Ansible Role: restic ======================= > **Beta:** This role is in beta status. [![license](https://raw.githubusercontent.com/roles-ansible/ansible_role_restic/main/.github/license.svg)](https://github.com/roles-ansible/ansible_role_restic/blob/main/LICENSE) [![Ansible Galaxy](https://raw.githubusercontent.com/roles-ansible/ansible_role_restic/main/.github/galaxy.svg)](https://galaxy.ansible.com/do1jlr/restic) Description ------------- [Restic](https://github.com/restic/restic) is a versatile Go based backup solution which supports multiple backends, deduplication and incremental backups. This role installs restic on a client, configures the backup repositories and optionally sets systemd timer or cronjobs to run the backups. Additionally, it will set up executable scripts to run a backup manually. > This Project borrowed heavily from the > [donat-b/ansible-restic](https://github.com/donat-b/ansible-restic) and > the [https://github.com/arillso/ansible.restic](https://github.com/arillso/ansible.restic) > ansible role. We try to make this role more easy to understand and modern by using systemd timer, > /etc/crontab to define backup paths, more absolute paths and less options. (not tested for S3 Storage or Windows...) ### Backup Scripts This role will create a backup script and a file with credentials usable with the `source` command on linux for each backup in the `restic_script_dir`. These executable scripts can be used to manually trigger a backup action, but are also used for automated backups if you have set `restic_create_schedule` variable to true. Make sure to not change the files manually, as this can interfere with your backups quite a bit. on Linux, if you want to take a manual snapshot, you can run the backup like this: ```bash $ /path/to/backup/script/backup-example.sh ``` by default, such a snapshot will be given the tag `manual`, so you can distinguish them from automatically created snapshots. You can also append more tags by simply appending them: ```bash $ /path/to/backup/script/backup-example.sh --tag deployment ``` ### CRON / Scheduled Tasks In order to make use of defined backups, they can be automatically setup as scheduled tasks. You have to be aware of the fact that (on linux systems at least) you need to have administrator permissions for configuring such an action. If you cannot use the automatic creation of the tasks, you can still make use of the generated scripts. If you are for example on a shared hosting server and can define a cronjob via a webinterface, simply add each backup file to be executed. Make sure to prefix the command with `CRON=true` to imply that the snapshot was created via a scheduled task: ```bash CRON=true /path/to/backup/script/backup-example.sh ``` ## Installation There are multiple ways to install the role. Either clone or download it directly from the [github repository](https://github.com/roles-ansible/ansible_role_restic.git). Or Install it via [ansible galaxy](https://galaxy.ansible.com/do1jlr/restic): ```bash ansible-galaxy install roles-ansible.restic ``` ## Requirements * bzip2 ## Role Variables | Name | Default | Description | |-------------------------------|---------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------| | `restic_url` | `undefined` | The URL to download restic from. Use this variable to overwrite the default | | `restic_version` | `'0.15.1'` | The version of Restic to install | | `restic_download_path` | `'/opt/restic'` | Download location for the restic binary | | `restic_install_path` | `'/usr/local/bin'` | Install location for the restic binary | | `restic_script_dir` | `'/opt/restic'` | Location of the generated backup scripts | | `restic_backup_script_shell` | `sh` | Shell to use for run of backup script | | `restic_log_dir` | `'{{ restic_script_dir }}/log'` | Location of the logs of the backup scripts | | `restic_repos` | `{}` | A dictionary of repositories where snapshots are stored. *(More Info: [Repos](#Repos))* | | `restic_backups` | `{}` (or `[]`) | A list of dictionaries specifying the files and directories to be backed up *(More Infos: [Backups](#Backups))* | | `restic_create_schedule` | `false` | Should we schedule each backup? Either via cronjob or via systemd timer. | | `restic_backup_now` | `false` | Whether or not the backup script should be run immediately | | `restic_schedule_type` | `systemd` | Here you can define if we create a ``cronjob`` or a ``systemd`` timer. If it fails to create a systemd timer, a cronjob will be created. | | `restic_dir_owner` | `'{{ansible_user}}'` | The owner of all created dirs | | `restic_dir_group` | `'{{ansible_user}}'` | The group of all created dirs | | `restic_no_log` | `true` | Set to false to see hidden ansible logs | | `restic_do_not_cleanup_cron ` | `false` | We changed the cron location and clean up the old one. You can skip the cleanup here | | `restic__cache_config` | `false` | Configure custom cache directory | | `restic__cache_dir` | `'~/.cache/restic'` | Define custom cache directory | | `submodules_versioncheck` | `false` | If you set this variable to true, the role will run a [simple versionscheck](tasks/versioncheck.yml) to prevent running older versions of this role. | | `restic__limit_cpu_usage` | `false` | Should CPU usage be limited? | | `restic__max_cpus` | `1` | Maximum number of CPUs that can be used simultaneously | ### Repos Restic stores data in repositories. You have to specify at least one repository to be able to use this role. A repository can be local or remote (see the official [documentation](https://restic.readthedocs.io/en/stable/030_preparing_a_new_repo.html)). > **Using an SFTP repository** > > For using an SFTP backend, the user needs passwordless access to the host. > Please make sure to distribute ssh keys accordingly, as this is outside of > the scope of this role. Available variables: | Name | Required | Description | | ----------------------- |:--------:| ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `location` | yes | The location of the Backend. Currently, [Local](https://restic.readthedocs.io/en/stable/030_preparing_a_new_repo.html#local), [SFTP](https://restic.readthedocs.io/en/stable/030_preparing_a_new_repo.html#sftp), [S3](https://restic.readthedocs.io/en/stable/030_preparing_a_new_repo.html#amazon-s3), [Azure Blob](https://restic.readthedocs.io/en/stable/030_preparing_a_new_repo.html#microsoft-azure-blob-storage) and [B2](https://restic.readthedocs.io/en/stable/030_preparing_a_new_repo.html#backblaze-b2) are supported | | `password` | yes | The password used to secure this repository | | `init` | no | Describes if the repository should be initialized or not. Use `false` if you are backuping to an already existing repo. | Example: ```yaml restic_repos: local: location: /srv/restic-repo password: securepassword0 init: true remote: location: rest:https://restic_rest_server.example.com:8000/restic-repo/ password: securepassword1 init: true sftp: location: sftp:user@host:/srv/restic-repo password: securepassword2 init: true aws: location: s3:s3.amazonaws.com/bucket_name password: securepassword3 init: true aws_access_key: accesskey aws_secret_access_key: secretaccesskey aws_default_region: eu-west-1 azure: location: azure:container:/ password: securepassword4 init: true azure_account_name: storageaccountname # Only one of the following are required azure_account_key: somekey azure_account_sas: sasurl # Optional azure_endpoint_suffix: core.windows.net b2: location: b2:bucketname:path/to/repo password: securepassword5 init: true b2_account_id: accountid b2_account_key: accountkey ``` ### Backups A backup specifies a directory or file to be backuped. A backup is written to a Repository defined in `restic_repos`. Available variables: | Name | Required (Default) | Description | | ------------------ |:-----------------------------:| ------------ | | `name` | yes | The name of this backup. Used together with pruning and scheduling and needs to be unique. | | `repo` | yes | The name of the repository to backup to. | | `src` | yes (unless `stdin` == `true`) | The source directory or file | | `stdin` | no | Is this backup created from a [stdin](https://restic.readthedocs.io/en/stable/040_backup.html#reading-data-from-stdin)? | | `stdin_cmd` | no (yes if `stdin` == `true`) | The command to produce the stdin. | | `stdin_filename` | no | The filename used in the repository. | | `pre_backup_cmd` | no | A command to run before backup, typically used to dump databases to disk | | `past_backup_cmd` | no | A command to run after backup, typically used to cleanup database dumps on disk | | `tags` | no | Array of default tags | | `keep_last` | no | If set, only keeps the last n snapshots. | | `keep_hourly` | no | If set, only keeps the last n hourly snapshots. | | `keep_daily` | no | If set, only keeps the last n daily snapshots. | | `keep_weekly ` | no | If set, only keeps the last n weekly snapshots. | | `keep_monthly` | no | If set, only keeps the last n monthly snapshots. | | `keep_yearly ` | no | If set, only keeps the last n yearly snapshots. | | `keep_within` | no | If set, only keeps snapshots in this time period. | | `keep_tag` | no | If set, keep snapshots with this tags. Make sure to specify a list. | | `prune` | no (`false`) | If `true`, the `restic forget` command in the script has the [`--prune` option](https://restic.readthedocs.io/en/stable/060_forget.html#removing-backup-snapshots) appended. | | `forget_extra_args` | no | Extra arguments to pass to the `restic forget` command. | | `scheduled` | no (`false`) | If `restic_create_schedule` is set to `true`, this backup is scheduled and tries to create a systemd timer unit. If it fails, it is creating a cronjob. | | `schedule_oncalendar` | ``'*-*-* 02:00:00'`` | The time for the systemd timer. Please notice the randomDelaySec option. By Default the backup is done every night at 2 am (+0-4h). But only if scheduled is true. | | `schedule_minute` | no (`*`) | Minute when the job is run. ( 0-59, *, */2, etc ) | | `schedule_hour` | no (`2`) | Hour when the job is run. ( 0-23, *, */2, etc ) | | `schedule_weekday` | no (`*`) | Weekday when the job is run. ( 0-6 for Sunday-Saturday, *, etc ) | | `schedule_month` | no (`*`) | Month when the job is run. ( 1-12, *, */2, etc ) | | `exclude` | no (`{}`) | Allows you to specify files to exclude. See [Exclude](#exclude) for reference. | | `disable_logging` | no | Optionally disable logging | | `log_to_journald` | no | Optionally switch logging to journald with the name of the backup job as the tag | | `mail_on_error` | no | Optionally send a mail if the backupjob will fail *(mailx is required)* | | `mail_address` | if `mail_on_error` is true | The mail address to receive mails if you enabled ``mail_on_error``. | | `monitoring_call` | no | A command that will be called if the backup is *successful*. Useful for heartbeat monitoring systems that warn when no heartbeat is received. Use the full command, you need to run. Example: `curl https://monitoring.example.com/api/push/E9Wzm4lJ2O?status=up&msg=OK&ping=` | | `niceness` | no | If set, runs any scheduled backup with given [niceness-value](https://en.wikipedia.org/wiki/Nice_(Unix)). On Linux -20 is highest priority, 0 default and 19 is lowest priority. 10 is a common low priority assigned to backup routines on production systems. | Example: ```yaml restic_backups: data: name: data repo: remote src: /path/to/data scheduled: true schedule_oncalendar: '*-*-* 01:00:00' database: name: database repo: remote stdin: true stdin_cmd: pg_dump -Ubackup db_name stdin_filename: db_name_dump.sql scheduled: true schedule_oncalendar: '*-*-* 01:30:00' niceness: 10 all_databases: name: all_databases repo: remote src: /var/dumped_data scheduled: true schedule_oncalendar: '*-*-* 02:00:00' pre_backup_cmd: cd /var/dumped_data && mariadb -N -e 'show databases' | while read dbname; do mariadb-dump --complete-insert --routines --triggers --single-transaction "$dbname" > "$dbname".sql; done ``` > You can also specify restic_backups as an array, which is a legacy feature and > might be deprecated in the future. currently, the name key is used for > naming the access and backup files #### Exclude the `exclude` key on a backup allows you to specify multiple files to exclude or files to look for filenames to be excluded. You can specify the following keys: ```yaml exclude: exclude_caches: true exclude: - /path/to/file iexclude: - /path/to/file exclude_file: - /path/to/file exclude_if_present: - /path/to/file ``` Please refer to the use of the specific keys to the [documentation](https://restic.readthedocs.io/en/latest/040_backup.html#excluding-files). ## Dependencies This role does not have any other ansible role as dependency. ## Example Playbook ```yml - name: backup your homefolders to /mnt/backup everyday night hosts: localhost roles: - {role: do1jlr.restic, tags: restic} vars: restic_create_schedule: true restic_repos: local: location: '/mnt/backup' password: 'ChangM3' init: true restic_backups: home: name: home repo: local src: /home/ scheduled: true schedule_oncalendar: '*-*-* 01:00:00' ``` ## License This project is under the MIT License. See the [LICENSE](LICENSE) file for the full license text.