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https://github.com/serkan-ozal/otel-bash
Bash library to instrument and trace bash scripts automatically with OpenTelemetry
https://github.com/serkan-ozal/otel-bash
bash bash-script bash-scripting instrumentation monitoring observability open-telemetry opentelemetry tracing
Last synced: 3 months ago
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Bash library to instrument and trace bash scripts automatically with OpenTelemetry
- Host: GitHub
- URL: https://github.com/serkan-ozal/otel-bash
- Owner: serkan-ozal
- License: apache-2.0
- Created: 2023-07-14T16:18:28.000Z (over 1 year ago)
- Default Branch: master
- Last Pushed: 2023-09-19T18:55:42.000Z (over 1 year ago)
- Last Synced: 2024-09-27T07:01:42.744Z (3 months ago)
- Topics: bash, bash-script, bash-scripting, instrumentation, monitoring, observability, open-telemetry, opentelemetry, tracing
- Language: Shell
- Homepage:
- Size: 424 KB
- Stars: 40
- Watchers: 3
- Forks: 2
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
Awesome Lists containing this project
README
# OTEL (OpenTelemetry) Bash
`otel-bash` is a bash library to instrument, debug and trace bash scripts automatically with OpenTelemetry.
## Prerequisites
- Bash `3.2+` or `4.x`
- [`otel-cli` v1](https://github.com/serkan-ozal/otel-cli)
## Setup
1. Add `otel-bash` in the beginning (for ex. just after bash she-bang `#!/bin/bash`) of your script
- Source `otel-bash.sh` in your script:
```bash
. "${OTEL_BASH_PATH}/otel_bash.sh"
# or
# source "${OTEL_BASH_PATH}/otel_bash.sh"
```
- or get the **latest** version of the `otel-bash` from remote:
```bash
. /dev/stdin <<< "$(curl -s https://raw.githubusercontent.com/serkan-ozal/otel-bash/master/otel_bash.sh)"
# or if your bash supports process substitution (version "4.x")
# . <(curl -s https://raw.githubusercontent.com/serkan-ozal/otel-bash/master/otel_bash.sh)
```
- or get specific version (`v`) of the `otel-bash` from remote (For example, `v0.0.1` for the `0.0.1` version of the `otel-bash`):
```bash
. /dev/stdin <<< "$(curl -s https://raw.githubusercontent.com/serkan-ozal/otel-bash/v0.0.1/otel_bash.sh)"
# or if your bash supports process substitution (version "4.x")
# . <(curl -s https://raw.githubusercontent.com/serkan-ozal/otel-bash/v0.0.1/otel_bash.sh)
```
2. Run your script by configuring OTLP `HTTP/JSON` endpoint
```bash
OTEL_EXPORTER_OTLP_ENDPOINT= ./.sh
```
- ### Run With Jaeger
- Run Jaeger as OTLP HTTP/JSON endpoint active:
```bash
docker run -d --name jaeger -p 4318:4318 -p 16686:16686 jaegertracing/all-in-one:1.47
```
- Make sure that Jaeger works by opening Jaeger UI at [http://localhost:16686](http://localhost:16686)
- Run your script with Jaeger OTLP HTTP/JSON endpoint config:
```bash
OTEL_EXPORTER_OTLP_ENDPOINT=http://localhost:4318 ../.sh
```
- Search your traces in Jaeger UI
- And see your trace in Jaeger UI
- ### Run With OTEL SaaS Vendors
- Run your script with your OTEL Saas vendor OTLP HTTP/JSON endpoint and API authentication token configs:
```bash
OTEL_EXPORTER_OTLP_ENDPOINT= \
OTEL_EXPORTER_OTLP_HEADERS== \
./.sh
```
## Configuration
| Environment Variable | Mandatory | Choices | Default Value | Description | Example |
|----------------------------------------------------------------------|-----------|------------------------------------------------------|---------------|------------------------------------------------|-----------------------------------------------------------------------|
| `OTEL_EXPORTER_OTLP_ENDPOINT=` | YES | | | OTEL Exporter OTLP endpoint | `OTEL_EXPORTER_OTLP_ENDPOINT=https://collector.otel.io` |
| `OTEL_EXPORTER_OTLP_HEADERS==` | NO | | | OTEL Exporter OTLP endpoint API auth token | `OTEL_EXPORTER_OTLP_HEADERS=x-vendor-api-key=abcdefgh-12345678` |
| `TRACEPARENT=` | NO | | | Traceparent header in W3C trace context format | `TRACEPARENT=00-84b54e9330faae5350f0dd8673c98146-279fa73bc935cc05-01` |
| `OTEL_CLI_SERVER_PORT=` | NO | | `7777` | OTEL CLI server port to start on | `OTEL_CLI_SERVER_PORT=1234` |
| `OTEL_BASH_LOG_LEVEL=` | NO | - `DEBUG`
- `INFO`
- `WARN`
- `ERROR` | `WARN` | Configure log level | `OTEL_BASH_LOG_LEVEL=DEBUG` |
## Examples
You can find examples under `examples` directory:
- [`Release Process` example](./examples/release-process/README.md)
## Roadmap
- Export traces to `otel-cli` over local HTTP call instead of running `otel-cli` process to reduce `otel-cli` overhead
## Issues and Feedback
[](https://github.com/serkan-ozal/otel-bash/issues?q=is%3Aopen+is%3Aissue)
[](https://github.com/serkan-ozal/otel-bash/issues?q=is%3Aissue+is%3Aclosed)
Please use [GitHub Issues](https://github.com/serkan-ozal/otel-bash/issues) for any bug report, feature request and support.
## Contribution
[](https://github.com/serkan-ozal/otel-bash/pulls?q=is%3Aopen+is%3Apr)
[](https://github.com/serkan-ozal/otel-bash/pulls?q=is%3Apr+is%3Aclosed)
[]()
If you would like to contribute, please
- Fork the repository on GitHub and clone your fork.
- Create a branch for your changes and make your changes on it.
- Send a pull request by explaining clearly what is your contribution.
> Tip:
> Please check the existing pull requests for similar contributions and
> consider submit an issue to discuss the proposed feature before writing code.
## License
Licensed under [Apache License 2.0](LICENSE).