Docker intranet builds DNS and uses domain name access instead of ip:port operation

For example, if I have a Jenkins server in my intranet, I have to remember its IP and port number if I want to access it. I can remember one service, but if I have more than one, I may need a domain name that is easy to remember to record some intranet services.

Step 1: Prepare the Docker environment

Step 2: Download the image

docker pull andyshinn/dnsmasq:2.75

Step 3: Run dnsmasq

#Background start docker run -d -p 53:53/tcp -p 53:53/udp --cap-add=NET_ADMIN --name dns-server andyshinn/dnsmasq:2.75

#Enter the container docker exec -it dns-server /bin/sh

#Create proxy file-add external dns
vi /etc/resolv.dnsmasq

nameserver 114.114.114.114
nameserver 8.8.8.8

#Create a new local resolution rule configuration-add local resolution rule#Note: The ip here should be filled in with the ip of the host where docker is located
vi /etc/dnsmasqhosts
.168.3.54 jenkins.ean.com test1.ean.com
.168.3.54 redis.ean.com

#Append the two files we just configured #vi /etc/dnsmasq.conf
resolv-file=/etc/resolv.dnsmasq
addn-hosts=/etc/dnsmasqhosts

#Exit the container & restart exit

docker restart dns-server

Step 4: Set up nginx

Be sure to install nginx as a domain name reverse proxy on 3.54

server{
 listen 80;
 server_name jenkins.ean.com;
 proxy_set_header Host $host;
 location /{
  proxy_pass http://192.168.3.54:8060;
 }
}

Additional knowledge: docker pull private warehouse image

1. Docker pull private warehouse error

The http server gave http response to the https client

Due to different Docker versions, you can try the following two methods: (configuration on the client)

(1) Method 1: By configuring /etc/docekr/daemon.json

vim /etc/docker/daemon.json
{
 "insecure-registry": ["172.16.12.196:5000"] (warehouse address)
}

(2) Method 2: By configuring /etc/sysconfig/docker

vim /etc/sysconfig/docker

INSECURE_REGISTRY = "--insecure-registry 172.16.12.196:5000"

The above article about setting up DNS in Docker intranet and using domain name access instead of ip:port is all I have to share with you. I hope it can give you a reference. I also hope that you will support 123WORDPRESS.COM.