After a while of getting acquainted with Docker, I have mastered the basic commands of Docker, so I rarely access Portainer to manage containers. Today, when I access it again, I see that Portainer has announced that there is a new version: A new version is available.
By the way, upgrading Portainer to the latest version, I always share the instructions on the blog. Probably will help many of you who are new to Docker.
How to update your Docker application to the latest version will depend on how you initialize the application: via the command
docker run or through Docker-Compose.
Update application initialized with Docker-Compose
With the current Portainer application, I initialize it using Docker-Compose
services: portainer: image: portainer/portainer-ce:alpine container_name: portainer command: -H unix:///var/run/docker.sock ports: - "9000:9000" volumes: - "/var/run/docker.sock:/var/run/docker.sock" - "portainer_data:/data" restart: always volumes: portainer_data:
To update to the latest version, first need to pull the latest Docker image to your machine with the following command. Note: need to access the directory containing the file
docker-compose.yml of the app before entering the command
Re-initialize the new container based on the downloaded image. I added the suffix
--remove-orphans to remove containers that are no longer in use.
docker-compose up -d --remove-orphans
Enter the following command to delete the old image that is no longer in use.
docker image prune
Visit Portainer again, the app has been updated to the latest version 2.14.2.
Update Application initialized with docker run
If you run the application directly through the command
docker run, the method will be slightly different. First, you need to pull the new image with the following command
docker pull portainer/portainer-ce:alpine
portainer/portainer-ce:alpine with the corresponding Docker image name of the application you need to update.
Check the ID of the active application with the command
According to the returned results, Portainer’s Container ID is a3ca0e0f360b
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES a3ca0e0f360b portainer/portainer-ce:alpine "/portainer -H unix:…" 2 days ago Up 30 hours 8000/tcp, 9443/tcp, 0.0.0.0:9000->9000/tcp, :::9000->9000/tcp portainer 5e963e0c4588 jc21/nginx-proxy-manager:latest "/init" 5 weeks ago Up 30 hours 0.0.0.0:80-81->80-81/tcp, :::80-81->80-81/tcp, 0.0.0.0:443->443/tcp, :::443->443/tcp nginxproxymanager_app_1 641c6af1efd7 guacamole/guacamole "/opt/guacamole/bin/…" 2 months ago Up 30 hours 0.0.0.0:8080->8080/tcp, :::8080->8080/tcp guacamole_compose 9869abf6ba12 guacamole/guacd "/bin/sh -c '/usr/lo…" 2 months ago Up 30 hours (healthy) 4822/tcp guacd_compose 5a0ceb014be9 postgres:13.4 "docker-entrypoint.s…" 2 months ago Up 30 hours 5432/tcp postgres_guacamole_compose
Suspend and delete running containers
sudo docker stop a3ca0e0f360b sudo docker rm a3ca0e0f360b
Re-initialize the new container for the application
sudo docker run --name=[container_name] [options] [docker_image]
With Portainer, the initialization command will be as follows
docker run -d -p 8000:8000 -p 9443:9443 --name portainer --restart=always -v /var/run/docker.sock:/var/run/docker.sock -v portainer_data:/data portainer/portainer-ce:alpine
It is done!
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