ansible--etcd集群部署

手工部署服务：

手工安装

三台服务器均执行
##下载服务包：
	wget https://github.com/etcd-io/etcd/releases/download/v3.4.13/etcd-v3.4.13-linux-amd64.tar.gz
## 解压文件
	tar -zxvf etcd-v3.4.13-linux-amd64.tar.gz
## 创建run.sh
	TOKEN=etcd_test
	CLUSTER_STATE=new
	DATA_DIR=/data/op/etcd-v3.4.13-linux-amd64/data_etcd
	NAME_1=k8s-slave2		##主机名1
	NAME_2=k8s-slave1		##主机名2
	NAME_3=k8s-master		##主机名3
	HOST_1=10.10.80.176		##主机地址1
	HOST_2=10.10.80.177		##主机地址2
	HOST_3=10.10.80.178		##主机地址3
	CLUSTER=${NAME_1}=http://${HOST_1}:2388,${NAME_2}=http://${HOST_2}:2388,${NAME_3}=http://${HOST_3}:2388
	THIS_NAME=${NAME_1}		## 第几个主机名
	THIS_IP=${HOST_1}		## 第几个主机地址
	./etcd --data-dir=${DATA_DIR} --name ${THIS_NAME} \
	--initial-advertise-peer-urls http://${THIS_IP}:2380 --listen-peer-urls http://${THIS_IP}:2380 \
	--advertise-client-urls http://${THIS_IP}:2379 --listen-client-urls http://${THIS_IP}:2379 \
	--initial-cluster ${CLUSTER} \
	--initial-cluster-state ${CLUSTER_STATE} --initial-cluster-token ${TOKEN}
## 启动：
	nohup sh ./run.sh > /dev/null 2>&1 &

ansible自动部署：

相关安装包下载链接：

链接：https://pan.baidu.com/s/1DYU-JBod0HAAX5foyFs48w 
提取码：7571
## etcd-v3.4.13-linux-amd64.tar.gz

目录结构：

[root@localhost ansible]# tree etcd_install/
etcd_install/
├── conf
│   └── run.sh
├── etcd.yml
├── id_rsa
├── inv
├── README.TXT
└── run.sh

---

etcd.yml配置文件

- name: etcd集群安装
  hosts: all
  gather_facts: no
  remote_user: sa
  become_user: root
  serial: 3
  vars:
  tasks:
    - name: 下载安装包 {{ etcd_package }}
      get_url:
        url: '{{ http_url }}{{ etcd_package }}'
        dest: '{{ download_dir }}'
        mode: 0644
        force: no
        checksum: '{{ etcd_md5 }}'
      become: yes
    - name: 解压安装包 {{ etcd_package }} 到 {{ Unpack }}
      unarchive:
        src: '{{ download_dir }}{{ etcd_package }}'
        dest: '{{ Unpack }}'
        remote_src: yes
      args:
        creates: '{{ etcd_file }}'
      become: yes
    - name: 传输文件到 {{ addr_1 }}
      template:
        src: ./conf/run.sh
        dest: '{{ pro_dir }}'
      vars:
        THIS_NAME: '${NAME_1}'
        THIS_IP: '${HOST_1}'
      when: inventory_hostname == (addr_1)
      become: yes
    - name: 传输文件到 {{ addr_2 }}
      template:
        src: ./conf/run.sh
        dest: '{{ pro_dir }}'
      vars:
        THIS_NAME: '${NAME_2}'
        THIS_IP: '${HOST_2}'
      when: inventory_hostname == (addr_2) 
      become: yes
    - name: 传输文件到 {{ addr_3 }}
      template:
        src: ./conf/run.sh
        dest: '{{ pro_dir }}'
      vars:
        THIS_NAME: '${NAME_3}'
        THIS_IP: '${HOST_3}'
      when: inventory_hostname == (addr_3)
      become: yes
    - name: 启动服务etcd
      shell: nohup sh ./run.sh > /dev/null 2>&1 &
      args:
        chdir: '{{ pro_dir }}'
      become: yes

---

run.sh配置文件

cd `dirname $0`

IP=`awk 'BEGIN{ ORS="" }{a[NR]=$1}END{for(i=1;i<=NR;i++){print i%5?a[i]",":a[i]"\n"}}' inv`
addr_1=`awk 'NR == 1' inv | awk {'print $1'}`
addr_2=`awk 'NR == 2' inv | awk {'print $1'}`
addr_3=`awk 'NR == 3' inv | awk {'print $1'}`
HOSTNAME_1=`awk 'NR == 1' inv | awk {'print $2'}`
HOSTNAME_2=`awk 'NR == 2' inv | awk {'print $2'}`
HOSTNAME_3=`awk 'NR == 3' inv | awk {'print $2'}`

## 安装包源
http_url='http://192.168.1.230/packages/'
## etcd安装包名称
etcd_package='etcd-v3.4.13-linux-amd64.tar.gz'
## etcd安装包md5值
etcd_md5='md5:b4a093f33fb75e49f2b53f8062ead621'
## 解包路径
Unpack='/data/op/'
## 拉包存放位置
download_dir='/tmp/'
## etcd解压完成路径
pro_dir='/data/op/etcd-v3.4.13-linux-amd64/'
## etcd解压完成标识
etcd_file='data/op/etcd-v3.4.13-linux-amd64/etcdctl'


ansible_options="
    -e addr_1=$addr_1
    -e addr_2=$addr_2
    -e addr_3=$addr_3
    -e HOSTNAME_1=$HOSTNAME_1
    -e HOSTNAME_2=$HOSTNAME_2
    -e HOSTNAME_3=$HOSTNAME_3
    -e http_url=$http_url
    -e etcd_package=$etcd_package
    -e etcd_md5=$etcd_md5
    -e Unpack=$Unpack
    -e download_dir=$download_dir
    -e pro_dir=$pro_dir
    -e etcd_file=$etcd_file"
 
ansible-playbook -i ${IP} \
    $ansible_options \
    --key-file "./id_rsa"\
    etcd.yml $*

---

inv配置文件

10.10.80.176 k8s-slave2
10.10.80.177 k8s-slave1
10.10.80.178 k8s-master

---

id_rsa配置文件

三台服务器公用的私钥

---

conf目录：

run.sh配置文件

TOKEN=etcd_test
CLUSTER_STATE=new
DATA_DIR=/data/appdata/etcd/data.etcd
NAME_1={{ HOSTNAME_1 }}
NAME_2={{ HOSTNAME_2 }}
NAME_3={{ HOSTNAME_3 }}
HOST_1={{ addr_1 }}
HOST_2={{ addr_2 }}
HOST_3={{ addr_3 }}
CLUSTER=${NAME_1}=http://${HOST_1}:2380,${NAME_2}=http://${HOST_2}:2380,${NAME_3}=http://${HOST_3}:2380
THIS_NAME={{ THIS_NAME }}
THIS_IP={{ THIS_IP }}
./etcd --data-dir=${DATA_DIR} --name ${THIS_NAME} \
        --initial-advertise-peer-urls http://${THIS_IP}:2380 --listen-peer-urls http://${THIS_IP}:2380 \
        --advertise-client-urls http://${THIS_IP}:2379 --listen-client-urls http://${THIS_IP}:2379 \
        --initial-cluster ${CLUSTER} \
        --initial-cluster-state ${CLUSTER_STATE} --initial-cluster-token ${TOKEN}

---

测试验证：

./etcdctl --write-out=table --endpoints="10.10.80.176:2388,10.10.80.177:2388,10.10.80.178:2388" member list
./etcdctl --write-out=table --endpoints="10.10.80.176:2388,10.10.80.177:2388,10.10.80.178:2388" endpoint status

[root@k8s-master /data/op/etcd-v3.4.13-linux-amd64]$ ./etcdctl --endpoints="10.10.80.176:2388" put  /test "123行不行"
OK
[root@k8s-master /data/op/etcd-v3.4.13-linux-amd64]$ ./etcdctl --endpoints="10.10.80.176:2388" get  /test "123行不行"
/test
123行不行