Manual procedure for Horizon Agent for Linux:
1. Based on your Linux distribution, one of following files will be present:
/usr/lib/vmware/viewagent/bin/StartAgent.sh
/etc/rc.d/init.d/viewagent
/etc/init/viewagent.conf
/etc/init.d/viewagent.suse
Find the one on your VM and edit it as the root user.
2. Find the text: -Dfile.encoding=UTF-8
3. Modify it to: -Dlog4j2.formatMsgNoLookups=true -Dfile.encoding=UTF-8 (Do not use copy/paste. Type the update manually.)
For example:
Before: exec ${exec} -Dfile.encoding=UTF-8
After: exec ${exec} -Dlog4j2.formatMsgNoLookups=true -Dfile.encoding=UTF-8
4. Save and exit the file.
5. Restart viewagent service by running command: sudo service viewagent restart
Verification procedure for Horizon Agent for Linux:
1. Run the following command in the agent: ps axf | grep --color log4j2.formatMsgNoLookups | grep -v grep
2. There should be output from the above command. If there is no output the Horizon Linux Agent was not successfully modified. Redo Step 1 above on the Horizon Linux Agent.
Output example:
[root@fips-rh6 ~]# ps axf | grep --color=always log4j2.formatMsgNoLookups | grep -v grep
2364 ? Sl 3:17 /usr/lib/vmware/viewagent/jre/bin/java -Dlog4j2.formatMsgNoLookups=true -Dfile.encoding=UTF-8 -Djuds.folder.preferred=/usr/lib/vmware/viewagent -showversion -Xmx512m
Source: https://kb.vmware.com/s/article/87073
