Oracle Private Database Cloud REST APIs

Tags

apis, Automation, database as a service, dbaas, em12c, private cloud

While we spend a lot of time developing GUI for our private cloud features – like the self service portal, setup screens, etc, a large percentage of our customers use these features via our APIs, both EMCLI and REST based.

Q: So why would anyone not use the out of the box cloud (self service) portal and use the APIs instead?

A: Well, there are many reasons:

1. You already have a custom cloud portal that you use to deploy non-Oracle products and now you would like Oracle products to be part of it
2. You want cloud related actions to be part of a larger orchestration flow. For example, prior to provisioning, you want to integrate an approval workflow, and then post-provision update your asset management system with the service details.
3. You want to integrate the cloud actions with our IT service desk or ticketing systems
4. Integrate actions like cloning of databases (Snap Clone), or provisioning of middleware and applications with your continuous integration or devops process.

I am sure there are more reasons, but this list should do for now.

Q: What kind of APIs does EM12c expose?

A: Typically, we identify two key roles in the Private Cloud space:

1. Service Providers – This role represents the various administrators like DBAs, sysadmins, storage admins, etc that help setup and manage the private cloud infrastructure. EM12c provides EMCLI verbs and RESTful APIs for all actions that can be performed by this role.
2. Service Consumers – This role represents the users who request and consume cloud based services like databases, VMs, middleware servers, etc. This role can access the cloud services from either the out-of-the-box cloud portal, or using RESTful APIs.

This blog post is focused on the the RESTful APIs provided for Service Consumers. The best way to understand and learn about these APIs is to see them in action. In the video below, i explain the various concepts (note i assume that you are already familiar with EM12c DBaaS concepts, if not check the references section), demo the cloud portal, and then perform the same actions using RESTful APIs. The demo is approx. 23 minutes long, so grab a drink before you get started.

The Python script used to demo the APIs can be found here. Note: i am posting this script as sample implementation, so there is no formal support available for it. Also, the demo was recorded on the latest version of EM – EM12c R4 Plugin Update 1.

Finally, I am often asked about customer examples. Till date, i have seen customers use our REST APIs from Chef recipes, shell scripts using the curl command, from 3rd party tools like Service Now and VMware vCAC, custom Java based applications, etc. Unfortunately, i am not an expert on any of these 3rd party tools, so i probably cannot tell you how the integration was done, but i would be more than happy to help you with the EM REST APIs.

Hopefully this was a good introduction to our EM12c Database as a Service (Private Database Cloud) REST APIs. I encourage you to play with the APIs and post code examples for the benefit of other users.

References:

Screenwatch: Oracle Enterprise Manager 12c: Build Service Catalog with DBaaS

Documentation: Cloud Administration Guide, REST API Chapter

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Editing EM12c Jobs in Bulk

Tags

em12c, emcli, job system

I recently received requests for suggestions on how to edit EM12c jobs in bulk. The two examples that were presented to me were:

1. Change the start time of 70+ jobs
2. Change the oracle home path in 80+ RMAN script jobs

So how do we do this?

Option 1: Log into EM12c, navigate to each and every job, click edit and make the desired changes. This of course gets boring after the 4th job, not to mention the potential for developing carpel tunnel syndrome.

Option 2: The other choice is to scan the EM repository tables and try to update the correct columns. Unfortunately, the EM schema is not that simple to follow and your changes to the repository may not take effect as they haven’t updated all relevant references or have not been called from the correct set of APIs. BTW, this also violates our recommendation to never make changes to the EM schema without specific instructions from Oracle support or development, and has the potential of messing up your repository.

Option 3: This makes use of the job system emcli verbs, and is the only viable solution to the problem. The process would be as follows:

1. Use emcli verb “describe_job” to dump all required jobs into separate properties files (I am assuming you have list of job names that needs to be edited)
2. Mass-edit the property files to change the start date or any other parameters you like
3. Create new jobs using these property files with slightly different names using the emcli verb ”create_job”
4. Once satisfied with newly created jobs, remove older jobs using “delete_job” emcli verb

Documentation for these verbs can be found here.

Now you could argue that option 3 is not perfect either, and i would give you credit for making that argument. Hence an ER has been filed to provide a formal ‘edit_jobs’ verb which will allow you to edit jobs via emcli either in bulk or in a loop. Until then, hopefully this serves as a good work around.