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Merge pull request #498 from Mario-Hofstaetter/master

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Fix README for process whitelist and expand docs
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Calle Pettersson 2020-04-04 15:15:54 +02:00 committed by GitHub
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README.md
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@ -97,11 +97,9 @@ The prometheus metrics will be exposed on [localhost:9182](http://localhost:9182
### Enable only process collector and specify a custom query
.\wmi_exporter.exe --collectors.enabled "process" --collector.process.processes-where "Name LIKE 'firefox%'"
.\wmi_exporter.exe --collectors.enabled "process" --collector.process.whitelist="firefox.+"
When there are multiple processes with the same name, WMI represents those after the first instance as `process-name#index`. So to get them all, rather than just the first one, the query needs to be a wildcard search using a `%` character.
Please note that in Windows batch scripts (and when using the `cmd` command prompt), the `%` character is reserved, so it has to be escaped with another `%`. For example, the wildcard syntax for searching for all firefox processes is `firefox%%`.
When there are multiple processes with the same name, WMI represents those after the first instance as `process-name#index`. So to get them all, rather than just the first one, the [regular expression](https://en.wikipedia.org/wiki/Regular_expression) must use `.+`. See [process](docs/collector.process.md) for more information.
## License

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docs/collector.process.md
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@ -26,9 +26,17 @@ metrics.
### Example
To match all firefox processes: `--collector.process.whitelist="firefox.+"`.
Note that multiple processes with the same name will be disambiguated by
Windows by adding a number suffix, such as `firefox#2`. Your regexp must take
Windows by adding a number suffix, such as `firefox#2`. Your [regexp](https://en.wikipedia.org/wiki/Regular_expression) must take
these suffixes into consideration.
:warning: The regexp is case-sensitive, so `--collector.process.whitelist="FIREFOX.+"` will **NOT** match a process named `firefox` .
To specify multiple names, use the pipe `|` character:
```
--collector.process.whitelist="firefox.+|FIREFOX.+|chrome.+"
```
This will match all processes named `firefox`, `FIREFOX` or `chrome` .
## Metrics
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