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https://github.com/aledbf/systemd-go
deis systemd scripts in go
https://github.com/aledbf/systemd-go
Last synced: about 2 months ago
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deis systemd scripts in go
- Host: GitHub
- URL: https://github.com/aledbf/systemd-go
- Owner: aledbf
- Created: 2014-10-24T20:46:52.000Z (about 10 years ago)
- Default Branch: master
- Last Pushed: 2015-05-07T20:24:31.000Z (over 9 years ago)
- Last Synced: 2024-10-26T15:19:36.593Z (3 months ago)
- Language: Go
- Size: 2.11 MB
- Stars: 4
- Watchers: 4
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
This is a work in progress.
===============
NOT READY TO USE!!!!
===============
Basically rewrite the current shell scripts in Go :)
This is just to improve the current output from the services and provide a way to customize the platform
from:
```console
[Service]
EnvironmentFile=/etc/environment
TimeoutStartSec=30m
ExecStartPre=/bin/sh -c "docker inspect deis-builder-data >/dev/null 2>&1 || docker run --name deis-builder-data -v /var/lib/docker ubuntu-debootstrap:14.04 /bin/true"
ExecStartPre=/bin/sh -c "IMAGE=`/run/deis/bin/get_image /deis/builder` && docker history $IMAGE >/dev/null || docker pull $IMAGE"
ExecStartPre=/bin/sh -c "docker inspect deis-builder >/dev/null && docker rm -f deis-builder || true"
ExecStart=/bin/sh -c "IMAGE=`/run/deis/bin/get_image /deis/builder` && docker run --name deis-builder --rm -p 2223:22 --volumes-from=deis-builder-data -e EXTERNAL_PORT=2223 -e HOST=$COREOS_PRIVATE_IPV4 --privileged $IMAGE"
ExecStartPost=/bin/sh -c "echo 'Waiting for builder on 2223/tcp...' && until echo 'dummy-value' | ncat $COREOS_PRIVATE_IPV4 2223 >/dev/null 2>&1; do sleep 1; done"
ExecStartPost=/bin/bash -c "nsenter --pid --uts --mount --ipc --net --target $(docker inspect --format='{{ .State.Pid }}' deis-builder) /usr/local/bin/push-images"
ExecStopPost=-/usr/bin/docker rm -f deis-builder
Restart=on-failure
RestartSec=5
```
to:
```console
[Service]
EnvironmentFile=/etc/environment
TimeoutStartSec=30m
ExecStartPre=/opt/bin/launch-data-container -name=deis-builder
ExecStartPre=/opt/bin/check-image -image=/deis/builder
ExecStartPre=/opt/bin/remove-running-container -name=deis-builder
ExecStart=/opt/bin/launch-container -image=/deis/builder -name=deis-builder
ExecStartPost=/opt/bin/wait-for-port -port=2223/tcp -text="Waiting for builder on 2223/tcp..."
ExecStartPost=/bin/bash -c "nsenter --pid --uts --mount --ipc --net --target $(docker inspect --format='{{ .State.Pid }}' deis-builder) /usr/local/bin/push-images"
ExecStopPost=/opt/bin/stop-container -name=deis-builder
Restart=on-failure
RestartSec=5
```
Every ExecStartPre line is just a small go app doing the same thing than before.
Why different apps? To keep it simple, 1 app -> 1 task
In ExecStart:
```console
ExecStart=/opt/bin/launch-container -image=/deis/builder -name=deis-builder
````
**Objectives:**
* Encapsulate the details
* Avoid shell mess
* use etcd to customize the service:
```
/deis/systemd/deis-builder/
variables
volumes
ports
```
doing this is possible to do other things:
```
/deis/systemd/app/defaults/
variables
volumes
/deis/systemd/app/example-php/
variables
````
*In variables is possible to common custom variables without touching deis-controller python template*
* swallow the output.
Show just what is necessary, things like `Unable to find image ubuntu-debootstrap:14.04 locally` are useless to new users.
* show more details
Provide a way to get more details (something like in https://github.com/deis/deis/pull/2203) using /deis/debugMode to indicate this
* Add /deis/platform/useNodeNames (-h %H)
Use the real node hostname inside the container (and not a generated one)
### TODO:
- [ ] check-image
- [ ] launch-data-container
- [ ] remove-running-container
- [ ] stop-container
- [x] wait-for-port
- [ ] start-component
- [ ] read /deis/platform/useNodeNames
- [ ] **tests**