[ovirt-users] 4.4 regression: engine-setup fails if admin password in answerfile contains a "%"

I encountered this error when deploying the Hosted Engine via Cockpit: [ INFO ] TASK [ovirt.engine-setup : Run engine-setup with answerfile] [ ERROR ] fatal: [localhost -> engine.ovirt.trashnet.xyz]: FAILED! => {"changed": true, "cmd": ["engine-setup", "--accept-defaults", "--config-append=/root/ovirt-engine-answers"], "delta": "0:00:01.396490", "end": "2020-05-22 18:32:41.965984", "msg": "non-zero return code", "rc": 1, "start": "2020-05-22 18:32:40.569494", "stderr": "", "stderr_lines": [], "stdout": "[ INFO ] Stage: Initializing\n[ ERROR ] Failed to execute stage 'Initializing': '%' must be followed by '%' or '(', found: '%JUUj'\n[ INFO ] Stage: Clean up\n Log file is located at /var/log/ovirt-engine/setup/ovirt-engine-setup-20200522183241-c7d1kh.log\n[ ERROR ] Failed to execute stage 'Clean up': 'NoneType' object has no attribute 'cleanup'\n[ INFO ] Generating answer file '/var/lib/ovirt-engine/setup/answers/20200522183241-setup.conf'\n[ INFO ] Stage: Pre-termination\n[ INFO ] Stage: Termination\n[ ERROR ] Execution of setup failed", "stdout_lines": ["[ INFO ] Stage: Initializing", "[ ERROR ] Failed to execute stage 'Initializing': '%' must be followed by '%' or '(', found: '%JUUj'", "[ INFO ] Stage: Clean up", " Log file is located at /var/log/ovirt-engine/setup/ovirt-engine-setup-20200522183241-c7d1kh.log", "[ ERROR ] Failed to execute stage 'Clean up': 'NoneType' object has no attribute 'cleanup'", "[ INFO ] Generating answer file '/var/lib/ovirt-engine/setup/answers/20200522183241-setup.conf'", "[ INFO ] Stage: Pre-termination", "[ INFO ] Stage: Termination", "[ ERROR ] Execution of setup failed"]} The important bit is this: Failed to execute stage 'Initializing': '%' must be followed by '%' or '(', found: '%JUUj'" Hey! Those are the last few characters of the admin password. Note that I don't mean the root password to the VM, but the one for the "admin" user of the web interface. I added some debug lines to the Ansible play to see the answerfile that was being generated. OVESETUP_CONFIG/adminPassword=str:&6&yGfcWf#b%JUUj Apparently engine-setup can no longer handle an answerfile with a "%" character in it. This same password worked in 4.3. Once I changed the admin password, installation progressed normally.