more stuff

Author: ignazio21

Ansible/3_Playbooks/0_RECAP_THEM_ALL

@@ -0,0 +1,20 @@
+# Run a playbook to execute locally specifying 127.0.0.1
+# LOCAL connection to skip SSH
+# Skip the USER and ROOT
+# The USER that is going to be used is the one that will EXECUTE the playbook
+# SUDO can be done at command line
+# Present make sure that the package is going to be installed and nothing more
+# LATEST instead means that even if it is installed, make sure it is the latest verstion
+
+$vi local.yml
+
+--- # LOCAL ACTION PLAYBOOK
+- hosts: 127.0.0.1
+  connection: local
+  tasks:
+    - name: Install telnet
+      yum: pkg=telnet state=latest
+
+# ONE TO RUN IT
+
+$ansible-playbook -s local.yml 

Ansible/3_Playbooks/18_Local Actions

@@ -0,0 +1,21 @@
+# Way to LOOP certain commands with variable substitution to run multiple times
+# Multiple types
+ -> # nested loops
+ -> # loops with index array
+# Use the USER module
+  -> it will ITERATE the ITEMS in "with_items" and add them!
+$vi loop.yml
+
+---# LOOP Playbook Example
+- hosts: web
+  user: centos
+  become: yes
+  connection: ssh
+  gather_facts: no
+  tasks:
+    - name: Add a list of users
+      user: name={{ item }} state=present
+      with_items:
+        - user1
+        - user2
+        - user3

Ansible/3_Playbooks/19_Loops

@@ -0,0 +1,22 @@
+# CONDITIONAL statements
+# Used in case of <something_happen>
+# Keyword WHEN to indicate the action
+# This case GATHER_FACTS is NEEDED to rely on it
+
+ $vi when.yml
+
+ --- # WHEN PLAYBOOK
+ - hosts: nodes
+   user: vagrant
+   become: yes
+   connection: ssh
+   tasks:
+     - name: Install apache appropriate to Debian distribution
+       command: apt-get -y install apache2
+       when: ansible_os_family == "Debian"
+     - name: Install apache appropriate to Centos distribution
+       command: yum -y install httpd
+       when: ansible_os_family == "RedHat"
+
+# TO CHECK FIRST THE COMMAND
+$ansible nodes -m setup -a 'filter=ansible_os_type'

Ansible/3_Playbooks/20_Conditionals

@@ -0,0 +1,31 @@
+# Run a command until something changes.
+# limit the number of time to retry that command
+# register the RESULT
+# -1 refer to FAILURE
+# The "Verify service status" is going to run UNTIL the result will be different
+# then -1 (Failure).
+# This means that will end when the result will find the Active
+# 0 = SUCCESS
+# Once is 0 (SUCCESSFULL) will end
+# Delay the RETRY of 5 SECONDS
+
+$vi until.yml
+--- # Until Playbook
+- hosts: nodes
+  become: yes
+  remote_user: vagrant
+  connection: ssh
+  gather_facts: no
+  tasks:
+    - name: Install Apache
+      yum: pkg=httpd state=latest
+    - name: Verify service status
+      shell: systemctl status httpd
+      register: result
+      until: result.stdout.find("active (running)") != -1
+      retries: 5
+      delay: 5
+    - debug: var=result
+
+# IT will attempt that the status is "active"
+# To do that, in the NODE start apache and check back in the controller the RESULT

Ansible/3_Playbooks/21_Until

@@ -0,0 +1 @@
+-> SEE 9_HANDLER SECTION

Ansible/3_Playbooks/22_Notify

@@ -0,0 +1,35 @@
+# ENCRYPT THE YAML FILE
+# In case we have sensitive information inside the YAML file
+
+$vi account.yml
+
+git_user: gituser
+git_pwd: gitpassword
+admin_user: admin
+admin_pwd: adminpassword
+
+# TO ENCRYPT a file
+
+$ansible-vault encrypt accounts.yml
+
+# To ENCRYPT the file
+
+$ansible-vault create secure.yml
+-> Vault password will be asked
+
+value1: somevalue
+
+$cat secure.yml
+-> We can see that the file is ENCRYPTED using the password
+
+# To edit the file and UN-ENCRYPT
+
+$ansible-vault edit secure.myl
+
+# To change the PASSWORD used to ENCRYPT the file
+
+$ansible-vault rekey secure.yml
+
+# TO UN-ENCRYPT a file
+
+$ansible-vault decrypt secure.yml

Ansible/3_Playbooks/23_Vault

@@ -0,0 +1,19 @@
+# TO PROMPT THE USER
+# PRIVATE to prompt the input the user types or NOT
+# IN DEVOPS (using JENKINS for example) we can get INPUTs that are the OUTPUT of other actions
+
+$vi prompt.yml
+
+--- # PROMPT
+- hosts: nodes
+  ...
+  vars:
+    playbook_version: 0.01b
+  vars_prompt:
+    - name: pkgtoinstall
+      prompt: Package to install?
+      default: telnet
+      private: no
+  tasks:
+    - name: Install the package
+      yum: pkg={{ pkgtoinstall }} state=latest

Ansible/3_Playbooks/24_Prompt-Interactive Playbook

@@ -1,4 +1,4 @@
-# ability to notify another section when something happens
+# ability to NOTIFY another section when something happens
 # create an Action to install the HTTPD server
 # use YUM pkg to install apache
 # NOTIFY Value must mach the HANDLERS name Value
@@ -10,9 +10,9 @@
 
 $vi myfirstplaybook.yml
 
-- hosts: web
-  user: centos
-  # UNDERSTAND BECOMING SUDO
+- hosts: nodes
+  user: vagrant
+  become: yes
   connection: ssh
   gather_facts: no
   vars:

Ansible/3_Playbooks/25_Basic Include Statements

@@ -3,3 +3,5 @@ sudo yum install -y yum-utils
 sudo yum-config-manager --add-repo https://packages.docker.com/1.12/yum/repo/main/centos/7
 yum list docker-engine.x86_64  --showduplicates |sort -r
 yum install -y docker-engine-1.12.3.cs4-1.el7.centos
+systemctl start docker
+chkconfig docker on