Data sources

Data sources are files that provide cluster operation data to data loaders. Data sources include daemon status files, log files, and event files.

Default behavior

The EGO allocation event data file (containing cluster operation data) is named ego.stream by default and has a maximum default size of 10 MB.

When the data file exceeds 10 MB, the events logger archives the file and creates a new data file. The events logger maintains only one archive file, overwriting the old archive with the new archive. The archive file is named ego.stream.0.

The data file and the archive file are both located in the EGO_CONFDIR/../work/data directory.

Interactions

Data sources provide sampling data loaders with cluster operation data (other data loaders obtain the data directly). The data loaders store this information as raw data in tables within the relational database.