redis 4.0.9 cluster 单台
安装redis
yum install -y wget gcc
wget http://download.redis.io/releases/redis-4.0.9.tar.gz
tar xzf redis-4.0.9.tar.gz
cd redis-4.0.9
#编译
make install
单台cluster
1 修改配置
新建6001 ，6002 ，6003，6004，6005 ，6006 6个文件
1） 复制 cp redis.conf /home/redis/6001
redis.conf 修改 redis-6001.conf
vi redis-6001.conf 如下：
port 6001
cluster-enabled yes
cluster-config-file "nodes-6001.conf"
cluster-node-timeout 5000
dir "/home/redis/6001"
bind 172.31.71.128
pidfile "/home/redis/6001/6001_pid.pid"
daemonize yes
# Generated by CONFIG REWRITE
masterauth "test1234"
requirepass "test1234"
notify-keyspace-events "gxE"
2）复制 cp redis.conf /home/redis/6002
redis.conf 修改 redis-6002.conf
vi redis-6002.conf 如下：
port 6002
cluster-enabled yes
cluster-config-file "nodes-6002.conf"
cluster-node-timeout 5000
dir "/home/redis/6001"
bind 172.31.71.128
pidfile "/home/redis/6001/6001_pid.pid"
daemonize yes
# Generated by CONFIG REWRITE
masterauth "test1234"
requirepass "test1234"
notify-keyspace-events "gxE"
2 启动
1） ./src/redis-server /home/redis/6001/redis-6001.conf
2） ./src/redis-server /home/redis/6002/redis-6002.conf
3） ./src/redis-server /home/redis/6003/redis-6003.conf
4） ./src/redis-server /home/redis/6004/redis-6004.conf
5） ./src/redis-server /home/redis/6005/redis-6005.conf
6） ./src/redis-server /home/redis/6006/redis-6006.conf
用：ps -ef|grep redis 查看是否起动成功
[root@localhost redis-4.0.9]# ps -ef|grep redis
root 2234 1828 0 04:49 pts/0 00:00:00 vi redis-6002.conf
root 2273 1 0 04:54 ? 00:00:00 ./src/redis-server 172.31.71.128:6001 [cluster]
root 2278 1 0 04:54 ? 00:00:00 ./src/redis-server 172.31.71.128:6002 [cluster]
root 2284 1 0 04:54 ? 00:00:00 ./src/redis-server 172.31.71.128:6003 [cluster]
root 2289 1 0 04:55 ? 00:00:00 ./src/redis-server 172.31.71.128:6004 [cluster]
root 2294 1 0 04:55 ? 00:00:00 ./src/redis-server 172.31.71.128:6005 [cluster]
root 2299 1 0 04:55 ? 00:00:00 ./src/redis-server 172.31.71.128:6006 [cluster]
root 2331 1828 0 05:12 pts/0 00:00:00 grep --color=auto redis
3 集群起动（单机版）
3.1安装ruby
#yum install ruby -y
#再安装redis插件
#gem install redis
wget https://github.com/postmodern/ruby-install/archive/v0.8.1.tar.gz
tar xzvf v0.8.1.tar.gz
cd ruby-install-0.8.1/bin/
#看下ruby的最新版本列表
./ruby-install --latest
#安装
./ruby-install ruby 2.7.8
会输出Successfully installed ruby 2.7.8 into /opt/rubies/ruby-2.78
ln -s /opt/rubies/ruby-2.7.8/bin/ruby /usr/bin/ruby
ln -s /opt/rubies/ruby-2.7.8/bin/gem /usr/bin/gem
gem sources --add https://gems.ruby-china.com/ --remove https://rubygems.org/
#再安装redis插件
gem install redis
3.2 起动 redis集群
至少6个
>>> Creating cluster
*** ERROR: Invalid configuration for cluster creation.
*** Redis Cluster requires at least 3 master nodes.
*** This is not possible with 2 nodes and 1 replicas per node.
*** At least 6 nodes are required.
正确命令：
./src/redis-trib.rb create --replicas 1 172.31.71.128:6001 172.31.71.128:6002 172.31.71.128:6003 172.31.71.128:6004 172.31.71.128:6005 172.31.71.128:6006
返回如下则表示成功：
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
3.3常见出错1 ：
Traceback (most recent call last):
2: from ./src/redis-trib.rb:25:in `
1: from /opt/rubies/ruby-2.7.8/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:83:in `require'
/opt/rubies/ruby-2.7.8/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:83:in `require': cannot load such file -- redis (LoadError)
需要安装 相对应版本
下载
wget https://cache.ruby-lang.org/pub/ruby/ruby-2.5.0.tar.gz
tar xf ruby-2.5.0.tar.gz
进入ruby目录
cd ruby-2.5.0
./configure 2 make && make install
3.4 常见出错2 ：
gem install redis
[root@localhost redis-4.0.9]# gem install redis
ERROR: SSL verification error at depth 3: certificate has expired (10)
ERROR: Certificate /O=Digital Signature Trust Co./CN=DST Root CA X3 expired at 2021-09-30T14:01:15Z
ERROR: While executing gem ... (Gem::RemoteFetcher::FetchError)
SSL_connect returned=1 errno=0 state=error: certificate verify failed (certificate has expired) (https://index.ruby-china.com/quick/Marshal.4.8/redis-5.0.6.gemspec.rz)
~ 下载
wget wget https://rubygems.org/downloads/redis-4.2.3.gem
安装指定的redis模块
gem install -l /apps/redis-4.2.3.gem
4 访问redis集群
redis-cli -h 172.31.71.128 -p 6001 -a 123456 -c
5集群节点查看
## 登录集群后
cluster nodes
[root@localhost redis-4.0.9]# redis-cli -h 172.31.71.128 -p 6001 -a 123456 -c
172.31.71.128:6001> cluster nodes
2110c7f67c001fac71691dd64cec4051b93cadfa 172.31.71.128:6005@16005 slave c4824984fafba7dda4c55975f7f8745234a6968e 0 1686560943122 5 connected
26555850fc80419c44d96a4c0e58b20d0af8bbf2 172.31.71.128:6003@16003 master - 0 1686560942119 3 connected 10923-16383
0e1d949ce8785f798ba0e17c2aa2155a6d99df8e 172.31.71.128:6006@16006 slave 26555850fc80419c44d96a4c0e58b20d0af8bbf2 0 1686560942519 6 connected
3389a66d84d6462b4dbf5cc228c3a060465773b3 172.31.71.128:6004@16004 slave 258d00326ff3b038e1d5af6b4d06423a31161ce7 0 1686560943122 4 connected
c4824984fafba7dda4c55975f7f8745234a6968e 172.31.71.128:6002@16002 master - 0 1686560943523 2 connected 5461-10922
258d00326ff3b038e1d5af6b4d06423a31161ce7 172.31.71.128:6001@16001 myself,master - 0 1686560941000 1 connected 0-5460
6 集群状态查看
## 登录集群后
cluster info
[root@localhost redis-4.0.9]# redis-cli -h 172.31.71.128 -p 6001 -a 123456 -c
172.31.71.128:6001> cluster info
cluster_state:ok
cluster_slots_assigned:16384
cluster_slots_ok:16384
cluster_slots_pfail:0
cluster_slots_fail:0
cluster_known_nodes:6
cluster_size:3
cluster_current_epoch:6
cluster_my_epoch:1
cluster_stats_messages_ping_sent:1433
cluster_stats_messages_pong_sent:1407
cluster_stats_messages_sent:2840
cluster_stats_messages_ping_received:1402
cluster_stats_messages_pong_received:1433
cluster_stats_messages_meet_received:5
cluster_stats_messages_received:2840
~