『 Tips 』SSH 免密码登录 taotaoli 2016-08-18 2,409 阅读1分钟 写在前面 每次登录远程服务器都要输密码!!! 查看图片 1. 事前准备 本地机器:local 远程机器:remote 2. 实操步骤 本地机器生成公钥,私钥: ssh-keygen -t rsa taotao@mac007:~$ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/Users/chenshan/.ssh/id_rsa): /Users/chenshan/.ssh/id_rsa_test Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /Users/chenshan/.ssh/id_rsa_test. Your public key has been saved in /Users/chenshan/.ssh/id_rsa_test.pub. The key fingerprint is: SHA256:gYV/PFrA08nktGUZ8LlFJ/Fhg7wDRjYQslmwf4UYJZc taotao@mac007 The key's randomart image is: +---[RSA 2048]----+ | =oXOO*o==.| | .oXoXE+=.+o| | .=.=+.+.o .| | o.= .= | | S= o. . | | . . | | | | | | | +----[SHA256]-----+ taotao@mac007:~$ls ~/.ssh/ | grep test id_rsa_test id_rsa_test.pub 上传本地公钥到远程机器: scp ~/.ssh/id_rsa_test.pub username@remote:.ssh/id_rsa_test.pub taotao@mac007:~$ scp ~/.ssh/id_rsa_test.pub username@remote:.ssh/id_rsa_test.pub username@remote's password: id_rsa_test.pub 100% 412 0.4KB/s 00:00 在远程机器上设置 authorized_keys : cat /root/.ssh/id_rsa_test.pub >> /root/.ssh/authorized_keys 3. 完成