Category Archives: HOWTO’s

Redis: “psync scheduled to be closed ASAP for overcoming of output buffer limits” and the client-output-buffer-limit

26 February 2020
 

 We have a Redis-cluster with Master-slave replication and Sentinel, see the Redis: replication, part 2 – Master-Slave replication, and Redis Sentinel, Redis: fork – Cannot allocate memory, Linux, virtual memory and vm.overcommit_memory, and Redis: main configuration parameters and performance tuning overview posts. The system worked great until we started using it much more actively. Redis… Read More »

Kubernetes: running metrics-server in AWS EKS for a Kubernetes Pod AutoScaler

15 February 2020
 

 Assuming, we already have an AWS EKS cluster with worker nodes. In this post – we will connect to a newly created cluster, will create a test deployment with an HPA – Kubernetes Horizontal Pod AutoScaler and will try to get information about resources usage using kubectl top. Kubernetes cluster Create a test cluster using… Read More »

Calibre Web: home in-browser online-library with Nextcloud storage and Moon+ Reader on Android

7 January 2020
 

 I’m using Calibre for my e-books library management for many years, but until today always used its desktop version. A couple of days ago I found the Calibre Web project – the same library, working with the same database, but accessible via a browser. The idea is to move away from storing books in Google… 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 »

KeePass: an MFA TOTP codes, a browser’s passwords, SSH keys passwords storage configuration and Secret Service integration

12 December 2019
 

 So, this seems to be the last one post in the whole series about passwords and SSH management in Linux. The previous parts were about: Linux: the Nextcloud client, qtkeychain and the “The name org.freedesktop.secrets was not provided by any .service files” error – I found that a keyring service is able to store SSH… 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 »