Basic use of Docker containers (i)

Environment:

Host: physical machine equipped with centos7.2 I p:192.168.122.1 shutdown firewall selinux status is disabled

Software:docker-engine-1.10.3-1.el7.centos.x86_64.rpm

docker-engine-selinux-1.10.3-1.el7.centos.noarch.rpm

Operation:

Install the software yum install docker-engine-1.10.3-1.el7.centos.x86_64.rpm

docker-engine-selinux-1.10.3-1.el7.centos.noarch.rpm

Start systemctl start Docker

View Docker information Docker version

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Import docker image Docker load-i Centos.tar

View Docker image Docker images

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Running the container

1> Docker run-it--name test RHEL7 bash Interactive run in foreground bash

##### opens the container and enters the interactive interface:ctrl+d closes the container directly and exits the interactive interface ctrl+p+q exit the interactive interface without closing the container

2> Docker run-d--name test1 nginx-d means running in the background

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3> Docker run-d--name nginx-v index.html:/usr/share/ngin/html/index.html-p 8080:80 nginx Create container -v mount the local index.html file to the container - p Port map maps the container's ports to the physical machine's 8080

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You can access the container 's Nginx by accessing the 8080 Port of the physical machine or the IP of the container

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4> Docker Create--name file-v/tmp/data1:/data1-v/tmp/data2:/data2 Ubuntu Bash Add volume container volume container can be called on a new container to make a volume Same mount of container

5> Docker run--rm--volumes-from file-v/tmp/backup:/backup ubuntu tar cf/backup/back.tar data1 creates a container that Row data1 package to /backup/ Delete container --volumes-from call file The container is mounted so that the new container also has the same Mount

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6> Docker run-it--name Ubuntu--net host Ubuntu Bash runs a container --net indicates that the specified container uses the network as host Such a container will use the same network information as the physical machine to open the same network port but there will be a scramble for resources

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7> Docker run-it--name vm1--net none Ubuntu bash runs a container, network information is empty convenient custom configuration

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The network configuration for the container vm1 is as follows:

IP link Add name veth0 type Veth Peer name veth1 Create container virtual network interface

Brctl addif Docker0 Veth0 will be a section to the local Docker0 on

IP link set Dev veth0 up

IP link set dev veth1 up interface End status

Docker Inspect-f ' {. State.pid}} ' vm1 filters out the container vm1 Pid is 5794

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IP netns Add test Add a network namespace Test

IP netns list viewing lists

Ln-s/proc/5794/ns/net/var/run/netns/5794 do soft connection

IP link Set veth1 netns 5794 add the virtual NIC interface veth1 to the 5794

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In the container through the IP addr Show you can see that a device has been added veth1

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IP netns exec 5794 IP addr add 172.17.0.10/24 dev veth1 set container on physical machine VM1 network address is 172.17.0.10/24

IP netns exec 5794 IP link set veth1 up enable device veth1

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View in Container

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Container IP settings succeeded

Docker common Operations:

Docker PS View the currently running container

Docker ps-a View all containers (including containers for running)

Docker ps-q View container ID

Docker Stop/start test Close or open container test Here you can use either the container name or the container ID .

Docker logs Test View container's logs

Docker attach test into container

Docker RM Test Delete Container

Docker stop ' Docker Ps-aq ' stops all containers

Docker RM ' Docker Ps-aq ' removes all container containers before removing it needs to stop first

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Basic use of Docker containers (i)