Categories
Guide

Get Caddy 2.0 now with Cloudflare DNS Provider module for automatic TLS

Caddy 2.0 has finally entered GA since about a day ago, after three Release Candidates which I didn’t use. So now is high time to upgrade all our production servers to the latest and greatest version, because those 1.0.4 installation works really well and life is too boring when everything just works, we need to spice things up a little.

For Debian/Ubuntu distros, Caddy 2 now has an official repository at apt.fury.io/caddy/ which you can add to APT sources and then install it via apt install caddy. However, unlike the slick curl method in Caddy 1.x, it is no longer possible to include modules on-the-fly upon installation. If you need the popular Cloudflare DNS TLS Provider module to be included in Caddy 2, the only option at this point is to build it from source.

Categories
Guide 折腾

修改 ServerStatus-V 探针脚本配合 vnStat 2.x 版本使用

网上常见的改版 ServerStatus 探针里采用的流量统计是根据 python 函数 psutil.net_io_counters() 所返回的数值来显示的。所以每次系统重启就会清零,作为检测小鸡每月流量有没有跑超的实用性不大。后来发现了以 vnStat 流量统计为基础的 ServerStatus-V 项目,用比较科学的自然月流量采集方式补足了原来 ServerStatus 的短板,这也是我一直沿用的版本。

最近适逢 Ubuntu 20.04 LTS 问世,我把手头上一大波的 VPS 系统更新,大致顺利。但后来发现探针监控台里越来越多小鸡的流量报告均为 0 | 0。难道是更新后比较节省流量吗?当然是不存在的。强迫症发作下无可奈何只好研究一下代码…

果然,问题就出现在这行代码里:

Categories
Review VPS

BuyVM/FranTech Ryzen VPS and Storage Slab review

While AMD has made quite a comeback on the desktop front with each successful iteration of their Ryzen CPUs based on the Zen architecture, things on the server side is not as rosy, as the market is still largely dominated by Intel. For the longest time I have always wanted a Ryzen-based VPS, because I know how awesome they will be. The hunt ended when I came across BuyVM aka Frantech.

Categories
Review VPS

LiteUnit LLC KVM-512 VPS Review

LiteUnit LLC is a Russia-based hosting company that is currently offering VPS hosted in Novosibirsk, a place where it is often more affectionately known as “New Siberia”. It has nothing to do with the Moscow image featured in this article (in fact, the two cities are more than 3,300km apart), but I figure everybody loves a good cliché at the end of the day.

Categories
Nuisance VPS

RESUME variable error during system updates

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 to override this.
Categories
Guide Software VPS

Installing the latest version of Aria2 in Ubuntu 18.04 LTS

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 its frontend-backend separation architecture, Aria2 can easily be deployed on headless servers, such as a VPS, where you can remotely push download tasks to the backend server. Since the actual download takes place on on the backend server and not your frontend device, you don’t have to worry about leaving your devices on or preventing it from entering sleep/suspend states.

Categories
Guide

Protected: NAT小鸡v2.0食用教程

This content is password protected. To view it please enter your password below:

Categories
Networking

The official Telegram CIDR list

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 intermittently. That’s because the list is incomplete. JTT got you covered and you have come to the right place! Below are the known CIDR used by the Telegram Messenger service:

Categories
VPS 科普

如何使用共享IP虚拟主机而不失霸气

由于不可描述的原因并根据站长非正式统计,中国是现时云主机个人均拥有量最高的地区,没有之一。伴随这庞大需求而来的是各路厂商对成本的最大优化而衍生的各类阉割版主机,务求以低价与薄利多销的策略来吸引消费者。而对个人使用的低阶主机产品而言,已经属于稀缺资源的公网 IPv4 就占了成本的一大部分(本文的 IP 都是泛指 v4,后略)。于是市面上出现了各种各样的共享公网 IP 或 NAT 主机租赁服务。

Categories
VPS 科普

Azure 乞丐版 B1ls 的正确食用姿势 —— 压榨极致性能

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。