Streaming Media Service¶
This page gives an overview of the Streaming Media Service, describing its current status, where and how it's developed and deployed, and who is responsible for maintaining it.
Warning
This service is being decommissioned. Please use alternative services for publishing new content (see the SMS closure news article for more information).
Service Description¶
The Streaming Media Service (SMS) provides a video and audio transcoding and hosting service.
Service Status¶
The Streaming Media Service is currently live/decommissioning.
Contact¶
Technical queries and support should be directed to sms-support@uis.cam.ac.uk and will be picked up by a member of the team working on the service. To ensure that you receive a response, always direct requests to sms-support@uis.cam.ac.uk rather than reaching out to team members directly.
Issues discovered in the service or new feature requests should be opened as GitLab issues here.
Environments¶
The Streaming Media Service is currently deployed to the following environments:
| Name | URL | Supporting VMs |
|---|---|---|
| Production | https://sms.cam.ac.uk | sms-node1.sms.cam.ac.uk (web application) |
| sms-node2.sms.cam.ac.uk (web application) | ||
| smew.sms.csx.cam.ac.uk (downloads) | ||
| goldeneye.sms.csx.cam.ac.uk (downloads) | ||
| sms-nfs1.sms.private.cam.ac.uk (ceph->nfs gateway) | ||
| sms-nfs2.sms.private.cam.ac.uk (ceph->nfs gateway) | ||
| ruddy.sms.cam.ac.uk (nfs server) | ||
| pintail.sms.cam.ac.uk (nfs server) | ||
| pochard.sms.cam.ac.uk (nfs server) | ||
| transcode1.sms.private.cam.ac.uk (transcoding) | ||
| transcode2.sms.private.cam.ac.uk (transcoding) | ||
| transcode3.sms.private.cam.ac.uk (transcoding) | ||
| transcode4.sms.private.cam.ac.uk (transcoding) | ||
| sms-live-db.srv.uis.private.cam.ac.uk (DB) provided by Moa |
Source code¶
The source code for the Streaming Media Service is spread over the following repositories:
| Repository | Description |
|---|---|
| Application Server | The source code for the main application server |
| Transcode worker | The source code for the transcode worker |
| Infrastructure | Ansible infrastructure code for some management tasks |
Technologies used¶
The following gives an overview of the Streaming Media Service is built on.
| Category | Language | Framework(s) |
|---|---|---|
| Web application | Groovy 2.4.12 | Grails 1.3.10 |
| DB | Postgres | 10.5 |
Operational documentation¶
The following gives an overview of how the Streaming Media Service is deployed and maintained.
How and where the Streaming Media Service is deployed¶
The Streaming Media Service application is deployed using RPM packages. These are built by Gitlab CI in the Application Server repository. These can be copied to the Bes RPM package repository run by infra-sas@uis by following these instructions. As a last resort RPMs can be manually copied and installed.
Deploying a new release¶
Once the RPM packages are added to the Bes RPM package repository
installation is simply a matter of running zypper up as root.
Monitoring¶
The streaming Media Service is monitored by nagios There is also a status page that checks the various components of the service and returns 200 if everything is functioning normally.
Backups¶
See legacy application backups
Other Documentation¶
Service Management and tech lead¶
The service owner for the Streaming Media Service is Abraham Martin.
The service manager for the Streaming Media Service is Stephen Ison.
The tech lead for the Streaming Media Service is Stephen Ison.