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Ansible basic config ​

Ansible can be used quickly, for example to send command to all nodes in a cluster.

Install ansible ​

bash
sudo apt update
sudo apt install ansible -y

Create Ansible hosts ​

bash
sudo mkdir -p /etc/ansible
sudo chmod 755 /etc/ansible
sudo vim /etc/ansible/hosts
ini
[master]
cb-master1 ansible_connection=local

[workers]
cb-node-1 ansible_connection=ssh
cb-node-2 ansible_connection=ssh

[cube:children]
master
workers

Test Ansible ​

bash
ansible cube -m ping

Generate SSH Keys to manage Compute Blade Clusters with SSH/Ansible ​

bash
cd
mkdir -p ~/.ssh
chmod 700 ~/.ssh
ssh-keygen -t rsa

ssh-copy-id -i ~/.ssh/id_rsa.pub root@cb-node-1
ssh-copy-id -i ~/.ssh/id_rsa.pub root@cb-node-2
ssh-copy-id -i ~/.ssh/id_rsa.pub root@cb-master1

send reboot command to all workers nodes ​

bash
ansible workers -b -m shell -a "init 6"