Testing Page Speed With Cloudflare Automatic Signed Exchanges & Google Search Cache

Cloudflare Automatic Signed Exchanges

During Cloudflare Speed Week 2021, Cloudflare announced Cloudflare Automatic Signed Exchanges (SXGs) which improve page load speed and Google Core Web Vital metrics like Largest Contentful Paint (LCP) by allowing Cloudflare to serve up a signed cached version of your web page to Google search engine crawler which can then prefetch the cached version to their own local cache and to the visitor’s web browser local cache.

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Centmin Mod Managing Letsencrypt DST Root CA X3 Certificate Expiration On CentOS 7

Letsencrypt SSL

On September 30, 2021, Letsencrypt’s DST Root CA X3 cross-sign (by IdentTrust) root certificate expired and was replaced with Letsencrypt’s own ISRG Root X1 CA root certificate. I’ll outline how Centmin Mod LEMP stack handled the Letsencrypt’s DST Root CA X3 certificate expiration for CentOS 7.x operating systems.

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How To Setup Cloudflare Argo Tunnel On CentOS 7

Cloudflare Argo Tunnel Setup

Cloudflare Argo Tunnel allows you to expose your web server to the internet without having to open routes in your firewall or setup dedicated routes. This guide will outline how you can setup Cloudflare Argo Tunnel for private encrypted HTTP/2 connection to your origin web server or web application on CentOS 7 for Centmin Mod LEMP stack users.

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How To Switch From Letsencrypt to ZeroSSL Free SSL Certificates On Centmin Mod

ZeroSSL

Centmin Mod uses Neil Pang’s acme.sh client as the underlying tool to issue and obtain free Letsencrypt certificates for Nginx HTTPS auto created sites. The acme.sh client has added support for other free ACME protocol compatible CA SSL providers like Buypass (BuyPass Go SSL) and ZeroSSL. This guide shows how you can switch over from Letsencrypt to using ZeroSSL SSL certificates which uses Sectigo (Comodo) certificates and supports free wildcard SSL certificates and doesn’t have any rate limiting for SSL certificate issuance.

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How To Bulk Domain Transfer To Cloudflare Registrar And Save On Domain Renewal Costs

Cloudflare Registrar

Cloudflare Domain Registrar is a privacy focused no markup price domain registrar provider which can reduce your domain renewal costs significantly. However, a requirement is that you use their Cloudflare nameservers and have onboarded your domain(s) to their service first. This guide will show how you can bulk domain transfer many domains including onboarding to Cloudflare service and nameservers.

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How To Bulk Domain Transfer Out From Cloudflare Registrar Via Cloudflare API

Cloudflare Registrar

Cloudflare Registrar is a cost price domain registrar offering cheap domain transfers and registrations. However, at one point you may need to transfer many domains out of Cloudflare Registrar to another registrar – offering discount domain transfer pricing or specials. This guide will show you how to bulk transfer out the domains via Cloudflare Registrar API via command line or scripting.

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Fast Tar And Rsync Transfer Speed For Linux Backups Using Zstd Compression

Centmin Mod Tips

Newer Tar 1.32+ and Rsync 3.2.3 versions have added Facebook’s zstd compression algorithm and Rsync has added lz4 and xxHash checksum algorithms which give Tar and Rsync a tremendous boost in transfer speed. I’ve switched most of my own personal backup scripts to using these newer Tar 1.32+ and Rsync 3.2.3 versions now.

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CentOS 7 Python 2.7 Upgrade Deprecation Message – End Of Life January 1st, 2020

Centmin Mod Tips

For CentOS 7 based Centmin Mod users, you may run into the Python 2.7 deprecation message when running CentOS 7 native Python 2.7 and that Python 2.7’s end of life is on January 1, 2020 and that you need to upgrade Python 2.7. You should not upgrade the CentOS 7 native Python 2.7 as that may break your system and YUM operation. Instead, you should install a newer Python version side by side.

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