NEW: Get project updates onTwitterandMastodon

DCO Sign Off

All contributors to the project retain copyright to their work, but must only submit work which they have the rights to submit.

We require all contributors to acknowledge that they have the rights to the code they're contributing by signing their commits in git using a "DCO Sign Off". Note that this is different to "commit signing" using something like PGP or gitsign!

Any copyright notices in a cert-manager repo should specify the authors as "The cert-manager Authors".

To sign your work, pass the --signoff option to git commit or git rebase:

# Sign off a commit as you're making it
git commit --signoff -m"my commit"
# Add a signoff to the last commit you made
git commit --amend --signoff
# Rebase your branch against master and sign off every commit in your branch
git rebase --signoff master

This will add a line similar to the following at the end of your commit:

Signed-off-by: Joe Bloggs <>

By signing off a commit you're stating that you certify the following:

Developer Certificate of Origin
Version 1.1
Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
1 Letterman Drive
Suite D4700
San Francisco, CA, 94129
Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.
Developer's Certificate of Origin 1.1
By making a contribution to this project, I certify that:
(a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or
(b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or
(c) The contribution was provided directly to me by some other
person who certified (a), (b) or (c) and I have not modified
(d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.

That statement is taken from