146 lines
3.8 KiB
Markdown
146 lines
3.8 KiB
Markdown
# Kopia
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###### guide-by-example
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WORK IN PROGRESS<br>
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WORK IN PROGRESS<br>
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WORK IN PROGRESS<br>
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# Purpose & Overview
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Backups.
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* [Official site](https://kopia.io/)
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* [Github](https://github.com/kopia/kopia)
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Kopia is an open source backup utility with basicly all modern features.</br>
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Cross-platform, deduplication, encryption, compression, multithreaded speed,
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cloud storage support, CLI and GUI versions, snapshots mounting,...
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Written in golang.
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In this setup kopia cli is installed directly on the host system.</br>
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A script is created that backs up the entire docker directory and /etc locally.</br>
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Systemd service and timer are used to run the backup periodicly.
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# Some aspects of Kopia
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* backup configuration is stored in a repository where backups will be stored<br>
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this includes global policy, that is global in sense of repo, not all of kopia
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* you connect and disconnect from a repository before working with it,<br>
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only one repository can be connected at time
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* currently to ignore some folders, one can create `CACHEDIR.TAG` with specific
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[content](https://bford.info/cachedir/) and set policy: `--ignore-cache-dirs true`
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* Maintence is automatic
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* ..
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# Files and directory structure
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```
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/home/
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│ └── ~/
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│ └── docker/
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│ ├── container-setup #2
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│ ├── container-setup #1
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│ ├── ...
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│
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/mnt/
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│ └── mirror/
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│ └── KOPIA/
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│ └── arch_docker_host/
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│
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/opt/
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└── kopia-backup-home-etc.sh
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```
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# The setup
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#### install kopia
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for arch linux, kopia is on AUR `yay kopia-bin`
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#### repo creation and policy
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use of sudo so that kopia has access everywhere<br>
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config files are therefore in `/root/config/kopia`
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- `sudo kopia policy get --global`
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- `sudo kopia policy list`
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- `sudo kopia policy set --global --ignore-cache-dirs true --keep-annual 1 --keep-monthly 6 --keep-weekly 4 --keep-daily 14 --keep-hourly 0 --keep-latest 14`
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- `mkdir -p /mnt/mirror/KOPIA/docker_host_kopia`</br>
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- `sudo kopia repository create filesystem --path /mnt/mirror/KOPIA/docker_host_kopia`<br>
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- `sudo kopia repository connect filesystem --path /mnt/mirror/KOPIA/docker_host_kopia`<br>
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- `sudo kopia repository status`
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- `sudo kopia snapshot create /home/spravca/docker /etc`<br>
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- `sudo kopia snapshot list`<br>
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- `sudo kopia mount k7e2b0a503edd7604ff61c68655cd5ad7 /mnt/tmp &`<br>
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- `sudo umount /mnt/tmp`<br>
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#### the backup script
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`/opt/kopia-backup-home-etc.sh`
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```
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#!/bin/bash
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#sudo kopia policy set --global --keep-annual 1 --keep-monthly 6 --keep-weekly 4 --keep-daily 14 --keep-hourly 0 --keep-latest 14
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REPOSITORY_PATH='/mnt/mirror/KOPIA/docker_host_kopia'
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BACKUP_THIS='/home /etc'
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export KOPIA_PASSWORD='aaa'
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kopia repository connect filesystem --path $REPOSITORY_PATH
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kopia snapshot create $BACKUP_THIS
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kopia repository disconnect
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```
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### Automatic execution using systemd
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# Accessing the backup files
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# Mounting using systemd
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* the name of mount and automount files MUST correspond with the path<br>
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instead of `/` a `-` is used, but otherwise it must be the mounting path in name
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* for mounting that does not fail on boot, and mounts the target only on request
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enable automount file, not mount file, so:<br>
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`sudo systemctl enable mnt-mirror.automount`
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`mnt-mirror.mount`
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```ini
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[Unit]
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Description=3TB truenas mirror mount
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[Mount]
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What=//10.0.19.11/Mirror
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Where=/mnt/mirror
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Type=cifs
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Options=rw,username=kopia,password=aaa,file_mode=0644,dir_mode=0755,uid=1000,gid=1000
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[Install]
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WantedBy=multi-user.target
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```
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`mnt-mirror.automount`
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```ini
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[Unit]
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Description=3TB truenas mirror mount
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[Automount]
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Where=/mnt/mirror
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[Install]
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WantedBy=multi-user.target
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```
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# Remote backup
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