Hadoop集群搭建无密码登录
两台服务器,hadoop-001和hadoop-003
1.讲hadoop-001的公钥远程拷贝到hadoop-003
scp id_rsa.pub hadoop-003:/home/hadoop
2. 切换到hadoop-003,追加hadoop-001的公钥到authorized_keys中
cat ../id_rsa.pub >> ./authorized_keys
3. 从hadoop-001登录到hadoop-003(无需密码)
ssh hadoop-003
是不是感觉很麻烦,实际上有一个最快捷的方法
ssh-copy-id hadoop-0001