ansible : deployment automation

ansible/README.md

@@ -0,0 +1,49 @@
+# [Ansible](https://docs.ansible.com/)
+
+* deployment automation
+* Windows Installation ([WSL](https://geekflare.com/ansible-installation-windows/))
+
+```shell
+$ sudo apt install ansible
+
+$ nano testbook.yml
+
+```
+
+* `testbook.yml`
+
+```yml
+---
+
+- name: testing ansible 
+  hosts: localhost 
+  tasks: 
+
+    - name: echo a message 
+      debug: msg="this is working"
+```
+
+* Run the playbook
+
+```shell
+$ ansible-playbook ./testbook.yml --connection=local
+
+///
+PLAY [testing ansible] *****************************************************************************************
+
+TASK [Gathering Facts] *****************************************************************************************
+ok: [localhost]
+
+TASK [echo a message] ******************************************************************************************
+ok: [localhost] => {
+    "msg": "this is working"
+}
+
+PLAY RECAP *****************************************************************************************************
+localhost                  : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
+
+```
+
+
+
+* installation ok

ubuntu/README.md

@@ -52,10 +52,12 @@ $ chmod 777 filename
 
 ## node version manager [nvm](https://github.com/nvm-sh/nvm)
 
-* version manger for nodejs
+* For proper installing, using version manager for nodejs to install nodejs/npm
-* use nvm to avoid npm version conflict installation
+* use nvm 
-* ubuntu 20.10 support node 12
+  * to avoid npm version conflict installation with nodejs
-* ubuntu 19.10 support node 10
+  * to install / switch to lower / newer version on any version ubuntu
+* ubuntu 20.10 default support node 12
+* ubuntu 19.10 default support node 10
 
 ```shell
 // installation
@@ -65,7 +67,9 @@ $ curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh | bas
 $ wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh | bash
 
 $ export NVM_DIR="$([ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" || printf %s "${XDG_CONFIG_HOME}/nvm")"
-[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" # This loads nvm
+
+# This loads nvm
+$ [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" 
 
 // to install node version 10.10.0
 $ nvm install 10.10.0