Of Stack

How do I deploy redis cluster's methods with docker

  • 2020-09-28 09:17:40
  • OfStack

preface

As I am a fan of docker, I do not like to install various environments, and installation of ES4en-ES5en is a little tedious, so I simply use docker to do redis cluster.

This article USES a pseudo cluster. The real cluster can be placed on a different machine. Ports 7001-7006.

Working directory: /data/redis

Create folder

First, create a folder for the port corresponding to the heap. Below is the script

create.sh 


for i in `seq 7001 7006`
do
 mkdir -p ${i}/data
done

Add execute permissions and execute 


chmod 777 create.sh
./create.sh

Deploy redis

I don't like docker run, so I use ES37en-ES38en. The official documentation https: / / docs. docker. com/compose/overview /

Create docker - compose. yml

The reason for using THE publicisworldwide/ ES53en-ES54en image is that the configuration file has already been written. If the configuration file is not mounted, it is lazy. Don't be like me

docker-compose.yml 


version: '3.4'

x-image:
 &default-image
 publicisworldwide/redis-cluster
x-restart:
 &default-restart
 always
x-netmode:
 &default-netmode
 host

services:
 redis1:
 image: *default-image
 network_mode: *default-netmode
 restart: *default-restart
 volumes:
 - /data/redis/7001/data:/data
 environment:
 - REDIS_PORT=7001

 redis2:
 image: *default-image
 network_mode: *default-netmode
 restart: *default-restart
 volumes:
 - /data/redis/7002/data:/data
 environment:
 - REDIS_PORT=7002

 redis3:
 image: *default-image
 network_mode: *default-netmode
 restart: *default-restart
 volumes:
 - /data/redis/7003/data:/data
 environment:
 - REDIS_PORT=7003

 redis4:
 image: *default-image
 network_mode: *default-netmode
 restart: *default-restart
 volumes:
 - /data/redis/7004/data:/data
 environment:
 - REDIS_PORT=7004

 redis5:
 image: *default-image
 network_mode: *default-netmode
 restart: *default-restart
 volumes:
 - /data/redis/7005/data:/data
 environment:
 - REDIS_PORT=7005

 redis6:
 image: *default-image
 network_mode: *default-netmode
 restart: *default-restart
 volumes:
 - /data/redis/7006/data:/data
 environment:
 - REDIS_PORT=7006

Start all redis 


docker-compose up -d

If it's wrong, it's a version problem.

View the docker version 


docker -v

The docker-ES77en. yml version supported can be viewed in the document. For the convenience of your viewing, I have copied it out. Generally speaking, however, docker upgrades quickly and iterates quickly, so it is better to use the latest version.

Compose file format Docker Engine release
3.4 17.09.0+
3.3 17.06.0+
3.2 17.04.0+
3.1 1.13.1+
3.0 1.13.0+
2.3 17.06.0+
2.2 1.13.0+
2.1 1.12.0+
2.0 1.10.0+
1.0 1.9.1.+

Deploy cluster

Run the following command (inem0o/ ES90en-ES91en no pull will automatically pull)

Note: add -ES97en, otherwise the subsequent confirmation cannot continue 


docker run --rm -it inem0o/redis-trib create --replicas 1 192.168.30.70:7001 192.168.30.70:7002 192.168.30.70:7003 192.168.30.70:7004 192.168.30.70:7005 192.168.30.70:7006

There will be a 


>>> Creating cluster
>>> Performing hash slots allocation on 6 nodes...
Using 3 masters:
192.168.30.70:7001
192.168.30.70:7002
192.168.30.70:7003
Adding replica 192.168.30.70:7004 to 192.168.30.70:7001
Adding replica 192.168.30.70:7005 to 192.168.30.70:7002
Adding replica 192.168.30.70:7006 to 192.168.30.70:7003
M: 5a7bd7698b1fe55beb44faac051d66c8a03fd1b1 192.168.30.70:7001
  slots:0-5460 (5461 slots) master
M: bb8fda08e1dcd39e937443f81b5458e80f52d804 192.168.30.70:7002
  slots:5461-10922 (5462 slots) master
M: d907530ee9f6356e0e61a6c7f4d0cc1b22da1189 192.168.30.70:7003
  slots:10923-16383 (5461 slots) master
S: 52eee69afa751d71c84d5436d14b0e16a37536fa 192.168.30.70:7004
  replicates 5a7bd7698b1fe55beb44faac051d66c8a03fd1b1
S: 701ed2fbb3df9fc63b083818620f5c020d05e323 192.168.30.70:7005
  replicates bb8fda08e1dcd39e937443f81b5458e80f52d804
S: a3548a9dffa225f05786ea2289db65f5f1c623be 192.168.30.70:7006
  replicates d907530ee9f6356e0e61a6c7f4d0cc1b22da1189
Can I set the above configuration? (type 'yes' to accept):

Input yes 


Waiting for the cluster to join.....
>>> Performing Cluster Check (using node 192.168.30.70:7001)
M: 5a7bd7698b1fe55beb44faac051d66c8a03fd1b1 192.168.30.70:7001
  slots:0-5460 (5461 slots) master
  1 additional replica(s)
M: d907530ee9f6356e0e61a6c7f4d0cc1b22da1189 192.168.30.70:7003@17003
  slots:10923-16383 (5461 slots) master
  1 additional replica(s)
S: a3548a9dffa225f05786ea2289db65f5f1c623be 192.168.30.70:7006@17006
  slots: (0 slots) slave
  replicates d907530ee9f6356e0e61a6c7f4d0cc1b22da1189
S: 701ed2fbb3df9fc63b083818620f5c020d05e323 192.168.30.70:7005@17005
  slots: (0 slots) slave
  replicates bb8fda08e1dcd39e937443f81b5458e80f52d804
S: 52eee69afa751d71c84d5436d14b0e16a37536fa 192.168.30.70:7004@17004
  slots: (0 slots) slave
  replicates 5a7bd7698b1fe55beb44faac051d66c8a03fd1b1
M: bb8fda08e1dcd39e937443f81b5458e80f52d804 192.168.30.70:7002@17002
  slots:5461-10922 (5462 slots) master
  1 additional replica(s)
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.

To complete.

Problems encountered

Create the cluster will encounter when Waiting for the cluster to join... I didn't succeed

Answer: The network mode is changed to host, docker run mode plus --net host, ES130en-ES131en mode plus network_mode: host.

I used to map port 7001:7000+17001:17000, but I can't, I don't know why.

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