Enable Kerberos with prepared FreeIPA server and no admin permissions

#!/bin/bash

# Script for adding services and keytabs to Cluster hosts
# Edit NUMHOSTS and HOSTS as it will be suitable for your case.
# EDIT your IPA parameters
# Select services according to the bundle

declare -a NUMHOSTS
declare -a HOSTS

SSH_OPTS='-o GlobalKnownHostsFile=/dev/null -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no'
NUMHOSTS=(adh3-1 adh3-2 adh3-3)
HOSTS=$(for i in "${NUMHOSTS[@]}"; do echo "stikhomirov-$i.ru-central1.internal"; done)

#IPA credentials
ipa_user='noadmin_username'
ipa_pass='12345678'
ipa_server='stikhomirov-freeipa.ru-central1.internal'
domain='ru-central1.internal'
realm='RU-CENTRAL1.INTERNAL'

#ADH services
services=(airflow flink hbase-phoenix_queryserver hbase-thrift2 hbase hdfs-datanode hdfs-journalnode hdfs-namenode hdfs-zkfc hdfs hive httpfs livy mapreduce-historyserver solr spark sqoop yarn-nodemanager yarn-resourcemanager yarn-timelineserver yarn zeppelin zookeeper impala)
user-groups=(airflow:airflow flink:flink hbase:hadoop hbase:hbase hdfs:hadoop hdfs:hadoop hdfs:hadoop hdfs:hadoop hdfs:hadoop hdfs:hadoop hive:hive httpfs:httpfs livy:hadoop mapred:hadoop phoenix:phoenix solr:solr spark:spark sqoop:sqoop yarn:hadoop yarn:hadoop yarn:hadoop yarn:hadoop zeppelin:zeppelin zookeeper:zookeeper impala:impala)
users=(airflow flink hbase hdfs hive httpfs impala livy mapred phoenix solr spark sqoop yarn zeppelin zookeeper)
rwr_services=(spark hdfs hbase hive yarn HTTP)

for HOST in $HOSTS; do
    echo "Installing FreeIPA client"
    ssh $SSH_OPTS $HOST sudo ipa-client-install -U -p $ipa_user -w $ipa_pass --server=$ipa_server --domain=$domain --realm=$realm

    echo "Creating keytab directory"
	  ssh $SSH_OPTS $HOST sudo mkdir /etc/security/keytabs

  	echo "Launching kinit on $HOST"
	  ssh $SSH_OPTS $HOST sudo kinit $ipa_user <<< $ipa_pass

    for user in ${users[@]}; do
        echo "Adding $user user"
            ssh $SSH_OPTS $HOST sudo adduser $user
    done

    for service in ${!services[@]}; do
        echo "Adding $service service to IPA"
            ssh $SSH_OPTS $HOST sudo ipa service-add ${services[i]}/$HOST
        echo "Get $service keytab"
            ssh $SSH_OPTS $HOST sudo ipa-getkeytab -p ${services[i]}/$HOST -k /etc/security/keytabs/${services[i]}.service.keytab
        echo "Changing owner for $service keytab"
            ssh $SSH_OPTS $HOST sudo chowner ${user-groups[i]} /etc/security/keytabs/${services[i]}.service.keytab
    done

    for service in ${rwr_services[@]}; do
        echo "Setting 640 permissions for $service"
            ssh $SSH_OPTS $HOST sudo chmod 640 /etc/security/keytabs/$service.service.keytab
    done
done