---
title:
description:
date: 2023-04-25
lang: zh-tw
tags:
- 樹莓派
- Linux
- docker
---
# 樹莓派筆記- Q&A:固定容器ip

## 問題
在設定 docker-ufw 後
容器若沒固定ip的話
重啟後容器ip就會變
容器就會連不上線

## 解決
一開始創建網路時，指定subnet,gateway,ip-range

docker network create \
  --driver=bridge \
  --subnet=172.18.0.0/16 \
  --gateway=172.18.0.1 \
  --ip-range=172.18.1.0/24 \
  caddy_net

> DHCP只發172.19.1.0/24這裡面的
> 固定ip從172.19.0.1/24

並在創建容器時，為需要的容器指定ip

version: '3.3'
networks:
  default:
    name: ${DOCKER_MY_NETWORK}
    external: true
services:
  portainer:
    image: 6053537/portainer-ce:latest
    container_name: portainer
    restart: unless-stopped
    ports:
      - 9000:9000
    volumes:
      #讀取Host主機時間
      - /etc/localtime:/etc/localtime:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro
      - ${HOME_PATH}/portainer:/data
    env_file: 
      - .env
    networks:
      default:
        ipv4_address: 172.18.0.2

## Ref
* https://www.yiibai.com/docker/network_create.html
* https://stackoverflow.com/questions/39493490/provide-static-ip-to-docker-containers-via-docker-compose