Category Archives: Operating systems

Linux: PHP-FPM, Docker, STDOUT and STDERR – no an application’s error logs

24 February 2020
 

 We have a Docker image with NGINX, PHP-FPM, and Supervisor. In the same image, we have our PHP application included, which outputs its errors to the /dev/stderr as per its php.ini file: … [global] error_log=/dev/stderr … The problem is, that if run kubectl logs –  there will be no error output from the application. So,… Read More »

KeePass: SSH keys passwords storage and decryption on Linux

13 December 2019
 

 As a follow-up to the SSH: RSA keys, and ssh-agent for SSH keys and their passwords management post. The idea now is to make simpler to work with password-protected SSH keys, to avoid the necessity to enter a password each time when you want to load a key to the ssh-agent. One of the possible… Read More »

Chromium: Linux, keyrings && Secret Service, passwords encryption and store

10 December 2019
 

 One of the motives to go deeper into the keyrings (see the What is: Linux keyring, gnome-keyring, Secret Service, and D-Bus post) was the fact that Chromium, surprise-surprise, keep passwords unencrypted if a Linux system has no keyring and/or Secret Service enabled. So, let’s try to find how and where Chromium store passwords, and the… Read More »

What is: Linux keyring, gnome-keyring, Secret Service, and D-Bus

7 December 2019
 

 It’s a really long-read post and I wast sure if it’s better to split it into three parts or put them together. On the one side, there are keyrings, from another – D-Bus, and finally, there is a Secret Service. Eventually, I decided to keep them here together as I googled all it in the… Read More »

SSH: RSA keys, and ssh-agent for SSH keys and their passwords management

1 December 2019
 

 During keyring configuration for the Nextcloud client (see the Linux: the Nextcloud client, qtkeychain and the “The name org.freedesktop.secrets was not provided by any .service files” error post) – I decided to clean up the mess in my SSH keys, as I have a lot of them and sometimes authentication became just pain. In general… Read More »

Linux: the Nextcloud client, qtkeychain and the “The name org.freedesktop.secrets was not provided by any .service files” error

1 December 2019
 

 After installing Nextcloud (see the Nextcloud: running in Docker Compose on Debian with Let’s Encrypt SSL post), on the next day its client ton my Arch Linux asked for authentication. But after I entered my credentials, it returned me the following error: Reading from keychain failed with error: ‘The name org.freedesktop.secrets was not provided by… Read More »

Redis: fork – Cannot allocate memory, Linux, virtual memory and vm.overcommit_memory

28 August 2019
 

 Currently, I’m configuring a Redis as a caching service for our application and during that, I faced with the question: do I need to set vm.overcommit_memory to the value 1, i.e. disable it – or not? The question is quite old for me, see The story, but only now I found time to get to… Read More »

What is: chroot – system call and utility in Linux

23 March 2019
 

 chroot() was added to the Version 7 Unix in 1979 and used for filesystem isolation. In fact, it’s the predecessor of the whole current containerization idea, just now there are namespaces and cgroups are used while earlier chroot was used to create an environment which is isolated from a host and can be used for… Read More »

TestRail: QA Test Case Management installation on Linux

22 March 2019
 

 TestRail – Test Case Management Software for QA and Development Teams. Well – that’s all needed as a description) Below – its installation on Debian Linux with NGINX, Let’s Encrypt, PHP-FPM, MariaDB, and Exim. Project’s homepage – www.gurock.com/testrail Installation official documentation – here>>>. Setup will be on an AWS EC2. LEMP and SSL Login to… Read More »

Linux: telegram-desktop – no systray icon

13 March 2019
 

 Have the telegram-desktop installed via pacman on the Arch Linux. After starting – no systray’s icon present and thus can’t see new messages and even can’t exit in a normal way. This issue is not specific for the Arch Linux and happens on any Linux systems. Go to the Google and make search with “telegram linux… Read More »