Docker quick build master/Slave + Sentinel monitoring

docker pull redisCopy the code

├ ─ ─ the conf │ ├ ─ ─ redis_6379. Conf │ ├ ─ ─ redis_6380. Conf │ ├ ─ ─ redis_6381. Conf │ ├ ─ ─ sentinel_26379. Conf │ ├ ─ ─ Sentinel_26380. Conf │ └ ─ ─ sentinel_26381. Conf ├ ─ ─ data_6379 │ ├ ─ ─ appendonly. Aof │ └ ─ ─ dump. The RDB ├ ─ ─ data_6380 │ └ ─ ─ ├── ├─ ├─ runCopy the code

https://raw.githubusercontent.com/antirez/redis/5.0/redis.confCopy the code

port 26379
dir "/etc/redis"Sentinel monitor myMaster 172.17.0.2 6379 1 Sentinel Down-after-milliseconds myMaster 60000 Sentinel Failover -timeout mymaster 180000Copy the code

#! /usr/bin/env bash
set -e

The current directory of the script
cPath=$(cd $(dirname "$0") | |exit; pwd)

# the root directory
dirPath=$(dirname "$cPath")

# fetch port
port="The $1"
if[[!"$port"]].then
  port=6379
fi

Create a data directory
mkdir -p "$dirPath"/data_"$port"

Delete the started service
containerId=$(docker ps -a | grep "redis_$port" | awk -F' ' '{print $1}')
if [[ "$containerId"]].then
    echo "Deleting service:${containerId}"
    docker rm -f ${containerId} > /dev/null
fi

# start service
docker run -itd --privileged=true -p "$port":6379 --name redis_"$port" \
-v="$dirPath"/conf/redis_"$port".conf:/etc/redis/redis.conf \
-v="$dirPath"/data_"$port":/data \
redis \
redis-server /etc/redis/redis.confCopy the code

#! /usr/bin/env bash
set -e

The current directory of the script
cPath=$(cd $(dirname "$0") | |exit; pwd)

# the root directory
dirPath=$(dirname "$cPath")

# set port
port=The $1
if[[!"$port"]].then
  port=26379
fi

Delete the started service
containerId=$(docker ps -a | grep "sentinel_$port" | awk -F' ' '{print $1}')
if [[ "$containerId"]].then
    echo "Deleting service:${containerId}"
    docker rm -f ${containerId} > /dev/null
fi

# start service
docker run -itd --privileged=true -p "$port":26379 --name "sentinel_$port" \
-v="${dirPath}/conf/sentinel_${port}.conf":/etc/redis/sentinel.conf \
-w=/etc/redis/ \
redis \
redis-server /etc/redis/sentinel.conf --sentinel
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1:X 10 May 2020 08:10:48.234 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
1:X 10 May 2020 08:10:48.235 # Sentinel config file /etc/redis/sentinel.conf is not writable: Permission denied. Exiting...

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docker run -it --rm --privileged=true -v=/root/docker-config/redis/conf/:/etc/redis/ redis chown -R redis /etc/redis

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root@DESKTOP-Q13EI52:~/docker-config/redis# docker run -it --rm --privileged=true -v=/root/docker-config/redis/conf/:/etc/redis/ redis ls -l /etc/redis/
total 204
-rw-r--r-- 1 redis root 61793 May 10 07:41 redis_6379.conf
-rw-r--r-- 1 redis root 61864 May 10 12:52 redis_6380.conf
-rw-r--r-- 1 redis root 61890 May 10 12:52 redis_6381.conf
-rw-r--r-- 1 redis root   459 May 10 12:52 sentinel_26379.conf
-rw-r--r-- 1 redis root   161 May 10 07:56 sentinel_26380.conf
-rw-r--r-- 1 redis root   161 May 10 10:16 sentinel_26381.conf

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sh scripts/run.sh 6379Copy the code

sh scripts/run.sh 6380
sh scripts/run.sh 6381Copy the code

docker exec -it redis_6380 bash
docker exec -it redis_6381 bash
Run the command after entering the container
redis-cli

Set to slaveSlaveof 172.17.0.2 6379Copy the code

sh scripts/sentinel.shCopy the code

root@DESKTOP-Q13EI52:~/docker-config/redis# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED              STATUS              PORTS                                NAMES
e518580ce8eb        redis               "Docker - entrypoint. S..."About a minute ago Up About a minute 6379/ TCP, 0.0.0.00:26379 ->26379/ TCP sentinel_26379 e2EF253D3513 redis"Docker - entrypoint. S..."2 hours ago Up 2 hours 0.0.0.0:6381->6379/ TCP redis_6381 15fdc81eb530 redis"Docker - entrypoint. S..."2 hours ago Up 2 hours 0.0.0.0:6380->6379/ TCP redis_6380 77f4fdc84cb1 redis"Docker - entrypoint. S..."2 hours ago Up 2 hours 0.0.0.0:6379->6379/ TCP redis_6379Copy the code

1:X 10 May 2020 12:52:15.634 # +sdown master myMaster 172.17.0.26379
1:X 10 May 2020 12:52:15.634 # +odown master mymaster 172.17.0.26379 #quorum 1/1
1:X 10 May 2020 12:52:15.634 # +new-epoch 1
1:X 10 May 2020 12:52:15.634 # +try-failover master mymaster 172.17.0.26379
1:X 10 May 2020 12:52:15.649 # +vote-for-leader 6905a137af7baedbdfce4978d1d9126fdaad4faf 1
1:X 10 May 2020 12:52:15.649 # + election-leader master myMaster 172.17.0.26379
1:X 10 May 2020 12:52:15.649 # + fail-state-select-slave master mymaster 172.17.0.26379
1:X 10 May 2020 12:52:15.725 # +selected-slave slave 172.17.0.3:6379 172.17.0.36379 @mymaster 172.17.0.263791:X 10 May 2020 12:52:15.725 * + Fail-state-send-slaveof -noone slave 172.17.0.3:6379 172.17.0.36379@mymaster 172.17.0.2 6379 1:X 10 May 2020 12:52:15.781 * + Fail-state-wait-promotion slave 172.17.0.3:6379 172.17.0.36379@ Mymaster 172.17.0.2 6379 1:X 10 May 2020 12:52:16.798# +promoted-slave slave 172.17.0.3:6379 172.17.0.3 6379 @ mymaster 172.17.0.2 6379
1:X 10 May 2020 12:52:16.798 # + Fail-state-reconf-Slaves Master MyMaster 172.17.0.263791:X 10 May 2020 12:52:16.845 * +slave-reconf-sent slave 172.17.0.4:6379 172.17.0.4 6379 @mymaster 172.17.0.2 6379 1:X 10 May 2020 12:52:17.837 * +slave-reconf-inprog slave 172.17.0.4:6379 172.17.0.4 6379 @mymaster 172.17.0.2 6379 1:X 10 May 2020 12:52:17.837 * +slave-reconf-done slave 172.17.0.4:6379 172.17.0.4 6379 @mymaster 172.17.0.2 6379 1:X 10 May 2020 12:52:17. 937# + fail-end master mymaster 172.17.0.26379

Build to perform failover
1:X 10 May 2020 12:52:17.937 # +switch-master mymaster 172.17.0.2 6379 172.17.0.3 63791:X 10 May 2020 12:52:17.938 * +slave slave 172.17.0.4:6379 172.17.0.4 6379 @mymaster 172.17.0.3 6379 1:X 10 May 2020 12:52:17.938 * +slave slave 172.17.0.2:6379 172.17.0.2 6379 @ mymaster 172.17.0.3 6379 1:X 10 May 2020 12:53:18.010# +sdown slave 172.17.0.2:6379 172.17.0.2 6379 @mymaster 172.17.0.36379

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