摘要:
jdk安装 1. 查看是否已经安装了java [root@hadoop10 mongod]# yum list installed |grep java 如有有jdk版本输出证明已经安装过了。 2. yum查看可用版本,并安装 [root@hadoop10 mongod]# yum -y list 阅读全文
摘要:
ssh免密登陆 1. 首先查看是否已经安装ssh [hadoop@master ~]$ ssh localhost The authenticity of host 'localhost (::1)' can't be established. ECDSA key fingerprint is SH 阅读全文