docker使用遇到问题Got permission denied while trying to connect to the Docker daemon socket
解决办法 1
使用超级管理员权限,每次都要输入密码,麻烦。
bash
# 使用sudo docker ps或者sudo docker images
sudo docker
sudo docker images
解决办法 2
不需要每次都输入密码,一次设置,一劳永逸。
bash
# 把普通用户加入到docker组中
# 这里的普通用户是 wu ,组docker在安装docker的时候,就已经添加了,所以只需要执行两个操作即可:
sudo gpasswd -a $USER docker
newgrp docker
# 将 wu 用户加入docker组之后,发现使用docker ps或者docker images不会提示权限不足了。

‘ERROR: for nginx Cannot start service nginx’
报错内容
bash
lilbai@ecs-205380: docker-compose up -d
/home/lilbai/.local/lib/python3.6/site-packages/paramiko/transport.py:33: CryptographyDeprecationWarning: Python 3.6 is no longer supported by the Python core team. Therefore, support for it is deprecated in cryptography and will be removed in a future release.
from cryptography.hazmat.backends import default_backend
Starting nginx ...
Starting nginx ... error
ERROR: for nginx Cannot start service nginx: driver failed programming external connectivity on endpoint nginx (439e7ee354ecc5003b1bc1685d0008eee0e0adafc8aab4b86f20f14029ab3036): Error starting userland proxy: listen tcp4 0.0.0.0:80: bind: address already in use
ERROR: for nginx Cannot start service nginx: driver failed programming external connectivity on endpoint nginx (439e7ee354ecc5003b1bc1685d0008eee0e0adafc8aab4b86f20f14029ab3036): Error starting userland proxy: listen tcp4 0.0.0.0:80: bind: address already in use
ERROR: Encountered errors while bringing up the project.
分析问题
连接不到80端口,可能是80端口被占用了,如果是80端口被占用,直接kill就行
解决问题
进入超级管理员
bash
su
查询80端口占用情况
bash
root@ecs-205380# netstat -natp | grep 80
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 20215/nginx: master
tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN 29080/pure-ftpd (SE
tcp6 0 0 :::21 :::* LISTEN 29080/pure-ftpd (SE
kill占用80端口的程序
kill结束后再查看一次80端口是否还有其他占用
bash
root@ecs-205380# kill -9 20215
root@ecs-205380# netstat -natp | grep 80
tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN 29080/pure-ftpd (SE
tcp6 0 0 :::21 :::* LISTEN 29080/pure-ftpd (SE
构建Dockerfile出错
manifest for java:8 not found: manifest unknown: manifest unknown
解决方法
找不到镜像java:8,将java:8改为java:9就可以了

“docker build” requires exactly 1 argument. See ‘docker build --help’.
这是我的执行语句
bash
docker build -t docker/mydocker
这个语句其实是有错误的,在
最后面需要加上一个点

正确的写法
在后面家还是那个一个小点
bash
docker build -t docker/mydocker .
docker新建容器失败
报错内容1:docker: Error response from daemon: driver failed programming external connectivity on endpoint gitlab (xxxx): (iptables failed: iptables --wait -t nat -A DOCKER -p tcp -d 0/0 --dport 53222 -j DNAT --to-destination 172.17.0.2:80 ! -i docker0: iptables: No chain/target/match by that name. (exit status 1)).

报错内容2:docker: Error response from daemon: Conflict. The container name “/gitlab” is already in use by container “c23e27b22a90a0a050102510436c4c97ce0ce19d8a64807a43113f208d578adc”. You have to remove (or rename) that container to be able to reuse that name. See ‘docker run --help’.

尝试解决办法(失败了)
查看网卡是否出了问题

重启docker

解决办法:
查看容器ID
bash
docker ps -a
删除容器
bash
docker rm ID
重启docker
bash
systemctl restart docker
再次确定容器不存在了
bash
docker ps -a
创建容器
bash
docker run --detach \
--publish 5321:443 --publish 53222:80 --publish 5323:22 \
--name gitlab \
--restart always \
--volume /srv/gitlab/config:/etc/gitlab \
--volume /srv/gitlab/logs:/var/log/gitlab \
--volume /srv/gitlab/data:/var/opt/gitlab \
gitlab/gitlab-ce:latest

ERROR: failed to register layer: Error processing tar file(exit status 1): write /usr/bin/innochecksum: no space left on device
提示Docker外存空间不足,删除一些镜像即可,或者改变Docker的安装路径或者扩大Docker外存即可
我这里删除部分镜像即可解决问题。
bash
docker rmi 镜像ID
Command ‘doccker-compose’ not found, did you mean
报错内容
安装docker-compose一直失败,一开始是用pip3 install docker-compose安装,但是安装结束还是继续报错
bash
# 错误1:
sh: docker-compose: command not found
bash
# 错误2:
Command 'doccker-compose' not found, did you mean
解决方法
bash
sudo apt install docker-compose
查看docker-compose版本
bash
docker-compose --version

pull access denied for wechatbot, repository does not exist or may require ‘docker login’: denied: requested access to the resource is denied

我使用的是官方docker镜像仓库,可能导致错误的原因:
- 需要先登录docker(没有账号先去docker注册一个)
- 容器不存在
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