一鍵式完全刪除CDH 6.3.1
- 2019 年 11 月 12 日
- 筆記
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本文鏈接：https://blog.csdn.net/wzy0623/article/details/102946646
CDH集群的安裝部署雖然步驟比較多，但只要嚴格按照文檔操作，一般不會有太大問題。然而，如果安裝過程中出錯，或因為其它原因需要重新安裝CDH，在不重裝作業系統的前提下，是比較困難的。難點在於需要刪除的東西太多，不刪乾淨了非常容易造成安裝失敗。網上找的所謂「CDH完全卸載」其實都不夠完全。經過一天的反覆嘗試，終於寫了一個一鍵式刪除CDH腳本，在我自己的測試環境下是可行的。刪除腳本文件remove_cloudera.sh內容如下：
#!/bin/bash # 停止CM服務 service cloudera-scm-server stop service cloudera-scm-agent stop # 卸載CM軟體包 yum -y remove cloudera-manager-daemons cloudera-manager-agent cloudera-manager-server # 卸載裝載點 umount cm_processes umount cm_processes umount cm_processes # 刪除文件 rm -rf /var/log/* rm -rf /opt/cloudera* rm -rf /etc/systemd/system/multi-user.target.wants/cloudera* rm -rf /etc/default/cloudera* rm -rf /etc/cloudera* rm -rf /var/lib/cloudera* rm -rf /var/log/cloudera* rm -rf /usr/lib/systemd/system/cloudera* rm -rf /run/cloudera* rm -rf /sys/fs/cgroup/systemd/system.slice/cloudera* rm -rf /etc/security/limits.d/cloudera* rm -rf /var/lib/yum/repos/x86_64/7/cloudera* rm -rf /var/cache/yum/x86_64/7/cloudera* rm -rf /tmp/* rm -rf /var/lib/hadoop-* rm -rf /var/lib/impala rm -rf /var/lib/solr rm -rf /var/lib/zookeeper rm -rf /var/lib/hue rm -rf /var/lib/oozie rm -rf /var/lib/pgsql rm -rf /var/lib/sqoop2 rm -rf /data/dfs/ rm -rf /data/impala/ rm -rf /data/yarn/ rm -rf /dfs/ rm -rf /impala/ rm -rf /yarn/ rm -rf /var/run/hadoop-*/ rm -rf /var/run/hdfs-*/ rm -rf /usr/bin/hadoop* rm -rf /usr/bin/zookeeper* rm -rf /usr/bin/hbase* rm -rf /usr/bin/hive* rm -rf /usr/bin/hdfs rm -rf /usr/bin/mapred rm -rf /usr/bin/yarn rm -rf /usr/bin/sqoop* rm -rf /usr/bin/oozie rm -rf /etc/hadoop* rm -rf /etc/zookeeper* rm -rf /etc/hive* rm -rf /etc/hue rm -rf /etc/impala rm -rf /etc/sqoop* rm -rf /etc/oozie rm -rf /etc/hbase* rm -rf /etc/hcatalog rm -rf /var/lib/alternatives/impala-conf rm -rf /var/lib/alternatives/impalad rm -rf /var/lib/alternatives/impala-collect-diagnostics rm -rf /var/lib/alternatives/impala-shell rm -rf /var/lib/alternatives/impala-collect-minidumps rm -rf /etc/alternatives/impala-shell rm -rf /etc/alternatives/impalad rm -rf /etc/alternatives/impala-collect-diagnostics rm -rf /etc/alternatives/impala-conf rm -rf /etc/alternatives/impala-collect-minidumps rm -rf /var/log/impala* rm -rf /var/lib/alternatives/zookeeper-client rm -rf /var/lib/alternatives/zookeeper-server rm -rf /var/lib/alternatives/zookeeper-conf rm -rf /var/lib/alternatives/zookeeper-server-initialize rm -rf /var/lib/alternatives/zookeeper-server-cleanup rm -rf /var/lib/alternatives/zookeeper-security-migration rm -rf /etc/alternatives/zookeeper-conf rm -rf /etc/alternatives/zookeeper-server rm -rf /etc/alternatives/zookeeper-server-cleanup rm -rf /etc/alternatives/zookeeper-server-initialize rm -rf /etc/alternatives/zookeeper-security-migration rm -rf /etc/alternatives/zookeeper-client rm -rf /var/log/zookeeper # 重建資料庫 mysql -uroot -p123456 -e "drop database if exists scm;drop database if exists hive;drop database if exists oozie;drop database if exists hue;create database scm DEFAULT CHARACTER SET utf8;create database hive DEFAULT CHARACTER SET utf8;create database oozie DEFAULT CHARACTER SET utf8;create database hue DEFAULT CHARACTER SET utf8;" # 刪除用戶和組 userdel -r cloudera-scm userdel -r ambari-qa userdel -r appmon userdel -r falcon userdel -r gpadmin userdel -r hcat userdel -r hive userdel -r kafka userdel -r mapred userdel -r spark userdel -r tez userdel -r yarn userdel -r zookeeper userdel -r ams userdel -r atlas userdel -r flume userdel -r hbase userdel -r hdfs userdel -r infra-solr userdel -r livy userdel -r mongodb userdel -r oozie userdel -r sqoop userdel -r zeppelin userdel -r impala userdel -r kudu userdel -r hadoop groupdel hadoop groupdel cloudera-scm groupdel ambari-qa groupdel appmon groupdel falcon groupdel gpadmin groupdel hcat groupdel hive groupdel kafka groupdel mapred groupdel spark groupdel tez groupdel yarn groupdel zookeeper groupdel ams groupdel atlas groupdel flume groupdel hbase groupdel hdfs groupdel infra-solr groupdel livy groupdel mongodb groupdel oozie groupdel sqoop groupdel zeppelin groupdel impala groupdel kudu # 刪除其它節點上的CDH ssh [email protected] /root/remove_cloudera.sh ssh [email protected] /root/remove_cloudera.sh ssh [email protected] /root/remove_cloudera.sh
說明：
- 在Cloudera Manager節點執行此腳本。
- 其它節點上的remove_cloudera.sh文件只是少了重建資料庫一步，其它內容與此腳本一致。
- 腳本執行過程中的錯誤是由於被刪除的對象尚不存在，可以忽略。
- 如果已經安裝好了CDH，先在CM中停止所有服務後再執行此腳本。
- 刪除腳本一般都具有冪等性，可以多次執行。
