linux-解决/usr/bin/which: no ssh-copy-id in 和ssh: Could not resolve hostname问题

最新推荐文章于 2025-06-27 09:08:57 发布

wuzhenwei0419

最新推荐文章于 2025-06-27 09:08:57 发布

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分类专栏： Kafka

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本文详细介绍了如何通过SSH命令实现远程主机之间的免密登录，包括使用yum安装openssh-clients，解决因主机名未被解析导致的连接错误，以及在/etc/hosts文件中正确配置主机映射。

使用yum install openssh-clients 安装命令

有的系统没有此命令有的系统缺省就包含这一条命令！

但是我的测试机没有发现此命令只能这样安装！

这时有报错了

[root@node2 ~]# ssh-copy-id -i /root/.ssh/id_rsa.pub node1
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed

/usr/bin/ssh-copy-id: ERROR: ssh: Could not resolve hostname node1: Name or service not known

这是因为没有解析主机名

[root@node2 ~]# vi /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.1.96 node1
192.168.1.108 node2
192.168.1.109 node3

ping node1

[root@node3 ~]# ping node1
PING node1 (192.168.1.96) 56(84) bytes of data.
64 bytes from node1 (192.168.1.96): icmp_seq=1 ttl=64 time=1.36 ms
64 bytes from node1 (192.168.1.96): icmp_seq=2 ttl=64 time=0.336 ms
64 bytes from node1 (192.168.1.96): icmp_seq=3 ttl=64 time=0.441 ms
64 bytes from node1 (192.168.1.96): icmp_seq=4 ttl=64 time=0.579 ms
64 bytes from node1 (192.168.1.96): icmp_seq=5 ttl=64 time=0.505 ms