This is fantastic Casey! There's a lot of raw information feeds we can use here directly in Juju. I like it!
Thanks for sharing this :) All the best Charles On Mon, Oct 3, 2016 at 10:22 AM Casey Marshall <[email protected]> wrote: > I’m pleased to announce Juju Metrics, new in Juju 2.0! > > Knowing an application's configuration isn’t enough to effectively operate > and manage it. Consider that a well-designed application will have as few > configurable parameters as possible. As an operator, you may find yourself > wanting to know more about the resources that an application in your model > consumes and provides -- resources such as: > > - > > Storage GiB used > - > > Number of user accounts > - > > Number of recently active users > - > > Active database connections > > > Juju Metrics complete the operational picture with application > observability; by modeling, sampling and collecting measurements of > resources such as these. Juju collects application metrics at a cadence > appropriate for taking a model-level assessment of application utilization > and capacity planning. Charm authors and communities can now collaborate on > figuring out the critical metrics for service assurance and ops, and share > that through the charms. > > There are many instrumentation and time-series data collection solutions > supporting devops. Juju’s metrics complement these fine-grained, > lower-level data sources with a model-level overview -- possibly a starting > point for deeper analysis. > > At a glance, operators can pull the most recent measurements across the > entire model: > > $ juju metrics --all > UNIT TIMESTAMP METRIC VALUE > auth-sso/0 2016-09-19T22:14:29Z users 28 > auth-sso/0 2016-09-19T22:14:31Z tokens 6 > ceph-mon/0 2016-09-19T22:15:36Z gb-usage 5.2711902345 > webapp/0 2016-09-19T22:17:57Z requests 11903 > webapp/1 2016-09-19T22:17:52Z requests 13719 > > View measurements for specific units or applications: > > $ juju metrics webapp/0 > UNIT TIMESTAMP METRIC VALUE > webapp/0 2016-09-19T22:17:57Z requests 13719 > > $ juju metrics sso-auth > auth-sso/0 2016-09-19T22:14:29Z users 28 > auth-sso/0 2016-09-19T22:14:31Z tokens 6 > > How about adding metrics to a charm? With the reactive framework, it’s > quick and easy! > > > 1. > > Add layer:metrics to your charm’s layer.yaml > 2. > > Declare measurements in your charm’s metrics.yaml > > > metrics.yaml declares each metric’s type and the command line that > measures it. For example, the hypothetical auth-sso charm in the example > above might declare metrics: > > metrics: > users: > type: gauge > description: Number of users > command: scripts/count_users.py > tokens: > type: gauge > description: Number of active tokens > command: scripts/count_tokens.py > > The command lines given in command: attributes above simply need to write > the current gauge value -- a positive decimal number -- to standard output. > Juju 2.0 will initially support type: gauge metrics for the operational > use cases shown above; others such as type: absolute are experimental, > and will be better supported in Juju 2.1. > > I’d like to encourage you to kick the tires on this new feature, and let’s > start measuring things in our charms! > > For more information, here are links to documentation: > > Metrics, User Guide: https://jujucharms.com/docs/stable/charms-metrics > > Metrics, Developer Guide: > https://jujucharms.com/docs/stable/developer-metrics > > -Casey > -- > Juju mailing list > [email protected] > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/juju > -- Juju Charmer Canonical Group Ltd. Ubuntu - Linux for human beings | www.ubuntu.com Juju - The fastest way to model your application | www.jujucharms.com
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