Category: Sysadmin
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Let’s Encrypt, Ubuntu, Certbot and the Unifi Controller
For the sake of this post, let’s assume you’re running a quite minimal install of Ubuntu 18.05 Bionic Beaver and have installed your Unifi Controller with the script from Glenn Rietveld. Install certbot Follow the official instructions. They’re good. In short, it’s just the following steps: Create renew-hook for the Unifi Controller Create the script…
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amavisd-new on Ubuntu 14.04 (trusty)
If you get anything like this in your syslog: Dec 27 20:35:36 web2 amavis[4216]: (!!)TROUBLE in pre_loop_hook: config: no rules were found! Do you need to run ‘sa-update’? Dec 27 20:35:36 web2 amavis[4216]: (!)_DIE: Suicide () TROUBLE in pre_loop_hook: config: no rules were found! Do you need to run ‘sa-update’? Then add amavis to the…
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More on Unifi and their AP:s
A follow up on my last post about my Unifi setup. I bought a new home server recently and wanted to move the controller. I took the quickest route and backed up my settings on the old controller, installed the new one, imported the settings in the new one, migrated the AP:s to the new…
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Unbound i Halon Security Router
Eftersom jag är som jag är sÃ¥ ville jag köra Unbound pÃ¥ min installation av Halon Security Router. Det visade sig lite smÃ¥meckigt eftersom systemet startas upp rent frÃ¥n alla tidigare förändringar (gillar säkerheten), men det finns stöd för att fÃ¥ in vissa typer av förändringar ändÃ¥. Det har jag självklart exploitat för att fÃ¥…
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Installera Oracle Java 7 i Ubuntu
http://www.webupd8.org/2012/01/install-oracle-java-jdk-7-in-ubuntu-via.html
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6 Ways To Kill Your Servers – Learning How To Scale The Hard Way
Good article over at HighScalability.com about what happens when a coder, even an experienced one, has to scale out a web site under time pressure. The most important lessons in my opinion are caching, tweaking configuration and stress testing.