Root 権限で実行：

wget https://archive.cloudera.com/CFM/csd/1.0.0.0/NIFI-1.9.0.1.0.0.0-90.jar -P /opt/cloudera/csd/
wget https://archive.cloudera.com/CFM/csd/1.0.0.0/NIFICA-1.9.0.1.0.0.0-90.jar -P /opt/cloudera/csd/
wget https://archive.cloudera.com/CFM/csd/1.0.0.0/NIFIREGISTRY-0.3.0.1.0.0.0-90.jar -P /opt/cloudera/csd/
chown cloudera-scm:cloudera-scm /opt/cloudera/csd/*
chmod 644 /opt/cloudera/csd/*

その後CM再起動：

sudo service cloudera-scm-server restart

NiFiがサービス追加のメニューに、出ました！！！