# Regex doesn't work - metricbeat system module

**URL:** <https://discuss.elastic.co/t/regex-doesnt-work-metricbeat-system-module/182177>\
**Category:** Beats\
**Created:** [May 22, 2019, 8:55am UTC](https://discuss.elastic.co/t/regex-doesnt-work-metricbeat-system-module/182177 "2019-05-22T08:55:01Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![jasony](https://avatars.discourse-cdn.com/v4/letter/j/a3d4f5/32.png) [@jasony](https://discuss.elastic.co/u/jasony)\
**Post date:** [May 22, 2019, 8:55am UTC](https://discuss.elastic.co/t/regex-doesnt-work-metricbeat-system-module/182177/1 "2019-05-22T08:55:01Z")

</div>

```
metricbeat.modules:
- module: system
  metricsets: ["process"]
  enabled: true
  period: 60s
  processes: ['^.*logstash.*$']
  fields:
    dc: doj-dev
    host: "doj-dev-elk-col-01"
    cluster_type: "collector"
...

$ ps -ef | grep logstash
onmadm 30293 1 0 Apr30 ? 03:12:49 /bin/java -Xms1g -Xmx1g -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Djruby.compile.invokedynamic=true -Djruby.jit.threshold=0 -XX:+HeapDumpOnOutOfMemoryError -Djava.security.egd=file:/dev/urandom -cp /app/logstash/logstash-core/lib/jars/animal-sniffer-annotations-1.14.jar:/app/logstash/logstash-core/lib/jars/commons-codec-1.11.jar:/app/logstash/logstash-core/lib/jars/commons-compiler-3.0.8.jar:/app/logstash/logstash-core/lib/jars/error_prone_annotations-2.0.18.jar:/app/logstash/logstas -core/lib/jars/google-java-format-1.1.jar:/app/logstash/logstash-core/lib/jars/gradle-license-report-0.7.1.jar:/app/logstash/logstash-core/lib/jars/guava-22.0.jar:/app/logstash/logstash-core/lib/jars/j2objc-annotations-1.1.jar:/app/logstash/logstash-core/lib/jars/jackson-annotations-2.9.8.jar:/app/logstash/logstash-core/lib/jars/jackson-core-2.9.8.jar:/app/logstash/logstash-core/lib/jars/jackson-databind-2.9.8.jar:/app/logstash/logstash-core/lib/jars/jackson-dataformat-cbor-2.9.8.jar:/app/logstash/logstash-core/lib/jars/janino-3.0.8.jar:/app/logstash/logstash-core/lib/jars/javassist-3.22.0-GA.jar:/app/logstash/logstash-core/lib/jars/jruby-complete-9.2.6.0.jar:/app/logstash/logstash-core/lib/jars/jsr305-1.3.9.jar:/app/logstash/logstash-core/lib/jars/log4j-api-2.9.1.jar:/app/logstash/logstash-core/lib/jars/log4j-core-2.9.1.jar:/app/logstash/logstash-core/lib/jars/log4j-slf4j-impl-2.9.1.jar:/app/logstash/logstash-core/lib/jars/logstash-core.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.core.commands-3.6.0.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.core.contenttype-3.4.100.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.core.expressions-3.4.300.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.core.filesystem-1.3.100.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.core.jobs-3.5.100.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.core.resources-3.7.100.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.core.runtime-3.7.0.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.equinox.app-1.3.100.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.equinox.common-3.6.0.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.equinox.preferences-3.4.1.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.equinox.registry-3.5.101.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.jdt.core-3.10.0.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.osgi-3.7.1.jar:/app/logstash/logstash-core/lib/jars/org.eclipse.text-3.5.101.jar:/app/logstash/logstash-core/lib/jars/slf4j-api-1.7.25.jar org.logstash.Logstash -f /app/logstash/jmx_mon.conf --path.data /appdata/logstash-jmx-mon --path.logs /applog/logstash-jmx-mon

```

hello,  
i am trying to collect a specific process information and use regex in "processes" field with Metricbeat module "system", but my .yml is NOT getting any processes information.

does my regex wrong? processes: ['^._logstash._$'] if so, please advice.

thank you!

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [June 19, 2019, 10:55am UTC](https://discuss.elastic.co/t/regex-doesnt-work-metricbeat-system-module/182177/2 "2019-06-19T10:55:02Z")

</div>

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