以 ansible 安裝 consul in openSUSE Leap 42.1

Consul with ansible

因為之後 docker swarm 需要用到 consul , 所以就建立 consul

OS: openSUSE Leap 42.1

一般建立 consul 的作法

建立使用者 consul ( 不一定要建立這個使用者, 這個是工作上協調的結果 )

#useradd  -m  consul

建立相關目錄

#mkdir  -p  /opt/consul/bin   /opt/consul/data   /opt/consul/config

設定權限以及更改擁有人為使用者 consul

#chown  -R  consul   /opt/consul/

#chmod  -R  700  /opt/consul/

從網路取得 consul 並解壓縮 zip ( 這邊以 0.6.4 為例 )

#wget   https://releases.hashicorp.com/consul/0.6.4/consul_0.6.4_linux_amd64.zip

#unzip  consul_0.6.4_linux_amd64.zip

將 consul 複製到指定的目錄

#cp  consul   /opt/consul/bin

切換使用者 consul

#su  -  consul

編寫設定檔 ( 這邊我們是先試用官方的服務 https://atlas.hashicorp.com/consul )

>vi   /opt/consul/config/atlas_consul.json

{

 "bind_addr": "請填入機器IP",

 "atlas_infrastructure": "請填入帳號/請填入名稱",

 "atlas_join": true,

 "atlas_token": "請填入自己的token",

 "bootstrap_expect": 3,

 "datacenter": "Hsinchu-NCHC",

 "data_dir": "/opt/consul/data",

 "log_level": "INFO",

 "node_name": "請填入主機名稱",

 "encrypt": "請填入加密的資訊",

 "server": true

}

啟動 consul agent

> /opt/consul/bin/consul   agent   -config-dir   /opt/consul/config/

目前是用 nohup 方式在背景執行, 然後離開

> nohup /opt/consul/bin/consul agent -config-dir /opt/consul/config/ &

停止 consul 的方式( 這樣不會產生 error )

/opt/consul/bin/consul  leave

------- Ansible 方式 ----------

接下來自己寫了一個 ansible 的playbook 來安裝 consul

檔案名稱 Consul_install.yml

---

#########################################################  

# Install consul and setup boot

- name: use when conditionals and setup module (facts)

 hosts: all

 tasks:

# 使用 setup moudule 列出 OS 種類

   - name: use setup module to list os distribution

# setup moudle 可以使用 filter 過濾相關內容

     setup: filter=ansible_distribution

#########################################################  

- name: Install consul , add user and setting up env

# use group

 hosts: ConsulHost

 sudo: True

 tasks:

   - name: Add user consul

     user: name=consul

   - name: Create folder for consul

     file: path=/opt/consul/{{ item }} state=directory owner=consul mode=700

     with_items:

       - bin

       - data

       - config

   - name: Install wget with openSUSE Leap

     zypper: name={{ item }}

     with_items:

       - wget

     when: ansible_distribution == "openSUSE Leap"

   - name: Install wget with CentOS

     yum: name={{ item }}

     with_items:

       - wget

     when: ansible_distribution == "CentOS"

   - name: Install wget with Ubuntu

     apt: name={{ item }} update_cache=yes

     with_items:

       - wget

     when: ansible_distribution == "Ubuntu"

#-------------------------------------------------------  

   - name: Get consul 0.6.4 zip

     shell: wget   https://releases.hashicorp.com/consul/0.6.4/consul_0.6.4_linux_amd64.zip

#-------------------------------------------------------  

   - name: Unzip consul 0.6.4 zip file

     shell: unzip consul_0.6.4_linux_amd64.zip

#-------------------------------------------------------  

   - name: Copy consul to path

     shell: cp consul /opt/consul/bin

#########################################################  

# Copy config files with user consul

- name: copy config files with user consul

 hosts: ConsulHost

 tasks:

   - name: use setup module to list os distribution

     become_user: consul

     become: yes

     template: src=templates/atlas_consul.json dest=/opt/consul/config/atlas_consul.json

# 這個部份有待討論如何在背景執行 可能要寫成服務的方式, 目前會斷

#    - name: running consul at backgroud

#      become_user: consul

#      become: yes

#      shell: nohup /opt/consul/bin/consul agent -config-dir /opt/consul/config &

檔案 templates/atlas_consul.json

{% for host in groups['ConsulHost'] %}

{

 "bind_addr": "{{ hostvars[host].ansible_default_ipv4.address }}",

 "atlas_infrastructure": "請填入帳號/請填入名稱",

 "atlas_join": true,

 "atlas_token": "請填入自己的token",

 "bootstrap_expect": 3,

 "datacenter": "Hsinchu-NCHC",

 "data_dir": "/opt/consul/data",

 "log_level": "INFO",

 "node_name": "{{ hostvars[host].ansible_hostname }}",

 "encrypt": "請填入加密的資訊",

 "server": true

}

{% endfor %}