redis参考资料：
https://hedon954.github.io/noteSite/backend/middleware/redis/redis_intro.html

1.MySQL主从配置(在初始化数据之前）

step1:所有主机设置mysql.conf

[mysqld]
server-id=xxx
binlog-do-db=idmesh
datadir=/data/mysql
pid-file=/data/mysql/mysql.pid

step2:在master机器上创建slave用户

mysql -uroot  -p''  -e " create user 'slavecopy'@'%' identified by 'xxxx'; "
mysql -uroot  -p''  -e " GRANT REPLICATION SLAVE ON *.* to 'slavecopy'@'%'; "
mysql -uroot  -p''  -e " FLUSH PRIVILEGES ; "

step3:记录master机器上信息

mysql -uroot  -p'' -e "show master status\G ;

binlog_name
binlog_position

step4:将上述信息作为变量放到slave机器中执行

mysql -uroot -p'' -e "CHANGE MASTER TO GET_MASTER_PUBLIC_KEY=1; "
mysql -uroot -p'' -e  "change master to master_host='$mysql_master_ip',master_user='slavecopy',master_password='xxx',master_port=3306,master_log_file='$binlog_name',master_log_pos=$binlog_position;" 
mysql -uroot -p'' -e "start slave "
mysql -uroot -p'' -e " show slave status\G  " 

step5:在master机器上载入数据，观察从机

1.Redis集群安装并设置哨兵

1.通用配置文件设置

daemonize yes
bind 0.0.0.0
requirepass $pwd
logfile $dir_log

2.设置配置文件

主节点

echo "pidfile /var/run/redis_6379.pid" >> /etc/redis/6379.conf
echo "slave-read-only yes" >> /etc/redis/6379.conf
echo "slave-priority 100">>/etc/redis/6379.conf

从节点

echo "pidfile /var/run/redis_6379.pid" >> /etc/redis/6379.conf
echo "slave-read-only yes" >> /etc/redis/6379.conf
echo "slave-priority 90">>/etc/redis/6379.conf
echo "slaveof $redis_master_ip 6379" >>/etc/redis/6379.conf
echo "masterauth $middle_password" >>/etc/redis/6379.conf

从节点备份设置

save 900 1
# 开启
appendonly yes
appendfilename "appendonly.aof"

# 重写
auto-aof-rewrite-min-size 64mb
auto-aof-rewrite-percentage 100

# 追加
appendfsync everysec

3.设置sentinel配置文件和服务

port 26379
dir "/etc/redis"
logfile "/var/log/sentinel.log"
daemonize yes
sentinel monitor mymaster 192.168.0.19 6379 2
sentinel down-after-milliseconds mymaster 10000
sentinel failover-timeout mymaster 60000
sentinel auth-pass mymaster *******

[Unit]
Description=Redis
After=network.target

[Service]
ExecStart=/usr/local/bin/redis-sentinel /etc/redis/26379.conf
ExecStop=/bin/kill -s QUIT $MAINPID
Type=forking
User=root
Group=root

[Install]
WantedBy=multi-user.target