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DOC Update: Log collection and running the container in non-root user mode #887

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Aug 17, 2023
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DOC Update: Log collection and running the container in non-root user mode #887

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Updated documentation for log collection and running the container in…
jvoravong Aug 15, 2023
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patch
jvoravong Aug 17, 2023
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Merge branch 'main' into crio-doc
jvoravong Aug 17, 2023
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13 changes: 10 additions & 3 deletions docs/advanced-configuration.md
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Expand Up @@ -514,10 +514,17 @@ Here is the summary of performance benchmarks run internally.
The data pipelines for these test runs involved reading container logs as they are being written, then parsing filename for metadata, enriching it with kubernetes metadata, reformatting data structure, and sending them (without compression) to Splunk HEC endpoint.

## Running the container in non-root user mode
Collecting logs often requires reading log files that are owned by the root user. By default, the container runs with `securityContext.runAsUser = 0` which gives the `root` user permission to read those files.
To run the container in `non-root` user mode, set `.agent.securityContext`. The log data permissions will be adjusted to match the securityContext configurations. For instance:
```yaml
agent:
securityContext:
runAsUser: 20000
runAsGroup: 20000
```

Collecting logs often requires reading log files that are owned by the root user. By default, the container runs with `securityContext.runAsUser = 0` which gives the `root` user permission to read those files. To run the container in `non-root` user mode, set `.agent.securityContext` to `20000` to cause the container to run the required file system operations as UID and GID `20000`. (it can be any other UID & GUI)

Note: `cri-o` container runtime did not work during internal testing.
Note: Running the collector agent for log collection in non-root mode is not currently supported in CRI-O and OpenShift environments at this time, for more details see the
[related GitHub feature request issue](https://github.com/signalfx/splunk-otel-collector-chart/issues/891).

## Network explorer
[Network explorer](network-explorer-architecture.md) allows you to collect network telemetry for ingest and analysis. This telemetry is sent to the Open Telemetry Collector Gateway.
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