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Tag: Ubuntu

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11
JUN

Run Linux Desktop experience in Docker container

This article provides an in-depth analysis of the key software package dependencies required to run a Linux desktop environment within a Docker container. It begins by identifying `gnome-shell` as a core component, noting that its dependencies include specific configurations such as the Ubuntu wallpaper. The article then clearly distinguishes between the roles of `gnome-core` and `ubuntu-desktop`, explaining that Ubuntu installs the latter by default rather than the former, and lists core application dependencies, including the file manager, terminal, and settings center. Additionally, it highlights Ubuntu-specific GNOME Shell extensions, such as `ubuntu-dock` for the taskbar, application indicator support, and desktop icon management tools. Finally, it compares the dependency differences between `ubuntu-desktop-minimal` and the standard `ubuntu-desktop`. The former provides a basic environment for minimal installations, while the latter adds more standard components on top of that foundation. By mapping out these dependency chains, readers can clearly understand how to build a fully functional yet lightweight Linux desktop environment in Docker, enabling convenient testing and experience of the desktop system without the need for a local installation.

Views 976
Docker Gnome Linux Remote Management Ubuntu desktop
29
FEB

Ubuntu 22.04 Network Diagnostic Handbook

This article introduces a complete process for troubleshooting unknown network traffic and bandwidth usage issues in an Ubuntu system. First, use `ip link show` to identify the network interface to be monitored. Then, utilize tools such as `dstat`, `iftop`, and `nload` to monitor overall network traffic and bandwidth usage on specific interfaces in real time. To pinpoint the source of resource consumption, the article recommends using `nethogs` to view traffic by process. It also notes that when a process ID appears as unknown (such as processes inside Docker containers), you should switch to using `tcpdump` to capture and analyze specific network packets. Next, use the `ss` command to check the occupancy status of specific ports, and combine it with the `ps` command to confirm the corresponding process ID and the location of the executable file. Finally, for identified anomalous IP addresses, the article guides you to use `iptables` and `ip6tables` commands to block inbound and outbound traffic. It particularly emphasizes that for IPv6 addresses, since attackers can easily change their addresses, it is recommended to block the entire subnet to enhance defense, thereby helping users effectively diagnose and resolve abnormal network bandwidth issues.

Views 2,099
Linux Netplan Network NetworkManager Networkd Ubuntu
08
FEB

Setup a Ubuntu apt mirror server

Ubuntu Mirror Why do this? I have many Ubuntu servers in my own data center at home. They need to update software packages every week. However, if every server connects to the Ubuntu official source, it will waste a lot of bandwidth. Therefore, I decided to set up an Ubuntu mirro...

Views 1,593
Cache Linux Mirror Server Ubuntu Web apt
11
AUG

Deploy a standalone Docker application on the server

This article provides a detailed overview of the complete process and best practices for deploying and managing Docker containers in a virtual machine. First, it guides users on configuring GPG keys to support the Pass password manager and setting up Docker credential storage to enable passwordless login for Docker Desktop. Second, it emphasizes the planning of persistent container volumes, highlighting the importance of mounting host directories to ensure data consistency and sharing. It also provides configuration references for commonly used containers and scripts for running them as non-root users. Additionally, the article explains port mapping, using restart policies to ensure containers start automatically with the host, and safely upgrading containers by deleting and recreating them. For scenarios involving multiple container dependencies, it recommends using Docker Compose to define service networks and volumes, combined with systemd for automated management. Finally, the article summarizes the need to manage the VM and containers separately in hybrid deployments and suggests a gradual transition to a containerized architecture to ensure system stability and maintainability.

Views 405
Container Docker Linux Ubuntu VM bash
20
APR

Put your data center to work with GPU compute power!

This article details the configuration and deployment process for vGPU in a VMware Horizon environment. First, disable cluster DRS/DPM to prevent migration deadlocks. Then, add Q/C series vGPU devices that support CUDA to the virtual machine in VCenter. When installing GRID drivers on the Linux client, you must use deb/rpm packages instead of the runfile. Configure `gridd.conf` and the license Token, and verify the authorization status using `nvidia-smi`. When installing CUDA, strictly avoid using the system package manager. You must install it via the runfile and uncheck `cuda-driver` to prevent overwriting the GRID drivers. Finally, manually configure the PATH environment variable. To ensure cross-host migration capability, plan the GPU memory splitting scheme in advance (such as 1/8 or 1/3 splits), enable the `vGPU.hotmigrate.enabled` option, and ensure that BIOS settings on all hosts (such as ECC, IO MMU, and SR-IOV) remain consistent. After configuration is complete, you can install cuDNN for AI model training or utilize `h264_nvenc` for video hardware-accelerated encoding. Additionally, the article introduces methods for monitoring temperature via `nvidia-smi` to optimize fan noise, and provides a troubleshooting guide for driver version conflicts, license expiration, and BIOS configuration errors, aiming to help users build a stable and efficient GPU computing environment.

Views 948
Ai CUDA NVIDIA Python Server Tesla Ubuntu VMware Vsphere vGPU