码头安装的卷GID不匹配导致错误:拨号unix /var/run/docker.sock:连接:权限被拒绝
问题描述:
使用官方jenkins图像,我已经安装了docker和docker-compose并将jenkins添加到docker组(GID 999在容器中)。码头安装的卷GID不匹配导致错误:拨号unix /var/run/docker.sock:连接:权限被拒绝
之后,我分享了主机的/var/run/docker.sock,让jenkins创建“兄弟”容器。它发生的原始文件有GID 134,并且此GID被挂载。我收到以下错误:
demo_1 | docker: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.32/containers/create : dial unix /var/run/docker.sock: connect: permission denied. demo_1 | See 'docker run --help'.
有关如何解决此问题的任何想法?
我的最小(和尚未优化)Dockerfile是:
FROM jenkins/jenkins:lts
USER root
RUN apt-get update && apt-get install -y apt-transport-https \
ca-certificates \
curl \
gnupg2 \
software-properties-common
RUN curl -fsSL https://download.docker.com/linux/$(. /etc/os-release; echo "$ID")/gpg | apt-key add -
RUN apt-key fingerprint 0EBFCD88
RUN add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/$(. /etc/os-release; echo "$ID") \
$(lsb_release -cs) \
stable"
RUN apt-get update
RUN apt-get install -y docker-ce docker-compose
RUN usermod -aG docker jenkins
USER jenkins
RUN newgrp docker
我还创建了一个搬运工-撰写测试它:
version: '2'
services:
demo:
build: .
ports:
- 8080:8080
- 50000:50000
volumes:
- /var/run/docker.sock:/var/run/docker.sock
command: >
/bin/sh -c "
set -e
groups
docker -v
docker-compose -v
ls -ln /var/run/docker.sock
id jenkins
docker run hello-world
"
的输出是:
demo_1 | jenkins staff docker
demo_1 | Docker version 17.09.0-ce, build afdb6d4
demo_1 | docker-compose version 1.8.0, build unknown
demo_1 | srw-rw---- 1 0 134 0 Sep 30 07:36 /var/run/docker.sock
demo_1 | uid=1000(jenkins) gid=1000(jenkins) groups=1000(jenkins),50(staff),999(docker)
demo_1 | docker: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.32/containers/create: dial unix /var/run/docker.sock: connect: permission denied.
demo_1 | See 'docker run --help'.
答
我给这个问题一个肮脏的修复,所以我让这个问题打开,看看是否有更好的问题出现。
由于/var/run/docker.sock文件是由根,它有相同的UID所拥有的,我加詹金斯sudoers文件的列表,而无需输入密码:
RUN adduser jenkins sudo
RUN echo "jenkins ALL=NOPASSWD: ALL" >> /etc/sudoers
这解决了问题。我不喜欢它,但它有效。