Linux builds Redis cluster __linux

First, the preparation of more than one Linux machine, the normal production environment in accordance with the deployment of Redis cluster is required 3 machines, 1 s machine dual-node (master node, from node), 3 machines 6 nodes cluster. Redis Cluster official has given a standard that must be 6 nodes above the cluster. (Of course I can learn to build one, but to set 6 nodes)

Second, prepare the required installation kits and other tools:

Baidu Network disk: Https://pan.baidu.com/s/1RQhrdnMXHU-yGc6Izz7xoA Password: SFZN

Inside is the Linux edition Redis installs the package, constructs the cluster needs the plug-in Redis-3.3.3.gem, a visual client

Third, the preparation of environmental installation:

1. Decompression Redis installation package: TAR-ZXVF redis-3.2.8.tar.gz

2.cd into the redis-3.2.8 folder (if you are unfamiliar with Linux commands, you can see my previous blog Learning: Linux Command Encyclopedia)

3.make (compilation environment)

4.cd into/opt/redis-3.2.8/src/execution: make install Prefix=/opt/redis

Note: If intermediate compile error, it is your machine does not install C + + What kind of compilation environment because Redis is the C language development needs these environment support, the machine can connect the external network can direct source command Download press: Yum Install gcc-c++

Can not connect the external network is very, very, very troublesome, you need to go to the Internet to download a package, one by one installation and can not appear in the middle of a mistake.

The steps above are common steps for 3 machines

Four, Cp/opt/redis/redis-3.2.8/src/redis-trib.rb/opt/redis/bin #只需要第一台机器操作

create two instances on each machine use the steps

1.mkdir-p/opt/redis/instance/ins Port number/conf

2. Mkdir-p/opt/redis/instance/ins Port number/data

3. Mkdir-p/opt/redis/instance/ins Port number/data

4. Mkdir-p/opt/redis/instance/ins Port number/log

5.vim/opt/redis/instance/ins Port number/conf/redis.conf

The content is as follows (general configuration): need to pay attention to the place marked red

#GENERAL

Protected-mode No

Bind 192.168.0.182 127.0.0.1

Daemonize Yes

Tcp-backlog 511

Timeout 0

Tcp-keepalive 0

LogLevel Notice

Databases 16

Dir/opt/redis/instance/ins7000/data

Slave-serve-stale-data Yes

#slave只读

Slave-read-only Yes

#not Use default

Repl-disable-tcp-nodelay Yes

Slave-priority 100

#打开aof持久化

AppendOnly Yes

#每秒一次aof写

Appendfsync everysec

Fsync the new write operation when #关闭在aof rewrite

No-appendfsync-on-rewrite Yes

Auto-aof-rewrite-min-size 64MB

Lua-time-limit 5000

#打开redis集群

cluster-enabled Yes

#节点互连超时的阀值

Cluster-node-timeout 15000

Cluster-migration-barrier 1

Slowlog-log-slower-than 10000

Slowlog-max-len 128

Notify-keyspace-events ""

Hash-max-ziplist-entries 512

Hash-max-ziplist-value 64

List-max-ziplist-entries 512

List-max-ziplist-value 64

Set-max-intset-entries 512

Zset-max-ziplist-entries 128

Zset-max-ziplist-value 64

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

#包含通用配置

#include/root/redis/conf/redis-common.conf

#监听tcp端口

Port 7000

#最大可用内存

MaxMemory 100m

#内存耗尽时采用的淘汰策略:

# VOLATILE-LRU-> Remove the key with a expire set using an LRU algorithm

# ALLKEYS-LRU-> Remove any key accordingly to the LRU algorithm

# volatile-random-> Remove a random key with a expire set

# allkeys-random-> Remove a random key, any key

# Volatile-ttl-> Remove the key with the nearest Expire time (minor TTL)

# noeviction-> don ' t expire at all, just return a error on write operations

Maxmemory-policy ALLKEYS-LRU

#aof存储文件

Appendfilename "Appendonly.aof"

#不开启rdb存储, only for adding slave procedures

Dbfilename Dump.rdb

#cluster配置文件 (Start automatic generation)

Cluster-config-file nodes.conf

#部署在同一机器的redis实例, the Auto-aof-rewrite to rub open, because the cluster environment memory footprint is basically the same.

#防止同意机器下瞬间fork所有redis进程做aof rewrite, consuming a lot of memory

Auto-aof-rewrite-percentage 80-100

Five, start all 6 instances./redis-server Conf configuration file Address

/opt/redis/bin/redis-server/opt/redis/instance/ins Port number/conf/redis.conf

Install yum install ruby RubyGems on a single machine to build a cluster environment

Install the plugin gem install-l Redis-3.3.3.gem (This is very important and is a tool for managing Redis clusters)

Six, create the cluster/opt/redis/bin/redis-trib.rb created--replicas 1 ip1:port1 ip2:port2 ...

After the creation, if there is no error message will display the master and slave node information of the cluster

Vii. using the REDIS-TRIB.RB command Redis cluster management tools

1. View cluster information./REDIS-TRIB.RB Info 192.168.0.181:7001 (any node in the cluster can)

1, create: Creating a Cluster
2, check: Inspection cluster
3, Info: View the cluster information
4. FIX: Fix the cluster
5, Reshard: Online migration slot
6, Rebalance: Balance cluster node slot number
7, Add-node: The new node to join the cluster
8, Del-node: Remove the node from the cluster
9. Set-timeout: Set timeout for heartbeat connection between cluster nodes
10. Call: Execute commands on all nodes of the cluster

11, import: The external Redis data into the cluster

The specific self-Baidu bar