ansible.txt

Part 1 Create 3 ubuntu VM’s or Docker container 
step 1 , step 2 and step 3

Part 2 install Ansible and requires tools in ansible_master 
step 4 ,

Part 3 Setup n number of target machines (2)/ container(2) configure SSH and allow 
PermitRootLogin and change the root password 
step 5 , step 6 , step 7, step 8 , step 9

Part 4 Perform the same all steps with target 2 and so on
step 10

Part 5  Find the IP’s of all targets container  for adding in ansible host file
step 11 

Part 6 setup ansible_master for ssh connectivity  and adding IP’s in hostfile
 step 12 , step 13 , step 14 

Part 7 copy the generated ssk keys from ansible_master to target machine and check the connectivity
step 15 , step 16 

Part 8 create a ansible playbook and run 
step 17 

Part 9 Login to the target machine / Container and verify  is nginx installed or not


---------------

Step 1 Go to docker playground create an  instance / node and create 3 Ubuntu  container 

1st - ansible_master 
2nd target 1
3rd target 2

Step 2 create containers 

docker run -itd --name ansible_master ubuntu /bin/bash
docker run -itd --name target1 ubuntu /bin/bash
docker run -itd --name target2 ubuntu /bin/bash


done  


Step 3 check the process and name for verification 
docker ps

CONTAINER ID        IMAGE               COMMAND             CREATED              STATUS              PORTS               NAMES
75cb389ef9af        ubuntu              "/bin/bash"         About a minute ago   Up About a minute                       target
2
2ab9d8441caf        ubuntu              "/bin/bash"         About a minute ago   Up About a minute                       target
1
6eb1763de81f        ubuntu              "/bin/bash"         About a minute ago   Up About a minute                       ansibl
e_master


done 

Part 2 install Ansible and requies tools in ansible_master 
Step 4 go to ansible_master container  update the ubuntu and install some dependencies and ansible

docker exec -it ansible_master bash
apt update
apt install python ansible vim iputils-ping openssh-client -y
ansible --version


done 


--------------

Part 3 Setup n number of target machines (2)/ container(2)Login to Target and setup target 1 

Step 5  Login to target 1 
docker exec -it target1 bash


docker exec -it target2 bash
done 

Step 6 Update and install SSH and required dependencies 
apt update
apt install vim python iputils-ping openssh-client -y
apt-get install openssh-client openssh-server -y
Geographical area 6city 44

done 

Step 7 edit sshd_config to allow SSH and root login as ansible requires

cd /etc/ssh 
vi sshd_config
uncomment the parameter and modify the permission to yes PermitRootLogin yes and PasswordAuthentication yes


done 


Step 8 Start the service ssh if its not running
service ssh status
service ssh start 
service ssh status 

done   taget 2 

------------------------------------


Step 9 change the root password to admin 
passwd root
admin
admin

root has a passwod admin 

done  


ansible -- target1  root 


done 

target 1  and target 2


Part 4 Perform the same all steps with target 2 and so on
Step 10 


Part 5  Find the IP’s of all targets container  for adding in ansible host file 
Come out to docker node and run the command 

Step 11
sudo docker inspect target1
sudo docker inspect target2 


You will find the IPAddress like 172.17.0.3

  "IPAddress": "172.17.0.3",    - 1
  "IPAddress": "172.17.0.4",     - 2
  
  -------------
  
  
Part 6 setup ansible_master for ssh connectivity  and adding IP’s in hostfile


Step 12  go to ansible_master

docker exec -it ansible_master bash

Step 13 edit ansible host file and provide the target IP’s
cd /etc/ansible/
ls
Go to hosts file
provide the IP of the target machines


done 

Step 14 verify as you are able to ping target machine from ansible_master

Ping  <Target machine IP>


ping 172.17.0.3


done


go back to master machine

Step 15 
generate the ssh key from the ssh-keygen command 

ssh-keygen
provide 3 times enter    (1 location verification + 2 time for passwd )

 done 
 
 generated  
 
 
 
 
 ----
 
 Part 7 copy the generated ssh keys from ansible_master to target machine and check the connectivity

Step 15 Copy the generated key from ansible_master to remote target 

ssh-copy-id root@172.17.0.3
yes


target 1 

--- 2 will fail  --

ssh root@172.17.0.3


target 1   -- nginx  -- 

not in target 1 
root@2ab9d8441caf:~# service nginx status
nginx: unrecognized service




----------------

Part 8 Now create a ansible playbook  and run  ansible-playbook 

Step 17 :- create a installnginx.yaml file in 
cd /etc/ansible
vi installnginx.yaml




---
- hosts: all
  tasks:
    - name: ensure nginx is at the latest version
      apt: name=nginx state=latest
    - name: start nginx
      service:
          name: nginx
          state: started
		  
		  



don e_master



Step 18 :   Run ansible playbook

ansible-playbook installnginx.yaml