ansible-playbook 安装redis 主从
手动在测试机上安装一遍redis，最好使用utils下面的install_server.sh安装服务，然后将redis的配置文件和init需要的执行文件 拷贝备用
配置hosts：
[root@ansible ansible]#grep -v '^#' ./hosts |grep -v '^$'
[redis:children]
redis_master
redis_slave
[redis_master] #命名规则使用下划线，不然后面的调用有问题
192.168.3.12
[redis_slave]
192.168.3.13
192.168.3.14
建立redis角色的文件夹：
[root@ansible redis]#mkdir /etc/ansible/roles/redis/{files,templates,tasks,handlers,vars,default,meta} -pv
roles/redis/
├── default
├── files
│ └── redis-4.0.8.tar.gz
├── handlers
├── meta
├── tasks
│ └── main.yml
├── templates
│ ├── redis.j2
│ └── redis.conf.j2
└── vars
[root@ansible redis]# cat tasks/main.yml
- name: yum gcc
yum: name=gcc state=present
- name: copy redis
copy: src=redis-4.0.8.tar.gz dest=/usr/local/src/
- name: tar redis
shell: chdir=/usr/local/src/ tar -zxf redis-4.0.8.tar.gz
- name: install redis
shell: chdir=/usr/local/src/redis-4.0.8 make PREFIX=/usr/local/redis install
- name: mkdir /usr/local/redis/conf/
file: path=/usr/local/redis/conf state=directory
- name: copy redis_{{ port|default(6397) }}.conf
template: src=redis.conf.j2 dest=/usr/local/redis/conf/redis_{{ port|default(6397) }}.conf
- name: copy /etc/init.d/redis_{{ port|default(6397) }}
template: src=redis.j2 dest=/etc/init.d/redis_{{ port|default(6397) }} mode=755
- name: mkdir /var/lib/redis/{{ port|default(6397) }}
file: path=/var/lib/redis/{{ port|default(6397) }} state=directory
- name: chkconfig redis_{{ port|default(6397) }}
shell: chkconfig --add redis_{{ port|default(6397) }}
- name: systemctl enable redis_{{ port|default(6397) }}
shell: systemctl enable redis_{{ port|default(6397) }}
- name: open firewalld {{ port|default(6397) }}
shell: firewall-cmd --zone=public --add-port={{ port|default(6397) }}/tcp --permanent
- name: restart firewalld
service: name=firewalld state=restarted
- name: start redis_{{ port|default(6397) }}
service: name=redis_{{ port|default(6397) }} state=started
[root@ansible redis]#cat templates/redis.j2 #文件来源于make install之后用redis文件下面的utils下面的install_server.sh安装服务后的拷贝 主要是端口用{{ port|default(6397) }}这个代替
#!/bin/sh
#Configurations injected by install_server below....
EXEC=/usr/local/redis/bin/redis-server
CLIEXEC=/usr/local/redis/bin/redis-cli
PIDFILE=/var/run/redis_{{ port|default(6397) }}.pid
CONF="/usr/local/redis/conf/redis_{{ port|default(6397) }}.conf"
REDISPORT="{{ port|default(6397) }}"
###############
# SysV Init Information
# chkconfig: - 58 74
# description: redis_{{ port|default(6397) }} is the redis daemon.
### BEGIN INIT INFO
# Provides: redis_{{ port|default(6397) }}
# Required-Start: $network $local_fs $remote_fs
# Required-Stop: $network $local_fs $remote_fs
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Should-Start: $syslog $named
# Should-Stop: $syslog $named
# Short-Description: start and stop redis_{{ port|default(6397) }}
# Description: Redis daemon
### END INIT INFO
case "$1" in
start)
if [ -f $PIDFILE ]
then
echo "$PIDFILE exists, process is already running or crashed"
else
echo "Starting Redis server..."
$EXEC $CONF
fi
;;
stop)
if [ ! -f $PIDFILE ]
then
echo "$PIDFILE does not exist, process is not running"
else
PID=$(cat $PIDFILE)
echo "Stopping ..."
$CLIEXEC -p $REDISPORT shutdown
while [ -x /proc/${PID} ]
do
echo "Waiting for Redis to shutdown ..."
sleep 1
done
echo "Redis stopped"
fi
;;
status)
PID=$(cat $PIDFILE)
if [ ! -x /proc/${PID} ]
then
echo 'Redis is not running'
else
echo "Redis is running ($PID)"
fi
;;
restart)
$0 stop
$0 start
;;
*)
echo "Please use start, stop, restart or status as first argument"
;;
esac
[root@ansible redis]#grep -v '^#' templates/redis.conf.j2 |grep -v '^$' #文件来源于make install之后用redis文件下面的utils下面的install_server.sh安装服务后的拷贝 主要是端口用{{ port|default(6397) }}这个代替
bind 127.0.0.1 {{ inventory_hostname }}
protected-mode yes
port {{ port|default(6397) }}
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
supervised no
pidfile /var/run/redis_{{ port|default(6397) }}.pid
loglevel notice
logfile /var/log/redis_{{ port|default(6397) }}.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 /var/lib/redis/{{ port|default(6397) }}
{% if inventory_hostname in groups.redis_slave %}
slaveof {{ groups.redis_master[0] }} {{ port|default(6397) }}
{% endif %}
slave-serve-stale-data yes
slave-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
slave-priority 100
lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
slave-lazy-flush no
appendonly no
appendfilename "appendonly.aof"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
aof-use-rdb-preamble no
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
latency-monitor-threshold 0
notify-keyspace-events ""
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit slave 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
aof-rewrite-incremental-fsync yes
配置安装yml：
[root@ansible ansible]# cat redis.yml
- hosts: redis
remote_user: root
roles:
- redis
[root@ansible ansible]# ansible-playbook --check redis.yml -e port=7000 # -e port=7000 不是必须的
[root@ansible ansible]# ansible-playbook redis.yml -e port=7000 # -e port=7000 不是必须的
[root@ansible ansible]# ansible-playbook redis.yml -e port=7001 --start-at-task="copy redis_{{ port|default(6397) }}.conf" #安装多个redis的时候可以从这个task开始
对于 sentinel 可以安装在redis服务器，也可以安装到单独的服务器上。