Need to get a dump from fro ma PHP process on Debian 9. In this post will take a Linux kernel mechanism to create and manage processes dumps. Kernel’s dumps are created in another way, check Kdump на Arch Wiki. Linux Core Dump The kernel will create a process dump if it performed an invalid… Read More »
Nested Stacks in AWS CloudFormation are stacks, created from another, a “parent”, stack using AWS::CloudFormation::Stack. The main idea behind the Nested Stacks is to avoid writing superfluous code and to make templates reusable. Instead, a template is created only once, stored in an S3 bucket, and during stacks creation – you just refer to it.… Read More »
Currently, I’m using KeePass as passwords, RSA-keys, and as the Freedesktop SecretService, see the KeePass: an MFA TOTP codes, a browser’s passwords, SSH keys passwords storage configuration and Secret Service integration post. The first issue I faced with during such a setup is the fact that KeePass’ database is synced between my computers (it’s database… Read More »
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 »
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 »
We have a Gorush server from the Kubernetes: running a push-server with Gorush behind an AWS LoadBalancer post, and I’d like to ad an ability to configure it via a Github repository and run it with a different set of settings – for Staging and Production environments. Let’s use Kubernetes ConfigMap to store a config-file… Read More »
W have a ConfigMap for our Gorush service (see the Kubernetes: running a push-server with Gorush behind an AWS LoadBalancer post). The issue is that if change a value in this ConfigMap or Secrets -it will not be applied to already running pods. There are various solitons like mount data as volumes and re-attach those… Read More »
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 »
When using an MFA for an email account you can face an issue when the same mail account may be used by multiple team members and each of them needs to have the MFA configured. for example, we have a mailbox [email protected] and I’d like to set up an MFA protection on it with Google… Read More »
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 »