| Utility to Migrate Ranger Config into Ambari (from a previous manual install) |
| ----------------------------------------------------------------------------- |
| |
| Pre-requisites: |
| ---------------- |
| * Ambari Server (2.0.0) installed on one of the host of the cluster. |
| * Ranger service is manually installed outside Ambari. |
| * If user had Ambari 1.7.0 installed, Ambari needs to be upgraded to 2.0.0, before this script is run. |
| * Ranger service is expected to be up and running. |
| * Whichever component plugin needs to imported, that component should be up and running in Ambari server. |
| * Whichever component plugin needs to be imported, that plugin needs to be installed as well as enabled independently by the user. |
| * The installation folder paths for each component is as follows : |
| * For Ranger Admin service: /usr/hdp/<hdp_vers>/ranger-admin |
| * For Ranger Usersync service: /usr/hdp/<hdp_vers>/ranger-usersync |
| * For Ranger Hbase plugin: /usr/hdp/<hdp_vers>/ranger-hbase-plugin |
| * For Ranger Hdfs plugin: /usr/hdp/<hdp_vers>/ranger-hdfs-plugin |
| * For Ranger Hive plugin: /usr/hdp/<hdp_vers>/ranger-hive-plugin |
| * For Ranger Knox plugin: /usr/hdp/<hdp_vers>/ranger-knox-plugin |
| * For Ranger Storm plugin: /usr/hdp/<hdp_vers>/ranger-storm-plugin |
| |
| Pre Install: |
| ------------ |
| * Please take a backup of existing ranger DB and configurations, in case required. |
| * Please take a backup of existing ambari DB and configurations, in case required. |
| * You must have an existing MySQL Server or Oracle Server database instance running to be used by Ranger. |
| * Ensure that the access for the DB Admin user (root in case of MySQL or SYS in case of Oracle) is enabled in DB server from any host. |
| * Execute the following command on the Ambari Server host. |
| * Replace database-type with mysql or oracle and /jdbc/driver/path based on the location of the MySQL or Oracle JDBC driver: |
| |
| ambari-server setup --jdbc-db={database-type} --jdbc-driver={/jdbc/driver/path} |
| |
| Steps to Add Ranger in a Ambari HDP cluster: |
| -------------------------------------------- |
| * In order to know about usage of the script, Execute the command: |
| python import_ranger_to_ambari.py |
| * Migration script locates the existing config in post-install properties files used by the service. |
| * This script will collect required configs from the independently installed Ranger service configurations |
| and after verification from the user, post it to the specified Ambari Server. |
| * Set appropriate values in the <component>_install.properties template file, only if required. |
| For Ranger Admin service, ranger_admin_install.properties |
| * For script to use proper values, mandatory properties to be filled by user are as follows : |
| 1) During Ranger_Admin installation migration db_root_username and db_root_password are mandatory, |
| which can be set in the ranger_admin_install.properties |
| |
| To import Ranger (Admin and User-Sync) service and plugins we need to run the python script using command line as shown below, |
| with valid input parameters, from the host where specific Ranger component has been installed / enabled : |
| |
| python import_ranger_to_ambari.py {install option} {ambari server url} {ambari server admin username:password} {cluster name} {FQDN of host having Ranger Admin or Ranger Usersync or plugins installed} |
| |
| for example the actual command will be as : |
| |
| python import_ranger_to_ambari.py 1 http://100.100.100.100:8080 admin:admin ambari_cluster rangerambari-feb09-rhel6-mp-sec-6.cs1cloud.internal |
| |
| First parameter (install option) is to mention the service type to be ported to Ambari that is, |
| 1 for adding Ranger service and Ranger Admin component to Ambari. |
| 2 for adding Ranger User sync component to Ambari. |
| 3 to import Ranger Hdfs Plugin configs to Ambari. |
| 4 to import Ranger Hive Plugin configs to Ambari. |
| 5 to import Ranger Hbase Plugin configs to Ambari. |
| 6 to import Ranger Knox Plugin configs to Ambari. |
| 7 to import Ranger Storm Plugin configs to Ambari. |
| |
| * After running the script with first parameter as 1, Ranger service should be visible as Ambari service and Ranger-Admin should be visible. |
| * After running with 2 Ranger-Usersync should also be visible as its component, like-wise for the respective plugins. |
| * After executing the script with options 3 to 7 - please visit Ambari UI and restart the individual component, after the UI reflects the changes. |
| |
| Debugging: |
| ---------- |
| * Make sure to back up the ranger config and DB prior to running the scripts. |
| * It is possible that the service-components may be added to Ambari but the installation may fail. In that case, look for the logs from Ambari-UI. |
| * If any of the pre-requisite is not met this might happen, in that case, try installation from Ambari-UI itself. |
| * If the services are configured and not started it may show up as Install Pending, reinstall both Admin and User-sync from Ambari UI, and then start the services. |
| * In case if the services are installed and in stopped state, restart them from Ambari-UI. |
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