MikroTik LTE modem configuration generator

Mon, 06 Jul 2026 00:00:00 +0000

AI Disclaimer Link to heading

This tool was generated using Claude. The outputs from the tool were manually verified against existing tooling, then tested on a physical device before deployment.

Where this project started Link to heading

The remote monitoring stack I manage utilises LTE modems which are connected to the device to be monitored.

Each modem must be manually configured and tested before being shipped to site. Having a standardised configuration provides consistent troubleshooting steps if a device doesn’t work as planned.

Monitor Restic backups with Healthchecks.io

Sat, 27 Jun 2026 00:00:00 +0000

This script is used on Linux hosts to complete additional offsite file backups as part of our larger DR plan. It has several features:

File backup and prune jobs
Integrated monitoring on Healthchecks.io, including start, success and failure messages.
Multiple attempts to complete both backups and prunes in case of failure.

#!/bin/bash
eval `ssh-agent -s`
ssh-add /root/.ssh/rem-bkups
export RESTIC_REPOSITORY="sftp:username@host:/data/directory"
export RESTIC_PASSWORD="12345"
HC="https://hc-ping.com/12345"

MAX_ATTEMPTS=3
RETRY_DELAY=60 # seconds between attempts

# Generic retry wrapper: retries the given command up to MAX_ATTEMPTS times
run_with_retries() {
 local label="$1"; shift
 local attempt=1
 while [ "$attempt" -le "$MAX_ATTEMPTS" ]; do
 echo "$label: attempt $attempt of $MAX_ATTEMPTS at $(date)"
 if "$@"; then
 echo "$label succeeded on attempt $attempt"
 return 0
 fi
 echo "$label failed on attempt $attempt"
 attempt=$((attempt + 1))
 [ "$attempt" -le "$MAX_ATTEMPTS" ] && sleep "$RETRY_DELAY"
 done
 echo "$label failed after $MAX_ATTEMPTS attempts"
 return 1
}

do_backup() {
 restic backup \
 /home \
 /etc \
 /opt \
 /var/www \
 --verbose
}

do_prune() {
 restic forget \
 --keep-last 1 \
 --keep-daily 2 \
 --keep-weekly 3 \
 --keep-monthly 4 \
 --prune
}

echo "Starting system backup at $(date)"
curl -fsS "$HC/start" >/dev/null 2>&1

# Only signal HC success if BOTH backup and prune succeed
if run_with_retries "Backup" do_backup && run_with_retries "Prune" do_prune; then
 echo "System backup completed at $(date)"
 curl -fsS "$HC" >/dev/null 2>&1
else
 echo "System backup or prune failed at $(date)"
 curl -fsS "$HC/fail" >/dev/null 2>&1
 exit 1
fi

Monitoring on XGA

MikroTik LTE modem configuration generator

AI Disclaimer Link to heading

Where this project started Link to heading

Monitor Restic backups with Healthchecks.io