@winbob
- What does the output of "ps -ef|grep -i nifi" return on your server where NiFi-Registry is installed?
- Is this an Apache NiFi-Registry install or a Cloudera managed NiFi-Registry install? (I see you mentioned you're not sure how it was installed, but uninstalling the service properly differs depending on how it was installed.).
Assuming this is just an Apache NiFi-Registry installation on Linux, the most common installation method is simply to unpack the tar.gz NiFi-registry file in user defined install location (output from "ps -ef" command will help determine where it is installed). Then the user would configure the nifi-registry.properties file in the conf directory and start the service via "<install/unpack directory>/bin/nifi-registry.sh start" command.
1. So step one is to stop NiFi-Registry:
- Check to see if NiFi-Registry was installed as a linux service "systemctl status nifi-registry". If this returns then NiFi-Registry was installed as a service. If it returns unknown service then it was not. Assuming this returns you can stop the service using "systemctl stop nifi-registry". Then issue following commands to remove the linux service setup (does not uninstall product so will still need to complete steps 2 forward).
systemctl disable nifi-registry
rm /etc/systemd/system/nifi-registry
rm /usr/lib/systemd/system/nifi-registry
- If not a managed linux service, stop NiFi-Registry using "<install/unpack directory>/bin/nifi-registry.sh stop" ("ps -ef | grep -i nifi" should not return any processes for NiFi-Registry after executing this command).
2. Now you must inspect some NiFi-Registry conf directory files to identify any directory location defined by the user who installed the product. (default would have them all located with the directory tree where NiFi-Registry was unpacked, but very often these path are manually changed). Search the following configuration files for directory paths:
- nifi-registry.properties
- authorizers.xml
- providers.xml
- logback.xml
NOTE: if any of the directory property paths start with "./" then NiFi-Registry is building the directory path tree within the existing NiFi-Registry installation path tree.
3. Once you have all the path external to the NiFi-Registry installation base path located, you can start deleting these directories and there sub-directories and contents.
4. Delete the NiFi-Registry installation directory tree.
The product is now uninstalled.
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Thank you,
Matt
