[root@node-etl-01 ~]# yum -y install openssh-clients Failed to set locale, defaulting to C.UTF-8 Last metadata expiration check: 10:22:29 ago on Mon Nov 1 09:17:41 2021. Package openssh-clients-8.0p1-5.el8.x86_64 is already installed. Dependencies resolved. ===================================================================================================================================================== Package Architecture Version Repository Size ===================================================================================================================================================== Upgrading: openssh x86_64 8.0p1-6.el8_4.2 baseos 521 k openssh-clients x86_64 8.0p1-6.el8_4.2 baseos 667 k openssh-server x86_64 8.0p1-6.el8_4.2 baseos 484 k Transaction Summary ===================================================================================================================================================== Upgrade 3 Packages Total download size: 1.6 M Downloading Packages: (1/3): openssh-server-8.0p1-6.el8_4.2.x86_64.rpm 623 kB/s | 484 kB 00:00 (2/3): openssh-8.0p1-6.el8_4.2.x86_64.rpm 554 kB/s | 521 kB 00:00 (3/3): openssh-clients-8.0p1-6.el8_4.2.x86_64.rpm 643 kB/s | 667 kB 00:01 ----------------------------------------------------------------------------------------------------------------------------------------------------- Total 1.1 MB/s | 1.6 MB 00:01 Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Running scriptlet: openssh-8.0p1-6.el8_4.2.x86_64 1/1 Running scriptlet: openssh-8.0p1-6.el8_4.2.x86_64 1/6 Upgrading : openssh-8.0p1-6.el8_4.2.x86_64 1/6 Upgrading : openssh-clients-8.0p1-6.el8_4.2.x86_64 2/6 Running scriptlet: openssh-server-8.0p1-6.el8_4.2.x86_64 3/6 Upgrading : openssh-server-8.0p1-6.el8_4.2.x86_64 3/6 Running scriptlet: openssh-server-8.0p1-6.el8_4.2.x86_64 3/6 Running scriptlet: openssh-server-8.0p1-5.el8.x86_64 4/6 Cleanup : openssh-server-8.0p1-5.el8.x86_64 4/6 Running scriptlet: openssh-server-8.0p1-5.el8.x86_64 4/6 Cleanup : openssh-clients-8.0p1-5.el8.x86_64 5/6 Cleanup : openssh-8.0p1-5.el8.x86_64 6/6 Running scriptlet: openssh-8.0p1-5.el8.x86_64 6/6 Verifying : openssh-8.0p1-6.el8_4.2.x86_64 1/6 Verifying : openssh-8.0p1-5.el8.x86_64 2/6 Verifying : openssh-clients-8.0p1-6.el8_4.2.x86_64 3/6 Verifying : openssh-clients-8.0p1-5.el8.x86_64 4/6 Verifying : openssh-server-8.0p1-6.el8_4.2.x86_64 5/6 Verifying : openssh-server-8.0p1-5.el8.x86_64 6/6 Upgraded: openssh-8.0p1-6.el8_4.2.x86_64 openssh-clients-8.0p1-6.el8_4.2.x86_64 openssh-server-8.0p1-6.el8_4.2.x86_64 Complete!
[root@node-etl-01 ~]# cat >> /etc/hosts << EOF > 192.168.32.128 node-etl-01 > 192.168.32.129 node-etl-02 > 192.168.32.130 node-etl-03 > EOF
[root@node-etl-01 ~]# ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa Generating public/private rsa key pair. Created directory '/root/.ssh'. Your identification has been saved in /root/.ssh/id_rsa. Your public key has been saved in /root/.ssh/id_rsa.pub. The key fingerprint is: SHA256:lmqUjeCUf26KcxIosHbIaGKygMq7YNE3MCt+QXWz0lU root@node-etl-01 The key's randomart image is: +---[RSA 3072]----+ | . o ..E | | ..o + | | ++. o | |. oo+o.+ . | |=+.=.o= S | |X*+.+..= | |@=.. .o o | |=.. oo.o | | oo .+. | +----[SHA256]-----+
[root@node-etl-01 ~]# ssh-copy-id node-etl-01 /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub" The authenticity of host 'node-etl-01 (192.168.32.128)' can't be established. ECDSA key fingerprint is SHA256:SITNrVHcy8RA9PwQZvziwSmsR8X1y7TRyz3sAcXtD9w. Are you sure you want to continue connecting (yes/no/[fingerprint])? /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed The authenticity of host 'node-etl-01 (192.168.32.128)' can't be established. ECDSA key fingerprint is SHA256:SITNrVHcy8RA9PwQZvziwSmsR8X1y7TRyz3sAcXtD9w. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys root@node-etl-01's password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'node-etl-01'" and check to make sure that only the key(s) you wanted were added.
