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collectd
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The system statistics collection daemon.
The system statistics collection daemon.

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collectd 5.7.1 has been released and is available for download. This is a patch release that is only fixing bugs in the 5.7 version and doesn't introduce new features.
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collectd 5.5.2 and 5.4.3 are available. These new releases fix a number of bugs, most importantly the security issue CVE-2016-6254. We advise all users to upgrade as soon as possible. Updated Debian packages are available and RedHat packages are currently in testing.

Full ChangeLog available here: https://github.com/collectd/collectd/releases/tag/collectd-5.5.2
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Sebastian has written a prototype gRPC plugin which allows to interact with collectd in a manner similar to the UnixSock plugin. Looks like Sebastian is hoping for C++ experts to jump on the project, so reach out to him if you're interested in cleaning up / extending this plugin!
gRPC plugin for collectd

So, the inevitable has happened: I hacked a gRPC plugin for collectd, currently allowing to dispatch and query (list) values. I think it nicely demonstrates how things work and is easy to extend to support more features. Anyway, I'm sure there are a few things that could be cleaned up on the C++ side (I'm not very good friends with that language). I'm hoping that someone else will pick it up from here ;-)

As a nice side-effect, the change introduces support for C++ and protocol buffers to collectd and the build system. Also, it provides a more complete example of an asynchronous gRPC server than the examples shipped along with the upstream project.

#grpc   #protobuf   #collectd   #hacking  
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+collectd determined as the #1 metrics collection tool in the 2015 Monitoring Survey. Yay! \o/
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#collectd 1.0.0 was released 10 years ago today. Happy birthday!
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We're proud to announce that collectd 5.5.0 has been released. This version comes packed with new features. Here's merely a short summary, for the full list see https://collectd.org/wiki/index.php/Version_5.5 – you can download the tarballs from https://collectd.org/download.shtml

New plugins allow collectd to read metrics form #Ceph and #DRBD (both distributed file systems), #OpenLDAP and Apache #Zookeeper . On the hardware side, there are new plugins for reading barometers, #SMART data from hard drives and C-states (idle states) from Intel CPUs. From the operating system we now get information on file handles and shared memory.

Integration with other systems has also been improved, there are new plugins to write collectd metrics to Apache #Kafka , a distributed message queue, #Sensu , a popular monitoring solution, and #OpenTSDB , a distributed timeseries database.

Of course, many existing plugins have been extended, too. For example, CPU usage can finally be reported as a percentage, rather than jiffies. This was one of our most-requested features.

Huge thanks to all of our contributors – you are awesome!
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Gone amongst the Gophers? Check this out!
I've spend some time implementing the binary network protocol in the collectd Go API last week. The implementation provides support for both, client and server, and also implements the encryption / signing of metrics.

The different parts are designed so that they "fit together" well, making it very easy to write proxy servers and the like. Take a look at the examples for the "ListenAndDispatch()" function …

The project is currently still very much a work in progress – beware of stuff moving around. In this early stage, I'd especially welcome feedback since it's still easy to make changes.

#collectd #golang
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FYI, collectd-tg (collectd traffic generator) can be used to stress test collectd server setups. It's part of the standard source tarball.
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Awesome, logstash 1.3 comes with support for consuming +collectd metrics!
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