Redis Server Docker

Popcorn Linux Demo on Youtube displays the Redis Server Docker Container migration.

Example for redis migration from x86 to ARM

Pull the h-container redis docker image from docker hub, then run the image detach as a container.

docker pull 123toorc/hcontainer-redis:hcontainer

docker run --cap-add all -d -p 6379:6379 155fea01651c

->       4927a9ad4109ce5561f8ad346372fa11084c1fb586f0022c44d70a1d4fd048f2

Directly run docker image to create a Container of redis.

--cap-add all : it will add all capabilities, no need for change config file

-p : it allow container map it port with host port

-d: Run in background, this args cause running image will create Container

Notify the process

cd hcontainer-tutorial
./docker-popcorn-notify 4927a9ad4109c aarch64

Checkpoint the Container on x86, create a checkpoint name as simple

docker checkpoint create 4927a9ad4109c simple

Recode checkpoint, and copy the recoded checkpoint to the ARM machine.

./scripts/recode.sh 4927a9ad4109c simple aarch64

scp -r /tmp/simple $target@arm_machine:~

ssh $target@arm_machine

On ARM machine, pull the hcontainer redis image and run it, then stop it and prepare for restore.

docker pull 123toorc/hcontainer-redis:hcontainer

# Instead, you also can use '$docker container create 0f548727d566' and alter in hostconfig file to add capabilities and config.v2.json to add port mapping, please have look of scripts/builder.sh

docker run --cap-add all -d -p 6379:6379 0f548727d566

->	10877d6d99969b4bdc0a4fc1dc144615cb1e0d1bbbb727324adc7538f473b394

# Stop the running container then we restore it.

docker container stop 10877d6d99969b4bdc0a4fc1dc144615cb1e0d1bbbb727324adc7538f473b394

copy the recoded checkpoint transfer from the x86 machine to the container's checkpoints sub-directory and restore the container

cp -r /tmp/simple /var/liv/docker/containers/10877d6d99969b4bdc0a4fc1dc144615cb1e0d1bbbb727324adc7538f473b394/checkpoints

docker container start --checkpoint simple 10877d6d99969

docker ps 

You can also use redis-cli to test it, before the migration insert some key-value and try to get the key-value pair after restore.

redis-cli -h <IP> -p <Port>