{"id":22533,"date":"2025-05-26T11:03:46","date_gmt":"2025-05-26T03:03:46","guid":{"rendered":"https:\/\/cciedump.spoto.net\/blog\/?p=22533"},"modified":"2025-05-26T11:03:48","modified_gmt":"2025-05-26T03:03:48","slug":"how-to-do-password-recovery-on-f5-big-ip","status":"publish","type":"post","link":"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html","title":{"rendered":"How to Do Password Recovery on F5 BIG-IP?"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_17 counter-hierarchy counter-decimal ez-toc-light-blue\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><i class=\"ez-toc-glyphicon ez-toc-icon-toggle\"><\/i><\/a><\/span><\/div>\n<nav><ul class=\"ez-toc-list ez-toc-list-level-1\"><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#Password_Recovery_on_BIG-IP_11x-140\" title=\"Password Recovery on BIG-IP 11.x\u201314.0\">Password Recovery on BIG-IP 11.x\u201314.0<\/a><ul class=\"ez-toc-list-level-3\"><li class=\"ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#Reboot_into_Single-User_Mode\" title=\"Reboot into Single-User Mode\">Reboot into Single-User Mode<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#Reset_the_Root_Password\" title=\"Reset the Root Password\">Reset the Root Password<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#Password_Recovery_on_BIG-IP_140_and_Later\" title=\"Password Recovery on BIG-IP 14.0 and Later\">Password Recovery on BIG-IP 14.0 and Later<\/a><ul class=\"ez-toc-list-level-3\"><li class=\"ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#Enter_RDBREAK_Mode\" title=\"Enter RD.BREAK Mode\">Enter RD.BREAK Mode<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#Identify_Your_Logical_Volumes\" title=\"Identify Your Logical Volumes\">Identify Your Logical Volumes<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#Remount_Filesystems_Read-Write\" title=\"Remount Filesystems Read-Write\">Remount Filesystems Read-Write<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#Mount_Config_Var_Volumes\" title=\"Mount Config &amp; Var Volumes\">Mount Config &amp; Var Volumes<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#Chroot_Reset\" title=\"Chroot &amp; Reset\">Chroot &amp; Reset<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#Ensure_SELinux_Relabeling\" title=\"Ensure SELinux Relabeling\">Ensure SELinux Relabeling<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#Exit_Reboot\" title=\"Exit &amp; Reboot\">Exit &amp; Reboot<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#Special_Cases_Considerations\" title=\"Special Cases &amp; Considerations\">Special Cases &amp; Considerations<\/a><ul class=\"ez-toc-list-level-3\"><li class=\"ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#RAID_vs_Non-RAID_on_1410\" title=\"RAID vs. Non-RAID on 14.1.0+\">RAID vs. Non-RAID on 14.1.0+<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#vCMP_Guests\" title=\"vCMP Guests\">vCMP Guests<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#Skipping_FSCK\" title=\"Skipping FSCK\">Skipping FSCK<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\/#AdminUser_Password_Recovery_on_rSeries\" title=\"Admin\/User Password Recovery on rSeries\">Admin\/User Password Recovery on rSeries<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Password_Recovery_on_BIG-IP_11x-140\"><\/span>Password Recovery on BIG-IP 11.x\u201314.0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>Applies to: BIG-IP 11.x, 12.x, 13.x, 14.0<br>Bootloader: GRUB 0.97 or GRUB2<\/p><\/blockquote>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Reboot_into_Single-User_Mode\"><\/span>Reboot into Single-User Mode<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol><li><strong>Reboot<\/strong> the system via console.<\/li><li>At the GRUB menu:<ul><li><strong>GRUB2<\/strong> platforms: highlight your kernel entry, press <strong>e<\/strong>, append <code>single<\/code> (or <code>single fastboot<\/code> to skip fsck), then <strong>Ctrl-x<\/strong> to boot.<\/li><li><strong>GRUB0.97<\/strong> platforms: press <strong>e<\/strong> twice to edit the <code>kernel<\/code> line, append <code>single<\/code>, then press <strong>b<\/strong> to boot.<\/li><\/ul><\/li><\/ol>\n\n\n\n<blockquote class=\"wp-block-quote\"><p><strong>Note:<\/strong> If you\u2019re uncertain which GRUB version your appliance uses, refer to F5\u2019s K14658 KB article.<\/p><\/blockquote>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Reset_the_Root_Password\"><\/span>Reset the Root Password<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Once you reach a prompt like <code>switch_root:\/#<\/code>:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">shell\n<code>mount -a\npasswd root<\/code><\/code><\/pre>\n\n\n\n<ul><li><strong><code>mount -a<\/code><\/strong> ensures all filesystems from <code>\/etc\/fstab<\/code> are mounted (including <code>\/<\/code> as read-write).<\/li><li><strong><code>passwd root<\/code><\/strong> invokes the password-set utility\u2014enter and confirm your new strong password.<\/li><li>Type <strong><code>exit<\/code><\/strong> or <strong><code>reboot<\/code><\/strong> to continue normal boot.<\/li><\/ul>\n\n\n\n<p>After reboot, you can log in with your new <code>root<\/code> password.<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Password_Recovery_on_BIG-IP_140_and_Later\"><\/span>Password Recovery on BIG-IP 14.0 and Later<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>F5 revised its architecture in 14.x, leveraging <strong>RD.BREAK<\/strong> to interrupt the boot process more cleanly.<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Enter_RDBREAK_Mode\"><\/span>Enter RD.BREAK Mode<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol><li><strong>Reboot<\/strong> and, at the GRUB menu, highlight the kernel entry.<\/li><li>Press <strong>e<\/strong> to edit; on the kernel line, append <code>rd.break<\/code>.<\/li><li>Press <strong>Ctrl-x<\/strong> (or <strong>b<\/strong>) to boot into the minimal shell.<\/li><\/ol>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Identify_Your_Logical_Volumes\"><\/span>Identify Your Logical Volumes<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">shell\n<code>mount | grep \/dev\/mapper\/vg\u2013db\n<\/code><\/code><\/pre>\n\n\n\n<p>Typical output:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">bash\n<code>\/dev\/mapper\/vg\u2013db\u2013sda-set.2.root   on \/sysroot\n\/dev\/mapper\/vg\u2013db\u2013sda-set.2._usr   on \/sysroot\/usr<\/code><\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>If you see <strong><code>vda<\/code><\/strong> instead of <strong><code>sda<\/code><\/strong>, substitute accordingly.<\/p><\/blockquote>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Remount_Filesystems_Read-Write\"><\/span>Remount Filesystems Read-Write<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">shell\n<code>mount -o remount,rw \/sysroot\nmount -o remount,rw \/sysroot\/usr<\/code><\/code><\/pre>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Mount_Config_Var_Volumes\"><\/span>Mount Config &amp; Var Volumes<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Based on your \u201cset\u201d number (e.g., <strong>set.2<\/strong>):<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">shell\n<code>mount \/dev\/mapper\/vg\u2013db\u2013sda-set.2._config  \/sysroot\/config\nmount \/dev\/mapper\/vg\u2013db\u2013sda-set.2._var     \/sysroot\/var<\/code><\/code><\/pre>\n\n\n\n<p>Verify all are <strong>rw<\/strong>:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">shell\n<code>mount | grep \/dev\/mapper\/vg\u2013db<\/code><\/code><\/pre>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Chroot_Reset\"><\/span>Chroot &amp; Reset<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">shell\n<code>chroot \/sysroot\npasswd root<\/code><\/code><\/pre>\n\n\n\n<p>Set your new <code>root<\/code> password when prompted.<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Ensure_SELinux_Relabeling\"><\/span>Ensure SELinux Relabeling<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">shell\n<code>touch \/.autorelabel<\/code><\/code><\/pre>\n\n\n\n<p>This flags the filesystem for relabel on next boot.<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Exit_Reboot\"><\/span>Exit &amp; Reboot<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">shell\n<code>exit   # from chroot\nexit   # from switch_root shell<\/code><\/code><\/pre>\n\n\n\n<p>System boots normally, and you can log in as <code>root<\/code> with your new password.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p><strong>VIPRION Multi-Blade Note:<\/strong> On chassis with multiple blades, repeat the password change on the <strong>primary<\/strong> blade. After reboot, log into secondary and SSH via <code>ssh primary<\/code> (key-auth) to propagate the change.<\/p><\/blockquote>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Special_Cases_Considerations\"><\/span>Special Cases &amp; Considerations<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"RAID_vs_Non-RAID_on_1410\"><\/span>RAID vs. Non-RAID on 14.1.0+<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul><li><strong>Non-RAID platforms (14.1+)<\/strong>: refer to KB K35811337.<\/li><li><strong>RAID-capable platforms (14.1+)<\/strong>: refer to KB K23220345.<\/li><\/ul>\n\n\n\n<p>These outline slight variations in volume mappings when using hardware RAID controllers.<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"vCMP_Guests\"><\/span>vCMP Guests<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>For BIG-IP instances running as vCMP guests, follow KB K14581 for single-user mode nuances.<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Skipping_FSCK\"><\/span>Skipping FSCK<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>If forced filesystem checks prompt for passwords, append <code>single fastboot<\/code> instead of <code>single<\/code> for GRUB2 boots to skip checks.<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"AdminUser_Password_Recovery_on_rSeries\"><\/span>Admin\/User Password Recovery on rSeries<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>On F5 <strong>rSeries<\/strong> appliances (F5OS), \u201croot\u201d and \u201cadmin\u201d reside in separate partitions and use a systemd-based boot:<\/p>\n\n\n\n<ul><li><strong>Reboot<\/strong> to the F5OS bootloader; at the boot menu, press <strong>e<\/strong> on the default image.<\/li><li>On the <code>linuxefi<\/code> line, append <code>rd.break<\/code>.<\/li><li>Press <strong>Ctrl-x<\/strong> to continue into the maintenance shell.<\/li><li><strong>Remount<\/strong> overlays as read-write: bash<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">mount -o remount,rw \/sysroot &amp;&amp; mount -o remount,rw \/sysroot\/sysroot\r\nchroot \/sysroot\r<\/code><\/pre>\n\n\n\n<ul><li><strong>Change<\/strong> the <code>admin<\/code> (or <code>root<\/code>) password: <\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">passwd admin   # or passwd root\r<\/code><\/pre>\n\n\n\n<ul><li><strong>Reload<\/strong> SELinux policy &amp; restore contexts: <\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">load_policy -i\r\nrestorecon -v \/etc\/shadow<\/code><\/pre>\n\n\n\n<ul><li><strong>Update<\/strong> shadow tracker if needed (rSeries-specific): <\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">awk -F: '\/^admin:\/{print \"admin admin\", $2, $3}' \/etc\/shadow >> \/etc\/libnss-udr\/shadow.tracker\r<\/code><\/pre>\n\n\n\n<ul><li><strong>Exit<\/strong> twice to continue boot; log in with your new credentials.<\/li><\/ul>\n\n\n\n<p><\/p>\n<div class='sfsi_Sicons' style='width: 100%; display: inline-block; vertical-align: middle; text-align:left'><div style='margin:0px 8px 0px 0px; line-height: 24px'><span>Please follow and like us:<\/span><\/div><div class='sfsi_socialwpr'><div class='sf_fb_share sf_icon' style='text-align:left;vertical-align: middle;'><a href='https:\/\/www.facebook.com\/sharer\/sharer.php?u=https%3A%2F%2Fcciedump.spoto.net%2Fblog%2Fhow-to-do-password-recovery-on-f5-big-ip_22533.html' style='display:inline-block;'  > <img class='sfsi_wicon'  data-pin-nopin='true' width='auto' height='auto' alt='fb-share-icon' title='Facebook Share' src='https:\/\/cciedump.spoto.net\/blog\/wp-content\/plugins\/ultimate-social-media-icons\/images\/visit_icons\/fbshare_bck.png'  \/><\/a><\/div><div class='sf_twiter sf_icon' style='display: inline-block;vertical-align: middle;width: auto;margin-left: 7px;'>\r\n\t\t\t\t\t\t<a target='_blank' href='https:\/\/twitter.com\/intent\/tweet?text=How+to+Do+Password+Recovery+on+F5+BIG-IP%3F+https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html'style='display:inline-block' >\r\n\t\t\t\t\t\t\t<img data-pin-nopin= true width='auto' class='sfsi_wicon' src='https:\/\/cciedump.spoto.net\/blog\/wp-content\/plugins\/ultimate-social-media-icons\/images\/visit_icons\/en_US_Tweet.svg' alt='Tweet' title='Tweet' >\r\n\t\t\t\t\t\t<\/a>\r\n\t\t\t\t\t<\/div><div class='sf_pinit sf_icon' style='text-align:left;vertical-align: middle;float:left;line-height: 33px;width:auto;margin: 0 -2px;'><a href='#'  onclick='sfsi_pinterest_modal_images(event,\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\",\"How to Do Password Recovery on F5 BIG-IP?\")' style='display:inline-block;'  > <img class='sfsi_wicon'  data-pin-nopin='true' width='auto' height='auto' alt='fb-share-icon' title='Pin Share' src='https:\/\/cciedump.spoto.net\/blog\/wp-content\/plugins\/ultimate-social-media-icons\/images\/share_icons\/Pinterest_Save\/en_US_save.svg'  \/><\/a><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Table of Contents Password Recovery on BIG-IP 11.x\u201314.0Reboot into Single-User ModeReset the Root PasswordPassword Recovery on BIG-IP 14.0 and LaterEnter RD.BREAK ModeIdentify Your Logical VolumesRemount Filesystems Read-WriteMount Config &amp; Var VolumesChroot &amp; ResetEnsure SELinux RelabelingExit &amp; RebootSpecial Cases &amp; ConsiderationsRAID vs. Non-RAID on 14.1.0+vCMP GuestsSkipping FSCKAdmin\/User Password Recovery on rSeries Password Recovery on BIG-IP 11.x\u201314.0&#8230; &raquo; <a class=\"read-more-link\" href=\"https:\/\/cciedump.spoto.net\/blog\/how-to-do-password-recovery-on-f5-big-ip_22533.html\">read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Do Password Recovery on F5 BIG-IP? - SPOTO Official Blog<\/title>\n<meta name=\"description\" content=\"F5 devices run on a customized Linux, the standard approach is to boot into single-user or maintenance mode, remount the root filesystem read-write, and then invoke the passwd utility to set a new password. 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