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Signing a CLA for a project covers all code contributions to that project. You may, however, need to sign additional CLAs if you choose to contribute to other projects that require CLAs.
Why cla/linuxfoundation check on my PR for Kubernetes repo is not marked as passed after signing CLA?
Since February 2022 The Linux Foundation is in the process of migrating from CLA v1 (cla/linuxfoundation check) to EasyCLA v2 (EasyCLA check) for Kubernetes repositories, during this migration cla/linuxfoundation check is not being updated even when the users have properly signed the CLA, if the PR has the label "cncf-cla: yes" it means the authorization for the user has been granted. Note that cla/linuxfoundation check is not a requirement nor a blocker for merging the PR once all the required labels have been included.
Once the migration has been completed cla/linuxfoundation check will be removed.