{"id":26105,"date":"2023-02-20T07:54:12","date_gmt":"2023-02-20T07:54:12","guid":{"rendered":"http:\/\/localhost\/helpold\/?p=26105"},"modified":"2024-12-22T00:02:43","modified_gmt":"2024-12-21T20:32:43","slug":"recovering-the-root-password-in-the-recovery-mode","status":"publish","type":"post","link":"https:\/\/www.arvancloud.ir\/help\/en\/recovering-the-root-password-in-the-recovery-mode\/","title":{"rendered":"Recovering the root password in the Recovery mode"},"content":{"rendered":"

If a Linux-based instance is active in the Cloud Computing section and for any reason you have forgotten your user password to sign in to the instance environment, you will be able to recover the root password. To do this, you need to use the\u00a0Console<\/strong>\u00a0option in \u201cCloud Compute\u201d<\/strong>\u00a0-> \u201cInstances<\/strong>\u201d<\/strong>\u00a0-> \u201cAction\u201d<\/strong>\u00a0menu.<\/p>\n

In this topic, the methods of recovering the root password in operation systems of\u00a0Ubuntu, CentOS, and Debain are described.<\/span><\/p>\n

<\/h3>\n

Ubuntu operating system<\/strong><\/span><\/h3>\n
    \n
  1. \n

    After selecting the\u00a0<\/span>console<\/strong><\/span>\u00a0option, as soon as the window opens and before the operating system loads, press\u00a0<\/span>Shift<\/strong><\/span>\u00a0to move to the\u00a0<\/span>GNU GRUB<\/strong><\/span> menu.
    \n<\/span><\/p>\n<\/li>\n

  2. Use the arrow keys on the keyboard to go to\u00a0Advance options for Ubuntu<\/strong>\u00a0and press\u00a0Enter<\/strong>\u00a0to move to the next step. In this step, select the second option that ends with\u00a0recovery mode.<\/strong><\/span><\/span><\/li>\n
  3. \n

    After few seconds, you will face with a page similar to the image below. Select the\u00a0root<\/strong> option to move to the next step.<\/p>\n<\/li>\n

  4. \n

    In this step, press\u00a0Enter<\/strong>\u00a0to enter into the\u00a0root<\/strong> environment.<\/p>\n

      \n
    1. \n

      Then, enter the following command:<\/span><\/p>\n

      mount -o remount,rw \/sysroot\u00a0<\/em><\/span><\/code><\/p>\n<\/li>\n

    2. \n

      In the next step, enter the following command and set a new password.
      \n<\/span><\/p>\n

      passwd root<\/em><\/span><\/code><\/p>\n<\/li>\n

    3. \n

      Finally, reboot the cloudlet by using the\u00a0reboot<\/strong>\u00a0command.<\/p>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n

      Debian operating system<\/strong><\/h3>\n
        \n
      1. \n

        After selecting the\u00a0console\u00a0<\/strong>option from the\u00a0Operation<\/strong>\u00a0menu, as soon as the window opens and connection is established press\u00a0e<\/strong>\u00a0to move to the\u00a0GNU Grab<\/strong>\u00a0menu. Then,\u00a0using the arrow keys on the keyboard,\u00a0<\/span>move to the line of\u00a0inux \/ boot \/ vmlinuz \u2026<\/strong><\/span>\u00a0and\u00a0<\/span>delete all phrases in this line beginning with console<\/strong><\/span>. In the next step, go to the end of this line and after pressing one\u00a0<\/span>Space<\/strong><\/span>, add the phrase of\u00a0<\/span>init=\/bin\/bash<\/strong><\/span>. Finally, press\u00a0<\/span>Ctrl + X<\/strong><\/span> to reload the system.
        \n<\/span><\/p>\n<\/li>\n

      2. \n

        After the system was booted, you should be transferred to the following environment.
        \n<\/span><\/p>\n<\/li>\n

      3. \n

        In this environment, the file system is in read-only mode. To be able to create any change in this file, it must be first change to read-write mode. To do this, enter the following command:<\/p>\n

        mount -o remount \/<\/code>
        \n<\/em><\/p>\n<\/li>\n

      4. \n

        Now you can change the root password by using the\u00a0passwd<\/strong><\/span> command.
        \n<\/span><\/p>\n<\/li>\n

      5. \n

        Finally, reboot the system by pressing\u00a0Alt + Ctrl + Delete\u00a0<\/strong>at the top of the window<\/span>.<\/p>\n<\/li>\n<\/ol>\n

        CentOS operating system<\/strong><\/h3>\n
          \n
        1. \n

          After selecting the\u00a0Console<\/strong>\u00a0option from the\u00a0Operation<\/strong>\u00a0menu, when you saw the following options during the boot process, press\u00a0e<\/strong>\u00a0to move to\u00a0GNU Grab<\/strong> menu.<\/p>\n<\/li>\n

        2. Then, using the arrow keys on the keyboard, move down to arrive at\u00a0Linux 16<\/strong>\u00a0line.\u00a0Delete all phrases in this line beginning with console<\/strong>. Change the phrase of\u00a0ro<\/strong>\u00a0in this line to\u00a0rw<\/strong>, and add the phrase of\u00a0break enforcing=0<\/strong>\u00a0to this line. Finally, press\u00a0Ctrl + X<\/strong> so the system will be reloaded.<\/li>\n
        3. In the next step, using the following command, change the file system to read-write mode:\n

          mount -o remount,rw \/sysroot<\/code>
          \n<\/em><\/p>\n<\/li>\n

        4. \n

          Change the root file system using the following command:<\/p>\n

          chroot \/sysroot<\/em><\/code><\/p>\n<\/li>\n

        5. \n

          Now, using the\u00a0passwd<\/strong> command, change the root password and set a new password.<\/p>\n<\/li>\n

        6. \n

          Then, use the following command to update the content of\u00a0SELinux (a Linux security module) in accordance with these new settings.<\/span><\/p>\n

           <\/li>\n

        7. \n

          Finally, first exit from chroot using the\u00a0exit<\/strong>\u00a0command. Then, use the\u00a0exit<\/strong> command again to reboot the system.<\/p>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

          If a Linux-based instance is active in the Cloud Computing section and for any reason you have forgotten your user password to sign in to the instance environment, you will be able to recover the root password. To do this, you need to use the\u00a0Console\u00a0option in \u201cCloud Compute\u201d\u00a0-> \u201cInstances\u201d\u00a0-> \u201cAction\u201d\u00a0menu. In this topic, the methods […]<\/p>\n","protected":false},"author":79,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"r1_post_views_count":"916","feedback_yes":"0","feedback_no":"0","ads_id_sidebar":"","ads_id_content":"","footnotes":""},"categories":[245,279],"tags":[],"class_list":["post-26105","post","type-post","status-publish","format-standard","hentry","category-cloud-server","category-server-troubleshooting"],"lang":"en","translations":{"en":26105},"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/www.arvancloud.ir\/help\/wp-json\/wp\/v2\/posts\/26105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.arvancloud.ir\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.arvancloud.ir\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.arvancloud.ir\/help\/wp-json\/wp\/v2\/users\/79"}],"replies":[{"embeddable":true,"href":"https:\/\/www.arvancloud.ir\/help\/wp-json\/wp\/v2\/comments?post=26105"}],"version-history":[{"count":3,"href":"https:\/\/www.arvancloud.ir\/help\/wp-json\/wp\/v2\/posts\/26105\/revisions"}],"predecessor-version":[{"id":28040,"href":"https:\/\/www.arvancloud.ir\/help\/wp-json\/wp\/v2\/posts\/26105\/revisions\/28040"}],"wp:attachment":[{"href":"https:\/\/www.arvancloud.ir\/help\/wp-json\/wp\/v2\/media?parent=26105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.arvancloud.ir\/help\/wp-json\/wp\/v2\/categories?post=26105"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.arvancloud.ir\/help\/wp-json\/wp\/v2\/tags?post=26105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}