docker问题汇总

docker问题汇总

1.利用dockerfile文件创建镜像时，遇到RUN命令卡住

解决办法：把后台正在运行的docker容器都停止掉。

2.ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running?

原因：docker服务没有启动。
解决办法：sudo systemctl start docker

3.ERROR: yaml.scanner.ScannerError: mapping values are not allowed here The Compose file './docker-com

原因：yml格式书写错误。
解决办法：‘-’号的左右两边都需要一个空格，‘:'号的右边也需要一个空格，下面附上一个yml文件作为参考：

version: '2'
services:
  zookeeper:
    image: wurstmeister/zookeeper
    volumes:
      - ./data:/data
    ports:
      - "2181:2181"

  kafka:
    image: wurstmeister/kafka
    ports:
      - "9092:9092"
    environment:
      KAFKA_ADVERTISED_HOST_NAME: 127.0.0.1
      KAFKA_MESSAGE_MAX_BYTES: 2000000
      KAFKA_CREATE_TOPICS: "Topic1:1:3,Topic2:1:1:compact"
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
    volumes:
      - ./kafka-logs:/kafka
      - /var/run/docker.sock:/var/run/docker.sock

  kafka-manager:
    image: sheepkiller/kafka-manager
    ports:
      - 9020:9000
    environment:
      ZK_HOSTS: zookeeper:2181