This guide explained how we can create and manage docker volumes and networks.Docker can use different interfaces to access virtualization features of the Linux kernel. Conclusionĭocker volumes and networks are the tools used to persist data and establish connectivity between the docker containers. Keep a backup of the data before removing docker volumes. NOTE: Removing the docker volume will erase all the data stored in the volume.
In order to remove all the unused docker volumes, use the following command. In order to remove the docker volumes, use the following command. Stopping or deleting a docker container does not remove the docker volume. "Mountpoint": "/var/lib/docker/volumes/vol-1/_data", It will return a JSON output like this.snip. To display the detailed information about docker volume, use the following command.
It will display all the docker volumes along with their name and driver. In order to list all the available docker volumes, use the following command. The above command will create a docker container and mount the docker volume to the /world directory of the container. $ docker run -itd -volume=:/world busybox Use the -volume option while creating a new docker container to attach the docker volume. Connect a docker volume to a containerĪfter creating a docker volume, it can be attached to the docker container. It will create a docker volume named vol-1. Docker volume name can be specified in the command to create a docker volume with a name. It will create a docker volume without a name. To create a docker volume, simply use the following command. In order to remove all the unused docker networks, use the following command. So, the container has to be removed first before removing the network. If a docker container is connected to the network, the network can not be removed. Use the following command to remove an unused docker network. $ docker network disconnect Īlso, while creating a new docker container, it can be attached to an existing network using the -network option. Similarly, the following command will disconnect the docker container from a network. Use the following command to connect a running docker container with a docker network. It will display a JSON output like this.snip.Ĭonnect and disconnect a docker container from the networkĪ running docker container can be attached and detached from a docker network. In order to get detailed information on a docker network, use the following command. It will list all the networks along with their ID, name, scope, and driver. Use the following command to list all the available docker networks. Additionally, the -ip-range option can be used to assign an IP range from the subnet to the network, and the -gateway option will define the gateway of the network. The -subnet option is used to specify the custom subnet range. When a network is created, the docker engine creates a new subnet for the network. It will create a docker network eth1 with an overlay network driver. $ docker network create -driver overlay eth1 Note: For the overlay network to work, the host should be a swarm manager in a swarm network.
DOCKER NETWORK EXPLAINED DRIVER
Specify a network driver while creating a docker network using the -driver option.
The above command will create an eth0 network with a default bridge network driver. macvlan: this allows containers to grab a unique IP address from the physical LAN network with DHCP.ĭocker network can be created by using the following command.overlay: used to enable communication between docker containers on different hosts (swarm nodes).null: disables communication between docker containers.host: uses host system ports for communication.bridge: used to enable communication between docker containers on the same host internally.
DOCKER NETWORK EXPLAINED DRIVERS
Following is the list of docker network drivers with use cases. There are different types of docker network drivers for different purposes. Docker installed on your Ubuntu instance.You have shell (SSH) access to your VPS.A fresh Webdock cloud Ubuntu instance (18.04 or later).