ambari2.6, HDP集群删除

工作中往往因为一些魔幻操作, 导致HDP集群部署失败, 与其解决一个个奇怪的问题, 不如卸载重装

但是ambari UI页面不支持删除HDP集群, 如何操作呢?

既然ambari不支持删除, 那就手动删除 (程序干的活, 无非是把人的行为有序的排列, 并一一执行)

删除HDP集群需要考虑如下几点

• 停止HDP组件服务
• 清除ambari配置
• 卸载HDP组件rpm包 (根据hdp版本号匹配)
• 删除HDP组件目录 (日志/var/log, 运行/var/run, 配置/etc, 库/var/lib, 安装/usr/hdp)

直接使用ambari UI, 停止所有服务

停止ambari-server服务 ambari-server stop

然后重置, ambari-server reset, 清除DB中的集群信息

yum -y remove *_2_6_4_0_91* hdp-select

HDP版本号根据实际情况选择

# yum list installed |grep HDP-2.6-repo-1 |head
                                      0.8.0.2.6.4.0-91           @HDP-2.6-repo-1
bigtop-jsvc.x86_64                    1.0.15-91                  @HDP-2.6-repo-1
hadoop_2_6_4_0_91.x86_64              2.7.3.2.6.4.0-91           @HDP-2.6-repo-1
hadoop_2_6_4_0_91-client.x86_64       2.7.3.2.6.4.0-91           @HDP-2.6-repo-1
hadoop_2_6_4_0_91-hdfs.x86_64         2.7.3.2.6.4.0-91           @HDP-2.6-repo-1
hadoop_2_6_4_0_91-libhdfs.x86_64      2.7.3.2.6.4.0-91           @HDP-2.6-repo-1
hadoop_2_6_4_0_91-mapreduce.x86_64    2.7.3.2.6.4.0-91           @HDP-2.6-repo-1
hadoop_2_6_4_0_91-yarn.x86_64         2.7.3.2.6.4.0-91           @HDP-2.6-repo-1
hdp-select.noarch                     2.6.4.0-91                 @HDP-2.6-repo-1
hive2_2_6_4_0_91.noarch               2.1.0.2.6.4.0-91           @HDP-2.6-repo-1

rm -fr /etc/{hadoop,hive,hive2,hive-hcatalog,hive-webhcat,pig,spark2,tez,tez_hive2,zookeeper}
rm -fr /var/log/{hadoop,hadoop-hdfs,hadoop-mapreduce,hadoop-yarn,hive,hive2,hive-hcatalog,spark,spark2,webhcat,zookeeper}
rm -fr /var/run/{hadoop,hadoop-hdfs,hadoop-mapreduce,hadoop-yarn,hive,hive2,hive-hcatalog,spark,spark2,webhcat,zookeeper}
rm -fr /var/lib/{hadoop-hdfs,hadoop-mapreduce,hadoop-yarn,hive,hive2,zookeeper}
rm -fr /hadoop
rm -fr /usr/hdp