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wordpress_borg_backup/note-to-self.txt
2019-12-23 17:08:27 +05:30

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# Create DB backup in the given location
# Do Backup of the WP files + logfiles + Db Backup files
# Compression? zlib?
# Pruning?
# Max size?
# Frequency?
# What needs to be excluded?
# Sync the backup to remote using Rclone
# How about backup filling up space?
# What if the server gets hacked - can he delete everything from remote location as well?
#!/bin/sh
# Features we want
## Accept the following
### backup_dir (MANDATORY)
### wordpress_location
### wordpress_log_location
### site_name
## Assume the following
### backup_dir -> ~/backups/site_name
### wordpress_location -> find it from nginx config
### For more than 1 nginx sites -> prompt which one to use
### backup all???
### include nginx config logs?
### site_name -> find it from nginx config -> or from wordops?
# https://stackoverflow.com/questions/32400933/how-can-i-list-all-vhosts-in-nginx
# sudo nginx -T | perl -ln0777e '$,=$\; s/^\s*#.*\n//mg; print grep !$u{$_}++ && !m/^_$/, map m/(\S+)/g, m/\bserver_name\s++(.*?)\s*;/sg'
# sudo nginx -T | grep "server_name " | sed 's/.*server_name \(.*\);/\1/'
# -> Check if it starts with # (i.e. - deactivated)
# -> Check if it has a corresponding (uncommented out) "root" in the same {} or any of the included files in that {}
## Do a borg init - if it is not NOT done on the backup_dir
### On init - show the key file on screen at the END (NOT on log)
## Log all output to backup_dir/logs folder
### Log rotate and delete if required
### If log_off been mentioned - send logs to /dev/null
## On ERROR -> output to backup_dir/logs/error
### Add it to system log as well - even if log_off
# For the README.md
## Ensure you have sudo
## If you have nginx and not providing the wordpress_location, wp_db_name, wp_db_username, wp_db_userpwd details - $ sudo nginx -t gives all OK
## Ensure you have enough space at the backup location
## If choosen to switch off log - check system error messages for "wp_backup_script_errors"
## DB backup is created and stored in tmp/wp_backup_script/site_name/db_bkp
### This is deleted after successful backup
## If you want to schedule it - put it in appropriate location
### Explain where - give links for more details
## Runs on low priority - so system resources are NOT overloaded
## Which compression we use
## Which directories are excluded
## What if you want to add some custom directories to this backups?
## How to restore - for a particular date?
## Point to rclone to sync these backups to remote locations
## Point to init linux hardening for hardening linux servers
## Point to WordOps for easier wordpress installations
## MUST have a passphrase for your existing backup
#### Logging
log requirements
- Log to file always
- Log to screen when specified
- For warning & error - log to STDERR
verbosity=3 # default to show warnings
readonly silent_lvl=0
readonly err_lvl=2
readonly wrn_lvl=3
readonly inf_lvl=4
# If this variable is not overriden later - logfile will be stored at below location
# /tmp/scriptname_date_timestamp_timezone.log
LOGFILE=/tmp/$(basename "$0")_"$(date '+%Y-%m-%d_%H:%M:%S_%:::z')".log
error() { log $err_lvl "ERROR: $1"; }
warn() { log $wrn_lvl "WARNING: $1"; }
inf() { log $inf_lvl "INFO: $1"; } # "info" is already a command
log() {
if [[ "$verbosity" -ge "$1" && "$verbosity" -ne 0 ]]; then
local datestring
# Date format -> 2019-12-23 14:54:25+05:30
readonly datestring="[$(date --rfc-3339=seconds)]:"
# Expand escaped characters, wrap at 70 chars, indent wrapped lines
echo -e "$datestring $2" | fold -w80 -s | sed '2~1s/^/ /'
fi
}
file_log() {
echo $1
}