Based on the initial input in the question, slightly adapted the following seems to work for me (1.27.0) docker run --rm --name nifi -p 8080:8080 \ -e NIFI_WEB_HTTP_PORT=8080 \ -e NIFI_WEB_HTTPS_PORT= \ -e NIFI_WEB_HTTPS_HOST= \ -e NIFI_SECURITY_KEYSTORE= \ -e NIFI_SECURITY_KEYSTOREPASSWD= \ -e NIFI_SECURITY_KEYPASSWD= \ -e NIFI_SECURITY_TRUSTSTORE= \ -e NIFI_SECURITY_TRUSTSTOREPASSWD= \ apache/nifi:1.27.0 --- --- from container nifi@xxxxxxxxxxxx:/opt/nifi/nifi-toolkit-current/bin$ ./cli.sh _ ___ _ Apache (_) .' ..](_) , _ .--. __ _| |_ __ )\ [ `.-. | [ |'-| |-'[ | / \ | | | | | | | | | | ' ' [___||__][___][___] [___]', ,' `' CLI v1.27.0 Type 'help' to see a list of available commands, use tab to auto-complete. Session loaded from /home/nifi/.nifi-cli.config #> nifi get-root-id xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx ... View more