Blog archive by Mattias Geniar

This is a list of all my blogposts. They range from highly technical to entry level, from Linux to PHP and server management.

2019-11

2019-11-06 A fresh new look for this site
2019-11-05 A Linux sysadmin's guide to moving to a new website

2019-10

2019-09

2019-09-19 Is bitcoin dead yet?
2019-09-19 How we used Caddy and Laravel’s subdomain routing to serve our status pages
2019-09-16 Announcing Status Pages for the Oh Dear monitoring service

2019-08

2019-08-13 Time for Change: Going Independent

2019-07

2019-06

2019-06-07 Nginx: add_header not working on 404

2019-05

2019-05-27 Some useful changes to the Oh Dear! monitoring service
2019-05-04 Enable the RPC JSON API with password authentication in Bitcoin Core
2019-05-02 How to upgrade to the latest Bitcoin Core version
2019-05-01 I forgot how to manage a server

2019-04

2019-04-22 Retrieving the Genesis block in Bitcoin with bitcoin-cli
2019-04-22 Requesting certificates with Let’s Encrypt’s official certbot client
2019-04-08 Lazily load below-the-fold images and iframes
2019-04-06 Using Oh Dear! to keep your Varnish cache warm
2019-04-03 Podcast: Exploring Bitcoin with Edd Mann
2019-04-03 The end of Extended Validation certificates

2019-03

2019-03-24 Archiving the bitcoin-dev mailing lists
2019-03-22 Initial impressions on running a Bitcoin Core full node
2019-03-19 MySQL 8 & Laravel: The server requested authentication method unknown to the client

2019-02

2019-02-28 Showing the DNS score in your dashboard & an updated layout
2019-02-25 Run a Bitcoin Lightning Node on CentOS 7
2019-02-25 Limit the disk space consumed by Bitcoin Core nodes on Linux
2019-02-25 Run a Bitcoin Core full node on CentOS 7

2019-01

2019-01-23 Remote Code Execution in apt/apt-get

2018-12

2018-12-12 Our Gitlab CI pipeline for Laravel applications – Oh Dear! blog
2018-12-06 PHP 7.3.0 Release Announcement
2018-12-04 Deploying laravel-websockets with Nginx reverse proxy and supervisord
2018-12-04 Benchmarking websocket server performance with Artillery

2018-11

2018-11-29 Increase the number of open files for jobs managed by supervisord
2018-11-27 My Laracon EU talk: Minimum Viable Linux
2018-11-27 Why your NS records matter
2018-11-22 Tracking SQL queries
2018-11-19 A big update to DNS Spy – DNS Spy Blog
2018-11-11 HTTP-over-QUIC will officially become HTTP/3
2018-11-07 Automatic monitoring of Laravel Forge managed sites with Oh Dear!
2018-11-06 How to size & scale your Laravel Queues
2018-11-04 Laravel Telescope: Data too long for column ‘content’

2018-10

2018-10-17 The convincing Bitcoin scam e-mail extorting you
2018-10-10 MySQL 8 removes shorthand for creating user + permissions
2018-10-02 Find the public key belonging to a private key

2018-09

2018-09-24 ssh error: unable to negotiate with IP: no matching cipher found
2018-09-13 HHVM is Ending PHP Support
2018-09-11 Indie Hackers interview with Oh Dear!
2018-09-11 Elasticsearch fails to start: access denied “/etc/elasticsearch/${instance}/scripts”
2018-09-10 MySQL: Calculate the free space in IBD files
2018-09-07 Chrome stops showing “www”-prefix in URI

2018-05

2018-05-14 Remote Desktop error: CredSSP encryption oracle remediation
2018-05-02 DNS Spy now checks for the “Null MX”

2018-04

2018-04-30 Certificate Transparency logging now mandatory
2018-04-30 Chalk Talk #3: how to optimise your content for Varnish
2018-04-16 Upcoming presentation at LOADays: Varnish Internals – Speeding up a site x100
2018-04-06 Chalk Talk #2: how does Varnish work?
2018-04-03 Varnish: same hash, different results? Check the Vary header!
2018-04-03 Varnishlog: show the hash() data in output

2018-03

2018-03-28 Drupal core – Highly critical – Remote Code Execution – SA-CORE-2018-002
2018-03-28 It’s about what broke, not who broke it
2018-03-27 Why I usually run ‘w’ first when troubleshooting unknown machines
2018-03-25 Chalk Talk #1: An introduction to Varnish
2018-03-22 Upcoming Drupal 7 and 8 core highly critical security release: March 28th
2018-03-19 The security footgun in etcd
2018-03-15 Enable the slow log in Elastic Search
2018-03-15 Varnish 6.0 released
2018-03-11 Laravel & MySQL auto-adding “on update current_timestamp()” to timestamp fields

2018-02

2018-02-26 Clear systemd journal
2018-02-24 Announcing “Oh Dear!”: a new innovative tool to monitor your websites
2018-02-20 Update a docker container to the latest version
2018-02-19 Show IDN punycode in Firefox to avoid phishing URLs
2018-02-13 Nginx adds support for HTTP/2 Server-Side Push
2018-02-09 Chrome will mark all HTTP sites as “not secure”

2018-01

2018-01-17 Red Hat reverts microcode update to mitigate Spectre, refers to hardware vendors for fix
2018-01-16 Mozilla Firefox to require HTTPS in order to use latest features
2018-01-13 I’m taking a break from cron.weekly
2018-01-04 Intel’s CPU vulnerabilities: Meltdown and Spectre

2017-12

2017-12-11 "du --max-depth" alternative on Mac OSX

2017-11

2017-11-28 Root login without password allowed by default on Mac OSX High Sierra

2017-10

2017-10-31 Fall cleaning: shutting down some of my projects
2017-10-30 Staat der Nederlanden CA might be revoked from Mozilla Policy?
2017-10-16 Compile PHP from source: error: utf8_mime2text() has new signature
2017-10-16 KRACK Attacks: Breaking WPA2
2017-10-15 Get shell in running Docker container
2017-10-06 Antwerp WordPress User Group offering public speaking course
2017-10-04 Laravel Forge + Envoyer + Managed Hosting = Nucleus

2017-09

2017-09-21 Due to CAA records, unable to issue TLS certs for names in private.cam.ac.uk
2017-09-21 Why we’ve cancelled our free tier – DNS Spy Blog
2017-09-20 DNS Research: using SPF to query internal DNS resolvers
2017-09-18 A proposal for cryptocurrency addresses in DNS
2017-09-17 Chrome & Firefox now force .dev domains to HTTPS via preloaded HSTS
2017-09-16 Linux man-pages: man-pages-4.13 is released
2017-09-15 Cloudflare now serves F-Root instance
2017-09-14 Laravel Horizon: requires ext-posix, missing from CentOS

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