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Setting up Docker, Rancher, and Traefik with Monitoring Tools in a Secure Environment

This Cloud-Init script facilitates a robust deployment of Docker, Rancher, Traefik, and integrates Prometheus, Grafana, and Loki for comprehensive monitoring within an isolated environment, leveraging the ubuntu/jammy/cloud LXD image. Meticulous attention has been given to fortify the infrastructure, implementing strict access controls, minimal container permissions, and automated SSL provisioning via Traefik integrated with Cloudflare for seamless certificate renewal.

Requirements

Operational knowledge of LXD, Docker, Rancher, and Cloudflare.
Access to the ubuntu/jammy/cloud LXD image.
Additionally, refer to Monitoring Stack Gist for deploying the monitoring stack.

Linux Virtual Machines with Private Network on an Apple M1 Device

Background

The aim was to be able to:

Run multiple Linux VMs on an Apple M1/ARM device
Use Apple's HVF for native performance speeds
Configure VMs to allow network access to each other
Configure VMs to allow access to the internet
Not rely on custom modifications of software

Zimbra Letsencrypt SSL Renew

Zimbra Version: Release 8.6.0_GA_1153.RHEL7_64_20141215151110 RHEL7_64 FOSS edition

Based on Zimbra Article KB 22434 : https://wiki.zimbra.com/wiki/Installing_a_LetsEncrypt_SSL_Certificate

Let's Begin

Log on Zimbra user then stop proxy and mail box service for renew proccess.

su zimbra

	1) Prerequisite : Properly configured Hot / Warm Elasticsearch cluster with correct node attributes.

	2) Configure Metricbeat to point directly to Elasticsearch and run setup

	NOTE: When metricbeat setup is run, it will overwrite the ILM Policy and recreate the bootstrap index with that policy,
	this is often confusing. Running setup also creates all the dashboards, index templates etc. so it is very useful.
	As part of the template it will name the ILM policy and rollover_alias in this example metricbeat-7.4.0

	./metricbeat setup