Problem Description: error 503 is reported on the page after Zeppelin is started
Solution:
You need to modify the directory permissions and attribution of webapp
drwxrwxr-x 3 hadoop hadoop 4096 Sep 9 11:23 webapps
chmod 755 webapps
chown -R hadoop:hadoop webapps/
After modification, restart Zeppelin
[hadoop@10 /usr/local/service/zeppelin-0.9.0/bin]$ ./zeppelin-daemon.sh restart
Please specify HADOOP_CONF_DIR if USE_HADOOP is true
Zeppelin stop [ OK ]
Zeppelin start [ OK ]
[hadoop@10 /usr/local/service/zeppelin-0.9.0/bin]$
web UI
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