Posts Tagged ‘open source’

Using Prometheus to monitor Postfix mail queues

Monday, February 27th, 2017

Over the last couple of months we’ve published several blog posts to announce the release of various Open Source metrics exporters for Prometheus. The development of these exporters is an on-going process at Kumina, as we’re working towards replacing our existing Nagios-based monitoring setup with Prometheus. oday we’re proud to present to you our own Prometheus metrics exporter for Postfix, written in Go.

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A Prometheus exporter for Dovecot

Monday, January 16th, 2017

To start this year’s series of contribution to the open source community, we’re proud to announce the release of yet another tool that we use to monitor our production setup, namely a Prometheus metrics exporter for the Dovecot POP/IMAP mail server. If your email setup is also based on Dovecot and use Prometheus for monitoring, we’d like to invite you to give this exporter a try.

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KumiNews 2016: The latest and the future at a glance

Monday, January 2nd, 2017

Kumina can look back on a successful year. A lot happened at Kumina these past 12 months. We carried out challenging new projects and started new collaborations with amazing organisations. Behind the scenes, we worked hard on optimising and extending our services. We also welcomed new colleagues at our team. Read everything about the latest developments at Kumina in 2016 and about our future plans.

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Birdwatcher: Accessing Calico/BIRD metrics through Prometheus

Friday, October 28th, 2016

Today we’re happy to announce that Birdwatcher is now available on ​our company’s GitHub page. It accesses Calico/BIRD metrics through Prometheus. If you’re a user of both Calico and Prometheus, be sure to give it a try. Enjoy!

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Kumina sponsoring CloudABI: practical sandboxing for UNIX

Friday, October 14th, 2016

Kumina is sponsoring CloudABI: CloudABI is a UNIX-like programming environment for Linux and the BSDs that allows you to easily design sandboxed applications. It accomplishes this by making strong use of capability-based security, inspired by the University of Cambridge’s Capsicum. Compared to traditional UNIX applications, CloudABI applications are better resistent against security vulnerabilities, easier to test and easier to maintain. CloudABI is available as Open Source Software, free of charge.

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Buckler: Authentication and authorization for Kibana, for free!

Thursday, September 29th, 2016

Today we’re glad to announce that we’re releasing Buckler as open source software. Buckler is free alternative to Shield, a light-weight proxy for Kibana, written in Python (Django). It allows you to restrict access in Kibana by adding password authentication. When logged in, a user is only allowed to access indices specified for that user in Buckler’s configuration file.

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awssyncer: an automatic syncer for Amazon S3 that makes use of inotify

Friday, September 16th, 2016

At Kumina, we’re strong users of the Amazon AWS cloud computing platform. We’ve been using EC2 instances for quite some time and are currently working on expanding this by making use of Kubernetes. To further optimise our solutions, we’ve developed a new utility called awssyncer, which is as of now available on GitHub! awssyncer is a utility written in C++ that uses Linux’s inotify to keep track of local modifications to a directory on disk. The purpose of this utility is to use these inotify events to determine which files need to be synced back into S3. This utility thus provides continuous one-way sychronisation from local disk to S3. A simple container startup script is used to sync files from S3 to local disk on startup. Though we realise that this utility is fairly specific to our situation at hand, we do invite all of you to give it a try.

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Job opening

Monday, February 14th, 2011

Want to work at Kumina? We’re looking for someone!

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