master-slave replication

redis save 备份 恢复

root@ubuntu:/etc/init.d# find / -name dump.rdb |xargs ls -alt

redis-cli save

cp /var/lib/redis/dump.rdb /var/lib/redis/BEFOREdump.rdb

redis-cli flushall

./redis-server stop

cp /var/lib/redis/BEFOREdump.rdb /var/lib/redis/dump.rdb

root@ubuntu:/etc/init.d# find / -name dump.rdb |xargs ls -alt
-rw-r--r--  redis redis  May   : /var/lib/redis/dump.rdb
-rw-r--r--  root  root   May   : /etc/redis/dump.rdb
-rw-r--r--  root  root   May   : /etc/init.d/dump.rdb
-rw-rw-r--  wuser wuser  May   : /home/wuser/dump.rdb
-rw-r--r--  root  root   May   : /dump.rdb
root@ubuntu:/etc/init.d# redis-cli
127.0.0.1:> keys
(error) ERR wrong number of arguments for 'keys' command
127.0.0.1:> keys *
(empty list or set)
127.0.0.1:> set  w2
OK
127.0.0.1:> set  w2d
OK
127.0.0.1:> save
OK
127.0.0.1:> exit
root@ubuntu:/etc/init.d# find / -name dump.rdb |xargs ls -alt
-rw-r--r--  redis redis  May   : /var/lib/redis/dump.rdb
-rw-r--r--  root  root   May   : /etc/redis/dump.rdb
-rw-r--r--  root  root   May   : /etc/init.d/dump.rdb
-rw-rw-r--  wuser wuser  May   : /home/wuser/dump.rdb
-rw-r--r--  root  root   May   : /dump.rdb
root@ubuntu:/etc/init.d# cp /var/lib/redis/dump.rdb /var/lib/redis/BEFOREdump.rdb
root@ubuntu:/etc/init.d# redis-cli
127.0.0.1:> KEYS *
) "w2d"
) "w2"
127.0.0.1:> flushall
OK
127.0.0.1:> exit
root@ubuntu:/etc/init.d# find / -name dump.rdb |xargs ls -alt
-rw-r--r--  redis redis  May   : /var/lib/redis/dump.rdb
-rw-r--r--  root  root   May   : /etc/redis/dump.rdb
-rw-r--r--  root  root   May   : /etc/init.d/dump.rdb
-rw-rw-r--  wuser wuser  May   : /home/wuser/dump.rdb
-rw-r--r--  root  root   May   : /dump.rdb
root@ubuntu:/etc/init.d# redis-cli
127.0.0.1:> keys *
(empty list or set)
127.0.0.1:> exit
root@ubuntu:/etc/init.d# ./redis-server stop
[ ok ] Stopping redis-server (via systemctl): redis-server.service.
root@ubuntu:/etc/init.d# cp /var/lib/redis/BEFOREdump.rdb /var/lib/redis/dump.rdb
root@ubuntu:/etc/init.d# ./redis-server start
[ ok ] Starting redis-server (via systemctl): redis-server.service.
root@ubuntu:/etc/init.d# redis-cli
127.0.0.1:> keys *
) "w2"
) "w2d"
127.0.0.1:> exit
root@ubuntu:/etc/init.d# find / -name dump.rdb |xargs ls -alt
-rw-r--r--  redis redis  May   : /var/lib/redis/dump.rdb
-rw-r--r--  root  root   May   : /etc/redis/dump.rdb
-rw-r--r--  root  root   May   : /etc/init.d/dump.rdb
-rw-rw-r--  wuser wuser  May   : /home/wuser/dump.rdb
-rw-r--r--  root  root   May   : /dump.rdb
root@ubuntu:/etc/init.d# 

w

https://redis.io/topics/replication