clear up confusion between ssh and borg key passwords
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Asif Bacchus
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README.md
81
README.md
@ -26,18 +26,22 @@ ## Contents <!-- omit in toc -->
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- [Why this script must be run as root](#why-this-script-must-be-run-as-root)
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- [Script parameters](#script-parameters)
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- [Optional parameters](#optional-parameters)
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- [Docker container STOP timeout before error: -1 _number_](#docker-container-stop-timeout-before-error--1-_number_)
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- [Docker container START timeout before error: -2 _number_](#docker-container-start-timeout-before-error--2-_number_)
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- [Path to 503 error page: -5 _/path/to/filename.html_](#path-to-503-error-page--5-_pathtofilenamehtml_)
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- [Path to borg details file: -b _/path/to/filename.file_](#path-to-borg-details-file--b-_pathtofilenamefile_)
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- [File name of docker-compose configuration file: -d _filename.file_](#file-name-of-docker-compose-configuration-file--d-_filenamefile_)
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- [Log file location: -l _/path/to/filename.file_](#log-file-location--l-_pathtofilenamefile_)
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- [File name of Mailcow master configuration file: -m _filename.file_](#file-name-of-mailcow-master-configuration-file--m-_filenamefile_)
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- [Docker container STOP timeout before error: -1 _number_](#docker-container-stop-timeout-before-error--1-number)
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- [Docker container START timeout before error: -2 _number_](#docker-container-start-timeout-before-error--2-number)
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- [Path to 503 error page: -5 _/path/to/filename.html_](#path-to-503-error-page--5-pathtofilenamehtml)
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- [Path to borg details file: -b _/path/to/filename.file_](#path-to-borg-details-file--b-pathtofilenamefile)
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- [File name of docker-compose configuration file: -d _filename.file_](#file-name-of-docker-compose-configuration-file--d-filenamefile)
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- [Log file location: -l _/path/to/filename.file_](#log-file-location--l-pathtofilenamefile)
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- [File name of Mailcow master configuration file: -m _filename.file_](#file-name-of-mailcow-master-configuration-file--m-filenamefile)
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- [Verbose output from borg: -v (no arguments)](#verbose-output-from-borg--v-no-arguments)
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- [Path to webroot: -w _/path/to/webroot/_](#path-to-webroot--w-_pathtowebroot_)
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- [Path to webroot: -w _/path/to/webroot/_](#path-to-webroot--w-pathtowebroot)
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- [Borg details file](#borg-details-file)
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- [Protect your borg details file](#protect-your-borg-details-file)
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- [borg specific entries (lines 1-4)](#borg-specific-entries-lines-1-4)
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- [Line 1: Path to borg base directory](#line-1-path-to-borg-base-directory)
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- [Line 2: Path to SSH key for remote server](#line-2-path-to-ssh-key-for-remote-server)
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- [Line 3: Connection string to remote repo](#line-3-connection-string-to-remote-repo)
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- [Line 4: Password for borg repo/repo key](#line-4-password-for-borg-reporepo-key)
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- [additional files/directories to backup](#additional-filesdirectories-to-backup)
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- [exclusion patterns](#exclusion-patterns)
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- [prune timeframe options](#prune-timeframe-options)
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@ -209,9 +213,9 @@ ## Borg details file
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order:
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1. path to borg base directory **(required)**
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2. path to ssh private key for repo **(required)**
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2. path to ssh private key for remote server **(required)**
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3. connection string to remote repo **(required)**
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4. password for ssh key/repo **(required)**
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4. password for borg repo/repo key **(required)**
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5. path to file listing additional files/directories to backup
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6. path to file containing borg-specific exclusion patterns
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7. prune timeframe options
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@ -234,10 +238,59 @@ ### borg specific entries (lines 1-4)
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If you need help with these options, then you should consult the borg
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documentation or search my blog at
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[https://mytechiethoughts.com](https://mytechiethoughts.com) for borg. This is
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especially true if you want to understand why an SSH key and passphrase are
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preferred and why just a passphrase on it's own presents problems automating
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borg backups.
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[https://mytechiethoughts.com](https://mytechiethoughts.com) for borg. Here's a
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very brief overview:
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#### Line 1: Path to borg base directory
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This is primary directory on your local system where your borg configuration is
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located, **NOT* the path to your borg binary. The base directory contains the
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borg configuration, cache, security files and keys.
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#### Line 2: Path to SSH key for remote server
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This is the SSH key used to connect to your remote (backup) server where your
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borg repo is located. **This is NOT your borg repo key!**
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> Please note: If you are planning on executing this script via cron or some
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> other form of automation, it is *highly recommended* that you use an SSH key
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> **without** a password! SSH is designed such that passwords cannot simply be
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> passed to it via environment variables, etc. so this is something not easily
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> automated by a script such as this for security reasons. As such, your
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> computer will sit and wait for you to enter the password and will NOT execute
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> the actual backup portion of the script until the SSH key password is provided.
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>
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> If you really want/need to use an SSH key password, you will have to look into
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> somethign like GNOME keyring or SSH-agent to provide a secure automated way to
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> provide that password to SSH and allow this script to continue.
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>
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> In practice, SSH keys without passwords are still quite safe since the key
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> must still be known in order to connect and most keys are quite long. In
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> addition, they key only connects to the remote server, your actual information
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> within the borg repository is still encrypted and secured with both a key and
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> password.
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#### Line 3: Connection string to remote repo
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This is the full server and path required to connect to your borg repo on the
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remote server. Very often it is the in the form of:
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```
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user@servername.tld:repo-name/
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```
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for rsync.net it is in the following form:
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```
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username@server-number.rsync.net:repo-name/
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```
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#### Line 4: Password for borg repo/repo key
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This is the password needed to access and decrypt your *borg repo*. Assuming
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you set up your borg repo using recommended practices, this will actually be the
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password for your *borg repo private key*. **This is NOT your SSH key
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password!**
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### additional files/directories to backup
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