Update DOCS.md [ci skip]
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Brad Rydzewski
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DOCS.md
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DOCS.md
@ -167,164 +167,3 @@ storage_driver
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build_args
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build_args
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: custom arguments passed to docker build
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: custom arguments passed to docker build
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Publish an image with multiple tags:
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```yaml
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pipeline:
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docker:
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image: plugins/docker
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username: kevinbacon
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password: pa55word
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email: kevin.bacon@mail.com
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repo: foo/bar
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tags:
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- latest
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- 1.0.1
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- "1.0"
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```
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Build an image with additional arguments:
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```yaml
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pipeline:
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docker:
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image: plugins/docker
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username: kevinbacon
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password: pa55word
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email: kevin.bacon@mail.com
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repo: foo/bar
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build_args:
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- HTTP_PROXY=http://yourproxy.com
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```
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## Using a custom registry
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Please note that when using a custom registry (other than DockerHub) you will need to provide the registry URL and you will need to use a fully qualified repository name. For example:
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```yaml
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pipeline:
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docker:
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image: plugins/docker
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registry: http://registry.company.com
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repo: registry.company.com/my/image
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```
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## Caching
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The Drone build environment is, by default, ephemeral meaning that you layers
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are not saved between builds. There are two methods for caching your layers.
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### Graph directory caching
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This is the preferred method when using the `overlay` or `aufs` storage
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drivers. Just use Drone's caching feature to backup and restore the directory
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`/drone/docker`, as shown in the following example:
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```yaml
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pipeline:
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sftp_cache:
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image: plugins/sftp-cache
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restore: true
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mount: /drone/docker
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docker:
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image: plugins/docker
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storage_path: /drone/docker
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username: kevinbacon
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password: pa55word
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email: kevin.bacon@mail.com
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repo: foo/bar
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tags:
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- latest
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- "1.0.1"
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sftp_cache:
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image: plugins/sftp-cache
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rebuild: true
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mount: /drone/docker
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```
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## Troubleshooting
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For detailed output you can set the `DOCKER_LAUNCH_DEBUG` environment variable
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in your plugin configuration. This starts Docker with verbose logging enabled.
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```yaml
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pipeline:
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docker:
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environment:
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- DOCKER_LAUNCH_DEBUG=true
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```
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## Known Issues
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There are known issues when attempting to run this plugin on CentOS, RedHat,
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and Linux installations that do not have a supported storage driver installed.
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You can check by running `docker info | grep 'Storage Driver:'` on your host
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machine. If the storage driver is not `aufs` or `overlay` you will need to
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re-configure your host machine.
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This error occurs when trying to use the default `aufs` storage Driver but aufs
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is not installed:
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```
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level=fatal msg="Error starting daemon: error initializing graphdriver: driver not supported
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```
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This error occurs when trying to use the `overlay` storage Driver but overlay
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is not installed:
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```
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level=error msg="'overlay' not found as a supported filesystem on this host.
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Please ensure kernel is new enough and has overlay support loaded."
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level=fatal msg="Error starting daemon: error initializing graphdriver: driver not supported"
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```
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This error occurs when using CentOS or RedHat which default to the
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`devicemapper` storage driver:
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```
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level=error msg="There are no more loopback devices available."
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level=fatal msg="Error starting daemon: error initializing graphdriver: loopback mounting failed"
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Cannot connect to the Docker daemon. Is 'docker -d' running on this host?
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```
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The above issue can be resolved by setting `storage_driver: vfs` in the
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`.drone.yml` file. This may work, but will have very poor performance as
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discussed [here](https://github.com/rancher/docker-from-scratch/issues/20).
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This error occurs when using Debian wheezy or jessie and cgroups memory
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features are not configured at the kernel level:
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```
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time="2015-12-17T08:06:57Z" level=debug msg="Mounting none /sys/fs/cgroup/blkio cgroup blkio"
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time="2015-12-17T08:06:57Z" level=debug msg="Mounting none /sys/fs/cgroup/perf_event cgroup perf_event"
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time="2015-12-17T08:06:57Z" level=debug msg="Mounting none /sys/fs/cgroup/cpuset cgroup cpuset"
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time="2015-12-17T08:06:57Z" level=debug msg="Mounting none /sys/fs/cgroup/cpu,cpuacct cgroup cpu,cpuacct"
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time="2015-12-17T08:06:57Z" level=debug msg="Creating /sys/fs/cgroup/memory"
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time="2015-12-17T08:06:57Z" level=debug msg="Mounting none /sys/fs/cgroup/memory cgroup memory"
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time="2015-12-17T08:06:57Z" level=fatal msg="no such file or directory"
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```
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The above issue can be resolved by editing your `grub.cfg` and adding
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`cgroup_enable=memory swapaccount=1` to you kernel image. This change should
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look like that afterwards:
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```
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menuentry 'Debian GNU/Linux, avec Linux 3.16.0-0.bpo.4-amd64' --class debian --class gnu-linux --class gnu --class os {
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load_video
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insmod gzio
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insmod raid
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insmod mdraid09
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insmod part_msdos
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insmod part_msdos
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insmod part_msdos
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insmod ext2
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set root='(mduuid/dab6cffad124a3d7a4d2adc226fd5302)'
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search --no-floppy --fs-uuid --set=root a4085974-c507-4993-a9ed-bdc17e375cad
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echo 'Chargement de Linux 3.16.0-0.bpo.4-amd64 ...'
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linux /boot/vmlinuz-3.16.0-0.bpo.4-amd64 root=/dev/md1 ro cgroup_enable=memory swapaccount=1 quiet
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echo 'Chargement du disque mémoire initial ...'
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initrd /boot/initrd.img-3.16.0-0.bpo.4-amd64
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```
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