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Copy JMX related files instead of moving to support jmx on k8s #5045

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Jan 13, 2021
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Copy JMX related files instead of moving to support jmx on k8s #5045

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7 changes: 6 additions & 1 deletion common/scala/copyJMXFiles.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,11 @@

if [[ $( ls /conf/jmxremote.* 2> /dev/null ) ]]
then
mv /conf/jmxremote.* /home/owuser
# JMX auth files would be mounted as a symbolic link (read-only mode)
# with `root` privileges by the k8s secret.
cp -rL /conf/jmxremote.* /home/owuser
rm -f /conf/jmxremote.* 2>/dev/null || true
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Note. The files can not be removed in the k8s because it's read-only mounted, so I hide the message and returns true. But in the default (Bare-metal, VM..) environment, the file can be removed.

bash-4.4$ rm -f jmxremote.*
rm: can't remove 'jmxremote.access': Resource busy
rm: can't remove 'jmxremote.password': Resource busy


# The owner must be `owuser` and the file only have read permission.
chmod 600 /home/owuser/jmxremote.*
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Note. The mounted files (/conf/jmxremote.*) cannot be used directly, it's limitation of JMX.

If the auth file has permissions other than read, the following error occurs:
"Password file read access must be restricted"

fi