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af3004c8cd
JvmOptionsParser adds support for ${VAR:default} syntax when parsing jvm.options
- allow dynamic resolution of environment variables in the jvm.options file
- enables fallback to default value when the environment variable is not set
(cherry picked from commit ef36df6b81)
Co-authored-by: kaisecheng <69120390+kaisecheng@users.noreply.github.com>
90 lines
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2.9 KiB
Text
90 lines
No EOL
2.9 KiB
Text
## JVM configuration
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# Xms represents the initial size of total heap space
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# Xmx represents the maximum size of total heap space
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-Xms1g
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-Xmx1g
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################################################################
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## Expert settings
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################################################################
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##
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## All settings below this section are considered
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## expert settings. Don't tamper with them unless
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## you understand what you are doing
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##
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################################################################
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## GC configuration
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11-13:-XX:+UseConcMarkSweepGC
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11-13:-XX:CMSInitiatingOccupancyFraction=75
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11-13:-XX:+UseCMSInitiatingOccupancyOnly
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## Locale
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# Set the locale language
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#-Duser.language=en
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# Set the locale country
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#-Duser.country=US
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# Set the locale variant, if any
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#-Duser.variant=
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## basic
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# set the I/O temp directory
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#-Djava.io.tmpdir=${HOME}
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# set to headless, just in case
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-Djava.awt.headless=true
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# ensure UTF-8 encoding by default (e.g. filenames)
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-Dfile.encoding=UTF-8
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# use our provided JNA always versus the system one
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#-Djna.nosys=true
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# Turn on JRuby invokedynamic
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-Djruby.compile.invokedynamic=true
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## heap dumps
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# generate a heap dump when an allocation from the Java heap fails
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# heap dumps are created in the working directory of the JVM
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-XX:+HeapDumpOnOutOfMemoryError
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# specify an alternative path for heap dumps
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# ensure the directory exists and has sufficient space
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#-XX:HeapDumpPath=${LOGSTASH_HOME}/heapdump.hprof
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## GC logging
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#-Xlog:gc*,gc+age=trace,safepoint:file=@loggc@:utctime,pid,tags:filecount=32,filesize=64m
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# log GC status to a file with time stamps
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# ensure the directory exists
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#-Xloggc:${LS_GC_LOG_FILE}
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# Entropy source for randomness
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-Djava.security.egd=file:/dev/urandom
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# Copy the logging context from parent threads to children
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-Dlog4j2.isThreadContextMapInheritable=true
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# FasterXML/jackson defaults
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#
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# Sets the maximum string length (in chars or bytes, depending on input context).
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# This limit is not exact and an exception will happen at sizes greater than this limit.
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# Some text values that are a little bigger than the limit may be treated as valid but no
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# text values with sizes less than or equal to this limit will be treated as invalid.
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# This value should be higher than `logstash.jackson.stream-read-constraints.max-number-length`.
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# The jackson library defaults to 20000000 or 20MB, whereas Logstash defaults to 200MB or 200000000 characters.
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-Dlogstash.jackson.stream-read-constraints.max-string-length=200000000
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#
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# Sets the maximum number length (in chars or bytes, depending on input context).
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# The jackson library defaults to 1000, whereas Logstash defaults to 10000.
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-Dlogstash.jackson.stream-read-constraints.max-number-length=10000
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#
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# Sets the maximum nesting depth. The depth is a count of objects and arrays that have not
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# been closed, `{` and `[` respectively.
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#-Dlogstash.jackson.stream-read-constraints.max-nesting-depth=1000 |