Hi Jimmi,
If you are ready to donate hawtio and the fabric metric stuff in
Decanter, it would be great.
However I'm not sure it's what you proposed.
But you got the purpose of the Decanter proposal: build a monitoring
platform for Karaf, as part of the Karaf subproject ecosystem. So any
contribution, idea is more than welcome !
As I said in previous e-mail, I don't want to have any troll or any
"side project promotion/advertising" is this thread. I started Decanter
prototype and proposal just in regard of a need in the Apache Karaf
ecosystem.
Thanks a lot for your feedback, and I'm eager to see contributions for
hawtio and more.
By the way, I think I will start a formal vote for donation later today.
Regards
JB
On 10/15/2014 10:12 AM, Jimmi Dyson wrote:
Continuing on from what Guillaume said, in fabric we have some of the
features that you're proposing for Decanter & should be able to
contibute back, refactoring anything that is fabric specific (of which
there isn't much). We have an Elasticsearch configuration factory that
uses the SMX Elasticsearch bundle. This includes plugin support (albeit
plugins need to be fragment bundles), that could be used with no
refactoring at all (in fabric we have a custom discovery plugin that
doesn't need to be installed) - we can get this in to the SMX
Elasticsearch bundle probably? This allows you to embed full clusters
inside Karaf deployments & even have Elasticsearch
client/transport/tribe nodes hooked up to externally configured clusters
if you want.
Fabric also has pluggable log/metric collection services & pluggable
log/metric storage services & again this is something that should be
usable with little/no refactoring in Decanter if you wanted.
hawtio is a great front end (nothing fabric specific in it, although
there are plugins for fabric) & would give you a single place where all
your dashboards from different tools (Kibana, Grafana, etc) are in a
single place.
I'm really happy to see this proposal & hope we can contribute to it.
On 15 October 2014 08:41, Charlie Mordant <[email protected]
<mailto:[email protected]>> wrote:
Hi J.B.,
I saw an HawtIO plugin for Kibana (but didn't tested it), so it
could be possible that you'll have nothing to do for you HawtIO
integration :p.
As an addition, a Decanter Karaf feature could be made to ease the
user interaction with ElasticSearch (installing either Jelastic or
Spring-data-elasticsearch).
May be a Docker container can be implemented to ease
Elastic+Kibana+logstash installation (and may be karaf command for
installing all: the container in an Unix env, boot2docker + the
container in a MacOSX one, Vagrant + CoreOS + container in a windows
one....).
Nice name however: Decanter sounds well with a Karaf and an old
Pomard :), it also explains well the goal of the product.
It's also nice idea, I thought to do the same for my distro and it's
far better if it's an Apache/Karaf product!
Good luck for the job, I'll try an Elastic Karaf feature on my side
(then give it to you).
Best regards,
2014-10-15 5:17 GMT+02:00 Andreas Pieber <[email protected]
<mailto:[email protected]>>:
Hey,
The collection definitely sounds like a perfect idea for a Karaf
sub project to me. Beside the great potential for the components
I like the especially fitting name 😊 +1
Kind regards,
Andreas
On Oct 14, 2014 5:13 PM, "Jean-Baptiste Onofré" <[email protected]
<mailto:[email protected]>> wrote:
Hi all,
First of all, sorry for this long e-mail ;)
Some weeks ago, I blogged about the usage of ELK
(Logstash/Elasticsearch/__Kibana) with Karaf, Camel,
ActiveMQ, etc to provide a monitoring dashboard (know what's
happen in Karaf and be able to store it for a long period):
http://blog.nanthrax.net/2014/__03/apache-karaf-cellar-camel-__activemq-monitoring-with-elk-__elasticsearch-logstash-and-__kibana/
<http://blog.nanthrax.net/2014/03/apache-karaf-cellar-camel-activemq-monitoring-with-elk-elasticsearch-logstash-and-kibana/>
If this solution works fine, there are some drawbacks:
- it requires additional middlewares on the machines.
Additionally to Karaf itself, we have to install logstash,
elasticsearch nodes, and kibana console
- it's not usable "out of the box": you need at least to
configure logstash (with the different input/output
plugins), kibana (to create the dashboard that you need)
- it doesn't cover all the monitoring needs, especially in
term of SLA: we want to be able to raise some alerts
depending of some events (for instance, when a regex is
match in the log messages, when a feature is uninstalled,
when a JMX metric is greater than a given value, etc)
Actually, Karaf (and related projects) already provides most
(all) data required for the monitoring. However, it would be
very helpful to have a "glue", ready to use and more user
friendly, including a storage of the metrics/monitoring data.
Regarding this, I started a prototype of a monitoring
solution for Karaf and the applications running in Karaf.
The purpose is to be very extendible, flexible, easy to
install and use.
In term of architecture, we can find the following component:
1/ Collectors & SLA Policies
The collectors are services responsible of harvesting
monitoring data.
We have two kinds of collectors:
- the polling collectors are invoked by a scheduler
periodically.
- the event driven collectors react to some events.
Two collectors are already available:
- the JMX collector is a polling collector which harvest all
MBeans attributes
- the Log collector is a event driven collector,
implementing a PaxAppender which react when a log message occurs
We can planned the following collectors:
- a Camel Tracer collector would be an event driven
collector, acting as a Camel Interceptor. It would allow to
trace any Exchange in Camel.
It's very dynamic (thanks to OSGi services), so it's
possible to add a new custom collector (user/custom
implementation).
The Collectors are also responsible of checking the SLA. As
the SLA policies are tight to the collected data, it makes
sense that the collector validates the SLA and call/delegate
the alert to SLA services.
2/ Scheduler
The scheduler service is responsible to call the Polling
Collectors, gather the harvested data, and delegate to the
dispatcher.
We already have a simple scheduler (just a thread), but we
can plan a quartz scheduler (for advanced cron/trigger
configuration), and another one leveraging the Karaf scheduler.
3/ Dispatcher
The dispatcher is called by the scheduler or the event
driven collectors to dispatch the collected data to the
appenders.
4/ Appenders
The appender services are responsible to send/store the
collected data to target systems.
For now, we have two appenders:
- a log appender which just log the collected data
- a elasticsearch appender which send the collected data to
a elasticsearch instance. For now, it uses "external"
elasticsearch, but I'm working on an elasticsearch feature
allowing to embed elasticsearch in Karaf (it's mostly done).
We can plan the following other appenders:
- redis to send the collected data in Redis messaging system
- jdbc to store the collected data in a database
- jms to send the collected data to a JMS broker (like ActiveMQ)
- camel to send the collected data to a Camel direct-vm/vm
endpoint of a route (it would create an internal route)
5/ Console/Kibana
The console is composed by two parts:
- a angularjs or bootstrap layer allowing to configure the
SLA and global settings
- embedded kibana instance with pre-configured dashboard
(when the elasticsearch appender is used). We will have a
set of already created lucene queries and a kind of
"Karaf/Camel/ActiveMQ/CXF" dashboard template. The kibana
instance will be embedded in Karaf (not external).
Of course, we have ready to use features, allowing to very
easily install modules that we want.
I named the prototype Karaf Decanter. I don't have
preference about the name, and the location of the code (it
could be as Karaf subproject like Cellar or Cave, or
directly in the Karaf codebase).
Thoughts ?
Regards
JB
--
Jean-Baptiste Onofré
[email protected] <mailto:[email protected]>
http://blog.nanthrax.net
Talend - http://www.talend.com
--
Charlie Mordant
Full OSGI/EE stack made with Karaf:
https://github.com/OsgiliathEnterprise/net.osgiliath.parent
--
Jean-Baptiste Onofré
[email protected]
http://blog.nanthrax.net
Talend - http://www.talend.com
