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theitsolutions.io

## The problem Request comes in, is processed correctly including the response generation, but the response never arrives to the client. Luckily we have extensive logging, so we could at least rule out any problem in the application layer. This did not happen often and we could never reproduce it manually, so we added even more logging to all layers of the stack, which helped pin-point the issue. It required looking deeper into what is happening exactly at the various stages of the applications lifecycle. For some more context we have the following systems architecture: an OpenShift k8s cluster, load-balancing to nginx instances that serve the application. ## The investigation On new deployments with the rolling strategy, new containers are brought up and do not receive traffic until they report as ready (according to the readinessProbe option). While this is going on, the old containers are still running and handling requests. The switch-over happens by OpenShift redirecting traffic to the new containers and at the same time signaling the old containers to terminate by sending a [SIGTERM](https://en.wikipedia.org/w/index.php?title=Signal_(IPC)#SIGTERM) to them (or whatever the container specified in its Dockerfile in the `STOPSIGNAL` option). But of course when nginx receives a `SIGTERM`, it does not finish processing outstanding request, it exits immediately. This explains why we sometimes lost a perfecly good response to a request: nginx was simply killed before it could return it. Luckily nginx knows how to gracefully exit, it simply requires another signal entirely: `SIGQUIT`. But this is not the default in the [bitnami/nginx](https://hub.docker.com/r/bitnami/nginx/dockerfile) container as opposed to the [official nginx](https://github.com/nginxinc/docker-nginx/blob/master/mainline/debian/Dockerfile#L118) container. ## The solution While we wait for bitnami/nginx to fix [the issue](https://github.com/bitnami/containers/issues/65691) upstream, we can add

datacentrix.co.za

By Kenny Nkosi, Divisional Managing Director: Gauteng Sales at Datacentrix

ishantechnologies.com

ishan technologies's managed ict services & solutions keep your business running smoothly. explore our professional managed services, & custom solutions. contact us now!

directive.com

Directive's Managed Hosting provides fast, powerful hosting, 99.99% uptime for websites, web 2.0 applications, content management systems, files and more.

global4.co.uk

Stay informed with Global 4 webinars. Explore expert insights, industry trends, and innovative solutions for your business success.

itproexpert.com

Are you running the legacy UniFi Self-Hosted Controller (UniFi Network Server) and thinking about upgrading to the new UniFi OS Server? Why upgrade to the new UniFi OS Server?Quite simply, the old controller software is now legacy and all the new features are going in UniFi OS Server. IT companies with legacy self hosted servers

block64.com

Windows Server 2016 support ends January 2027. IT teams need to inventory, assess risk, and plan migration now. Here's a step-by-step guide to prepare.

7asecurity.com

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iomart.com

Have questions about investing in Iomart? Contact our Investor Relations team for timely support, shareholder info, and corporate communications.

vladimirbelev.ru

В Windows 11 также как и в предыдущих версиях этой системы, скрываются важные для ее работы папки и системные файлы с целью защиты. Но их легко отобразить, с чем может справиться даже неподготовленный пользователь ПК. В этой статье вы найдете самую подробную инструкцию со всеми пояснениями по которой уже за несколько минут научитесь отображать л...