SSH connectivity configuration provides connection among nodes without using password. If you configure ssh, nodes can connect with ssh without password.<\/p>\n
SSH configuration parameters are in path which is \/home\/username\/.ssh\/ . You have to make SSH configuration in connection user’s home directory. For example if you use oracle user for ssh connection, you have to use \/home\/oracle\/.ssh\/ path.<\/p>\n
Create SSH Key on First Node<\/strong><\/p>\n [oracle@test01 ~]$ssh-keygen -t rsa Create SSH Key on Second Node<\/strong><\/p>\n [oracle@test02 ~]$ssh-keygen -t rsa Copy SSH Key From First Node To Second Node<\/strong><\/p>\n [oracle@test01 ~]$ scp \/home\/oracle\/.ssh\/id_rsa.pub oracle@test02:\/home\/oracle\/.ssh\/authorized_keys<\/p><\/blockquote>\n Copy SSH Key From Second Node To First Node<\/strong><\/p>\n [oracle@test02 ~]$ scp \/home\/oracle\/.ssh\/id_rsa.pub oracle@test01:\/home\/oracle\/.ssh\/authorized_keys<\/p><\/blockquote>\n Connection Test<\/strong><\/p>\n [oracle@test01 ~]$ ssh oracle@test02 If you want to add another server, you can use cat or ssh-copy-id command.<\/p>\n Cat Command<\/strong><\/p>\n Recommenned ssh-copy-id command adds automaticaly to authorized_keys.<\/p>\n or<\/p>\n [oracle@test03 ~]$ scp \/home\/oracle\/.ssh\/id_rsa.pub oracle@test01:\/home\/oracle\/.ssh\/id_rsa_test03.pub SSH connectivity configuration provides connection among nodes without using password. If you configure ssh, nodes can connect with ssh without password. SSH configuration parameters are in path which is \/home\/username\/.ssh\/ . You have to make SSH configuration in connection user’s home directory. For example if you use oracle user for ssh connection, you have to…<\/p>\n","protected":false},"author":37,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[9,18],"tags":[14,31,22],"class_list":["post-486","post","type-post","status-publish","format-standard","hentry","category-administration","category-linux-unix","tag-database-administration","tag-linux-administration","tag-system-administration"],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p39NFI-7Q","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/posts\/486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/users\/37"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/comments?post=486"}],"version-history":[{"count":9,"href":"https:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/posts\/486\/revisions"}],"predecessor-version":[{"id":1497,"href":"https:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/posts\/486\/revisions\/1497"}],"wp:attachment":[{"href":"https:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/media?parent=486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/categories?post=486"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/tags?post=486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nGenerating public\/private rsa key pair.
\nEnter file in which to save the key (\/home\/oracle\/.ssh\/id_rsa):
\nCreated directory ‘\/home\/oracle\/.ssh’.
\nEnter passphrase (empty for no passphrase):
\nEnter same passphrase again:
\nYour identification has been saved in \/home\/oracle\/.ssh\/id_rsa.
\nYour public key has been saved in \/home\/oracle\/.ssh\/id_rsa.pub.
\nThe key fingerprint is:
\ne3:ea:68:e1:53:b5:9a:14:a9:b3:e6:58 oracle@test01
\nThe key’s randomart image is:
\n+–[ RSA 2048]—-+
\n| |
\n| o |
\n| = . |
\n| . o o + |
\n| +S+ |
\n| . o.o.o |
\n| . + o. Eo |
\n| +.o. |
\n| ..o .o. |
\n+—————–+
\n[oracle@test01 ~]$
\n[oracle@test01 ~]$ cd \/home\/oracle\/.ssh\/
\n[oracle@test01 .ssh]$ ll
\ntotal 8
\n-rw——-. 1 oracle oinstall 1675 Oct 2 17:22 id_rsa
\n-rw-r–r–. 1 oracle oinstall 404 Oct 2 17:22 id_rsa.pub<\/p><\/blockquote>\n
\nGenerating public\/private rsa key pair.
\nEnter file in which to save the key (\/home\/oracle\/.ssh\/id_rsa):
\nCreated directory ‘\/home\/oracle\/.ssh’.
\nEnter passphrase (empty for no passphrase):
\nEnter same passphrase again:
\nYour identification has been saved in \/home\/oracle\/.ssh\/id_rsa.
\nYour public key has been saved in \/home\/oracle\/.ssh\/id_rsa.pub.
\nThe key fingerprint is:
\ne3:ea:68:e1:53:b5:9a:14:a9:b3:e6:58 oracle@test02
\nThe key’s randomart image is:
\n+–[ RSA 2048]—-+
\n| o |
\n| o |
\n| = . |
\n| . o o + |
\n| +S+ |
\n| . .o.o |
\n| . + o. o |
\n| +.o. |
\n| ..o .o. |
\n+—————–+
\n[oracle@test02 ~]$
\n[oracle@test02 ~]$ cd \/home\/oracle\/.ssh\/
\n[oracle@test02 .ssh]$ ll
\ntotal 8
\n-rw——-. 1 oracle oinstall 1675 Oct 2 17:22 id_rsa
\n-rw-r–r–. 1 oracle oinstall 404 Oct 2 17:22 id_rsa.pub<\/p><\/blockquote>\n
\n[oracle@test02 ~]$<\/p>\n
\n[oracle@test01 ~]$ ssh-copy-id oracle@test03<\/p>\n
\n[oracle@test01 ~]$ cat id_rsa_test03.pub >> authorized_keys<\/p><\/blockquote>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"