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Redis : Replication Settings
2016/09/08 |
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Configure Redis Replication. This configuration is general Master-Slave settings.
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| [1] | Change Settings on Master Host. |
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root@dlp:~#
vi /etc/redis/redis.conf # line 69: change to own IP or 0.0.0.0 bind 0.0.0.0
# line 382: add follows if you need # min-slaves-to-write : if number of slave Hosts are online, Master Host accepts write requests # min-slaves-max-lag : decision time(sec) for online if Slave Hosts return answer within specified time
min-slaves-to-write 1
min-slaves-max-lag 10 systemctl restart redis
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| [2] | Change Settings on Slave Hosts. |
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root@node01:~#
vi /etc/redis/redis.conf # line 69: change to own IP or 0.0.0.0 bind 0.0.0.0
# line 211: add Master server's IP and port
slaveof 10.0.0.30 6379
# line 218: add connection password set on Master Host
masterauth password
# line 246: verify parameter (set Slave Hosts read-only) slave-read-only yes systemctl restart redis
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| [3] | Verify statics on Slave Hosts, then it's OK if "master_link_status:up" is shown. |
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root@node01:~# redis-cli info Replication # Replication role:slave master_host:10.0.0.30 master_port:6379 master_link_status:up master_last_io_seconds_ago:2 master_sync_in_progress:0 slave_repl_offset:99 slave_priority:100 slave_read_only:1 connected_slaves:0 master_repl_offset:0 repl_backlog_active:0 repl_backlog_size:1048576 repl_backlog_first_byte_offset:0 repl_backlog_histlen:0 # try to get a Key normally root@node01:~# redis-cli get key_on_master "value_on_master" |