How to completely clean up an Amabri Server Installation
Sometimes in order to build new stuff you have to destroy/remove/clean old stuff, but when you are on a Ambari server installation that fails for what ever reason when trying to configure your Hadoop Cluster starting for zero is not that easy because Ambari is not that good in tracking and erasing the failed installations.
Not sure why this but 100% of the times i try to use the agent-cleanup.py does not work. I am not trying to reinvent the wheel but the script simply does not work.
python /usr/lib/python2.6/site-packages/ambari_agent/HostCleanup.py
So i had to come up with my own hack to clean up and prepare for a new install.
Here is the code i use for this task: You must be logged a root user to be able to run all this.ambari-server stop ambari-agent stop
yum -y remove yum list installed | grep -i hadoop | cut -d. -f1 | sed -e :a -e '$!N; s/\n/ /; ta'
yum -y remove ambari*
yum -y remove yum list installed | grep -w 'HDP' | cut -d. -f1 | grep -v "^[ ]" | sed -e :a -e '$!N; s/\n/ /; ta'
yum -y remove yum list installed | egrep -w 'hcatalog|hive|hbase|zookeeper|oozie|pig|sqoop|snappy|hadoop-lzo|knox|hadoop|hue' | cut -d. -f1 | grep -v "^[ ]" | sed -e :a -e '$!N; s/\n/ /; ta'
yum -y remove yum list installed | egrep -w 'mysql|postgresql' | cut -d. -f1 | grep -v "^[ ]" | sed -e :a -e '$!N; s/\n/ /; ta'
rm -rf find /etc -maxdepth 1 | egrep -wi 'mysql|hcatalog|hive|hbase|zookeeper|oozie|pig|sqoop|snappy|hadoop|knox|hadoop|hue|ambari|tez|flume|storm|accumulo|spark|kafka|falcon|slider|ganglia|nagios|phoenix' | sed -e :a -e '$!N; s/\n/ /; ta'
rm -rf find /var/log -maxdepth 1 | egrep -wi 'mysql|hcatalog|hive|hbase|zookeeper|oozie|pig|sqoop|snappy|hadoop|knox|hadoop|hue|ambari|tez|flume|storm|accumulo|spark|kafka|falcon|slider|ganglia|nagios|phoenix' | sed -e :a -e '$!N; s/\n/ /; ta'
rm -rf find /tmp -maxdepth 1 | egrep -wi 'hadoop' | sed -e :a -e '$!N; s/\n/ /; ta'
rm -rf find /var/lib -maxdepth 1 | egrep -wi 'pgsql|mysql|hcatalog|hive|hbase|zookeeper|oozie|pig|sqoop|snappy|hadoop|knox|hadoop|hue|ambari|tez|flume|storm|accumulo|spark|kafka|falcon|slider|ganglia|nagios|phoenix' | sed -e :a -e '$!N; s/\n/ /; ta'