If your version of Dokku is pre 0.3.0 (check with
dokku version), we recommend a fresh install on a new server.
For any security related updates, please follow our Twitter account. As Dokku does not run any daemons, the security risk introduced by our software is minimal.
Your operating system may occasionally provide security updates. We recommend setting unattended upgrades for your operating system. Here are some helpful links:
Docker releases updates periodically to their engine. We recommend reading their release notes and upgrading accordingly. Please see the Docker documentation for more details.
Before upgrading, check the migration guides to get comfortable with new features and prepare your deployment to be upgraded.
If you'll be updating docker or the herokuish package simultaneously, it's recommended
that you stop all applications before upgrading and rebuild afterwards. This is not
required if the upgrade only impacts the
Why do we recommend stopping all apps?
docker: Containers may be randomly reset during the upgrade process, resulting in requests being sent to the wrong containers. Acknowledging and scheduling downtime thus becomes much more important.
herokuish: While not required, it may be useful to take advantage of the latest base image. Herokuish changes do not cause issues unless the base OS changes, which may happen in minor or major releases.
# for 0.22.0 and newer versions, use dokku ps:stop --all # for versions between 0.11.4 and 0.21.4, use dokku ps:stopall # for versions between 0.8.1 and 0.11.3, use dokku --quiet apps:list | xargs -L1 dokku ps:stop # for versions versions older than 0.8.1, use dokku --quiet apps | xargs -L1 dokku ps:stop
After upgrading, you should rebuild the applications to take advantage of any new buildpacks that were released:
dokku ps:rebuild --all
We provide a helpful binary called
dokku-update. This is a recommended package that:
This binary is available on Debian and RPM-based systems from our package repositories under the name
dokku-update. When installing from source,
this is available from a separate Github repository at dokku/dokku-update.
If Dokku was installed in a Debian or Ubuntu system, via
apt-get install dokku or
bootstrap.sh, you can upgrade with
# update your local apt cache sudo apt-get update -qq # update dokku and its dependencies sudo apt-get -qq -y --no-install-recommends install dokku herokuish sshcommand plugn gliderlabs-sigil dokku-update dokku-event-listener # or just upgrade every package: sudo apt-get upgrade
If you installed Dokku from source (less common), upgrade with:
cd ~/dokku git pull --tags origin master # continue to install from source sudo DOKKU_BRANCH=master make install # upgrade to debian package-based installation sudo make install
To upgrade Herokuish from source, upgrade with:
cd /tmp git clone https://github.com/gliderlabs/herokuish.git cd herokuish git pull origin master IMAGE_NAME=gliderlabs/herokuish BUILD_TAG=latest VERSION=master make -e build-in-docker