安裝redis
- 1.搜索源中的redis包 apt-cache pkgnames | grep redis
- 2.安裝redis-server apt-get install redis-server
根據端口號配置redis並開啟集群配置
- 1.復制redis配置文件 cp redis.conf nodes7000.conf
- 2.搜索cluster-enabled變量 並設置為 yes 開啟集群配置;
- 3.搜索cluster-config-file變量 並設置為 nodes-7000.conf 每個redis-cluster開啟之后，都會有一個自己的配置文件
- 4.重復上面的步驟且修改對應的端口號為7001和7002
分別開啟不同端口號的redis-server
- redis-server node7000.conf
- 查看進程是否存在
root@ubuntu:/etc/redis# ps -aux | grep redis-server
root 4886 0.1 0.8 40136 8556 ? Ssl 16:26 0:05 redis-server *:7000 [cluster]
redis-server 握手
127.0.0.1:7000> cluster meet your_IP 7001
OK
your_IP如果使用127.0.0.1的話，遠程連接會有問題，如果連接的redis沒有維護對應的key 則會返回正確的ip和端口號。如果設置為127.0.0.1的話 就會返回127.0.0.1,這樣就連接不上遠程redis-server了
cluster info命令 查看集群狀態 cluster_known_nodes:3 表示有3個節點連接到集群內了
cluster_state:fail
cluster_slots_assigned:0 分配的槽位為0
127.0.0.1:7000> cluster info
cluster_state:fail
cluster_slots_assigned:0
cluster_slots_ok:0
cluster_slots_pfail:0
cluster_slots_fail:0
cluster_known_nodes:3
cluster_size:0
cluster_current_epoch:1
cluster_my_epoch:0
cluster_stats_messages_sent:1111
cluster_stats_messages_received:1095
分配槽位
redis-cli -h your_IP -p 7000 cluster addslots {0..5461}
redis-cli -h your_IP -p 7001 cluster addslots {5462..10922}
redis-cli -h your_IP -p 7002 cluster addslots {10923..16383}
查看信息
cluster_state 為ok
cluster_slots_assigned 槽位也已經分配完成
192.168.110.134:7000> cluster info
cluster_state:ok
cluster_slots_assigned:16384
cluster_slots_ok:16384
cluster_slots_pfail:0
cluster_slots_fail:0
cluster_known_nodes:3
cluster_size:3
cluster_current_epoch:2
cluster_my_epoch:2
cluster_stats_messages_sent:2320
cluster_stats_messages_received:2171
建立從節點
slaveof Your_Master_IP Your_Slave_PORT
從節點日志如下
Connecting to MASTER IP:7000
MASTER <-> SLAVE sync started
Non blocking connect for SYNC fired the event.
Master replied to PING, replication can continue...
Partial resynchronization not possible (no cached master)
Full resync from master: b20678039dab9be4b9ceb58e3a4dc0679d720383:1
MASTER <-> SLAVE sync: receiving 33 bytes from master
MASTER <-> SLAVE sync: Flushing old data
MASTER <-> SLAVE sync: Loading DB in memory
MASTER <-> SLAVE sync: Finished with success
在Slave上查看同步節點狀態
127.0.0.1:7000> info replication
# Replication
role:slave
master_host:192.168.232.101
master_port:7000
master_link_status:up
master_last_io_seconds_ago:1
master_sync_in_progress:0
slave_repl_offset:935
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