"Linux" "Services" "SaaS" Docker+kubernetes (4. Manage machines and software with ansible)

1. Introduction

1.1. Company environment use Puppet, but I prefer ansible, reason two, first, I am Red Hat loyalty powder:), second, I am more familiar with Python

1.2. Ansible Official website: https://www.ansible.com/

1.3. Ansible Chinese document website: http://www.ansible.com.cn/

2. Environment

2.1. Ansible:ansible-2.4.2.0-1.el7

3. Installation

3.1. Direct Yum is good

Yum Install ansible

4. Configuration

4.1. Generate SSH Key

Ssh-keygen -t RSA

4.2. Remove the list of servers from the DNS server on 10.30.2.81

Cat /var/named/hccos.cn.zone | grep 172| awk ' {print $1,$4} '| sed " s/172/.hccos.cn #172/g "

4.3. Paste the list of machines from the previous step into the/etc/ansible/hosts, and assign them to the default group.

[Default]hctjosinfra01.hccos.cn #172.16.0.81hctjosinfra02.hccos.cn #172.16.0.82hctjosetcd01.hccos.cn #172.16.0.83hctjosetcd02.hccos.cn #172.16.0.84hctjosetcd03.hccos.cn #172.16.0.85hctjcephmon01.hccos.cn #172.16.0.86hctjcephmon02.hccos.cn #172.16.0.87hctjcephmon03.hccos.cn #172.16.0.88hctjcephadm01.hccos.cn #172.16.0.89hctjosk8smaster01.hccos.cn #172.16.0.90hctjosk8sslave01.hccos.cn #172.16.0.91hctjosk8sslave02.hccos.cn #172.16.0.92hctjcephblock01.hccos.cn #172.16.0.93hctjcephblock02.hccos.cn #172.16.0.94hctjosk8snode01.hccos.cn #172.16.0.95hctjosk8snode02.hccos.cn #172.16.0.96hctjosk8snode03.hccos.cn #172.16.0.97hctjosk8snode04.hccos.cn #172.16.0.98hctjosadm01.hccos.cn #172.16.0.99hctjosmysql01.hccos.cn #172.16.0.25hctjosmysql02.hccos.cn #172.16.0.26hctjosmysql03.hccos.cn #172.16.0.27hctjoscache01.hccos.cn #172.16.0.45hctjoscache02.hccos.cn #172.16.0.46hctjoscache03.hccos.cn #172.16.0.47hctjosdr01.hccos.cn #172.16.0.48hctjosdr02.hccos.cn #172.16.0.49

4.4. Password-free login on target host for Ssh-key copy

 for  in $ (grep hctj/etc/ansible/hosts |  grep"#.*"| Cut  Do ssh-copy-ID done

4.5. Under the/etc/ansible, the architecture is set up.

[Email protected] etc]# tree/etc/ansible//etc/ansible/├──ansible.cfg├──hosts├──main.yaml└──roles    ├──   Cache    │└──cache.yaml    ├──ceph    │└──ceph.yaml    ├──default    │├──default.yaml    ├──dr    │ └──dr.yaml    ├──etcd    │└──etcd.yaml    ├──k8s    │└──k8s.yaml    └──mysql        └──mysql.yaml8 files

4.6. Edit Main.yaml

"Linux" "Services" "SaaS" Docker+kubernetes (4. Manage machines and software with ansible)