` to Pods on K3s](tips/expose-hosts.md)
   - [📝Redirect HTTP to HTTPS](tips/https-redirection.md)
+  - [📝Uninstall deployed resouces](tips/uninstall.md)

tips/README.md

@@ -2,3 +2,4 @@
 
 - [📝Expose `/etc/hosts` to Pods on K3s](expose-hosts.md)
 - [📝Redirect HTTP to HTTPS](https-redirection.md)
+- [📝Uninstall deployed resouces](uninstall.md)

tips/expose-hosts.md

@@ -1,4 +1,3 @@
-
 # Expose your `/etc/hosts` to Pods on K3s
 
 If we don't have a DNS server and are using `/etc/hosts`, we will need to do some additional tasks to get the Pods on K3s to resolve names according to `/etc/hosts`.

tips/uninstall.md

@@ -0,0 +1,69 @@
+<!-- omit in toc -->
+# Uninstall deployed resouces
+
+<!-- omit in toc -->
+## Table of Contents
+
+- [Uninstall resources on Kubernetes](#uninstall-resources-on-kubernetes)
+- [Remove data in PVs](#remove-data-in-pvs)
+- [Uninstall K3s](#uninstall-k3s)
+
+### Uninstall resources on Kubernetes
+
+In kubernetes, you can deploy resources with `kubectl create -f (-k)` or `kubectl apply -f (-k)` by specifying manifest files, and similarly, you can use manifest files to delete resources by `kubectl delete -f (-k)` command.
+
+For example, some resources deployed with the following command;
+
+```bash
+$ kubectl apply -k base
+namespace/awx created
+secret/awx-admin-password created
+secret/awx-postgres-configuration created
+secret/awx-secret-tls created
+persistentvolume/awx-postgres-volume created
+persistentvolume/awx-projects-volume created
+persistentvolumeclaim/awx-projects-claim created
+awx.awx.ansible.com/awx created
+```
+
+can be deleted with the following command with same manifest files.
+
+```bash
+$ kubectl delete -k base
+namespace "awx" deleted
+secret "awx-admin-password" deleted
+secret "awx-postgres-configuration" deleted
+secret "awx-secret-tls" deleted
+persistentvolume "awx-postgres-volume" deleted
+persistentvolume "awx-projects-volume" deleted
+persistentvolumeclaim "awx-projects-claim" deleted
+awx.awx.ansible.com "awx" deleted
+```
+
+Or, you can delete all resources in specific namespace by deleting that namespace. PVs cannot be deleted in this way since the PVs are namespace-independent resources, so they need to be deleted manually.
+
+```bash
+$ kubectl delete ns awx
+namespace "awx" deleted
+
+$ kubectl delete pv <volume name>
+persistentvolume "<volume name>" deleted
+```
+
+### Remove data in PVs
+
+All manifest files in this repository, the PVs were persisted under `/data/<volume name>` on the K3s host using `hostPath`.
+
+If you want to initialize the data and start all over again, for example, you can delete the data manually.
+
+```bash
+sudo rm -rf /data/<volume name>
+```
+
+### Uninstall K3s
+
+K3s comes with a handy uninstall script. Once executed, it will perform an uninstall that includes removing all resources deployed on Kubeneretes.
+
+```bash
+/usr/local/bin/k3s-uninstall.sh
+```