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Note
CentOS/RHEL 7 is EOL and yum commands on CentOS 7 now fail with "Could not retrieve mirrorlist http://mirrorlist.centos.org/". There is a workaround, but please plan a migration to RockyLinuxRocky Linux/RHEL 8.
jstack needs to be installed, and may not be installed by default. To check whether jstack is installed or not please run the following command:
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