大数据学习十:hadoop更换权限及JPS--process information unavailable
1、修改hadoop权限#cd/opt/software/hadoop-2.8.1/sbin#./stop-dfs.sh#./stop-yarn.sh#cd../..#chown-Rhadoop:hadoophadoop-2.8.1#su-hadoop$ssh-keygen#配置免密登陆,因为换了用户$cd.ssh$catid_rsa.pub>>authorized_keys$chmod600au