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README.md
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README.md
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@ -17,6 +17,25 @@ ansible-galaxy install -r requirements.yml
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ansible-galaxy role install -r requirements.yml
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```
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## Secrets
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Generally try to avoid secrets (e.g. use SSH keys instead of passwords).
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Because secrets are nonetheless needed sometimes, we use [SOPS](https://github.com/getsops/sops) to securely store secrets in this repository.
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SOPS encrypts secrets according to "creation rules" which are defined in the `.sops.yaml`.
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Generally all secrets get encrypted for all GPG-keys of all members of the infrastructure team.
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Ansible then has access to the secrets with the help of the [`community.sops.sops` vars plugin](https://docs.ansible.com/ansible/latest/collections/community/sops/docsite/guide.html#working-with-encrypted-variables), which is configured in this repository.
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A local Ansible run then uses the locally available GPG-key to decrypt the secrets.
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For a tutorial on how to set up SOPS for a new host, see [SOPS: New Host](./docs/guides/sops-new-host.md).
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### Updating SOPS files after swapping out a GPG key
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When a GPG key expires, it is necessary to update the config in `.sops.yaml` and then re-encrypt all files with the updated list of keys. Run this command. The will take a considerable amount of time (minutes).
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```
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find inventories -name "*.sops.*" | xargs sops updatekeys --yes
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```
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## Playbook nur für einzelne Hosts ausführen
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Ein paar der Hosts haben den selben Namen, was es etwas schwieriger macht, das Playbook nur für einen der Hosts auszuführen, z. B. `public-reverse-proxy`. Die Kombination aus `--inventory` und `--limit` führt zum Erfolg:
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@ -1,27 +0,0 @@
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---
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title: Secrets
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---
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# Secrets
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Generally one should try to avoid secrets (e.g. using SSH keys instead of passwords).
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However, since one still needs to work with secrets, we use [SOPS](https://github.com/getsops/sops) to securely store them in our repository. The [`community.sops.sops` vars plugin](https://docs.ansible.com/ansible/latest/collections/community/sops/docsite/guide.html#working-with-encrypted-variables) is then used to access them in Ansible.
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All secrets are stored in the inventories in files ending with `.sops.yaml` to provide the secrets contents as variables for hosts and groups.
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Accompanying creation rules are defined in the [`.sops.yaml`](https://git.hamburg.ccc.de/CCCHH/ansible-infra/src/branch/main/.sops.yaml).
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When running Ansible locally, then your GPG key is used for accessing the secrets.
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Hosts on the other hand, when running Ansible against themselves using ansible-pull, use a configured [age](https://github.com/FiloSottile/age) key to be able to access the secrets relevant to them.
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## GPG Keys
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The secrets in this repository are encrypted against the GPG public keys of all Infra-Team members as defined in [infra-secrets](https://git.hamburg.ccc.de/CCCHH/infra-secrets).
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In order to edit encrypted files, you need all the GPG public keys imported into your GPG Keychain. You should be able to find the necessary public keys in the [infra-secrets repo](https://git.hamburg.ccc.de/CCCHH/infra-secrets) as well.
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## Guides
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See the following pages for guidance on how to use SOPS:
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- [SOPS: New Host](../guides/sops-new-host.md)
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- [SOPS: Storing Secrets](../guides/sops-storing-secrets.md)
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- [SOPS: GPG-Key Replacement](../guides/sops-gpg-key-replacement.md)
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18
docs/concepts-and-configurations/sops.md
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18
docs/concepts-and-configurations/sops.md
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@ -0,0 +1,18 @@
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---
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title: SOPS
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---
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# SOPS
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We're using [SOPS](https://github.com/getsops/sops) for secret management together with the `community.sops.sops` vars plugin for Ansible.
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## GPG Keys
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In order to edit encrypted files, you need all the GPG public keys imported into your GPG Keychain. You should be able to find the necessary public keys in [infra-secrets](https://git.hamburg.ccc.de/CCCHH/infra-secrets).
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## Guides
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See the following pages for guidance on how to use SOPS:
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- [SOPS: New Host](../guides/sops-new-host.md)
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- [SOPS: Storing Secrets](../guides/sops-storing-secrets.md)
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@ -1,13 +0,0 @@
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---
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title: "SOPS: GPG-Key Replacement"
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summary: How to Replace an Expired GPG-Key
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---
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# SOPS: GPG-Key Replacement
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- When a GPG key expires, it is necessary to update the config in the [`.sops.yaml`](https://git.hamburg.ccc.de/CCCHH/ansible-infra/src/branch/main/.sops.yaml) and then re-encrypt all files with the updated list of keys.
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- If no new key is available, simply remove the key and re-encrypt all files to keep the repository in a working state. Whenever the relevant member provides a new key, add it again and re-encrypt for it again.
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- The re-encryption can be achieved by running the following command (which could take a considerable amount of time):
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```bash
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find inventories -name "*.sops.*" | xargs sops updatekeys --yes
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```
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