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Time Influx is open source time series Influx DB is used to store stream metric values acquired from WCS.
Influx DB installation
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To install Influx DB to on CentOS 7, do the following:
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The installation procedure for Influx DB to on Debian / Ubuntu differs only in the method of adding the necessary repository.
Influx DB can be installed to the same server with monitoring backend server. By default, TCP port 8086 or UDP port 8089 is used to connect to Influx DB.
DB structure
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Influx DB setup
To configure Influx DB for metric storage do the following:
1. Set the following parameter in wcsoam.properties file
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metric_store=influx |
2. Set metrics retention policy in init_tsdb.properties file
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influx_retention_interval=48h0m0s |
By default, metrics are stored for 2 days (48 hours).
3. Launch DB setup script
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./init_tsdb.sh |
DB structure
The database to store metric values as time series . The database contains fields with the following keys:
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VIDEO_HEIGHT VIDEO_WIDTH VIDEO_RATE VIDEO_SYNC VIDEO_FPS VIDEO_NACK VIDEO_PLI VIDEO_CODEC AUDIO_SYNC AUDIO_RATE AUDIO_LOST AUDIO_CODEC |
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Examples of data selection from Influx DB
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The data Data can be selected from Influx DB for the a stream, for which node and mediasession media session identifiers are known:
1. Enter Influx DB command line interface
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will show time series list, every of them which corresponds to stream published to certain node in certain mediasessionmedia session, for example
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name: measurements name ---- 3-7ecbd270-123e-11e9-bb40-b96debd59887 3-93412000-123b-11e9-8357-3d4423e30d73 |
4. Select video bitrate values for stream on node 3 in mediasession media session 7ecbd270-123e-11e9-bb40-b96debd59887
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