https://ma.ttias.be/blog/ Recent content in Blog archive by Mattias Geniar on ma.ttias.be Hugo -- gohugo.io en-us Thu, 29 Sep 2022 14:51:53 +0200 https://ma.ttias.be/oh-dear-2-0-launch/ Thu, 29 Sep 2022 14:51:53 +0200 https://ma.ttias.be/oh-dear-2-0-launch/ I couldn’t be prouder to showcase Oh Dear 2.0, our all-in-one monitoring solution for websites. Over the past year, we’ve redesigned the entire service and have started implementing the designs. https://ma.ttias.be/cargo-no-such-subcommand-nightly/ Mon, 23 Nov 2020 00:00:00 +0000 https://ma.ttias.be/cargo-no-such-subcommand-nightly/ I was trying to run the following command: $ cargo +nightly install [package] error: no such subcommand: `+nightly` But … that didn’t work. https://ma.ttias.be/could-not-find-directory-of-openssl-installation/ Mon, 23 Nov 2020 00:00:00 +0000 https://ma.ttias.be/could-not-find-directory-of-openssl-installation/ 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. https://ma.ttias.be/openssl-pkg-config-not-found/ Mon, 23 Nov 2020 00:00:00 +0000 https://ma.ttias.be/openssl-pkg-config-not-found/ I found this error message when compiling some software from source: It looks like you're compiling on Linux and also targeting Linux. https://ma.ttias.be/wabt-sys-compile-error-cmake-project-version-not-declared-in-scope-ubuntu-18-04/ Mon, 23 Nov 2020 00:00:00 +0000 https://ma.ttias.be/wabt-sys-compile-error-cmake-project-version-not-declared-in-scope-ubuntu-18-04/ When trying to compile WebAssembly (wabt-rs) for a dependent package, it failed on Ubuntu 18.04 LTS due to this error message. https://ma.ttias.be/a-new-start-for-dns-spy/ Wed, 16 Sep 2020 00:00:00 +0000 https://ma.ttias.be/a-new-start-for-dns-spy/ 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. https://ma.ttias.be/big-fonts/ Thu, 20 Aug 2020 00:00:00 +0000 https://ma.ttias.be/big-fonts/ Over the last few years, I’ve gradually been increasing my font size in my terminal, editor and wherever possible. https://ma.ttias.be/recap-measuring-linux-performance-avoid-typical-mistakes/ Thu, 09 Jul 2020 06:50:00 +0100 https://ma.ttias.be/recap-measuring-linux-performance-avoid-typical-mistakes/ In the last two weeks, Peter Zaitsev published a 4-part series on measuring Linux performance on this blog. https://ma.ttias.be/how-to-measure-linux-performance-avoiding-most-typical-mistakes-network/ Wed, 08 Jul 2020 06:50:00 +0100 https://ma.ttias.be/how-to-measure-linux-performance-avoiding-most-typical-mistakes-network/ This post is the last part in a four-part blog series by Peter Zaitsev, Percona Chief Executive Officer. https://ma.ttias.be/how-to-measure-linux-performance-avoiding-most-typical-mistakes-memory/ Mon, 06 Jul 2020 06:50:00 +0100 https://ma.ttias.be/how-to-measure-linux-performance-avoiding-most-typical-mistakes-memory/ This post is the third in a four-part blog series by Peter Zaitsev, Percona Chief Executive Officer. https://ma.ttias.be/how-to-measure-linux-performance-avoiding-most-typical-mistakes-disk-storage/ Thu, 02 Jul 2020 06:50:00 +0100 https://ma.ttias.be/how-to-measure-linux-performance-avoiding-most-typical-mistakes-disk-storage/ This post is the second in a four-part blog series by Peter Zaitsev, Percona Chief Executive Officer. https://ma.ttias.be/add-swap-linux/ Tue, 30 Jun 2020 00:00:00 +0000 https://ma.ttias.be/add-swap-linux/ 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. https://ma.ttias.be/git-commit-without-pre-commit-hook/ Mon, 29 Jun 2020 00:00:00 +0000 https://ma.ttias.be/git-commit-without-pre-commit-hook/ Quick tip if you want to skip the pre-commit validations and quickly want to get a commit out there. https://ma.ttias.be/how-to-measure-linux-performance-avoiding-most-typical-mistakes-cpu/ Mon, 29 Jun 2020 00:00:00 +0000 https://ma.ttias.be/how-to-measure-linux-performance-avoiding-most-typical-mistakes-cpu/ This post is the first in a four-part blog series by Peter Zaitsev, Percona Chief Executive Officer. https://ma.ttias.be/read-eml-mail-mutt-mac-osx/ Fri, 26 Jun 2020 00:00:00 +0000 https://ma.ttias.be/read-eml-mail-mutt-mac-osx/ As part of the cron.weekly newsletter, I want to test the plain-text version of the mail as much as possible. https://ma.ttias.be/want-to-improve-add-a-delay/ Thu, 11 Jun 2020 00:00:00 +0000 https://ma.ttias.be/want-to-improve-add-a-delay/ If you’re a bit like me, you’re probably impatient. You want things to move quickly. There’s no time to waste! https://ma.ttias.be/how-are-users-finding-our-saas/ Tue, 09 Jun 2020 00:00:00 +0000 https://ma.ttias.be/how-are-users-finding-our-saas/ 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 maximize that? https://ma.ttias.be/making-life-easier-with-cron/ Thu, 04 Jun 2020 00:00:00 +0000 https://ma.ttias.be/making-life-easier-with-cron/ This post shares some ideas about working with cronjobs, to help make common tasks more easy for both junior and senior sysadmins. https://ma.ttias.be/php-package-simplify-working-percentages/ Mon, 01 Jun 2020 00:00:00 +0000 https://ma.ttias.be/php-package-simplify-working-percentages/ I created a PHP package that can make it easier to work with percentages in any PHP application. https://ma.ttias.be/certificate-chain-stuffing/ Mon, 25 May 2020 00:00:00 +0000 https://ma.ttias.be/certificate-chain-stuffing/ 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. https://ma.ttias.be/mysql-error-1153-08s01-got-a-packet-bigger-than-max-allowed-packet-bytes/ Fri, 15 May 2020 00:00:00 +0000 https://ma.ttias.be/mysql-error-1153-08s01-got-a-packet-bigger-than-max-allowed-packet-bytes/ I ran into this error when doing a very large MySQL import from a dumpfile.