ubuntu 搭建redis集群三节点

一、安装redis

1、安装gcc环境

安装 gcc-c++

2、下载源码包并解压

wget http://download.redis.io/releases/redis-3.2.4.tar.gz
tar -zxvf redis-3.2.4.tar.gz
cd redis-3.2.4

3、安装ruby2.4.1并编译（一定要安装大于2.2.2的ruby，要不然redis在make的时候会报错）

wget http://ftp.ruby-lang.org/pub/ruby/2.4/ruby-2.4.1.tar.gz
tar -zxvf ruby-2.4.1.tar.gz
cd ruby-2.4.1
mkdir -p /usr/local/ruby
./configure --prefix=/usr/local/ruby
make && make install
ln -s /usr/local/ruby/bin/ruby /usr/bin/ruby

4.安装

make
make install PREFIX=/usr/local/redis
cp redis.conf /usr/local/redis/bin/redis.conf
chmod /usr/local/redis/bin/redis.conf
（也可以直接在解压包进行操作不建议）

5.启动redis

./redis-server redis.conf

6、验证

[root@host-172-16-80-177 bin]# ./redis-cli -p 6379
127.0.0.1:6379> get
(error) ERR wrong number of arguments for 'get' command
127.0.0.1:6379> set aa hzb
OK
127.0.0.1:6379> get aa
"hzb"

二、搭建redis集群（集群模式此处安装的属于三主节点无备用节点）

1、需要几个节点配置几分配置文件

daemonize yes 
Port 7001
logfile "./redis-7001.log"
protected-mode no
pidfile /var/run/redis_7001.pid
cluster-enabled yes
2.将redis-trib.rb复到制redis目录里面
3.安装gem
sudo apt-get install rubygems
4.安装ruby的redis包
gem install redis

[root@host-172-16-80-177 include]# gem install redis
Fetching: redis-4.0.1.gem (100%)
Successfully installed redis-4.0.1
Parsing documentation for redis-4.0.1
Installing ri documentation for redis-4.0.1
Done installing documentation for redis after 1 seconds
1 gem installed

5.分别启动redis1 reids2 reids3 .........

./redis-server redis-7001.conf

ps -ef|grep redis


6.用redis-trib.rb构建集群

cd /usr/local/redis-cluster/

[root@host-172-16-80-177 redis-cluster]# ./redis-trib.rb create --replicas 1 172.16.80.177:7001 172.16.80.177:7002 172.16.80.177:7003 172.16.80.177:7004 172.16.80.177:7005 172.16.80.177:7006
>>> Creating cluster
[ERR] Sorry, can't connect to node 172.16.80.177:7001

以上错误原因是redis.conf里面未开起远程访问

打开每个redis里面的.conf文件，找到
# JUST COMMENT THE FOLLOWING LINE.
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bind 127.0.0.1

# Protected mode is a layer of security protection, in order to avoid that
# Redis instances left open on the internet are accessed and exploited.

将上面的bind 127.0.0.1改成bind 172.16.80.177(外部可以访问的ip)，然后重启各服务

再用redis-trib.rb创建集群：

./redis-trib.rb create --replicas 1 172.16.80.177:7001 172.16.80.177:7002 172.16.80.177:7003 172.16.80.177:7004 172.16.80.177:7005 172.16.80.177:7006
redis 集权必须最少六个节点 如果配置三节点 去掉 --replica

./redis-trib.rb create 192.168.28.223:5551 192.168.28.223:6661 192.168.28.223:7771

[root@host-172-16-80-177 redis-cluster]# ./redis-trib.rb create --replicas 1 172.16.80.177:7001 172.16.80.177:7002 172.16.80.177:7003 172.16.80.177:7004 172.16.80.177:7005 172.16.80.177:7006
>>> Creating cluster
>>> Performing hash slots allocation on 6 nodes...
Using 3 masters:
172.16.80.177:7001
172.16.80.177:7002
172.16.80.177:7003
Adding replica 172.16.80.177:7004 to 172.16.80.177:7001
Adding replica 172.16.80.177:7005 to 172.16.80.177:7002
Adding replica 172.16.80.177:7006 to 172.16.80.177:7003
M: 40bbe8a979fe39f1f0941cc8e118443436fc71d8 172.16.80.177:7001
   slots:0-5460 (5461 slots) master
M: e6b76ee1540c9be6c44abc3dec42378f8cfd0191 172.16.80.177:7002
   slots:5461-10922 (5462 slots) master
M: fdc248e24bd9f8690c652213a5781f4e567208e8 172.16.80.177:7003
   slots:10923-16383 (5461 slots) master
S: 38faede9dd348983b1b8b80edc975e8d34105e5c 172.16.80.177:7004
   replicates 40bbe8a979fe39f1f0941cc8e118443436fc71d8
S: 38faede9dd348983b1b8b80edc975e8d34105e5c 172.16.80.177:7005
   replicates e6b76ee1540c9be6c44abc3dec42378f8cfd0191
S: 38faede9dd348983b1b8b80edc975e8d34105e5c 172.16.80.177:7006
   replicates fdc248e24bd9f8690c652213a5781f4e567208e8
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 172.16.80.177:7001)
M: 40bbe8a979fe39f1f0941cc8e118443436fc71d8 172.16.80.177:7001
   slots:0-5460 (5461 slots) master
additional replica(s)
M: e6b76ee1540c9be6c44abc3dec42378f8cfd0191 172.16.80.177:7002
   slots:5461-10922 (5462 slots) master
additional replica(s)
S: 38faede9dd348983b1b8b80edc975e8d34105e5c 172.16.80.177:7004
   slots: (0 slots) slave
   replicates 40bbe8a979fe39f1f0941cc8e118443436fc71d8
M: fdc248e24bd9f8690c652213a5781f4e567208e8 172.16.80.177:7003
   slots:10923-16383 (5461 slots) master
additional replica(s)
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.

至此，redis集群创建成功

验证集群是否成功

[root@host-172-16-80-177 redis2]# ./redis-cli -h 172.16.80.177 -c -p 7002
172.16.80.177:7002> set hello helloword
-> Redirected to slot [866] located at 172.16.80.177:7001
OK




172.16.80.177:7006> get hello
-> Redirected to slot [866] located at 172.16.80.177:7001
"helloword"

搭建redis集群遇到的问题收集

一、集群搭建主要配置如下：

P61 bind 127.0.0.1//默认ip为127.0.0.1改为其他节点机器可访问的ip 注释掉bind;可以监听连接当前服务的所有-h 后的ip;例如;绑定了 127.0.0.1,但是登录时使用-h 10.9.17.153 P80 protected-mode no //yes修改为no P84 port 8000 //端口8000-8005 P128 daemonize yes //后台运行 P150 pidfile /var/run/redis_8000.pid P163 logfile 8000/redis.log P237 dump dump8000.rdb P593 appendonly yes P597 appendfilename “appendonly.aof” P721 cluster-enabled yes P729 cluster-config-file nodes_8000.conf P735 cluster-node-timeout 15000 //请求超时默认15秒，可自行设置

二、搭建完成后依次启动各个实例

redis-server 8000/redis.conf redis-server 8001/redis.conf redis-server 8002/redis.conf redis-server 8003/redis.conf redis-server 8004/redis.conf redis-server 8005/redis.conf

三、检查启动结果：

[root@cenos01 redis-3.2.11]# ps -ef|grep 800 root 19360 1 0 23:19 ? 00:00:01 redis-server *:8001 [cluster] root 19364 1 0 23:19 ? 00:00:01 redis-server *:8002 [cluster] root 19368 1 0 23:19 ? 00:00:01 redis-server *:8003 [cluster] root 19372 1 0 23:19 ? 00:00:01 redis-server *:8004 [cluster] root 19378 1 0 23:19 ? 00:00:01 redis-server *:8005 [cluster] root 19433 1 0 23:30 ? 00:00:01 redis-server *:8000 [cluster]

四、以上启动后并不是一个真正的集群，以下开始创建集群

在redis的根目录下的src目录下执行***/redis-3.2.11/src，报错信息如下 [root@cenos01 src]# ./redis-trib.rb create 10.211.55.5:8000 10.211.55.5:8001 10.211.55.5:8002

Creating cluster Performing hash slots allocation on 3 nodes… Using 3 masters: 10.211.55.5:8000 10.211.55.5:8001 10.211.55.5:8002 M: 8ce851252f32fcab268e77d3b3ed976d57d2f498 10.211.55.5:8000 slots:0-5460 (5461 slots) master M: 6f4a31fc322725fc4ed453a588f344fed4f261bf 10.211.55.5:8001 slots:5461-10922 (5462 slots) master M: da7d09090520a0e6287ea12fe7f48225d6665f68 10.211.55.5:8002 slots:10923-16383 (5461 slots) master Can I set the above configuration? (type ‘yes’ to accept): yes /usr/local/lib/ruby/gems/2.3.0/gems/redis-4.0.2/lib/redis/client.rb:119:in call': ERR Slot 1180 is already busy (Redis::CommandError) from /usr/local/lib/ruby/gems/2.3.0/gems/redis-4.0.2/lib/redis.rb:2854:inblock in method_missing’ from /usr/local/lib/ruby/gems/2.3.0/gems/redis-4.0.2/lib/redis.rb:45:in block in synchronize' from /usr/local/lib/ruby/2.3.0/monitor.rb:214:inmon_synchronize’ from /usr/local/lib/ruby/gems/2.3.0/gems/redis-4.0.2/lib/redis.rb:45:in synchronize' from /usr/local/lib/ruby/gems/2.3.0/gems/redis-4.0.2/lib/redis.rb:2853:inmethod_missing’ from ./redis-trib.rb:212:in flush_node_config' from ./redis-trib.rb:776:inblock in flush_nodes_config’ from ./redis-trib.rb:775:in each' from ./redis-trib.rb:775:inflush_nodes_config’ from ./redis-trib.rb:1296:in create_cluster_cmd' from ./redis-trib.rb:1701:in’

五、针对以上问题的解决方法：

所有redis服务器都执行以下命令：

$redis-cli -p 端口号 $flushall $cluster reset soft $exit

六、解决后再次创建，就成功了

[root@cenos01 src]# ./redis-trib.rb create 10.211.55.5:8000 10.211.55.5:8001 10.211.55.5:8002

Creating cluster Performing hash slots allocation on 3 nodes… Using 3 masters: 10.211.55.5:8000 10.211.55.5:8001 10.211.55.5:8002 M: 8ce851252f32fcab268e77d3b3ed976d57d2f498 10.211.55.5:8000 slots:0-5460 (5461 slots) master M: 6f4a31fc322725fc4ed453a588f344fed4f261bf 10.211.55.5:8001 slots:5461-10922 (5462 slots) master M: da7d09090520a0e6287ea12fe7f48225d6665f68 10.211.55.5:8002 slots:10923-16383 (5461 slots) master 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 10.211.55.5:8000) M: 8ce851252f32fcab268e77d3b3ed976d57d2f498 10.211.55.5:8000 slots:0-5460 (5461 slots) master 0 additional replica(s) M: 6f4a31fc322725fc4ed453a588f344fed4f261bf 10.211.55.5:8001 slots:5461-10922 (5462 slots) master 0 additional replica(s) M: da7d09090520a0e6287ea12fe7f48225d6665f68 10.211.55.5:8002 slots:10923-16383 (5461 slots) master 0 additional replica(s) [OK] All nodes agree about slots configuration.

Check for open slots… Check slots coverage… [OK] All 16384 slots covered.

七、查看集群状态

** [root@cenos01 src]# redis-cli -c -p 8000 127.0.0.1:8000> 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:3 cluster_my_epoch:1 cluster_stats_messages_sent:2059 cluster_stats_messages_received:2059

cluster_current_epoch:6 代表当前集群的最新逻辑计算时间，数字越大，表示操作或者配置越新，整个集群的这个值是保持一致的 cluster_my_epoch:1代表当前节点的逻辑计算时间

八、查看槽道分配情况和集群节点信息

127.0.0.1:8000> cluster nodes 8ce851252f32fcab268e77d3b3ed976d57d2f498 10.211.55.5:8000 myself,master - 0 0 1 connected 0-5460 6f4a31fc322725fc4ed453a588f344fed4f261bf 10.211.55.5:8001 master - 0 1538582282356 2 connected 5461-10922 da7d09090520a0e6287ea12fe7f48225d6665f68 10.211.55.5:8002 master - 0 1538582283359 3 connected 10923-16383

感谢参考链接 https://www.cnblogs.com/boshen-hzb/p/7699783.html 
　　　　http://www.itbox.info/article/70623.html

posted @ 2018-11-09 14:54 你站在冰箱上干嘛！阅读(235) 评论(0) 编辑收藏举报

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