What to do if the docker network segment conflicts

Linyb geek's way 2020-11-07 16:43:48
docker network segment conflicts


Preface

lately ssh Log in to the company's remote server , Suddenly I can't get in , After investigation, it was because there was a docker The network segment of the container conflicts with that of the company , Not going up leads to .

How to solve

docker The default segment is 172.17, Conflict with the company's network segment , So the solution is actually quite simple , Or change the company network segment , Or change docker Network segment , A normal person would choose to change docker Network segment

Solution

Scheme 1 : Don't change docker Network segment , Create a network segment that does not conflict with the company docker Subnet segment

docker network create --driver=bridge --subnet=192.161.0.0/16 monitor_net

Specify when running the container

docker run -it --name < Container name > ---network monitor_net < Mirror name 

stay docker-compose Similarly passed networks Appoint , The shape is as follows

version: '3'
networks:
monitor:
# Use existing networks
external:
name: monitor_net
services:
prometheus:
image: prom/prometheus
container_name: prometheus
hostname: prometheus
privileged: true
restart: always
volumes:
- /usr/local/src/config/prometheus.yml:/etc/prometheus/prometheus.yml
- /usr/local/src/config/node_down.yml:/etc/prometheus/node_down.yml
ports:
- "9091:9090"
networks:
- monitor
links:
- alertmanager
- node-exporter

Option two : modify docker Default segment

1、 stop it docker

systemctl stop docker

2、 Delete the original bridge

ip link del docker0 down

3、vim /etc/docker/daemon.json, Add the following form

"bip":"192.161.20.1/24"

without daemon.json file , The new

The contents of the document are as follows

{
"registry-mirrors": ["https://zq2cvqfe.mirror.aliyuncs.com"],
"insecure-registries":["192.168.1.30:5002"],
"bip":"192.161.20.1/24"
}

4、 restart docker service

systemctl restart docker

5、 adopt ifconfig see docker Whether the segment has changed

image.png

summary

install docker when , Remember to revise docker Default , To avoid conflict with the company's network segment

版权声明
本文为[Linyb geek's way]所创,转载请带上原文链接,感谢

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