Monthly Archives: November 2019

Nextcloud: running in Docker Compose on Debian with Let’s Encrypt SSL

30 November 2019

 I while ago I’d tested the Nextcloud, see the NextCloud: installing server on Debian behind NGINX with PHP-FPM and client on Arch Linux post. In general, it looks good, so it’s time to try to run in a production environment and finally migrate from Dropbox to it. Today, let’s spin up a Nextcloud instance using… Read More »

HTTP: redirects, POST and GET requests, and the “lost” data

23 November 2019

 We have a web application which has to accept POST-requests from clients. In front of this application, there is some proxy service, no matter which – initially, we faced the issues on an AWS’s Application Load Balancer, then I reproduced them with NGINX, and it will “work” for any other proxying system. Besides proxying –… Read More »

AWS: RDS Certificate Authority SSL certificate upgrade

22 November 2019

 We started receiving emails from AWS with notifications to update RDS Certificate Authority certificates. It’s time to do it, so let’s start from our Dev, then will repeat on Staging and Production environments. W eare using common AWS RDS MariaDB instances, and the upgrade documentation is available here>>>. The process itself is really simple and… Read More »

Grafana: Loki – the LogQL’s Prometheus-like counters, aggregation functions and dnsmasq’s requests graphs

17 November 2019

 The last time I configured Loki for logs collecting and monitoring was in February 2019 – almost a year ago, see the Grafana Labs: Loki – logs collecting and monitoring system post, when Loki was in its Beta state. Now we faced with outgoing traffic issues in our Production environments and can’t find who guilty for… Read More »

What is: SAML – an overview, its structure and requests tracing between a Jenkins and Okta SSO

17 November 2019

 During the SAML SSO configuration for our Jenkins, I faced an issue, when some attributes weren’t passed from Okta to the Jenkins instance. So in this post will try to figure out what is SAML in general, will take a short overview of its architecture and main components, and will make some SAML-requests tracing/sniffing to… Read More »