{"id":1192,"date":"2009-06-22T07:03:15","date_gmt":"2009-06-22T11:03:15","guid":{"rendered":"http:\/\/onlineappsdba.com\/index.php\/2009\/06\/22\/automate-ssh-authorization\/"},"modified":"2014-03-13T17:55:22","modified_gmt":"2014-03-13T21:55:22","slug":"automate-ssh-authorization","status":"publish","type":"post","link":"https:\/\/onlineappsdba.com\/index.php\/2009\/06\/22\/automate-ssh-authorization\/","title":{"rendered":"Automate SSH Authorization"},"content":{"rendered":"<p>I usually work on Linux machines. every time its a time taking task to generate ssh key generation between servers and copy the authorization key.<\/p>\n<p>i have a small script which will generate and copy the files to your desired destinations and makes your task easy<\/p>\n<p>Login to server A<\/p>\n<pre>#ssh-keygen -t rsa -b 2048<\/pre>\n<p>follow the instructions and complete the key generation with empty passphrase.<\/p>\n<pre>#cd \/tmp\r\n\r\n#vi sshkeycopy.sh\r\n\r\n#-------- end of the script -----------\r\n\r\n#! \/bin\/bash\r\n\r\n PATH=\"\/bin:\/usr\/bin\" if [ ! -e ~\/.ssh\/id_rsa.pub ]; then\r\n\r\n echo \"RSA public key file ~\/.ssh\/id_rsa.pub not found!\"\r\n\r\n exit 1\r\n\r\n fi\r\n\r\nfor desthost in $@; do\r\n\r\n ssh -q \"${USER}@${desthost}\" \\\r\n\r\n \"if [ ! -d ~\/.ssh ]; then mkdir -m 0700 ~\/.ssh; fi; \\\r\n\r\n echo $(cat ~\/.ssh\/id_rsa.pub) &gt;&gt; ~\/.ssh\/authorized_keys; \\\r\n\r\n chmod 0600 ~\/.ssh\/authorized_keys\" || echo \"Unable to connect to $desthost\"\r\n\r\n done\r\n#-------- start of the script -----------<\/pre>\n<p>Save the test using :wq and quit.<\/p>\n<pre># chmod 700 sshkeycopy.sh<\/pre>\n<p>Now you are ready to copy the generated keys to the destination servers<\/p>\n<pre># cd \/tmp\r\n\r\n#.\/sshkeycopy.sh serverB.linuxgurus.com serverC.linuxgurus.com<\/pre>\n<p>For the first time, it will ask password for the destination servers to copy the <tt>authorized_keys.<\/tt><\/p>\n<p>Now you can scp or ssh into destination servers from the current server without any passwords.<\/p>\n<p><tt>- Shankar<\/tt><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I usually work on Linux machines. every time its a time taking task to generate ssh key generation between servers [&hellip;]<\/p>\n","protected":false},"author":115,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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