This image runs
Chef Server 12. The
latest version is published as quay.io/3ofcoins/chef-server:latest. Version
tags are available; current one is quay.io/3ofcoins/chef-server:12.18.14.
Git repository containing the Dockerfile lives at https://github.com/3ofcoins/docker-chef-server/
PUBLIC_URL- should be configured to a full public URL of the endpoint (e.g.https://chef.example.com)OC_ID_ADMINISTRATORS- if set, it should be a comma-separated list of users that will be allowed to add oc_id applications
Ports 80 (HTTP) and 443 (HTTPS) are exposed.
/var/opt/opscode directory, that holds all Chef server data, is a
volume. Directories /var/log/opscode and /etc/opscode are linked
there as, respectively, log and etc.
If there is a file etc/chef-server-local.rb in this volume, it will
be read at the end of chef-server.rb and it can be used to customize
Chef Server's settings.
docker kill -s HUP $CONTAINER_IDwill runchef-server-ctl reconfiguredocker kill -s USR1 $CONTAINER_IDwill runchef-server-ctl status
First start will automatically run chef-server-ctl reconfigure. Subsequent starts will not run reconfigure, unless
file /var/opt/opscode/bootstrapped has been deleted or hostname has
changed (i.e. on upgrade). You can run reconfigure (e.g. after
editing etc/chef-server.rb) using docker-enter or by sending
SIGHUP to the container: docker kill -HUP $CONTAINER_ID.
Just kill the old container and start a new one using the same data
volume. The image will automatically run chef-server-ctl upgrade
when version of chef-server-core package changes. You will need to
run chef-server-ctl cleanup afterwards.
If the repository is lagging, to build a new image with new Chef
Server version, all you need to do is update the variables on top of
the install.sh script.
Chef Server's design makes it impossible to wrap it cleanly in a container - it will always be necessary to run custom commands. While some of the management commands may work with linked containers with varying amount of ugly hacks, it is simpler to have one way of interacting with the software that is closest to interacting with a Chef Server installed directly on host (and thus closest to supported usage).
This means you need Docker 1.3+ with docker exec feature, and run
chef-server-ctl commands like:
docker exec $CONTAINER_ID chef-server-ctl status
docker exec $CONTAINER_ID chef-server-ctl user-create …
docker exec $CONTAINER_ID chef-server-ctl org-create …
docker exec $CONTAINER_ID chef-server-ctl …
If you have Docker older than 1.3 and can't upgrade, you should be
able to get by with nsenter utility and
docker-enter script by
Jérôme Petazzoni on your Docker
host. The easiest way to install it is to run the installer Docker
image:
docker run --rm -v /usr/local/bin:/target jpetazzo/nsenter
Then, you can use the docker-enter script to run chef-server-ctl
commands:
docker-enter $CONTAINER_ID chef-server-ctl …
This container is not supposed to listen on a publically available port. It is very strongly recommended to use a proxy server, such as nginx, as a public endpoint.
Unfortunately, Chef's logic for figuring out the absolute URL of
various pieces (oc_id, bookshelf, erchef API, etc) for links and
redirects is twisted and fragile. There are chef-server.rb settings,
but some pieces insist on using the Host: header of the request, and
it doesn't seem possible to use plain HTTP endpoint and have the Chef
Server generate HTTPS redirects everywhere.
The main setting you need to configure is PUBLIC_URL environment
variable. It needs to contain full public URL, as seen by knife and
chef-client (e.g. PUBLIC_URL=https://chef-api.example.com/).
Then, you need to make sure that the proxy passes proper Host:
header to the Chef Server, and talks with the Chef Server on
the same protocol that the final endpoint will use (i.e. proxy that
listens on HTTPS would need to use Chef Server's self-signed HTTPS
endpoint; proxy that listens on plain HTTP would need to talk to HTTP
endpoint).
If you prefer to avoid overhead of encrypting the connection between
proxy and the Chef Server, it should be sufficient to rewrite the
Location: headers (proxy_redirect in nginx, ProxyPassReverse in
Apache). It works for me, but I can't guarantee you won't bump into
a wrong URL generated by the server.
A sample nginx configuration looks like this:
server {
listen 443 ssl;
server_name chef.example.com;
ssl_certificate /path/to/chef.example.com.pem;
ssl_certificate_key /path/to/chef.example.com.key;
client_max_body_size 4G;
location / {
proxy_pass http://127.0.0.1:5000;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-Proto https;
proxy_redirect default;
proxy_redirect http://chef.example.com https://chef.example.com;
}
}
$ docker exec chef-server chef-server-backup
Backup will be created in /var/opt/opscode/backup/latest, and all
previous backups will be in their own timestamped directories. Backups
will use hardlinks to share unchanged files. The backups will take
form of JSON files with user and organization details, and each
organization's chef repository dump generated with knife download.
There is no full restore script yet; you'll need to create orgs &
users based on JSON files, and then use knife upload to upload each
organization's data separately. The restore script is being worked on,
but some pieces can't be restored (in particular, users' passwords),
and other pieces seem tricky (in particular, ACLs).
Alternatively, one can take a binary backup of data volume (it is not possible to read anything from such backup without starting up whole Chef server, and it takes much more disk space, though):
docker stop chef-server- Archive
/var/opt/opscodevolume (delete thebootstrappedfile from the archive to forcechef-server-ctl reconfigurerun on the new container) docker start chef-server
Same thing works for upgrades: just reuse container, remembering to
remove the bootstrapped file. You may also need to remove the
symlinks in /var/opt/opscode/service and/or run chef-server-ctl upgrade via docker exec.
UNSUPPORTED. No idea how to handle this (especially that this is the point at which licensing issues start to occur). Most likely, a separate image based off this one would be necessary.
An alternative image is maintained at https://github.com/trueability/docker-chef-server / https://hub.docker.com/r/trueability/chef-server/ and it might be more frequently updated than this one.
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