Redis Cluster Proxy (Predixy)

Predixy

 

오픈소스로 Redis 센티넬 및 Redis 클러스터를 위한 고성능 및 모든 기능을 갖춘 프록시이다.

 

 

 

 

Install & Config

 

github :  https://github.com/joyieldInc/predixy

 

 

Install

1. Package Install

# apt install -y build-essential

 

2. git clone

#  git clone https://github.com/joyieldInc/predixy.git

 

3. Build

# cd predixy

# make

 

4. copy command

# cd src/predixy /usr/local/bin/

# predixy -h

 

 

Config

1. predixy config

# vim conf/predixy.conf

Bind 0.0.0.0:7617

WorkerThreads 4

MaxMemory 0

ClientTimeout 300

BufSize 4096

LogRotate 1d

LogVerbSample 0

LogDebugSample 0

LogInfoSample 10000

LogNoticeSample 1

LogWarnSample 1

LogErrorSample 1

Include cluster.conf

Include latency.conf

 

2. cluster config

# vim conf/cluster.conf

ClusterServerPool {

    MasterReadPriority 60

    StaticSlaveReadPriority 50

    DynamicSlaveReadPriority 50

    RefreshInterval 1

    ServerTimeout 1

    ServerFailureLimit 10

    ServerRetryTimeout 1

    KeepAlive 120

    Servers {

        + 192.168.50.14:6379

        + 192.168.50.15:6379

        + 192.168.50.16:6379

        + 192.168.50.14:6380

        + 192.168.50.15:6380

        + 192.168.50.16:6380

        + 192.168.50.14:6381

        + 192.168.50.15:6381

        + 192.168.50.16:6381

    }

}

 

3. run predixy

# predixy conf/predixy.conf

predixy conf/predixy.conf

2020-05-25 13:44:29.123965 N Proxy.cpp:112 predixy listen in 0.0.0.0:7617

2020-05-25 13:44:29.124092 N Proxy.cpp:143 predixy running with Name:PredixyExample Workers:4

2020-05-25 13:44:29.124417 N Handler.cpp:456 h 0 create connection pool for server 192.168.50.15:6380

2020-05-25 13:44:29.124436 N ConnectConnectionPool.cpp:42 h 0 create server connection 192.168.50.15:6380 8

2020-05-25 13:44:29.125279 N ClusterServerPool.cpp:174 redis cluster create new group 29c5855872ff38f9f2a4203094fc4928fec7744f 192.168.50.15:6379@16379 master -

2020-05-25 13:44:29.125298 N ClusterServerPool.cpp:174 redis cluster create new group b1e905ca7d3fb5f743930565994aef6eb48cfe95 192.168.50.16:6379@16379 master -

2020-05-25 13:44:29.125308 N ClusterServerPool.cpp:174 redis cluster create new group 186deee637ea73f136d671f674320b424c3dddf4 192.168.50.14:6379@16379 master -

~~~~~~~~~~~~~~~~~~~~~~~~

 

Test

1. Client Get Query

# redis-cli -p 7617 -h 192.168.50.13 get hello

"world"

predixy가 실행중인 서버에서 hello key의 world value를 리턴하였다.

 

만약 predixy가 없는 상황이라면 redis cluster에 직접 질의를 해야하고 보통의 구조에서는 하나의 Master에서 모든 요청을 처리하기때문에 부하가 발생할 수 있다.

 

 

2. Log 

2020-05-25 13:46:37.252826 N Handler.cpp:456 h 3 create connection pool for server 192.168.50.14:6380

2020-05-25 13:46:37.252874 N ConnectConnectionPool.cpp:42 h 3 create server connection 192.168.50.14:6380 40

2020-05-25 13:46:38.012174 N Handler.cpp:373 h 1 accept c 192.168.50.10:35870 42 assign to h 0

2020-05-25 13:46:38.012860 N Handler.cpp:212 h 0 remove c 192.168.50.10:35870 42 with status 2 End

192.168.50.10에서 온 요청을 redis master 중 요청한 key를 가진 slot이 있는 master (192.168.50.14) 로 전달하였다.

 

 

3. redis latency check (predixy support)

# redis-cli -p 7617 -h 192.168.50.13 INFO Latency all

# LatencyMonitor

LatencyMonitorName:all

<=          100                   36                3 100.00%

T            12                   36                3

 

# ServerLatencyMonitor

ServerLatencyMonitorName:192.168.50.14:6379 all

ServerLatencyMonitorName:192.168.50.15:6379 all

ServerLatencyMonitorName:192.168.50.16:6379 all

ServerLatencyMonitorName:192.168.50.14:6380 all

ServerLatencyMonitorName:192.168.50.15:6380 all

ServerLatencyMonitorName:192.168.50.16:6380 all

ServerLatencyMonitorName:192.168.50.14:6381 all

ServerLatencyMonitorName:192.168.50.15:6381 all

ServerLatencyMonitorName:192.168.50.16:6381 all

 

predixy에서 지원하는 기능 중 하나로 각 Redis node에 대한 Latency를 확인할 수 있다.

 

Redis Cluster 생성은 아래 링크

https://lascrea.tistory.com/214

 

 

참조 URL

• https://github.com/joyieldInc/predixy

• http://blog.haandol.com/2018/09/07/redis-cluster-predixy.html

• https://freesunny.tistory.com/56