Assuming you had or have been using Linux VPS from second or third-tier vendors, you would have come across the following error message at some point: W: initramfs-tools configuration sets RESUME=/dev/sda2 W: but no matching swap device is available. I: The initramfs will attempt to resume from /dev/vda2 I: (UUID=03bd7930-a963-4fa7-9db2-8c30eca1ea58) I: Set the RESUME variable… Continue reading RESUME variable error during system updates
Aria2 is a headless (command-line based) multi-protocol downloader. It supports the downloading of HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink resources. Many frontends exist for Aria2, they are available either as standalone apps, or browser extensions. Technically Aria2 can function by itself, but I don’t consider its command-line functionalities to be usable for most. Thanks to… Continue reading Installing the latest version of Aria2 in Ubuntu 18.04 LTS
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If for whatever reason you have the need to reroute or block Telegram Messenger traffic, at some point, you would have come across an ASN list with a list of /22 IPv4 blocks and one or two /48 IPv6 blocks. If you’ve hastily based your firewall rules on that list, you’ll notice it works only… Continue reading The official Telegram CIDR list
本文会探讨一下不使用端口映射的情况下如歌使用共享 IP 主机。
关于独享与共享：有些特定场景是必须独享 IP 的，比如基于 SIP 协议的 VoIP 语音系统或 H.323/T.120 的网络视频会议设备都不能在共享公网 IP 的场景下运作。但其实很多时候你并不需要独享 IP 的主机。
最近与几个大佬闲聊之际，发现很多人都在不约而同地吐槽 Azure 的效能。综合的来的意见不外乎是云盘 I/O 过慢（HDD/SDD 一样卡）、主机响应迟钝没反应、运行更新耗时大半天，期间 CPU 效能满载或时处于半宕机状态等等糟心体验，还贵。贵，是毋庸置疑的，毕竟产品品牌定位就是高端货，不可能做到灵车的价格。但我想说的是很多时候产品本身并无问题，只是食用姿势不对。
Swap in Linux is the equivalent of virtual memory in Windows – a space on a disk that is used when the system runs out of RAM. For some reason unknown, many cloud instances are deployed without any swap.
On a cloud instance with a slow disk, running the dreaded apt update && apt upgrade could take an eternity. But what if I tell you it may actually not be a disk IOPS issue?
For some legacy reasons, my main hypervisor has been Hyper-V running on a Windows Server. And contrary to popular belief, Linux actually supports Secure Boot and UEFI boot pretty well, and so you can create Generation 2 VM that runs Linux OS just fine. However, after installing the OS, you might have noticed that Hyper-V… Continue reading Enable Hyper-V Integration Services for your Ubuntu guest VMs
The folks over at JetBrains have provided a free programming font family, dubbed JetBrains Mono. It is open source and is highly optimized for coding, console sessions and configuration file editing views. Personally, I find it to be more legible than Google’s Source Code Pro or Ubuntu Mono. It is now my default monospaced font,… Continue reading A good font for coding