CDH安装失败，如何重新安装

CDH安装失败，如何重新安装

问题描述：在华为云上安装CDH6.2，中途安装失败

华为云端口控制很细，分内外网，需要把各机器间的端口完全放开，然后：

1、对应节点上停止服务

systemctl stop cloudera-scm-server
systemctl stop cloudera-scm-agent

1、删除Agent节点上的cm_guid

rm -f /var/lib/cloudera-scm-agent/cm_guid

2、drop scm库

drop database scm;

3、删除Agent节点上的 namenode 和 datanode 节点信息

rm -rf /opt/dfs/nn/*
rm -rf /opt/dfs/dn/*

4、在主节点上重新初始化CM数据库

/opt/cloudera/cm/schema/scm_prepare_database.sh mysql scm scm scm

5、对应节点启动服务，并查看运行状态

systemctl start cloudera-scm-server
systemctl start cloudera-scm-agent

systemctl status cloudera-scm-server
systemctl status cloudera-scm-agent

6、监控运行日志，重新安装集群

tail -f /var/log/cloudera-scm-server/cloudera-scm-server.log
tail -f /var/log/cloudera-scm-agent/cloudera-scm-agent.log