docker 常见错误总结
docker common error
Non-existing image of running container
drm() { docker rm $(docker ps -q -a); }
dri() { docker rmi $(docker images -q); }
ddri(){ docker rmi $(docker images -f 'dangling=true' -q); }
can NOT expost port , can not access container from outside
The problem lies in the fact that I ran the container like this:
docker run -p 3306:3306 asyncfi/magento-mysql
This publishes the container's port to all interfaces of the host machine, which is definitely not what I was looking for at this time. To bind only to localhost, it was necessary to run the container as follows:
docker run -p 127.0.0.1:3306:3306 asyncfi/magento-mysql
Also the EXPOSE line in Dockerfile is not necessary as the "expose" mechanism is used to link containers.
and in my case , I had to use the same port both outside and inside the container
docker run -p 127.0.0.1:PORT_A:PORT_B asyncfi/magento-mysql
PORT_A and PORT_B must be the same
runing on OSX:
dengwei@dengweis-MacBook-Pro:~/docker/node-web-app$ docker info
Containers: 2
Images: 59
Server Version: 1.9.0
Storage Driver: aufs
Root Dir: /mnt/sda1/var/lib/docker/aufs
Backing Filesystem: extfs
Dirs: 64
Dirperm1 Supported: true
Execution Driver: native-0.2
Logging Driver: json-file
Kernel Version: 4.1.12-boot2docker
Operating System: Boot2Docker 1.9.0 (TCL 6.4); master : 16e4a2a - Tue Nov 3 19:49:22 UTC 2015
CPUs: 1
Total Memory: 1.956 GiB
Name: default
ID: E2AI:WJN3:75JM:65TC:XKGI:GWGN:X22Y:4F6J:5RDS:MXEL:62VH:V6I4
Debug mode (server): true
File Descriptors: 53
Goroutines: 126
System Time: 2016-01-18T14:04:31.465301917Z
EventsListeners: 1
Init SHA1:
Init Path: /usr/local/bin/docker
Docker Root Dir: /mnt/sda1/var/lib/docker
Labels:
provider=virtualbox
Turn out I should use docker container ip , which is 192.168.99.100 as default, besides you need to make sure the container is running.
Dockerfile
error in RUN
RUN mkdir -p /var/git/finance
RUN cd /var/git/finance
this will show no such file or folder error
seems RUN in run in parrel, rather in paraller
so we need to change it into this:
RUN mkdir -p /var/git/finance \
&& cd /var/git/finance \
network connection issue
$ docker run hello-world
Unable to find image 'hello-world:latest' locally
Pulling repository docker.io/library/hello-world
Network timed out while trying to connect to https://index.docker.io/v1/repositories/library/hello-world/images. You may want to check your internet connection or if you are behind a proxy.
bash-3.2$
//fix:
$ docker-machine restart default # Restart the environment
$ eval $(docker-machine env default) # Refresh your environment settings
Cannot connect to the Docker daemon. Is the docker daemon running on this host?
Linux:
From Create a Docker group section it is neccesary add user to docker group:
sudo usermod -aG docker $(whoami)
Log out and log back in. This ensures your user is running with the correct permissions.
In Mac OSX:
As Dayel Ostraco says is necessary to add environments variables:
$ docker-machine start # start virtual machine for docker
$ docker-machine env # it's helps to get environment variables
$ eval "$(docker-machine env default)" #set environment variables
The docker-machine start outputs the comments to guide the process.
docker top command error: TERM environment variable not set.
echo "export TERM=dumb" >> ~/.bashrc
docker pull 经常碰到网络超时问题
```
request canceled (Client.Timeout exceeded while awaiting headers)
```
右键点击桌面顶栏的 docker 图标,选择 Preferences ,在 Daemon 标签(Docker 17.03 之前版本为 Advanced 标签)下的 Registry mirrors 列表中加入下面的镜像地址:
http://18fb5052.m.daocloud.io
点击 Apply & Restart 按钮使设置生效。
docker run out of disk causing can't start docker container
error log:
```
Docker Install: Error running DeviceCreate (createPool) dm_task_run failed
```
solve by remove all images and container:
```
# kill -9 $(lsof -t -c docker)
# rm -rf /var/lib/docker/*
# reboot
```
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