安裝 GCC 编译工具 不然会有编译不过的问题
- $
- yum
- install
- -
- y
- gcc
- g
- +
- +
- gcc
- -
- c
- +
- +
- make
升级所有的包,防止出现版本过久不兼容问题
- $ yum - y update
关闭防火墙 节点之前需要开放指定端口,为了方便,生产不要禁用
centos 6.x
- $ service iptables stop#关闭命令:
centos 7.x
- $ systemctl stop firewalld.service#停止firewall
下载,解压,编译安装
- cd /opt
- $ wget http://download.redis.io/releases/redis-4.0.1.tar.gz
- $ tar xzf redis-4.0.1.tar.gz
- $ cd redis-4.0.1
- $ make
如果因为上次编译失败,有残留的文件
- $ make distclean
1.首先在 192.168.252.101机器上 /opt/redis-4.0.1目录下创建
目录
- redis-cluster
- $ mkdir / opt / redis - 4.0.1 / redis - cluster
2.在
目录下,创建名为
- redis-cluster
的目录
- 7000、7001、7002
- $ cd /opt/redis-4.0.1/redis-cluster
- $ mkdir 7000 7001 7002
3.分别修改这三个配置文件,把如下
内容粘贴进去
- redis.conf 配置
- $ vi 7000/redis.conf
- $ vi 7001/redis.conf
- $ vi 7002/redis.conf
redis.conf 配置
- port 7000
- bind 192.168.252.101
- daemonize yes
- pidfile /var/run/redis_7000.pid
- cluster-enabled yes
- cluster-config-file nodes_7000.conf
- cluster-node-timeout 10100
- appendonly yes
redis.conf 配置说明
- #端口7000,7001,7002
- port 7000
- #默认ip为127.0.0.1,需要改为其他节点机器可访问的ip,否则创建集群时无法访问对应的端口,无法创建集群
- bind 192.168.252.101
- #redis后台运行
- daemonize yes
- #pidfile文件对应7000,7001,7002
- pidfile /var/run/redis_7000.pid
- #开启集群,把注释#去掉
- cluster-enabled yes
- #集群的配置,配置文件首次启动自动生成 7000,7001,7002
- cluster-config-file nodes_7000.conf
- #请求超时,默认15秒,可自行设置
- cluster-node-timeout 10100
- #aof日志开启,有需要就开启,它会每次写操作都记录一条日志
- appendonly yes
接着在另外两台机器上
重复以上三步,只是把目录改为
- (192.168.252.102,192.168.252.103)
对应的配置文件也按照这个规则修改即可
- 7003、7004、7005、7006、7007、7008
- #第一台机器上执行 3个节点
- $ for((i=0;i<=2;i++)); do /opt/redis-4.0.1/src/redis-server /opt/redis-4.0.1/redis-cluster/700$i/redis.conf; done
- #第二台机器上执行 3个节点
- $ for((i=3;i<=5;i++)); do /opt/redis-4.0.1/src/redis-server /opt/redis-4.0.1/redis-cluster/700$i/redis.conf; done
- #第三台机器上执行 3个节点
- $ for((i=6;i<=8;i++)); do /opt/redis-4.0.1/src/redis-server /opt/redis-4.0.1/redis-cluster/700$i/redis.conf; done
检查各 Redis 各个节点启动情况
- $ ps -ef | grep redis //redis是否启动成功
- $ netstat -tnlp | grep redis //监听redis端口
- $ yum -y install ruby ruby-devel rubygems rpm-build
- $ gem install redis
注意:在任意一台上运行 不要在每台机器上都运行,一台就够了
Redis 官方提供了
这个工具,就在解压目录的 src 目录中
- redis-trib.rb
- $ /opt/redis-
- 4.0
- .1
- /src/redis-trib.rb create --replicas
- 1
- 192.168
- .252
- .101
- :
- 7000
- 192.168
- .252
- .101
- :
- 7001
- 192.168
- .252
- .101
- :
- 7002
- 192.168
- .252
- .102
- :
- 7003
- 192.168
- .252
- .102
- :
- 7004
- 192.168
- .252
- .102
- :
- 7005
- 192.168
- .252
- .103
- :
- 7006
- 192.168
- .252
- .103
- :
- 7007
- 192.168
- .252
- .103
- :
- 7008
出现以下内容
- [root@localhost redis-cluster]# /opt/redis-4.0.1/src/redis-trib.rb create --replicas 1 192.168.252.101:7000 192.168.252.101:7001 192.168.252.101:7002 192.168.252.102:7003 192.168.252.102:7004 192.168.252.102:7005 192.168.252.103:7006 192.168.252.103:7007 192.168.252.103:7008
- >>> Creating cluster
- >>> Performing hash slots allocation on 9 nodes...
- Using 4 masters:
- 192.168.252.101:7000
- 192.168.252.102:7003
- 192.168.252.103:7006
- 192.168.252.101:7001
- Adding replica 192.168.252.102:7004 to 192.168.252.101:7000
- Adding replica 192.168.252.103:7007 to 192.168.252.102:7003
- Adding replica 192.168.252.101:7002 to 192.168.252.103:7006
- Adding replica 192.168.252.102:7005 to 192.168.252.101:7001
- Adding replica 192.168.252.103:7008 to 192.168.252.101:7000
- M: 7c622ac191edd40dd61d9b79b27f6f69d02a5bbf 192.168.252.101:7000
- slots:0-4095 (4096 slots) master
- M: 44c81c15b01d992cb9ede4ad35477ec853d70723 192.168.252.101:7001
- slots:12288-16383 (4096 slots) master
- S: 38f03c27af39723e1828eb62d1775c4b6e2c3638 192.168.252.101:7002
- replicates f1abb62a8c9b448ea14db421bdfe3f1d8075189c
- M: 987965baf505a9aa43e50e46c76189c51a8f17ec 192.168.252.102:7003
- slots:4096-8191 (4096 slots) master
- S: 6555292fed9c5d52fcf5b983c441aff6f96923d5 192.168.252.102:7004
- replicates 7c622ac191edd40dd61d9b79b27f6f69d02a5bbf
- S: 2b5ba254a0405d4efde4c459867b15176f79244a 192.168.252.102:7005
- replicates 44c81c15b01d992cb9ede4ad35477ec853d70723
- M: f1abb62a8c9b448ea14db421bdfe3f1d8075189c 192.168.252.103:7006
- slots:8192-12287 (4096 slots) master
- S: eb4067373d36d8a8df07951f92794e67a6aac022 192.168.252.103:7007
- replicates 987965baf505a9aa43e50e46c76189c51a8f17ec
- S: 2919e041dd3d1daf176d6800dcd262f4e727f366 192.168.252.103:7008
- replicates 7c622ac191edd40dd61d9b79b27f6f69d02a5bbf
- Can I set the above configuration? (type 'yes' to accept): yes
输入 yes
- >>> Nodes configuration updated
- >>> Assign a different config epoch to each node
- >>> Sending CLUSTER MEET messages to join the cluster
- Waiting for the cluster to join.........
- >>> Performing Cluster Check (using node 192.168.252.101:7000)
- M: 7c622ac191edd40dd61d9b79b27f6f69d02a5bbf 192.168.252.101:7000
- slots:0-4095 (4096 slots) master
- 2 additional replica(s)
- S: 6555292fed9c5d52fcf5b983c441aff6f96923d5 192.168.252.102:7004
- slots: (0 slots) slave
- replicates 7c622ac191edd40dd61d9b79b27f6f69d02a5bbf
- M: 44c81c15b01d992cb9ede4ad35477ec853d70723 192.168.252.101:7001
- slots:12288-16383 (4096 slots) master
- 1 additional replica(s)
- S: 2919e041dd3d1daf176d6800dcd262f4e727f366 192.168.252.103:7008
- slots: (0 slots) slave
- replicates 7c622ac191edd40dd61d9b79b27f6f69d02a5bbf
- M: f1abb62a8c9b448ea14db421bdfe3f1d8075189c 192.168.252.103:7006
- slots:8192-12287 (4096 slots) master
- 1 additional replica(s)
- S: eb4067373d36d8a8df07951f92794e67a6aac022 192.168.252.103:7007
- slots: (0 slots) slave
- replicates 987965baf505a9aa43e50e46c76189c51a8f17ec
- S: 38f03c27af39723e1828eb62d1775c4b6e2c3638 192.168.252.101:7002
- slots: (0 slots) slave
- replicates f1abb62a8c9b448ea14db421bdfe3f1d8075189c
- S: 2b5ba254a0405d4efde4c459867b15176f79244a 192.168.252.102:7005
- slots: (0 slots) slave
- replicates 44c81c15b01d992cb9ede4ad35477ec853d70723
- M: 987965baf505a9aa43e50e46c76189c51a8f17ec 192.168.252.102:7003
- slots:4096-8191 (4096 slots) master
- 1 additional replica(s)
- [OK] All nodes agree about slots configuration.
- >>> Check for open slots...
- >>> Check slots coverage...
- [OK] All 16384 slots covered.
这样也可以,推荐
- $ pkill redis
循环节点逐个关闭
- $ for((i=0;i<=2;i++)); do /opt/redis-4.0.1/src/redis-cli -c -h 192.168.252.101 -p 700$i shutdown; done
- $ for((i=3;i<=5;i++)); do /opt/redis-4.0.1/src/redis-cli -c -h 192.168.252.102 -p 700$i shutdown; done
- $ for((i=6;i<=8;i++)); do /opt/redis-4.0.1/src/redis-cli -c -h 192.168.252.103 -p 700$i shutdown; done
参数 -C 可连接到集群,因为 redis.conf 将 bind 改为了ip地址,所以 -h 参数不可以省略,-p 参数为端口号
- $ /opt/redis-4.0.1/src/redis-cli -h 192.168.252.101 -c -p 7000
- 192.168.252.101:7000> set name www.ymq.io
- -> Redirected to slot [5798] located at 192.168.252.102:7003
- OK
- 192.168.252.102:7003> get name
- "www.ymq.io"
- 192.168.252.102:7003>
发现redis set name 之后重定向到192.168.252.102机器 redis 7003 这个节点
- [root@localhost redis-cluster]# /opt/redis-4.0.1/src/redis-cli -h 192.168.252.103 -c -p 7008
- 192.168.252.103:7008> get name
- -> Redirected to slot [5798] located at 192.168.252.102:7003
- "www.ymq.io"
- 192.168.252.102:7003>
发现redis get name 重定向到192.168.252.102机器 redis 7003 这个节点
如果您看到这样的现象,说明集群已经是可用的了
- $ / opt / redis - 4.0.1 / src / redis - trib.rb check 192.168.252.101 : 7000
- >>> Performing Cluster Check (using node 192.168.252.101:7000)
- M: 7c622ac191edd40dd61d9b79b27f6f69d02a5bbf 192.168.252.101:7000
- slots:0-4095 (4096 slots) master
- 2 additional replica(s)
- S: 6555292fed9c5d52fcf5b983c441aff6f96923d5 192.168.252.102:7004
- slots: (0 slots) slave
- replicates 7c622ac191edd40dd61d9b79b27f6f69d02a5bbf
- M: 44c81c15b01d992cb9ede4ad35477ec853d70723 192.168.252.101:7001
- slots:12288-16383 (4096 slots) master
- 1 additional replica(s)
- S: 2919e041dd3d1daf176d6800dcd262f4e727f366 192.168.252.103:7008
- slots: (0 slots) slave
- replicates 7c622ac191edd40dd61d9b79b27f6f69d02a5bbf
- M: f1abb62a8c9b448ea14db421bdfe3f1d8075189c 192.168.252.103:7006
- slots:8192-12287 (4096 slots) master
- 1 additional replica(s)
- S: eb4067373d36d8a8df07951f92794e67a6aac022 192.168.252.103:7007
- slots: (0 slots) slave
- replicates 987965baf505a9aa43e50e46c76189c51a8f17ec
- S: 38f03c27af39723e1828eb62d1775c4b6e2c3638 192.168.252.101:7002
- slots: (0 slots) slave
- replicates f1abb62a8c9b448ea14db421bdfe3f1d8075189c
- S: 2b5ba254a0405d4efde4c459867b15176f79244a 192.168.252.102:7005
- slots: (0 slots) slave
- replicates 44c81c15b01d992cb9ede4ad35477ec853d70723
- M: 987965baf505a9aa43e50e46c76189c51a8f17ec 192.168.252.102:7003
- slots:4096-8191 (4096 slots) master
- 1 additional replica(s)
- [OK] All nodes agree about slots configuration.
- >>> Check for open slots...
- >>> Check slots coverage...
- [OK] All 16384 slots covered.
列出集群当前已知的所有节点(node),以及这些节点的相关信息
- $ / opt / redis - 4.0.1 / src / redis - cli - h 192.168.252.101 - c - p 7000
- 192.168.252.101 : 7000 > cluster nodes
- 6555292fed9c5d52fcf5b983c441aff6f96923d5 192.168.252.102:7004@17004 slave 7c622ac191edd40dd61d9b79b27f6f69d02a5bbf 0 1502815268317 5 connected
- 44c81c15b01d992cb9ede4ad35477ec853d70723 192.168.252.101:7001@17001 master - 0 1502815268000 2 connected 12288-16383
- 2919e041dd3d1daf176d6800dcd262f4e727f366 192.168.252.103:7008@17008 slave 7c622ac191edd40dd61d9b79b27f6f69d02a5bbf 0 1502815269000 9 connected
- 7c622ac191edd40dd61d9b79b27f6f69d02a5bbf 192.168.252.101:7000@17000 myself,master - 0 1502815269000 1 connected 0-4095
- f1abb62a8c9b448ea14db421bdfe3f1d8075189c 192.168.252.103:7006@17006 master - 0 1502815269000 7 connected 8192-12287
- eb4067373d36d8a8df07951f92794e67a6aac022 192.168.252.103:7007@17007 slave 987965baf505a9aa43e50e46c76189c51a8f17ec 0 1502815267000 8 connected
- 38f03c27af39723e1828eb62d1775c4b6e2c3638 192.168.252.101:7002@17002 slave f1abb62a8c9b448ea14db421bdfe3f1d8075189c 0 1502815269327 7 connected
- 2b5ba254a0405d4efde4c459867b15176f79244a 192.168.252.102:7005@17005 slave 44c81c15b01d992cb9ede4ad35477ec853d70723 0 1502815270336 6 connected
- 987965baf505a9aa43e50e46c76189c51a8f17ec 192.168.252.102:7003@17003 master - 0 1502815271345 4 connected 4096-8191
- 192.168.252.101:7000>
- $
- 192.168
- .252
- .101
- :
- 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:9
- cluster_size:4
- cluster_current_epoch:9
- cluster_my_epoch:1
- cluster_stats_messages_ping_sent:485
- cluster_stats_messages_pong_sent:485
- cluster_stats_messages_sent:970
- cluster_stats_messages_ping_received:477
- cluster_stats_messages_pong_received:485
- cluster_stats_messages_meet_received:8
- cluster_stats_messages_received:970
- 192.168.252.101:7000>
语法格式
- redis - cli - c - p port
- cluster info :打印集群的信息
- cluster nodes :列出集群当前已知的所有节点( node),以及这些节点的相关信息。
- cluster meet <ip> <port> :将 ip 和 port 所指定的节点添加到集群当中,让它成为集群的一份子。
- cluster forget <node_id> :从集群中移除 node_id 指定的节点。
- cluster replicate <node_id> :将当前节点设置为 node_id 指定的节点的从节点。
- cluster saveconfig :将节点的配置文件保存到硬盘里面。
- cluster addslots <slot> [slot ...] :将一个或多个槽( slot)指派( assign)给当前节点。
- cluster delslots <slot> [slot ...] :移除一个或多个槽对当前节点的指派。
- cluster flushslots :移除指派给当前节点的所有槽,让当前节点变成一个没有指派任何槽的节点。
- cluster setslot <slot> node <node_id> :将槽 slot 指派给 node_id 指定的节点,如果槽已经指派给另一个节点,那么先让另一个节点删除该槽>,然后再进行指派。
- cluster setslot <slot> migrating <node_id> :将本节点的槽 slot 迁移到 node_id 指定的节点中。
- cluster setslot <slot> importing <node_id> :从 node_id 指定的节点中导入槽 slot 到本节点。
- cluster setslot <slot> stable :取消对槽 slot 的导入( import)或者迁移( migrate)。
- cluster keyslot <key> :计算键 key 应该被放置在哪个槽上。
- cluster countkeysinslot <slot> :返回槽 slot 目前包含的键值对数量。
- cluster getkeysinslot <slot> <count> :返回 count 个 slot 槽中的键 。
下面关于Redis的文章您也可能喜欢,不妨参考下:
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CentOS 7下Redis的安装与配置 http://www.linuxidc.com/Linux/2017-02/140363.htm
Ubuntu 14.04安装Redis与简单配置 http://www.linuxidc.com/Linux/2017-01/139075.htm
Ubuntu 16.04环境中安装PHP7.0 Redis扩展 http://www.linuxidc.com/Linux/2016-09/135631.htm
Redis 单机&集群离线安装部署 http://www.linuxidc.com/Linux/2017-03/141403.htm
CentOS 7.0 安装Redis 3.2.1详细过程和使用常见问题 http://www.linuxidc.com/Linux/2016-09/135071.htm
Ubuntu 16.04环境中安装PHP7.0 Redis扩展 http://www.linuxidc.com/Linux/2016-09/135631.htm
Ubuntu 15.10下Redis集群部署文档 http://www.linuxidc.com/Linux/2016-06/132340.htm
Redis实战 中文PDF http://www.linuxidc.com/Linux/2016-04/129932.htm
来源: http://www.linuxidc.com/Linux/2017-11/148517.htm