Ansible安装主从哨兵redis
一、环境准备：三台服务器
112.124.35.48
120.26.50.173
121.41.13.43
目录结构：
二、主机内容
vim host_passwd.txt
112.124.35.48 523320
120.26.50.173 523320
121.41.13.43 523320
vim key.sh
#!/bin/bash
Public_Key() {
[ ! -f /usr/bin/expect ] && yum install expect -y &>/dev/null
/usr/bin/expect <<EOF
set timeout 300
spawn ssh-keygen
expect "(/root/.ssh/id_rsa):"
send "\n"
expect {
"Overwrite" { send "n\n" }
"Enter passphrase (empty for no passphrase):" {
send "\n"
expect "Enter same passphrase again:"
send "\n" }
}
expect eof
EOF
while read line;do
host=$(echo $line | awk '{print $1}')
passwd=$(echo $line | awk '{print $2}')
/usr/bin/expect <<EOF
spawn ssh-copy-id $host
expect {
"yes/no" { send "yes\n"; exp_continue }
"password:" { send "$passwd\n"}
}
expect eof
EOF
done < ./host_passwd.txt
}
Public_Key
vim redis-hosts #redis安装服务器
[redis]
112.124.35.48 master=1
120.26.50.173 master=0
121.41.13.43 master=0
[redis:vars]
master_ip=112.124.35.48
redis_port=6379
redis_pass="Ab123456"
redis_log="/var/log/redis.log"
vim redis.yml #这个脚本相当于快捷方式的存在
---
- hosts: all
roles:
- redis
vim roles/redis/defaults/main.yml #ansible的执行会默认先寻找执行main.yml问价，并且只能同时执行五个任务
basedir: /usr/local/redis-5.0.12
redis_name: redis-5.0.12.tar.gz
redis_conf: redis.conf.j2
sentinel_conf: sentinel.conf.j2
redis_service: redis.service.j2
sentinel_service: sentinel.service.j2
vim roles/redis/tasks/main.yml #分段任务执行
---
- name: Close firewalld and forbid enabled
systemd:
name: firewalld
enabled: False
state: stopped
- name: Close SELINUX
shell: setenforce 0 || true
- name: Forbid SELINUX enabled
lineinfile:
path: /etc/selinux/config
regexp: '^SELINUX='
line: SELINUX=disabled
- name: unarchive redis.tar.gz to remote server
unarchive:
src: "{ { redis_name }}"
dest: "/usr/local"
- name: Install base packages
yum:
name: ['gcc','gcc-c++']
state: present
- name: make redis
shell: cd { { basedir }} && make MALLOC=libc
- name: configure redis.conf
template:
src: "{ { redis_conf }}"
dest: "{ { basedir }}/redis.conf"
backup: True
- name: configure sentinel.conf
template:
src: "{ { sentinel_conf }}"
dest: "{ { basedir }}/sentinel.conf"
backup: True
- name: configure redis.service
template:
src: "{ { redis_service }}"
dest: /usr/lib/systemd/system/redis.service
backup: True
- name: configure sentinel.service
template:
src: "{ { sentinel_service }}"
dest: /usr/lib/systemd/system/sentinel.service
backup: True
- name: enable && start redis.service
systemd:
daemon_reload: yes
name: redis
state: started
enabled: yes
- name: enable && start redis.sentinel
systemd:
daemon_reload: yes
name: sentinel
state: started
enabled: yes
三、模块文价调用内容
vim roles/redis/templates/redis.conf.j2 # redis配置文件内容
bind 0.0.0.0
protected-mode no
port { { redis_port }}
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
supervised no
pidfile /var/run/redis_6379.pid
loglevel notice
logfile "{ { redis_log }}"
databases 16
always-show-logo yes
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir ./
masterauth { { redis_pass }}
replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
requirepass "{ { redis_pass }}"
appendfilename "appendonly.aof"
{% if master!=1 %}
slaveof { { master_ip }} { { redis_port }}
{% endif %}
vim roles/redis/templates/redis.service.j2
[Unit]
Description=Redis
After=network.target
[Service]
Type=forking
PIDFile=/var/run/redis_6379.pid
ExecStart=/usr/local/redis-5.0.12/src/redis-server /usr/local/redis-5.0.12/redis.conf
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/usr/local/redis-5.0.12/src/redis-cli -p 6379 shutdown
PrivateTmp=true
[Install]
WantedBy=multi-user.target
vim roles/redis/templates/sentinel.conf.j2
bind 0.0.0.0
protected-mode no
port 26379
daemonize yes
pidfile /var/run/redis-sentinel.pid
logfile "./sentinel.log"
dir /tmp
sentinel monitor mymaster { { master_ip }} { { redis_port }} 2
sentinel auth-pass mymaster { { redis_pass }}
sentinel down-after-milliseconds mymaster 10000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 60000
sentinel deny-scripts-reconfig yes
vim roles/redis/templates/sentinel.service.j2
[Unit]
Description=Redis
After=network.target
[Service]
Type=forking
PIDFile=/var/run/redis-sentinel.pid
ExecStart=/usr/local/redis-5.0.12/src/redis-sentinel /usr/local/redis-5.0.12/sentinel.conf
ExecStop=/usr/local/redis-5.0.12/src/redis-cli -p 26379 shutdown
ExecReload=/bin/kill -s HUP $MAINPID
#ExecStop=/bin/kill -s QUIT $MAINPID
PrivateTmp=true
[Install]
WantedBy=multi-user.target
最后执行ansible-playbook redis.yml
