CentOS6.5_x86_64 redis redis redis. Redis redis. redis slave server master server. redis. redis. redis. redis redis. replication.

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1 Redis. redis CentOS._x_ redis redis-..0 redis Redis BSD. redis redis slave server master server redis redis master slave redis redis replication.md. redis.. redis redis src]# tar -zxvf redis-..0.tar.gz src]# cd redis-..0

2 redis-..0]# make redis-..0]# make install PREFIX=/data/redis. redis.. 0 [root@chmod redis-..0]# mkdir /data/redis/etc/ [root@chmod redis-..0]# cp redis.conf /data/redis/etc/ [root@chmod redis-..0]# cp utils/redis_init_script /etc/init.d/redis [root@chmod redis-..0]# vim /etc/init.d/redis # # chkconfig: 0 0 # description: Redis is a persistent key-value database # chkconfig EXEC=/data/redis/bin/redis-server CLIEXEC=/data/redis/bin/redis-cli 0 PIDFILE=/data/redis/redis_${REDISPORT}.pid CONF="/data/redis/etc/redis.conf" $CLIEXEC -h..0. -p $REDISPORT -a shutdown # ip [root@chmod redis-..0]# chmod +x /etc/init.d/redis [root@chmod redis-..0]# chkconfig redis on # redis.conf 0 [root@chmod src]# grep -v "#" /data/redis/etc/redis.conf bind..0. # ip protected-mode yes port # tcp-backlog timeout 0 tcp-keepalive 0 daemonize yes supervised no # redis

3 pidfile /data/redis/redis_.pid # pid loglevel notice logfile "/data/redis/log/redis.log" # databases save 00 save 00 0 save # 00 key-value 00s 0 key-value 0s 0000 key-value # key-value stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename dump.rdb dir /data/redis/ # slave-serve-stale-data yes slave-read-only yes repl-diskless-sync no repl-diskless-sync-delay repl-disable-tcp-nodelay no slave-priority 00 requirepass # maxmemory M # redis 0%~0% re dis appendonly no appendfilename "appendonly.aof" appendfsync everysec no-appendfsync-on-rewrite no auto-aof-rewrite-percentage 00 auto-aof-rewrite-min-size mb aof-load-truncated yes lua-time-limit 000 slowlog-log-slower-than 0000 slowlog-max-len latency-monitor-threshold 0 notify-keyspace-events "" hash-max-ziplist-entries hash-max-ziplist-value

4 0 list-max-ziplist-size - list-compress-depth 0 set-max-intset-entries zset-max-ziplist-entries zset-max-ziplist-value hll-sparse-max-bytes 000 activerehashing yes client-output-buffer-limit normal client-output-buffer-limit slave mb mb 0 client-output-buffer-limit pubsub mb mb 0 hz 0 aof-rewrite-incremental-fsync yes.. 0 [root@chmod redis-..0]# mkdir /data/redis/etc/ [root@chmod redis-..0]# cp redis.conf /data/redis/etc/ [root@chmod redis-..0]# cp utils/redis_init_script /etc/init.d/redis [root@chmod redis-..0]# vim /etc/init.d/redis # # chkconfig: 0 0 # description: Redis is a persistent key-value databas EXEC=/data/redis/bin/redis-server CLIEXEC=/data/redis/bin/redis-cli 0 PIDFILE=/data/redis/redis_${REDISPORT}.pid CONF="/data/redis/etc/redis.conf" $CLIEXEC -h..0. -p $REDISPORT -a shutdown # ip [root@chmod redis-..0]# chmod /etc/init.d/redis [root@chmod redis-..0]# chkconfig redis on redis.conf [root@chmod ~]# grep -v "#" /data/redis/etc/redis.conf bind..0. # ip protected-mode yes port tcp-backlog timeout 0

5 tcp-keepalive 0 daemonize yes # redis supervised no pidfile /data/redis/redis_.pid # pid loglevel notice logfile "/data/redis/log/redis.log" # databases save 00 save 00 0 save stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename dump.rdb dir /data/redis/ # slaveof..0. # redis ip masterauth # redis slave-serve-stale-data yes slave-read-only yes repl-diskless-sync no repl-diskless-sync-delay repl-disable-tcp-nodelay no slave-priority 00 requirepass # redis maxmemory M # redis appendonly no appendfilename "appendonly.aof" appendfsync everysec no-appendfsync-on-rewrite no auto-aof-rewrite-percentage 00 auto-aof-rewrite-min-size mb aof-load-truncated yes lua-time-limit 000 slowlog-log-slower-than 0000 slowlog-max-len latency-monitor-threshold 0 notify-keyspace-events ""

6 0 hash-max-ziplist-entries hash-max-ziplist-value list-max-ziplist-size - list-compress-depth 0 set-max-intset-entries zset-max-ziplist-entries zset-max-ziplist-value hll-sparse-max-bytes 000 activerehashing yes client-output-buffer-limit normal client-output-buffer-limit slave mb mb 0 client-output-buffer-limit pubsub mb mb 0 hz 0 aof-rewrite-incremental-fsync yes. redis.. [root@chmod log]# service redis start # chkconfig Starting Redis server... [root@chmod log]# ps -ef grep redis root 0 :0? 00:00:00 /data/redis/bin/redis-se rver..0.: root 0 0 : pts/ 00:00:00 grep redis.. 0 [root@chmod log]# service redis start Starting Redis server... [root@chmod log]# ps -ef grep redis root 0 0 :? 00:00:00 /data/redis/bin/redis-se rver..0.: root 0 0 : pts/0 00:00:00 grep redis [root@chmod log]# tail redis.log 0:S 0 Aug ::. * Connecting to MASTER..0.: 0:S 0 Aug ::. * MASTER <-> SLAVE sync started 0:S 0 Aug ::. * Non blocking connect for SYNC fired the eve nt. 0:S 0 Aug ::. * Master replied to PING, replication can con tinue...

7 0:S 0 Aug ::. * Partial resynchronization not possible (no cached master) 0:S 0 Aug ::. * Full resync from master: acddb fbeffdbbcd0e: 0:S 0 Aug ::. * MASTER <-> SLAVE sync: receiving bytes f rom master 0:S 0 Aug ::. * MASTER <-> SLAVE sync: Flushing old data 0:S 0 Aug ::. * MASTER <-> SLAVE sync: Loading DB in memory 0:S 0 Aug ::. * MASTER <-> SLAVE sync: Finished with succes s redis master master 0:S 0 Aug ::. * MASTER <-> SLAVE sync: receiving bytes f rom master 0:S 0 Aug ::. * MASTER <-> SLAVE sync: Flushing old data 0:S 0 Aug ::. * MASTER <-> SLAVE sync: Loading DB in memory 0:S 0 Aug ::. * MASTER <-> SLAVE sync: Finished with succes s.. 0 [root@chmod log]# redis-cli -h..0. -a info replicatio n # Replication role:master connected_slaves: slave0:ip=..0.,port=,state=online,offset=,lag= master_repl_offset: repl_backlog_active: repl_backlog_size:0 repl_backlog_first_byte_offset: repl_backlog_histlen: [root@chmod log]# redis-cli -h..0. -a info replicati on

8 0 # Replication role:slave # master_host:..0. master_port: master_link_status:up master_last_io_seconds_ago: master_sync_in_progress:0 slave_repl_offset:0 slave_priority:00 slave_read_only: # connected_slaves:0 master_repl_offset:0 repl_backlog_active:0 repl_backlog_size:0 repl_backlog_first_byte_offset:0 repl_backlog_histlen: [root@chmod log]# redis-cli -h..0. -a..0.:> set test haha OK..0.:> get test "haha"..0.:> [root@chmod log]# redis-cli -h..0. -a..0.:> get test # "haha"..0.:> set test hello # (error) READONLY You can't write against a read only slave...0.:>... replication

9 log]# redis-cli -h..0. -a info replica tion # Replication role:master connected_slaves:0 master_repl_offset:0 repl_backlog_active: repl_backlog_size:0 repl_backlog_first_byte_offset: repl_backlog_histlen:0 slave0:ip=..0.,port=,state=online,offset=,lag= 0 [root@chmod log]# tail redis.log 0:S 0 Aug ::. # Error condition on socket for SYNC: Conn ection refused 0:S 0 Aug ::. * Connecting to MASTER..0.: 0:S 0 Aug ::. * MASTER <-> SLAVE sync started 0:S 0 Aug ::. # Error condition on socket for SYNC: Conn ection refused 0:S 0 Aug ::0. * Connecting to MASTER..0.: 0:S 0 Aug ::0. * MASTER <-> SLAVE sync started 0:S 0 Aug ::0. # Error condition on socket for SYNC: Conn ection refused 0:S 0 Aug ::.0 * Connecting to MASTER..0.: 0:S 0 Aug ::.0 * MASTER <-> SLAVE sync started 0:S 0 Aug ::.0 # Error condition on socket for SYNC: Conn ection refused replication [root@chmod log]# redis-cli -h..0. -a info replic ation # Replication role:slave master_host:..0.

10 0 master_port: master_link_status:down #master down master_last_io_seconds_ago:- master_sync_in_progress:0 slave_repl_offset: master_link_down_since_seconds: # master s slave_priority:00 slave_read_only: connected_slaves:0 master_repl_offset:0 repl_backlog_active:0 repl_backlog_size:0 repl_backlog_first_byte_offset:0 repl_backlog_histlen:0 redis