ARTH — Task 11 👨🏻‍💻

Task Description📄

🔰 11.1 Configure Hadoop and start cluster services using Ansible Playbook

To have basic knowledge on ansible refer below blog:

Saranya S on LinkedIn: ARTH - Task 10 👨🏻‍💻

MAIN STEP FOR THE TASK : CONFIGURING ANSIBLE IN CONTROL NODE -

STEP:1:Download ANSIBLE

cmd: pip3 install ansible

STEP:2:To create inventory

STEP:2.1:create a file

cmd: vim <filename>.txt [eg.,vim ip.txt or vim /root/ip.txt]

STEP:2.2:write a file

<ip> ansible_user=<user name> ansible_ssh_pass=<password> ansible_connection=ssh

Here, we have 2 managed nodes or target nodes :

1. managed node1 : For configuring namenode or masternode
2. managed node2 : For configuring datanode or slavenode

STEP:3:To create ansible configuration file

1. create a directory = cmd: mkdir /etc/ansible
2. create a file = cmd: vim /etc/ansible/ansible.cfg

3. write a file:

To check:

cmd: ansible all — list-hosts (shows ip of target nodes that are connected)

STEP:4:To connect the hosts

cmd: dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm

then install sshpass,

cmd: yum install sshpass

To check: ansible all -m ping

MAIN STEP COMPLETED!!!!

Now,create 2 playbooks one for masternode and other for datanode:

1. create a directory: cmd: mkdir /<name> [eg., mkdir /task]
2. cd /ws ->create 2 file : vim <file name>.yml

A]write in NN.yml file:

B]write in DN.yml file:

Now, play the 2 playbook:

cmd: ansible-playbook <file name>

A]play the playbook NN.yml

B]play the playbook DN.yml

To check:

1]Go to managed node1[namenode or masternode]

2]Go to managed node2[datanode or slavenode]

SUCCESSFULLY COMPLETED!!!