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Commit f9e5a30d authored by Kamil Trzcinski's avatar Kamil Trzcinski
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Update docker guide and add docker-compose.yml

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app:
image: gitlab/gitlab-ce:latest
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*.md
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FROM ubuntu:14.04
MAINTAINER Sytse Sijbrandij
# Install required packages
RUN apt-get update -q \
&& DEBIAN_FRONTEND=noninteractive apt-get install -yq --no-install-recommends \
ca-certificates \
openssh-server \
wget \
apt-transport-https \
vim \
nano
# Download & Install GitLab
# If you run GitLab Enterprise Edition point it to a location where you have downloaded it.
RUN echo "deb https://packages.gitlab.com/gitlab/gitlab-ce/ubuntu/ `lsb_release -cs` main" > /etc/apt/sources.list.d/gitlab_gitlab-ce.list
RUN wget -q -O - https://packages.gitlab.com/gpg.key | apt-key add -
RUN apt-get update && apt-get install -yq --no-install-recommends gitlab-ce
# Manage SSHD through runit
RUN mkdir -p /opt/gitlab/sv/sshd/supervise \
&& mkfifo /opt/gitlab/sv/sshd/supervise/ok \
&& printf "#!/bin/sh\nexec 2>&1\numask 077\nexec /usr/sbin/sshd -D" > /opt/gitlab/sv/sshd/run \
&& chmod a+x /opt/gitlab/sv/sshd/run \
&& ln -s /opt/gitlab/sv/sshd /opt/gitlab/service \
&& mkdir -p /var/run/sshd
# Disabling use DNS in ssh since it tends to slow connecting
RUN echo "UseDNS no" >> /etc/ssh/sshd_config
# Prepare default configuration
RUN ( \
echo "" && \
echo "# Docker options" && \
echo "# Prevent Postgres from trying to allocate 25% of total memory" && \
echo "postgresql['shared_buffers'] = '1MB'" ) >> /etc/gitlab/gitlab.rb && \
mkdir -p /assets/ && \
cp /etc/gitlab/gitlab.rb /assets/gitlab.rb
# Expose web & ssh
EXPOSE 443 80 22
# Define data volumes
VOLUME ["/etc/gitlab", "/var/opt/gitlab", "/var/log/gitlab"]
# Copy assets
COPY assets/wrapper /usr/local/bin/
# Wrapper to handle signal, trigger runit and reconfigure GitLab
CMD ["/usr/local/bin/wrapper"]
docker/README.md
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# GitLab Docker images
The GitLab docker image is [available on Docker Hub](https://registry.hub.docker.com/u/gitlab/gitlab-ce/).
## After starting a container
After starting a container you can go to [http://localhost:8080/](http://localhost:8080/) or [http://192.168.59.103:8080/](http://192.168.59.103:8080/) if you use boot2docker.
It might take a while before the docker container is responding to queries.
You can check the status with something like `sudo docker logs -f gitlab`.
You can login to the web interface with username `root` and password `5iveL!fe`.
Next time, you can just use docker start and stop to run the container.
## Run the image
Run the image:
```bash
sudo docker run --detach \
--publish 8443:443 --publish 8080:80 --publish 2222:22 \
--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
```
This will download and start GitLab CE container and publish ports needed to access SSH, HTTP and HTTPS.
All GitLab data will be stored as subdirectories of `/srv/gitlab/`.
The container will automatically `restart` after system reboot.
After this you can login to the web interface as explained above in 'After starting a container'.
## Where is the data stored?
The GitLab container uses host mounted volumes to store persistent data:
- `/srv/gitlab/data` mounted as `/var/opt/gitlab` in the container is used for storing *application data*
- `/srv/gitlab/logs` mounted as `/var/log/gitlab` in the container is used for storing *logs*
- `/srv/gitlab/config` mounted as `/etc/gitlab` in the container is used for storing *configuration*
You can fine tune these directories to meet your requirements.
### Configure GitLab
This container uses the official Omnibus GitLab distribution, so all configuration is done in the unique configuration file `/etc/gitlab/gitlab.rb`.
To access GitLab configuration, you can start an bash in a new the context of running container, you will be able to browse all directories and use your favorite text editor:
```bash
sudo docker exec -it gitlab /bin/bash
```
You can also edit just `/etc/gitlab/gitlab.rb`:
```bash
sudo docker exec -it gitlab vi /etc/gitlab/gitlab.rb
```
**You should set the `external_url` to point to a valid URL.**
**You may also be interesting in [Enabling HTTPS](https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/doc/settings/nginx.md#enable-https).**
**To receive e-mails from GitLab you have to configure the [SMTP settings](https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/doc/settings/smtp.md),
because Docker image doesn't have a SMTP server.**
**Note** that GitLab will reconfigure itself **at each container start.** You will need to restart the container to reconfigure your GitLab:
```bash
sudo docker restart gitlab
```
For more options for configuring the container please check [Omnibus GitLab documentation](https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/README.md#configuration).
## Diagnose potential problems
Read container logs:
```bash
sudo docker logs gitlab
```
Enter running container:
```bash
sudo docker exec -it gitlab /bin/bash
```
From within container you can administrer GitLab container as you would normally administer Omnibus installation: https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/README.md.
### Upgrade GitLab to newer version
To upgrade GitLab to new version you have to do:
1. pull new image,
```bash
sudo docker stop gitlab
```
1. stop running container,
```bash
sudo docker rm gitlab
```
1. remove existing container,
```bash
sudo docker pull gitlab/gitlab-ce:latest
```
1. create the container once again with previously specified options.
```bash
sudo docker run --detach \
--publish 8443:443 --publish 8080:80 --publish 2222:22 \
--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
```
On the first run GitLab will reconfigure and update itself.
### Run GitLab CE on public IP address
You can make Docker to use your IP address and forward all traffic to the GitLab CE container.
You can do that by modifying the `--publish` ([Binding container ports to the host](https://docs.docker.com/articles/networking/#binding-ports)):
> --publish=[] : Publish a container᾿s port or a range of ports to the host format: ip:hostPort:containerPort | ip::containerPort | hostPort:containerPort | containerPort
To expose GitLab CE on IP 1.1.1.1:
```bash
sudo docker run --detach \
--publish 1.1.1.1:443:443 --publish 1.1.1.1:80:80 --publish 1.1.1.1:22:22 \
--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
```
You can then access GitLab instance at http://1.1.1.1/ and https://1.1.1.1/.
### Build the image
This guide will also let you know how to build docker image yourself.
Please run the command from the GitLab repo root directory.
People using boot2docker should run all the commands without sudo.
```bash
sudo docker build --tag gitlab/gitlab-ce:latest docker/
```
### Publish the image to Dockerhub
- Ensure the containers are running
- Login to Dockerhub with `sudo docker login`
```bash
sudo docker login
sudo docker push gitlab/gitlab-ce:latest
```
## Troubleshooting
Please see the [troubleshooting](troubleshooting.md) file in this directory.
Note: We use `fig.yml` to have compatibility with fig and because docker-compose also supports it.
Our docker image runs chef at every start to generate GitLab configuration.
* The official GitLab Community Edition Docker image is [available on Docker Hub](https://registry.hub.docker.com/u/gitlab/gitlab-ce/).
* The official GitLab Enterprise Edition Docker image is [available on Docker Hub](https://registry.hub.docker.com/u/gitlab/gitlab-ce/).
* The complete usage guide can be found in [Using GitLab Docker images](http://doc.gitlab.com/omnibus/docker/)
* The Dockerfile used for building public images is in [Omnibus Repository](https://gitlab.com/gitlab-org/omnibus-gitlab/tree/master/docker)
* Check the guide for [creating Omnibus-based Docker Image](http://doc.gitlab.com/omnibus/build/README.html#Build-Docker-image)
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#!/bin/bash
function sigterm_handler() {
echo "SIGTERM signal received, try to gracefully shutdown all services..."
gitlab-ctl stop
}
trap "sigterm_handler; exit" TERM
function entrypoint() {
/opt/gitlab/embedded/bin/runsvdir-start &
gitlab-ctl reconfigure # will also start everything
gitlab-ctl tail # tail all logs
}
if [[ ! -e /etc/gitlab/gitlab.rb ]]; then
cp /assets/gitlab.rb /etc/gitlab/gitlab.rb
chmod 0600 /etc/gitlab/gitlab.rb
fi
entrypoint
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app:
build: .
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{
"id": "/gitlab",
"ports": [0,0],
"cpus": 2,
"mem": 2048.0,
"disk": 10240.0,
"container": {
"type": "DOCKER",
"docker": {
"network": "HOST",
"image": "gitlab/gitlab-ce:latest"
},
"volumes": [
{
"containerPath": "/etc/gitlab",
"hostPath": "/var/data/etc/gitlab",
"mode": "RW"
},
{
"containerPath": "/var/opt/gitlab",
"hostPath": "/var/data/opt/gitlab",
"mode": "RW"
},
{
"containerPath": "/var/log/gitlab",
"hostPath": "/var/data/log/gitlab",
"mode": "RW"
}
]
}
}
\ No newline at end of file
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# Troubleshooting
This is to troubleshoot https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/245
But it might contain useful commands for other cases as well.
The configuration to add the postgres log in vim is:
postgresql['log_directory'] = '/var/log/gitlab/postgresql'
# Commands
```bash
sudo docker build --tag gitlab/gitlab-ce:latest docker/
sudo docker rm -f gitlab
sudo docker exec -it gitlab vim /etc/gitlab/gitlab.rb
sudo docker exec gitlab tail -f /var/log/gitlab/reconfigure.log
sudo docker exec gitlab tail -f /var/log/gitlab/postgresql/current
sudo docker exec gitlab cat /var/opt/gitlab/postgresql/data/postgresql.conf | grep shared_buffers
sudo docker exec gitlab cat /etc/gitlab/gitlab.rb
```
# Interactively
```bash
# First start a GitLab container without starting GitLab
# This is almost the same as starting the GitLab container except:
# - we run interactively (-t -i)
# - we define TERM=linux because it allows to use arrow keys in vi (!!!)
# - we choose another startup command (bash)
sudo docker run --ti \
-e TERM=linux
--publish 80443:443 --publish 8080:80 --publish 2222:22 \
--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 \
bash
# Configure GitLab to redirect PostgreSQL logs
echo "postgresql['log_directory'] = '/var/log/gitlab/postgresql'" >> /etc/gitlab/gitlab.rb
# Prevent Postgres from allocating 25% of total memory
echo "postgresql['shared_buffers'] = '1MB'" >> /etc/gitlab/gitlab.rb
# You can now start GitLab manually from Bash (in the background)
# Maybe the command below is still missing something to run in the background
gitlab-ctl reconfigure > /var/log/gitlab/reconfigure.log & /opt/gitlab/embedded/bin/runsvdir-start &
# Inspect PostgreSQL config
cat /var/opt/gitlab/postgresql/data/postgresql.conf | grep shared_buffers
# And tail the logs (PostgreSQL log may not exist immediately)
tail -f /var/log/gitlab/reconfigure.log /var/log/gitlab/postgresql/current
# And get the memory
cat /proc/meminfo
head /proc/sys/kernel/shmmax /proc/sys/kernel/shmall
free -m
```
# Cleanup
Remove ALL docker containers and images (also non GitLab ones).
**Be careful, because the `-v` also removes volumes attached to the images.**
```bash
# Remove all containers with attached volumes
docker rm -v $(docker ps -a -q)
# Remove all images
docker rmi $(docker images -q)
# Remove GitLab persistent data
rm -rf /srv/gitlab
```
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