ubuntu#

March 14, 2026
in linux, network, ubuntu
7 min read

Windows 11 WSL2 DNS and OpenVPN Split Tunnel

On modern Windows 11 + WSL 2, the reliable VPN-friendly DNS path is WSL DNS tunneling. If you want Linux tools inside WSL to follow the same DNS policy as Windows apps, keep /etc/resolv.conf auto-generated and let the Windows DNS Client make the routing and suffix decisions.

This post focuses on the current Windows 11 + WSL 2 model, not the older manual resolv.conf workaround. It also shows how to keep OpenVPN in split-tunnel mode while preserving internal DNS resolution in both Windows and WSL.

October 27, 2019
in python, ubuntu
2 min read

Install Python3 on Ubuntu

A quick tutorial for installing Python from its official source on Ubuntu with sqlite3 support.

October 10, 2018
in gitlab, cicd, docker, migration, ubuntu
4 min read

Migrate Gitlab in docker

This post will walk you through the steps to migrate Gitlab from one docker container to another. The steps need you to know how to install a new Gitlab container and how to backup and restore Gitlab container, because the migration is just a restoration of a backup to another container.

October 3, 2018
in gitlab, cicd, docker, ubuntu
2 min read

Update Gitlab in docker

Gitlab has several methods to update to newer version depending on the type of the original installation and the Gitlab version. This post will show you the way for docker version of Gitlab, which is the simplest among others.

September 24, 2018
in gitlab, cicd, docker, backup, ubuntu
7 min read

Backup and restore Gitlab in docker

Gitlab hosts everything about the code including the docs and the pipeline data, etc. It's crucial to back it up. You can also use restore to migrate the Gitlab to another server. This post will show you how to backup and restore the Gitlab-CE docker version.

September 16, 2018
in gitlab, cicd, certificate, ubuntu
6 min read

Setup HTTPS for Gitlab

Gitlab-CE default installation goes with HTTPS disable. We need to generate a SSL certificate, and bind it to the HTTPS of Gitlab-CE.

September 6, 2018
in gitlab, cicd, docker, ubuntu
3 min read

Install Gitlab-CE in Docker on Ubuntu

Gitlab-CE (Community Edition) is a completely free and powerful web-based Git-repository manager with wiki, issue-tracking and CI/CD pipeline features, using an open-source license, developed by GitLab Inc. There're already many much better docs on the net, I've never worked with Docker and Linux before, so I wrote this post to save my way to install the Gitlab docker version on Ubuntu, the post is more or less for personal purpose.