On July 3, 2025, Portainer switched from version 2.27.8 to the new stable LTS (Long Time Support) 2.27.9 version. Portainer 2.27.9 added the –trusted-origins CLI option and TRUSTED_ORIGINS environment variable to specify (in a comma-separated list) the domain(s) used to access Portainer when it is behind a reverse proxy. Use this option if Portainer is behind a reverse proxy and you are getting “Origin invalid” errors.

🚀Portainer 2.27.9 Full Changelog

📋Install Portainer 2.27.9 On Your Synology NAS

📋How to Update Portainer to Version 2.27.9

📋How to Activate Dark Mode in Portainer 2.27.9

📋How to Change Portainer Logo With Your Own Logo in Portainer 2.27.9

📋How to Update Your Docker Containers Using Portainer 2.27.9

📋How to Clean Docker Using Portainer 2.27.9

📋How to Backup Portainer 2.27.9

📋How to Reset Portainer 2.27.9 Password

📋How to Increase Portainer 2.27.9 Session Lifetime

What is Portainer? Portainer is a really awesome web UI for Docker. Portainer is a lightweight management UI which allows you to easily manage your different Docker environments (Docker hosts or Swarm clusters). Portainer is meant to be as simple to deploy as it is to use thanks to its user-friendly interface.

This post was updated on Thursday / July 3rd, 2025 at 5:42 PM