Specify container IP when Docker creates container

When Docker creates a container, it uses the bridge network by default, assigning its own IP and not allowing itself to be specified.

In the actual deployment, we need to specify the container IP, not allow its own IP, especially when building a cluster, fixed IP is required.

We can create our own bridge network: MyNet, when you create a container, specify the network as MyNet and specify the IP.

View Network mode

Docker Network LS

Create a new bridge network

Docker Network create--driver bridge--SUBNET=172.18.12.0/16--gateway=172.18.1.1 mynet

View network Information

Docker Network Inspect MyNet

Create a container and specify the container IP

Docker run-e tz= "Asia/shanghai"--privileged-itd-h hadoop01.com--name hadoop01--network=mynet--ip 172.18.12.1 CentOS /usr/sbin/init

Running the container

Docker exec-it Hadoop01/bin/bash

CentOS minimized installation without Ifconfig command, can be installed via Yum

Yum Install-y Net-tools

Installing the SSH Service

Yum Install-y openssh-server

Yum Install-y openssh-clients

Systemctl Start Sshd.service

New non-root user

Useradd Brock

passwd Brock

Through local client access (specify a port or configure a standalone IP by creating a container)

Docker run-e tz= "Asia/shanghai"-P 6001:22--privileged-itd-h hadoop01.com--name hadoop01--network=mynet--ip 172.18. 12.1 Centos/usr/sbin/init

Or

Route-p add 172.18.12.0 MASK 255.255.255.0 10.0.75.2

Specify container IP when Docker creates container