Since its introduction the HTTP/2 protocol has been adopted more and more in servers and clients applications thanks to its improved performance compared to its ancestor HTTP/1.1. This poses an issue to services exposed via nginx, since some specific configurations are needed on nginx in order to allow clients and servers to fully use the…
Read MoreAnyone who has joined the beautiful world of logging has collided, sooner or later, with the collection via syslog protocol. More than 40 years have passed since syslog was invented, and in that time there have been several attempts by the IETF to create a standard around this world (RFC 3164 and RFC 5424). Even…
Read MoreIn a previous blog post I described how we installed our first OpenShift cluster and how we used HA Proxy as a load balancer. Our cluster is meant to host both internal services (like CI and docker registry) and public services, and we thus have to expose them on multiple domains with valid SSL certificates….
Read MoreIn this post, I’ll describe a little Proof of Concept (PoC) that I developed to better understand Elasticsearch’s APM-Tracing and Real User Monitoring (RUM). We’ll see how we can use this technology to keep track of interactions between frontend and backend service(s), collect error logs centrally, and see where the bottlenecks are. I’ll put the…
Read More