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Ma.ttias.be ~ The Web, Open Source, Php, Security, Blog
mattiasgeniar.be
The Web, Open Source, PHP, Security, DevOps & Automation.
2020-11-23 00:00
I was trying to run the following command:
$ cargo +nightly install [package] error: no such subcommand: `+nightly` But … that didn’t work Read More
2020-11-23 00:00
Ran into this error when compiling some software from source:
Could not find directory of OpenSSL installation, and this `-sys` crate cannot proceed without this knowledge Read More
2020-11-23 00:00
I found this error message when compiling some software from source:
It looks like you're compiling on Linux and also targeting Linux Read More
2020-11-23 00:00
When trying to compile WebAssembly (wabt-rs) for a dependent package, it failed on Ubuntu 18.04 LTS due to this error message Read More
2020-09-16 00:00
Hi all!
I’m excited to announce a strategic handover of DNS Spy to SecurityTrails with the goal to ensure both the future and growth of DNS Spy Read More
2020-08-20 00:00
Over the last few years, I’ve gradually been increasing my font size in my terminal, editor and wherever possible Read More
2020-07-09 05:50
In the last two weeks, Peter Zaitsev published a 4-part series on measuring Linux performance on this blog Read More
2020-07-08 05:50
This post is the last part in a four-part blog series by Peter Zaitsev, Percona Chief Executive Officer Read More
2020-07-06 05:50
This post is the third in a four-part blog series by Peter Zaitsev, Percona Chief Executive Officer Read More
2020-07-02 05:50
This post is the second in a four-part blog series by Peter Zaitsev, Percona Chief Executive Officer Read More
2020-06-30 00:00
Here are the steps needed to add a new SWAP partition to your Linux machine. This’ll allocate 2GB of space on your disk, and allow it to be used as RAM if your server is running low Read More
2020-06-29 00:00
Quick tip if you want to skip the pre-commit validations and quickly want to get a commit out there Read More
2020-06-29 00:00
This post is the first in a four-part blog series by Peter Zaitsev, Percona Chief Executive Officer Read More
2020-06-26 00:00
As part of the cron.weekly newsletter, I want to test the plain-text version of the mail as much as possible Read More
2020-06-11 00:00
If you’re a bit like me, you’re probably impatient. You want things to move quickly. There’s no time to waste! Read More
2020-06-09 00:00
After more than 2 years of building Oh Dear, I still struggle with the most fundamental question: how are users finding our application and where should we focus our marketing efforts to max… Read More
2020-06-04 00:00
This post shares some ideas about working with cronjobs, to help make common tasks more easy for both junior and senior sysadmins Read More
2020-06-01 00:00
I created a PHP package that can make it easier to work with percentages in any PHP application Read More
2020-05-25 00:00
I recently learned that quite a few (old) root certificates are going to expire, and many websites still send those along in the TLS handshake Read More
2020-05-15 00:00
I ran into this error when doing a very large MySQL import from a dumpfile Read More
2020-05-14 00:00
Annoyingly, the date command differs vastly between Linux & BSD systems. Mac, being based on BSD, inherits the BSD version of that date command Read More
2020-05-10 00:00
In a few hours, the Bitcoin network will experience its third “halving”. So what is it and how does it work under the hood? Read More
2020-05-10 00:00
In a few hours, the Bitcoin network will experience its third “halving”. So what is it and how does it work under the hood? Read More
2020-05-05 00:00
These instructions can be followed to create a 2-out-of-3 multisignature address on the EOS blockchain (or any derivative thereof) Read More
2020-05-03 00:00
I had a use case where I wanted to be notified whenever a particular string occured in a log file Read More
2020-05-03 00:00
A quick reminder to myself that the Developer Console in Chrome or Firefix is useful to mass-select a bunch of checkboxes, if the site doesn’t have a “select all”-option (w… Read More
2020-04-29 00:00
Every Sunday, I send out a newsletter called cron.weekly to over 10.000 subscribers. In this post, I’ll do a deep-dive into how those mails get delivered to subscribers Read More
2020-04-29 00:00
This post will show you how to use Bitbucket Pipelines to build and test your Laravel Project in a docker container Read More
2020-04-27 00:00
Introduction Some of members of the cloud-native computing world have recently been trying to find a way to address the areas where Kubernetes falls short when trying to run on resource cons… Read More
2020-04-26 00:00
Here’s what I’ve been doing for most of my life, when it comes to writing crontab entries: Read More
2020-04-26 00:00
Here’s a quick example of setting up a custom 404 landing page if you use Caddy V2 to serve static sites, like this blog Read More
2020-04-26 00:00
Deploying a Linux server is really easy these days thanks to the abundance of cloud server providers like Linode, Digital Ocean etc Read More
2020-04-21 00:00
I want to try something new for this blog: guest writing.
If you have an idea for a Linux/Server/Dev guide or a strong (but interesting) opinion on technology and its implications, I would l… Read More
2020-04-21 00:00
It’s good to be reminded of the fact that the internet is, in fact, a pretty hostile place Read More
2020-04-20 00:00
Whenever I want to give people career advice, I inevitably start saying the things that worked for me Read More
2020-04-16 00:00
I’m working on some new versions of PHP packages, and for that I’m working of a temporary branch Read More
2020-04-15 00:00
Over the last 3-4 years, I’ve been learning more about the inner workings of Bitcoin and all the tech & finance surrounding it Read More
2020-04-10 05:30
I just migrated this webserver to Caddy 2 and with it, enabled HTTP/3 support. This post will give a short explanation how you can do that Read More
2020-04-10 05:00
Last week, the first Release Candidate of Caddy 2 saw the light of day. I don’t usually like to run production environments on beta software, but for Caddy I wanted to make an exceptio… Read More
2020-03-12 00:00
By now, you’ve heard of the Corona virus, otherwise known as SARS-CoV-2 or COVID-19 Read More
2020-03-09 00:00
I just lost an hour or 2 of my life to this, so I figure I’ll do a small write-up to save future me from having to do the same dance Read More
2020-02-27 00:00
Have you noticed how this page doesn’t have a cookie pop-up? Nothing to accept before you can read the content? Read More
2020-02-26 00:00
Bram Van Damme recently shared a really cool method of showing a table of contents on a page and I’ve wanted to implement it on this blog ever since Read More
2020-02-22 00:00
I recently got a PuTTY private key sent to me that I wanted to use to log into a remote server Read More
2020-02-05 00:00
Ever since I became independent, I’ve wanted to write about the financial aspects of running a business Read More
2020-01-31 00:00
In case you’ve missed it: the cron.weekly newsletter is back!
I’m about 6 issues in to the new season and I feel I’ve gotten a good flow going Read More
2020-01-17 00:00
Here’s a small little trick when using mysqldump: you don’t have to dump an entire database, you can dump individual tables too Read More
2020-01-13 00:00
Systemd allows you to configure a service so that it automatically restarts in case it’s crashed Read More
2019-12-28 00:00
There’s a tweet going around in the last few days that highlights that Ubuntu’s default MOTD (Message of the Day) fetches information from an Ubuntu server Read More
2019-12-20 00:00
A few weeks ago I toyed with the idea of making a JSON prettifier myself. I often use these to re-format and debug a minified JSON payload Read More
2019-12-19 00:00
As part of our Oh Dear! monitoring service, we run workers. A lot of workers. Every site uptime check is a new worker, every broken links job is a new worker, every certificate check is a- y… Read More
2019-12-12 00:00
We’ve all been there, right? You debug something, you try telnet to see if a port is open, and now you’re stuck in a telnet session Read More
2019-12-05 00:00
If you’re setting up an Ubuntu 18.04 LTS server, you might want to give it a static IP address instead of one assigned by your router over DHCP Read More
2019-12-01 00:00
Once upon a time I wrote a weekly newsletter on Linux, open source & web development Read More
2019-11-27 00:00
I’ve got a Mac Mini at home to act as a server & desktop. On it there are several Virtual Box VMs, among which a a pihole to block unwanted requests via DNS Read More
2019-11-27 00:00
There’s an annoying little bug in VirtualBox that can cause your network config in the VM to become invalid after a reboot of your host Mac Read More
2019-11-25 00:00
I’ve been using the Caddy webserver for all my projects lately Read More
2019-11-21 00:00
I ran into this error when I tried any git operation (like git clone and git pull) on a Mac Read More
2019-11-21 00:00
If you have a Laravel project, you might be surprised to find your routes are probably available on a number of different URLs Read More
2019-11-20 00:00
We had an interesting security report for our Oh Dear monitoring service Read More
2019-11-19 00:00
I’ve been moving some projects around lately and found myself in need of a weird thing I hadn’t considered before: specifying a specific SSH private key for running things like g… Read More
2019-11-15 00:00
I want to show you how I use a tool called goaccess to do some quick analysis of access logs on webservers Read More
2019-11-12 00:00
I just finished the last bits of migration for this site Read More
2019-11-09 00:00
Here’s a quick tip on how to combine multiple separate videos into a single one, using ffmpeg Read More
2019-11-08 00:00
If you run a Laravel application purely as a headless API, you can benefit from disabling the HTTP sessions Read More
2019-11-06 19:07
It took a bit longer than I expected but I’m happy to say I’ve migrated this website from WordPress to Hugo and introduced a new layout Read More
2019-11-05 10:01
I’ve just finished migrating this website from a WordPress to a statically generated site with Hugo Read More
2019-10-22 15:54
The post strace: operation not permitted, ptrace_scope incorrect appeared first on ma.ttias.be.
When using strace on a server, you might get this error message when you try to attach to a ru… Read More
2019-10-21 08:02
The post warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory appeared first on ma.ttias.be.
On a freshly installed CentOS 7 machine, I got the following not… Read More
2019-10-16 19:26
The post Mac pecl install: configure: error: Please reinstall the pkg-config distribution appeared first on ma.ttias.be.
I ran into this error when doing a pecl install imagick on a Mac.
$… Read More
2019-10-16 19:24
The post Install PHP’s imagick extension on Mac with Brew appeared first on ma.ttias.be.
I was setting up a new Mac and ran into this problem again, where a default PHP installation wi… Read More
2019-10-14 11:46
The post Laravel’s Tinker quits immediately on PHP 7.3 & Mac appeared first on ma.ttias.be.
I had a weird issue with Laravel's Tinker artisan command. Every time I would load it up… Read More
2019-10-09 08:59
The post Chrome’s next steps for security: mixed content checking more important than ever appeared first on ma.ttias.be.
The team at Chrome has announced their plans for handling mixe… Read More
2019-10-03 11:45
The post A github CI workflow tailored to Laravel applications appeared first on ma.ttias.be.
Last year we wrote a blogpost about our setup we use for Oh Dear! with Gitlab, and how we use th… Read More
2019-09-19 13:41
The post Is bitcoin dead yet? appeared first on ma.ttias.be.
Let's find out together, shall we? In this post I'll look at the current state of bitcoin, both in terms of technology and its us… Read More
2019-09-19 10:04
The post How we used Caddy and Laravel’s subdomain routing to serve our status pages appeared first on ma.ttias.be.
We recently launched our new Status Page feature. Under the hood, it… Read More
2019-09-16 13:22
The post Announcing Status Pages for the Oh Dear monitoring service appeared first on ma.ttias.be.
We just shipped a major new feature for Oh Dear!: our status pages!
Super clean, intuitive… Read More
2019-08-13 07:45
The post Time for Change: Going Independent appeared first on ma.ttias.be.
After 12 intense years at Nucleus, it's time for something new: as of September 2019 I'll stop my activities at Nuc… Read More
2019-07-10 12:51
The post Trigger an on demand uptime & broken links check after a deploy with the Oh Dear! API appeared first on ma.ttias.be.
You can use our API to trigger an ondemand run of both the u… Read More
2019-07-09 11:31
The post There’s more than one way to write an IP address appeared first on ma.ttias.be.
Most of us write our IP addresses the way we've been taught, a long time ago: 127.0.0.1, 10.0.2… Read More
2019-06-07 09:41
The post Nginx: add_header not working on 404 appeared first on ma.ttias.be.
I had the following configuration block on an Nginx proxy.
server {
listen 80 default;
add_header X… Read More
2019-05-27 18:47
The post Some useful changes to the Oh Dear! monitoring service appeared first on ma.ttias.be.
Things have been a bit more quiet on this blog, but it's only because my time & energy has… Read More
2019-05-04 20:09
The post Enable the RPC JSON API with password authentication in Bitcoin Core appeared first on ma.ttias.be.
The bitcoin daemon has a very useful & easy-to-use HTTP API built-in, that al… Read More
2019-05-02 18:00
The post How to upgrade to the latest Bitcoin Core version appeared first on ma.ttias.be.
This guide assumes you've followed my other guide, where you compile Bitcoin Core from source. These… Read More
2019-05-01 11:27
The post I forgot how to manage a server appeared first on ma.ttias.be.
Something embarrassing happened to me the other day. I was playing around with a new server on Digital Ocean and it oc… Read More
2019-04-22 14:22
The post Retrieving the Genesis block in Bitcoin with bitcoin-cli appeared first on ma.ttias.be.
If you run a Bitcoin full node, you have access to every transaction and block that was ever… Read More
2019-04-22 13:18
The post Requesting certificates with Let’s Encrypt’s official certbot client appeared first on ma.ttias.be.
There's plenty of guides on this already, but I recently used Let's E… Read More
2019-04-08 12:06
The post Lazily load below-the-fold images and iframes appeared first on ma.ttias.be.
A pretty cool feature has landed in Chromium that allows you to easily lazy-load images and iframes.
Her… Read More
2019-04-06 09:20
The post Using Oh Dear! to keep your Varnish cache warm appeared first on ma.ttias.be.
If we're already crawling your site, we might as well update your cached pages in the meanwhile!
The id… Read More
2019-04-03 18:34
The post Podcast: Exploring Bitcoin with Edd Mann appeared first on ma.ttias.be.
Last week I recorded a fun podcast with Edd Man about the tech behind Bitcoin.
Here's a summary;
We start off… Read More
2019-04-03 07:40
The post The end of Extended Validation certificates appeared first on ma.ttias.be.
You know those certificates you paid 5x more for than a normal one? The ones that are supposed to give you… Read More
2019-03-24 07:55
The post Archiving the bitcoin-dev mailing lists appeared first on ma.ttias.be.
I've started yet another effort to index and archive a public mailing list in order to present it in a more re… Read More
2019-03-22 20:19
The post Initial impressions on running a Bitcoin Core full node appeared first on ma.ttias.be.
Since about a week I'm running my own Bitcoin Core full node, one that keeps a full copy of th… Read More
2019-03-19 09:52
The post MySQL 8 & Laravel: The server requested authentication method unknown to the client appeared first on ma.ttias.be.
For local development I use Laravel Valet. Recently, the brew… Read More
2019-02-28 20:28
The post Showing the DNS score in your dashboard & an updated layout appeared first on ma.ttias.be.
A new release of DNS Spy marks some useful improvements.
We’ve had our public DN… Read More
2019-02-25 20:57
The post Run a Bitcoin Lightning Node on CentOS 7 appeared first on ma.ttias.be.
Similar to installing a Bitcoin Core full node, you can run a Lightning Node too. The same developer dependen… Read More
2019-02-25 20:57
The post Limit the disk space consumed by Bitcoin Core nodes on Linux appeared first on ma.ttias.be.
If you run a Bitcoin Core node, by default it will download the entire blockchain on star… Read More
2019-02-25 20:56
The post Run a Bitcoin Core full node on CentOS 7 appeared first on ma.ttias.be.
It's fairly simple to run a full bitcoin node on CentOS 7, if you want to compile one from source. Alternativ… Read More
2019-01-23 10:59
The post Remote Code Execution in apt/apt-get appeared first on ma.ttias.be.
A very clever exploit was found in apt.
tl;dr I found a vulnerability in apt that allows a network man-in-the-mid… Read More
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