linux 安装redis集群一台机器上安装六个redis 集群

傷城~ 2022-05-31 07:52 559阅读 0赞

安装单机版redis

下载网址：[https://redis.io/download][https_redis.io_download]

写文章时最新版本为：redis-4.0.1.tar.gz

![210978-20170823121633636-1205387981.png][]

可以先下载到windows操作系统，然后拷贝到centos。

下载成功后，在centos上创建一个目录，存放我们的软件，我比较喜欢放在/soft目录下。

\[root@localhost /\]\# mkdir /soft

然后利用WinScp工具拷贝到centos系统，放在/soft/目录下。

可以在 这儿下载http://download.csdn.net/download/u013308504/10250657   解压后可以直接使用   可以省略步骤3和4

# 1、安装gcc #

\[root@localhost ~\]\# yum install gcc

中间有2次提示，要求输入：yes 或 y，我们按照提示来就可以。

# 2、安装pstree #

\[root@localhost ~\]\# yum install psmisc

中间有1次提示，要求输入：y。按照提示来就可以。

# 3、解压tar包 #

\[root@localhost /\]\# cd /soft

\[root@localhost soft\]\# tar zxvf redis-4.0.1.tar.gz

\[root@localhost soft\]\# mv redis-4.0.1 /usr/local/redis

# 4、编译安装 #

\[root@localhost soft\]\# cd /usr/local/redis

\[root@localhost redis\]\# make MALLOC=libc

\[root@localhost redis\]\# make & make install

说明：如果在make的时候不指定内存管理方式，会报错的：

zmalloc.h:50:31: 致命错误：jemalloc/jemalloc.h：没有那个文件或目录。

malloc是管理内存碎片的。

# 5、启动reids 看是否安装成功 #

\[root@localhost redis\]\# ./src/redis-server redis.conf

如果报没得权限 在当前目录下 执行命令 chmod 777 ./src/redis-server

如果成功，如下图：

![210978-20170823122118277-1223207293.png][]

然后新开终端，打开redis客户端

\[root@localhost ~\]\# cd /usr/local/redis/

\[root@localhost redis\]\# src/redis-cli

![210978-20170823121656668-1206719033.png][]

表示已经启动成功。

我相信单机安装有点linux基础的同学都能安装成功。

集群redis

1、安装ruby

清理已安装过的 ruby

yum erase ruby ruby-libs ruby-mode ruby-rdoc ruby-irb ruby-ri ruby-docs

手动下载

https://cache.ruby-lang.org/pub/ruby/2.2/ruby-2.2.7.tar.gz

上传到linux环境 并解压

tar xf ruby-2.2.7.tar.gz

刚开始用命令yum install ruby安装，但是是2.0以下的版本。我把它卸载了，重新下的2.0以上的包安装

把安装包上传到指定目录，并解压

命令：tar zxvf ruby-2.2.7.tar.gz；解压后，进入ruby-2.2.7目录下，依次执行下面命令

命令：./configure

命令：make & make install

添加环境变量 export PATH=/usr/local/ruby-2.2.7/bin:**$PATH**

2、查看ruby信息

命令：ruby -v

3、要支持redis的通信，需要下载redis相关包

命令：gem install redis

新建6个文件夹 cp -RF redis 7001 cp -RF redis 7002....

redis.conf

配置文件 全部替换即可redis.conf 并修改相应的IP 与端口

\#自己的ip  
bind 192.168.33.159  
port 7001  
timeout 0  
tcp-keepalive 0  
loglevel notice  
databases 16  
save 900 1  
save 300 10  
save 60 10000  
stop-writes-on-bgsave-error yes  
rdbcompression yes  
rdbchecksum yes  
dbfilename dump.rdb  
dir ./  
\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\# REPLICATION \#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#  
slave-serve-stale-data yes  
slave-read-only yes  
repl-diskless-sync no  
repl-diskless-sync-delay 5  
repl-disable-tcp-nodelay no  
slave-priority 100  
\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\# APPEND ONLY MODE \#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#  
appendonly yes  
appendfilename "appendonly.7001.aof"  
appendfsync everysec  
no-appendfsync-on-rewrite no  
auto-aof-rewrite-percentage 100  
auto-aof-rewrite-min-size 64mb  
aof-load-truncated yes  
lua-time-limit 5000  
cluster-enabled yes  
cluster-config-file nodes-7001.conf  
cluster-node-timeout 15000  
cluster-slave-validity-factor 10  
cluster-migration-barrier 1  
cluster-require-full-coverage yes  
\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\# SLOW LOG \#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#  
slowlog-log-slower-than 10000  
slowlog-max-len 128  
latency-monitor-threshold 0  
notify-keyspace-events ""  
hash-max-ziplist-entries 512  
hash-max-ziplist-value 64  
list-max-ziplist-size -2  
list-compress-depth 0  
set-max-intset-entries 512  
zset-max-ziplist-entries 128  
zset-max-ziplist-value 64  
hll-sparse-max-bytes 3000  
activerehashing yes  
client-output-buffer-limit normal 0 0 0  
client-output-buffer-limit slave 256mb 64mb 60  
client-output-buffer-limit pubsub 32mb 8mb 60  
hz 10

aof-rewrite-incremental-fsync yes

### 启动集群 前 先启动所有的单个redis ###

\[root@fangxuanz 7001\]\# ./src/redis-trib.rb create --replicas 1 192.168.33.159:7001 192.168.33.159:7002 192.168.33.159:7003 192.168.33.159:7004 192.168.33.159:7005 192.168.33.159:7006  
>>> Creating cluster

\[ERR\] Sorry, can't connect to node 192.168.33.159:7001

出现这个错误 是由于redis.conf 配置文件是127.0.0.1 修改成对应的内网IP即可

\[root@fangxuanz src\]\# ./redis-trib.rb create --replicas 1 192.168.33.159:7001 192.168.33.159:7002 192.168.33.159:7003 192.168.33.159:7004 192.168.33.159:7005 192.168.33.159:7006

\-bash: ./redis-trib.rb: 权限不够

\[root@fangxuanz src\]\# chmod  777 ./redis-trib.r

### 使用redis-trib.rb 启动 集群 ###

\[root@fangxuanz 7001\]\# ./src/redis-trib.rb create --replicas 1 192.168.33.159:7001 192.168.33.159:7002 192.168.33.159:7003 192.168.33.159:7004 192.168.33.159:7005 192.168.33.159:7006

\-------------启动日志

>>> Creating cluster  
>>> Performing hash slots allocation on 6 nodes...  
Using 3 masters:  
192.168.33.159:7001  
192.168.33.159:7002  
192.168.33.159:7003  
Adding replica 192.168.33.159:7005 to 192.168.33.159:7001  
Adding replica 192.168.33.159:7006 to 192.168.33.159:7002  
Adding replica 192.168.33.159:7004 to 192.168.33.159:7003  
>>> Trying to optimize slaves allocation for anti-affinity  
\[WARNING\] Some slaves are in the same host as their master  
M: f4becd9fda2f030d45894adf29299b713464deca 192.168.33.159:7001  
   slots:0-5460 (5461 slots) master  
M: 1761b5c929704f4b28577e8a45118265af3000ec 192.168.33.159:7002  
   slots:5461-10922 (5462 slots) master  
M: 2fb1ad83a7663a54eb873e99f69a02a678ec5fe1 192.168.33.159:7003  
   slots:10923-16383 (5461 slots) master  
S: 8e822227ee657be7e781cfb9ad3057b0a20fe89f 192.168.33.159:7004  
   replicates f4becd9fda2f030d45894adf29299b713464deca  
S: fadce9dbd7c96990116c712d7e120a293427358a 192.168.33.159:7005  
   replicates 1761b5c929704f4b28577e8a45118265af3000ec  
S: 0efa39d0ec0d487c8ed2b019ce977fc9b8c933fb 192.168.33.159:7006  
   replicates 2fb1ad83a7663a54eb873e99f69a02a678ec5fe1  
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 192.168.33.159:7001)  
M: f4becd9fda2f030d45894adf29299b713464deca 192.168.33.159:7001  
   slots:0-5460 (5461 slots) master  
   1 additional replica(s)  
S: fadce9dbd7c96990116c712d7e120a293427358a 192.168.33.159:7005  
   slots: (0 slots) slave  
   replicates 1761b5c929704f4b28577e8a45118265af3000ec  
M: 2fb1ad83a7663a54eb873e99f69a02a678ec5fe1 192.168.33.159:7003  
   slots:10923-16383 (5461 slots) master  
   1 additional replica(s)  
S: 8e822227ee657be7e781cfb9ad3057b0a20fe89f 192.168.33.159:7004  
   slots: (0 slots) slave  
   replicates f4becd9fda2f030d45894adf29299b713464deca  
M: 1761b5c929704f4b28577e8a45118265af3000ec 192.168.33.159:7002  
   slots:5461-10922 (5462 slots) master  
   1 additional replica(s)  
S: 0efa39d0ec0d487c8ed2b019ce977fc9b8c933fb 192.168.33.159:7006  
   slots: (0 slots) slave  
   replicates 2fb1ad83a7663a54eb873e99f69a02a678ec5fe1  
\[OK\] All nodes agree about slots configuration.  
>>> Check for open slots...  
>>> Check slots coverage...  
\[OK\] All 16384 slots covered.

![70][]

# 连接redis集群  #

在192.168.33.159机器上进行连接

7001目录下执行

./src/redis-cli -h 192.168.33.159 -c -p 7001

![70 1][]

已经自动跳转到了7002服务器了

# 续 #

如果重启服务器后，再次执行redis-trib.rb会报错如下错误：

\[ERR\] Node 192.168.33.159:7001 is not empty. Either the node already knows other nodes (check with CLUSTER NODES) or contains some key in database 0.

解决方法：

删除dump.rdb和nodes-7001.conf这两个文件，然后重启redis服务，最后启动集群。

1次不行搞2次，2次不行搞3次。多删除几次

[https_redis.io_download]: https://redis.io/download
[210978-20170823121633636-1205387981.png]: /images/20220531/08ab71eb65ef4e8ba3b7133120cce3ee.png
[210978-20170823122118277-1223207293.png]: /images/20220531/2591730f536b4325a1e8cd76593c3bec.png
[210978-20170823121656668-1206719033.png]: /images/20220531/a8197f87ea514d1ab2832b4906a2c1cd.png
[70]: /images/20220531/96aba9708de84fd89b69739581b50663.png
[70 1]: /images/20220531/24bcc80d90d54acab5fe8a8f832f35ef.png