Redis Cluster 搭建

2017-08-28 14:23:09来源:oschina作者:Hello吴勇人点击

分享
环境
#environment
OS: CentOS 7.2 64
#ip
192.168.21.137~139
目录和文件准备
#三台各自执行
mkdir /redis
wget -P /redis http://download.redis.io/releases/redis-4.0.1.tar.gz
#安装
cd redis-4.0.1
make && make install节点
#通过配置文件给每台服务器配置三个redis节点
mkdir -p /redis_cluster/6001 /redis_cluster/6002 /redis_cluster/6003
cp /redis/redis-4.0.1/redis.conf/redis_cluster/6001/
cp /redis/redis-4.0.1/redis.conf/redis_cluster/6002/
cp /redis/redis-4.0.1/redis.conf/redis_cluster/6003/
#配置
#redis后台运行
daemonizeyes #pidfile文件 6001~6003
pidfile/var/run/redis_6000.pid #6001~6003
port7000

#开启集群
cluster-enabledyes #配置文件首次启动自动生成
cluster-config-filenodes_6001.conf #请求超时
cluster-node-timeout5000#aof日志
appendonlyno
#绑定地址,需要别的机器能ping通的地址
bind 192.168.21.137
启动
redis-server/redis_cluster/6001/redis.conf
redis-server/redis_cluster/6002/redis.conf
redis-server/redis_cluster/6003/redis.conf
检查是否启动成功及信息
[root@localhost /]# ps -ef | grep redis
root1670010 23:08 ? 00:00:00 redis-server 127.0.0.1:6001
root1670510 23:08 ? 00:00:00 redis-server 127.0.0.1:6002
root1671010 23:08 ? 00:00:00 redis-server 127.0.0.1:6003
root16715120650 23:08 pts/100:00:00 grep --color=auto redis
[root@localhost /]# netstat -tnlp | grep redis
tcp 00 127.0.0.1:6001 0.0.0.0:* LISTEN16700/redis-server
tcp 00 127.0.0.1:6002 0.0.0.0:* LISTEN16705/redis-server
tcp 00 127.0.0.1:6003 0.0.0.0:* LISTEN16710/redis-server
[root@localhost /]#

至此,redis节点准备完成。


搭建集群

redis官方提供了一个 redis-trib.rb (src目录下) 工具用于搭建集群。很明显是 ruby 写的,所以需要 ruby 环境。


安装 ruby
yum -y install ruby ruby-devel rubygems rpm-build
用 gem 安装 redis 接口
[root@localhost /]# gem install redis
Fetching: redis-3.3.3.gem (100%)
Successfully installed redis-3.3.3
Parsing documentation for redis-3.3.3
Installing ri documentation for redis-3.3.3
1 gem installed

确保开放端口,可参考我的另一个微博 Linux 开放端口


运行 redis-trib.rb 查看 集群创建帮助


[root@localhost /]# /redis/redis-4.0.1/src/redis-trib.rb
Usage: redis-trib
create host1:port1 ... hostN:portN
--replicas
checkhost:port
info host:port
fixhost:port
--timeout
reshardhost:port
--from
--to
--slots
--yes
--timeout
--pipeline
rebalancehost:port
--weight
--auto-weights
--use-empty-masters
--timeout
--simulate
--pipeline
--threshold
add-node new_host:new_port existing_host:existing_port
--slave
--master-id
del-node host:port node_id
set-timeout host:port milliseconds
call host:port command arg arg .. arg
import host:port
--from
--copy
--replace
help (show this help)
For check, fix, reshard, del-node, set-timeout you can specify the host and port of any working node in the cluster.
创建集群
#其中 --replicas2 意思为为每个 master 分配 2 各 slave
[root@localhost ~]# /redis/redis-4.0.1/src/redis-trib.rbcreate--replicas2192.168.21.137:6001 192.168.21.137:6002 192.168.21.137:6003 192.168.21.138:6001 192.168.21.138:6002 192.168.21.138:6003 192.168.21.139:6001 192.168.21.139:6002 192.168.21.139:6003
>>> Creating cluster
>>> Performing hash slots allocation on 9 nodes...
Using 3 masters:
192.168.21.137:6001
192.168.21.138:6001
192.168.21.139:6001
Adding replica 192.168.21.138:6002 to 192.168.21.137:6001
Adding replica 192.168.21.139:6002 to 192.168.21.137:6001
Adding replica 192.168.21.137:6002 to 192.168.21.138:6001
Adding replica 192.168.21.137:6003 to 192.168.21.138:6001
Adding replica 192.168.21.138:6003 to 192.168.21.139:6001
Adding replica 192.168.21.139:6003 to 192.168.21.139:6001
M: 40217a88d10bb85bdd0d082df24f036435b82513 192.168.21.137:6001
slots:0-5460 (5461 slots) master
S: bc847ed99feac417a066baaa48fa0748ac409c67 192.168.21.137:6002
replicates 4a391d4987ee5f0cf342108890cf8236d56ea412
S: 840ab2d448387c801b67a958543090ce1d8ee1ba 192.168.21.137:6003
replicates 4a391d4987ee5f0cf342108890cf8236d56ea412
M: 4a391d4987ee5f0cf342108890cf8236d56ea412 192.168.21.138:6001
slots:5461-10922 (5462 slots) master
S: b977d15fbeaa3e88b830bf5b6caa22a27a2dce8f 192.168.21.138:6002
replicates 40217a88d10bb85bdd0d082df24f036435b82513
S: bd0fdf29c06fb27b2aa9eca478ec20ab9daf81da 192.168.21.138:6003
replicates c32b18ec7a947f01bde73a3c93abc31d60b060ee
M: c32b18ec7a947f01bde73a3c93abc31d60b060ee 192.168.21.139:6001
slots:10923-16383 (5461 slots) master
S: e323d818a7be4149053669552230f4a98332734c 192.168.21.139:6002
replicates 40217a88d10bb85bdd0d082df24f036435b82513
S: 3bcd9cf11589f418fe5cbc1895ac5a23b0b6714e 192.168.21.139:6003
replicates c32b18ec7a947f01bde73a3c93abc31d60b060ee
Can I set the above configuration? (type 'yes' to accept): 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 192.168.21.137:6001)
M: 40217a88d10bb85bdd0d082df24f036435b82513 192.168.21.137:6001
slots:0-5460 (5461 slots) master
2 additional replica(s)
S: bc847ed99feac417a066baaa48fa0748ac409c67 192.168.21.137:6002
slots: (0 slots) slave
replicates 4a391d4987ee5f0cf342108890cf8236d56ea412
S: 3bcd9cf11589f418fe5cbc1895ac5a23b0b6714e 192.168.21.139:6003
slots: (0 slots) slave
replicates c32b18ec7a947f01bde73a3c93abc31d60b060ee
S: bd0fdf29c06fb27b2aa9eca478ec20ab9daf81da 192.168.21.138:6003
slots: (0 slots) slave
replicates c32b18ec7a947f01bde73a3c93abc31d60b060ee
S: 840ab2d448387c801b67a958543090ce1d8ee1ba 192.168.21.137:6003
slots: (0 slots) slave
replicates 4a391d4987ee5f0cf342108890cf8236d56ea412
M: c32b18ec7a947f01bde73a3c93abc31d60b060ee 192.168.21.139:6001
slots:10923-16383 (5461 slots) master
2 additional replica(s)
S: b977d15fbeaa3e88b830bf5b6caa22a27a2dce8f 192.168.21.138:6002
slots: (0 slots) slave
replicates 40217a88d10bb85bdd0d082df24f036435b82513
M: 4a391d4987ee5f0cf342108890cf8236d56ea412 192.168.21.138:6001
slots:5461-10922 (5462 slots) master
2 additional replica(s)
S: e323d818a7be4149053669552230f4a98332734c 192.168.21.139:6002
slots: (0 slots) slave
replicates 40217a88d10bb85bdd0d082df24f036435b82513
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
测试集群
#在 192.168.21.138:6001 机器上设置一个键值对 testKey--testValue ,因为绑定了 IP ,所以 h 参数不能省略
[root@localhost ~]# redis-cli -h 192.168.21.138 -c -p 6001
192.168.21.138:6001> set testKey testValue
-> Redirected to slot [5203] located at 192.168.21.137:6001
OK
192.168.21.137:6001> get testKey
"testValue"
192.168.21.137:6001>
.
.
.
#在 192.168.21.137:6003 上获取 testKey 的值,发现自动定向到 192.168.21.137:6001,说明成功
[root@localhost ~]# redis-cli -h 192.168.21.137 -c -p 6003
192.168.21.137:6003> get testKey
-> Redirected to slot [5203] located at 192.168.21.137:6001
"testValue"
192.168.21.137:6001>
.
.
.
#在 192.168.21.139:6002 上获取 testKey 的值,发现自动定向到 192.168.21.137:6001,说明成功
[root@localhost ~]# redis-cli -h 192.168.21.139 -c -p 6002
192.168.21.139:6002> get testKey
-> Redirected to slot [5203] located at 192.168.21.137:6001
"testValue"
192.168.21.137:6001>

至此,Redis集群搭建完成。


集群操作
检查状态
[root@localhost ~]# /redis/redis-4.0.1/src/redis-trib.rb check 192.168.21.139:6002
>>> Performing Cluster Check (using node 192.168.21.139:6002)
S: e323d818a7be4149053669552230f4a98332734c 192.168.21.139:6002
slots: (0 slots) slave
replicates 40217a88d10bb85bdd0d082df24f036435b82513
S: 840ab2d448387c801b67a958543090ce1d8ee1ba 192.168.21.137:6003
slots: (0 slots) slave
replicates 4a391d4987ee5f0cf342108890cf8236d56ea412
S: bd0fdf29c06fb27b2aa9eca478ec20ab9daf81da 192.168.21.138:6003
slots: (0 slots) slave
replicates c32b18ec7a947f01bde73a3c93abc31d60b060ee
M: c32b18ec7a947f01bde73a3c93abc31d60b060ee 192.168.21.139:6001
slots:10923-16383 (5461 slots) master
2 additional replica(s)
S: b977d15fbeaa3e88b830bf5b6caa22a27a2dce8f 192.168.21.138:6002
slots: (0 slots) slave
replicates 40217a88d10bb85bdd0d082df24f036435b82513
S: bc847ed99feac417a066baaa48fa0748ac409c67 192.168.21.137:6002
slots: (0 slots) slave
replicates 4a391d4987ee5f0cf342108890cf8236d56ea412
M: 4a391d4987ee5f0cf342108890cf8236d56ea412 192.168.21.138:6001
slots:5461-10922 (5462 slots) master
2 additional replica(s)
M: 40217a88d10bb85bdd0d082df24f036435b82513 192.168.21.137:6001
slots:0-5460 (5461 slots) master
2 additional replica(s)
S: 3bcd9cf11589f418fe5cbc1895ac5a23b0b6714e 192.168.21.139:6003
slots: (0 slots) slave
replicates c32b18ec7a947f01bde73a3c93abc31d60b060ee
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
查看所有节点信息
[root@localhost ~]# redis-cli -h 192.168.21.138 -c -p 6001
192.168.21.138:6001> cluster nodes
e323d818a7be4149053669552230f4a98332734c 192.168.21.139:6002@16002 slave 40217a88d10bb85bdd0d082df24f036435b82513 0 1503628318000 8 connected
bc847ed99feac417a066baaa48fa0748ac409c67 192.168.21.137:6002@16002 slave 4a391d4987ee5f0cf342108890cf8236d56ea412 0 1503628318620 4 connected
c32b18ec7a947f01bde73a3c93abc31d60b060ee 192.168.21.139:6001@16001 master - 0 1503628317000 7 connected 10923-16383
bd0fdf29c06fb27b2aa9eca478ec20ab9daf81da 192.168.21.138:6003@16003 slave c32b18ec7a947f01bde73a3c93abc31d60b060ee 0 1503628318000 7 connected
40217a88d10bb85bdd0d082df24f036435b82513 192.168.21.137:6001@16001 master - 0 1503628318117 1 connected 0-5460
4a391d4987ee5f0cf342108890cf8236d56ea412 192.168.21.138:6001@16001 myself,master - 0 1503628317000 4 connected 5461-10922
840ab2d448387c801b67a958543090ce1d8ee1ba 192.168.21.137:6003@16003 slave 4a391d4987ee5f0cf342108890cf8236d56ea412 0 1503628318519 4 connected
3bcd9cf11589f418fe5cbc1895ac5a23b0b6714e 192.168.21.139:6003@16003 slave c32b18ec7a947f01bde73a3c93abc31d60b060ee 0 1503628317111 9 connected
b977d15fbeaa3e88b830bf5b6caa22a27a2dce8f 192.168.21.138:6002@16002 slave 40217a88d10bb85bdd0d082df24f036435b82513 0 1503628317111 5 connected
192.168.21.138:6001> 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:3
cluster_current_epoch:9
cluster_my_epoch:4
cluster_stats_messages_ping_sent:4391
cluster_stats_messages_pong_sent:4314
cluster_stats_messages_meet_sent:2
cluster_stats_messages_sent:8707
cluster_stats_messages_ping_received:4308
cluster_stats_messages_pong_received:4393
cluster_stats_messages_meet_received:6
cluster_stats_messages_received:8707
192.168.21.138:6001>
节点命令
#将 ip 和 port 所在的节点添加到集群当中
cluster meet
#从集群中移除 node_id 指定的节点。
cluster forget
#将当前结点设置为 node_id 的 slave(从节点)
cluster replicate
#保存节点配置文件
cluster saveconfig
槽命令
#将一个或多个槽( slot)指派( assign)给当前节点。
cluster addslots [slot ...]
#移除一个或多个槽对当前节点的指派。
cluster delslots [slot ...]
#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 flushslots
#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 node
#将本节点的槽 slot 迁移到 node_id 指定的节点中。
cluster setslot migrating
#从 node_id 指定的节点中导入槽 slot 到本节点。
cluster setslot importing
#取消对槽 slot 的导入( import)或者迁移( migrate)。
cluster setslot stable

#计算键 key 应该被放置在哪个槽上。
cluster keyslot
#返回槽 slot 目前包含的键值对数量。
cluster countkeysinslot
#返回 count 个 slot 槽中的键 。
cluster getkeysinslot
脚本
启动节点
#!/bin/bash
for i in 1 2 3
do
/redis/redis-4.0.1/src/redis-server /redis_cluster/600$i/redis.conf;
done启动集群
#!/bin/bash
/redis/redis-4.0.1/src/redis-trib.rbcreate--replicas2192.168.21.137:6001 192.168.21.137:6002 192.168.21.137:6003 192.168.21.138:6001 192.168.21.138:6002 192.168.21.138:6003 192.168.21.139:6001 192.168.21.139:6002 192.168.21.139:6003关闭
#!/bin/bash
for i in 137 138 139
do
for j in 1 2 3
do
/redis/redis-4.0.1/src/redis-cli -c -h 192.168.21.$i -p 600$j shutdown;
done
done

最新文章

123

最新摄影

微信扫一扫

第七城市微信公众平台