Andy LoPresto created NIFI-5556:
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Summary: Expose JVM debugging via command-line argument
Key: NIFI-5556
URL: https://issues.apache.org/jira/browse/NIFI-5556
Project: Apache NiFi
Issue Type: New Feature
Components: Configuration, Tools and Build
Affects Versions: 1.7.1
Reporter: Andy LoPresto
Recently I have been performing remote JVM debugging on a number of NiFi
components -- core instances, TLS toolkit, etc. Currently, to enable/disable
JVM debugging requires manually modifying the {{bootstrap.conf}} file or the
{{*.sh}} file and (un)commenting/adding the following line(s):
*bootstrap.conf*
{code}
java.arg.debug=-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=8000
{code}
*tls-toolkit.sh*
{code}
# exec "${JAVA}" -cp "${CLASSPATH}" ${JAVA_OPTS:--Xms12m -Xmx24m}
org.apache.nifi.toolkit.tls.TlsToolkitMain "$@"
exec "${JAVA}" -cp "${CLASSPATH}" ${JAVA_OPTS:--Xms12m -Xmx24m}
-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=8000
org.apache.nifi.toolkit.tls.TlsToolkitMain "$@"
{code}
I propose we decide on a standard command-line flag or environment variable
which can be set to enable/disable JVM debugging (and optional flag/variable to
enable/disable *suspend*) in order to make this easier for developers.
My suggestion is to follow a pattern like Kafka uses, as proposed in [this
StackOverflow answer|https://stackoverflow.com/a/52021140/70465].
This can be copied to NiFi Registry, MiNiFi Java, etc.
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