The main purpose of this article is to build your ownRedis The process of sentinel mode cluster, Facilitate the repetitive work of later construction.
First, a little bit. Learn to read the official website when learning any knowledge, therefore, Please refer to the official website for configuration. I want to save myself, Built according to the company's specifications. Official website address:https://redis.io/
<https://redis.io/>
There is an official download address, You can download all versions ofRedis:http://download.redis.io/releases/
<http://download.redis.io/releases/>

Because inLinux Environment building, I want to save myself, It can be directly written into scripts and executed together, The installation package is directly in theLinux For download, If you can't download, It can be downloaded in advance. I chooseredis3.2.8 Version to install.

I have three machines in the cluster, Set up one main, two standby and three sentries.

One, First of allRedis Construction of itself, Function:
Run the following script directly to create the directory and install.



# Establishredis Temporary directory mkdir /app/tmp cd /app/tmp/ chmod -R 777 /app wget
http://download.redis.io/releases/redis-3.2.8.tar.gz tar -zxvf
redis-3.2.8.tar.gz cd /app/tmp/redis-3.2.8 # installredis make PREFIX=/app/redis
install # Establishredis List of documents mkdir -p /app/redis/conf mkdir -p /app/redis/data mkdir
-p /app/redis/run mkdir -p /app/redis/log mkdir –p /app/redis/sentinel mkdir -p
/app/redis/scripts # Create data directory cd /app/redis/data mkdir REDIS_CLUSTER_SVR_03 #
create profile cd /app/redis/conf touch REDIS_CLUSTER_SVR_03.conf Modify the configuration file, command:vi
REDIS_CLUSTER_SVR_03.conf
Save the following to REDIS_CLUSTER_SVR_03.conf, Log and other files/ Catalog to be modified, And set the password
daemonize yes # To configureredis Whether to usedaemon Mode operation pidfile
/app/redis/run/REDIS_CLUSTER_SVR_03.pid # Appointredis RuntimePID file port 8080 # Service port
tcp-backlog 511 # Set uptcp-backlog Size bind 10.202.107.161 # Appointredis ServiceIP timeout
180 # How many seconds after the client is idle, close the connection tcp-keepalive 60 # Specify send to client"ACKs" Time interval of instruction, The recommended value is60s loglevel
notice # Set log level logfile "/app/redis/log/REDIS_CLUSTER_SVR_03.log" # Specify log file
databases 16 # Set the number of databases, Default is16 individual save 900 1 save 300 10 save 60 100 #
Set upredis Data writingRDB Data file policy stop-writes-on-bgsave-error yes #
in useRDB In case of snapshot, When saving fails, Allow users to write rdbcompression yes # ExportingRDB When data file, Compression or not
rdbchecksum yes # exportRDB After data file, Check or not dbfilename REDIS_CLUSTER_SVR_03.rdb #
RDB Local filename of the database file dir /app/redis/data/REDIS_CLUSTER_SVR_03 # RDB Storage directory of database files
slave-serve-stale-data yes #
staymaster/slave Lost connection between, orslave Being frommaster When nodes synchronize data, Responseclient Request # yes, responseclient Request
slave-read-only yes # Set upslave Node read only mode repl-diskless-sync no
repl-diskless-sync-delay 5 repl-disable-tcp-nodelay no #
repl-diskless-sync The properties are still in the experimental stage, Set to”no”, Turn this feature off slave-priority 100 Requirepass
"xxx.123456" # Set upmaster Password for node, Be used formaster node #masterauth "xxx.123456" #
Specify the password for the primary node, Be used forslave node maxclients 1000 # Set the maximum number of connections maxmemory 512mb # Set upredis Maximum memory of
maxmemory-policy volatile-lru # Whenredis Memory used reachedmaxmemory Time, Which delete policy is used to clean up memory
maxmemory-samples 3 # implementmaxmemory-policy Right timeN individualKey Inspection appendonly yes # Is it enabled?Append
Only Mode appendfilename "REDIS_CLUSTER_SVR_03.aof" # Append Only File File name
appendfsync everysec # Set upAOF Mode synchronize data to disk mode no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100 auto-aof-rewrite-min-size 64mb
aof-load-truncated yes lua-time-limit 5000 # Each executionLUA SCRIPTING Maximum time of
slowlog-log-slower-than 10000 # Record execution time exceeds10000 microseconds Orders slowlog-max-len
128 # slowlog Length latency-monitor-threshold 0 # Set uplatency monitor Interval of execution,"0" To turn off the pilot function
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 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 Then startredis, View operation.
# start-upredis /app/redis/bin/redis-server /app/redis/conf/REDIS_CLUSTER_SVR_03.conf
# View run to city ps -ef|grep redis Similar configuration for the other two, Then start, So far, three single nodesredis Build up
Two, Setup main backup
Add to the configuration file for two of the machines: slaveof masterIp port that will do
Three, Sentinel allocation
Create the following directories and files




cd /app/redis/conf mkdir /app/redis/sentinel/REDIS_CLUSTER_SEN_01 touch
REDIS_CLUSTER_SEN_01.conf

modifysentinel configuration file: vi REDIS_CLUSTER_SEN_01.conf
Add the following configuration to the configuration file: daemonize yes port 8001 bind 10.202.105.68 # Current nodeIP sentinel
announce-ip "10.202.105.68" dir "/app/redis/sentinel/REDIS_CLUSTER_SEN_01"
pidfile "/app/redis/run/REDIS_CLUSTER_SEN_01.pid" loglevel notice logfile
"/app/redis/log/REDIS_CLUSTER_SEN_01.log" #sentinel monitor Cluster name Master nodeIP Master nodeport
slave Number sentinel monitor REDIS_CLUSTER 10.202.105.68 8080 2 sentinel
failover-timeout REDIS_CLUSTER 60000 sentinel auth-pass REDIS_CLUSTER admin.123
sentinel config-epoch REDIS_CLUSTER 0 sentinel leader-epoch REDIS_CLUSTER 0
start-upsentinel, And see the sentinel progress:
/app/redis/bin/redis-sentinel /app/redis/conf/REDIS_CLUSTER_SEN_01.conf ps
-ef|grep redis Configure the other two nodes similarly and start
thus,sentinel Moderedis High availability cluster construction completed.