{"id":6038,"date":"2024-06-01T05:53:26","date_gmt":"2024-06-01T05:53:26","guid":{"rendered":"https:\/\/natsav.com\/blog\/?p=6038"},"modified":"2024-08-02T06:52:39","modified_gmt":"2024-08-02T06:52:39","slug":"how-to-change-password-in-centos-7-via-command-line","status":"publish","type":"post","link":"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/","title":{"rendered":"How to Change Password in CentOS 7 via Command Line"},"content":{"rendered":"\n<p><strong>How to Change Password in CentOS 7 via Command Line,<\/strong> Resetting the root password on CentOS Linux is a crucial skill for system administrators and IT professionals. The root account has complete control over the system, so maintaining access is essential for managing and securing your server. In this comprehensive guide, we will walk you through the steps required to reset the root password on CentOS Linux, ensuring you can regain control in case of a lost or forgotten password.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_68_1 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\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 href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/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:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Preparation_How_to_Change_Password_in_CentOS_7_via_Command_Line\" title=\"Preparation How to Change Password in CentOS 7 via Command Line\">Preparation How to Change Password in CentOS 7 via Command Line<\/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:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Understand_the_Consequences\" title=\"Understand the Consequences\">Understand the Consequences<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Backup_Important_Data\" title=\"Backup Important Data\">Backup Important Data<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Access_to_the_System\" title=\"Access to the System\">Access to the System<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Boot_into_Single-User_Mode\" title=\"Boot into Single-User Mode\">Boot into Single-User Mode<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Access_GRUB_Boot_Menu\" title=\"Access GRUB Boot Menu\">Access GRUB Boot Menu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Edit_Boot_Parameters\" title=\"Edit Boot Parameters\">Edit Boot Parameters<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Boot_into_Single-User_Mode-2\" title=\"Boot into Single-User Mode\">Boot into Single-User Mode<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Resetting_the_Password\" title=\"Resetting the Password\">Resetting the Password<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Mount_Root_Filesystem\" title=\"Mount Root Filesystem\">Mount Root Filesystem<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Change_the_Password\" title=\"Change the Password\">Change the Password<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Remount_Filesystem_in_Read-Only_Mode\" title=\"Remount Filesystem in Read-Only Mode\">Remount Filesystem in Read-Only Mode<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Reboot_the_System\" title=\"Reboot the System\">Reboot the System<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Exit_Single-User_Mode\" title=\"Exit Single-User Mode\">Exit Single-User Mode<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Test_the_New_Password\" title=\"Test the New Password\">Test the New Password<\/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:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Post-Reset_Security_Measures\" title=\"Post-Reset Security Measures\">Post-Reset Security Measures<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Update_System_Software\" title=\"Update System Software\">Update System Software<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Review_Security_Policies\" title=\"Review Security Policies\">Review Security Policies<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Audit_System_Logs\" title=\"Audit System Logs\">Audit System Logs<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Preventive_Measures_for_the_Future\" title=\"Preventive Measures for the Future\">Preventive Measures for the Future<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Implement_Strong_Password_Policies\" title=\"Implement Strong Password Policies\">Implement Strong Password Policies<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Enable_Multi-Factor_Authentication_MFA\" title=\"Enable Multi-Factor Authentication (MFA)\">Enable Multi-Factor Authentication (MFA)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Regular_Backups\" title=\"Regular Backups\">Regular Backups<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Restrict_Root_Access\" title=\"Restrict Root Access\">Restrict Root Access<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Troubleshooting_Common_Issues\" title=\"Troubleshooting Common Issues\">Troubleshooting Common Issues<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#GRUB_Boot_Issues\" title=\"GRUB Boot Issues\">GRUB Boot Issues<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Filesystem_Errors\" title=\"Filesystem Errors\">Filesystem Errors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Password_Reset_Failures\" title=\"Password Reset Failures\">Password Reset Failures<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#FAQs\" title=\"FAQs\">FAQs<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#What_is_CentOS_Linux\" title=\"What is CentOS Linux?\">What is CentOS Linux?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Why_Reset_the_Root_Password\" title=\"Why Reset the Root Password?\">Why Reset the Root Password?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Can_I_Reset_the_Root_Password_Remotely\" title=\"Can I Reset the Root Password Remotely?\">Can I Reset the Root Password Remotely?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#How_Often_Should_I_Change_the_Root_Password\" title=\"How Often Should I Change the Root Password?\">How Often Should I Change 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-34\" href=\"https:\/\/natsav.com\/blog\/how-to-change-password-in-centos-7-via-command-line\/#Conclusion\" title=\"Conclusion\">Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Preparation_How_to_Change_Password_in_CentOS_7_via_Command_Line\"><\/span>Preparation How to Change Password in CentOS 7 via Command Line<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Understand_the_Consequences\"><\/span>Understand the Consequences<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>How to Change Password in CentOS 7 via Command Line, Resetting the root password is not a task to be taken lightly. It is important to understand the potential consequences, including the risk of losing access to encrypted data or causing system instability. Ensure that you are aware of the implications and are prepared to handle any issues that may arise during the process.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/06\/How-to-Change-Password-in-CentOS-7-via-Command-Line.png?resize=800%2C500&#038;ssl=1\" alt=\"How to Change Password in CentOS 7 via Command Line\" class=\"wp-image-7168\" srcset=\"https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/06\/How-to-Change-Password-in-CentOS-7-via-Command-Line.png?w=800&amp;ssl=1 800w, https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/06\/How-to-Change-Password-in-CentOS-7-via-Command-Line.png?resize=300%2C188&amp;ssl=1 300w, https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/06\/How-to-Change-Password-in-CentOS-7-via-Command-Line.png?resize=768%2C480&amp;ssl=1 768w, https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/06\/How-to-Change-Password-in-CentOS-7-via-Command-Line.png?resize=150%2C94&amp;ssl=1 150w\" sizes=\"(max-width: 800px) 100vw, 800px\" data-recalc-dims=\"1\" \/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Backup_Important_Data\"><\/span>Backup Important Data<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Before proceeding with the password reset, it is essential to backup any important data. This can prevent data loss in case something goes wrong during the process. Use tools like <code>rsync<\/code>, <code>tar<\/code>, or <code>dd<\/code> to create backups of critical files and directories.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Access_to_the_System\"><\/span>Access to the System<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>How to Change Password in CentOS 7 via Command Line, To reset the root password, you will need physical access to the server or a method to access it remotely if physical access is impossible. Ensure you have the necessary permissions and tools to interact with the system at the boot level.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Boot_into_Single-User_Mode\"><\/span>Boot into Single-User Mode<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Access_GRUB_Boot_Menu\"><\/span>Access GRUB Boot Menu<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>How to Change Password in CentOS 7 via Command Line, The first step in resetting the root password is to access the GRUB boot menu. This can be done by rebooting the system and pressing a key (usually <code>Esc<\/code> or <code>Shift<\/code>) to interrupt the boot process and bring up the GRUB menu. If you encounter issues accessing GRUB, ensure that the appropriate key is being pressed at the right time.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Edit_Boot_Parameters\"><\/span>Edit Boot Parameters<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Once you have accessed the GRUB menu, you will need to edit the boot parameters to enter single-user mode. Highlight the CentOS boot entry and press <code>e<\/code> to edit. Locate the line starting with <code>linux<\/code> or <code>linux16<\/code> and append <code>rd.break<\/code> to the end of this line. This will instruct the system to break into single-user mode during the boot process.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Boot_into_Single-User_Mode-2\"><\/span>Boot into Single-User Mode<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>How to Change Password in CentOS 7 via Command Line, After editing the boot parameters, press <code>Ctrl<\/code> + <code>x<\/code> or <code>F10<\/code> to boot the system with the modified parameters. The system should boot into single-user mode, where you will have root access without needing a password. Verify that you have successfully entered single-user mode by checking the command prompt.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/08\/How-to-Change-Password-in-CentOS-7-via-Command-Line-1.png?resize=800%2C500&#038;ssl=1\" alt=\"\" class=\"wp-image-7170\" srcset=\"https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/08\/How-to-Change-Password-in-CentOS-7-via-Command-Line-1.png?w=800&amp;ssl=1 800w, https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/08\/How-to-Change-Password-in-CentOS-7-via-Command-Line-1.png?resize=300%2C188&amp;ssl=1 300w, https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/08\/How-to-Change-Password-in-CentOS-7-via-Command-Line-1.png?resize=768%2C480&amp;ssl=1 768w, https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/08\/How-to-Change-Password-in-CentOS-7-via-Command-Line-1.png?resize=150%2C94&amp;ssl=1 150w\" sizes=\"(max-width: 800px) 100vw, 800px\" data-recalc-dims=\"1\" \/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Resetting_the_Password\"><\/span>Resetting the Password<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mount_Root_Filesystem\"><\/span>Mount Root Filesystem<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>In single-user mode, the root filesystem is mounted in read-only mode by default. To change the root password, you need to remount it in read-write mode. Use the following command to remount the root filesystem:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><strong>bash Copy code <code>mount -o remount,rw \/sysroot<\/code><\/strong><code><br><\/code><\/pre>\n\n\n\n<p>If you encounter any issues while mounting the filesystem, ensure that you have correctly entered the command and that the filesystem is not corrupted.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Change_the_Password\"><\/span>Change the Password<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>How to Change Password in CentOS 7 via Command Line, With the root filesystem mounted in read-write mode, you can proceed to change the root password. Access the chroot environment by running:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><strong>bash Copy code <code>chroot \/sysroot<br><\/code><\/strong><\/pre>\n\n\n\n<p>Then, use the <code>passwd<\/code> command to set a new root password:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><strong>bash Copy code <code>passwd<br><\/code><\/strong><\/pre>\n\n\n\n<p>Enter the new password when prompted and confirm it. Ensure the password meets your security policies.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Remount_Filesystem_in_Read-Only_Mode\"><\/span>Remount Filesystem in Read-Only Mode<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>After changing the password, it is good practice to remount the root filesystem in read-only mode before exiting single-user mode. Use the following command:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><strong>bash Copy code <code>mount -o remount,ro \/sysroot<br><\/code><\/strong><\/pre>\n\n\n\n<p>This step helps ensure that no unintended changes are made to the filesystem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Reboot_the_System\"><\/span>Reboot the System<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Exit_Single-User_Mode\"><\/span>Exit Single-User Mode<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>How to Change Password in CentOS 7 via Command Line, To exit single-user mode and reboot the system, use the following command:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><strong>bash Copy code <code>exit<br><\/code><\/strong><\/pre>\n\n\n\n<p>The system will continue with the normal boot process. Verify that the system boots up correctly and that no errors are encountered during the boot.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Test_the_New_Password\"><\/span>Test the New Password<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>How to Change Password in CentOS 7 via Command Line, Once the system has rebooted, test the new root password by logging in as the root user. Ensure that you can access the system with the new password and that there are no issues with authentication. If you encounter any problems, double-check the steps and ensure that the password was set correctly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Post-Reset_Security_Measures\"><\/span>Post-Reset Security Measures<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Update_System_Software\"><\/span>Update System Software<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Keeping your CentOS system up-to-date is crucial for maintaining security. After resetting the root password, ensure that all system software is updated. Use the following commands to update the system:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><strong>bash Copy code <code>yum update<br><\/code><\/strong><\/pre>\n\n\n\n<p>Regular updates help protect your system from vulnerabilities and security threats.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Review_Security_Policies\"><\/span>Review Security Policies<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>How to Change Password in CentOS 7 via Command Line, Review and update your security policies to ensure they are robust and effective. Implement measures to prevent unauthorized access and regularly audit your system for potential vulnerabilities. Use tools like <code>fail2ban<\/code> and <code>auditd<\/code> to enhance security.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Audit_System_Logs\"><\/span>Audit System Logs<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Regularly auditing system logs can help you detect any suspicious activities and potential security breaches. Use commands like <code>journalctl<\/code> and <code>logwatch<\/code> to review logs and identify any anomalies. Ensure that logs are stored securely and are regularly reviewed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Preventive_Measures_for_the_Future\"><\/span>Preventive Measures for the Future<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Implement_Strong_Password_Policies\"><\/span>Implement Strong Password Policies<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Enforce strong password policies to enhance the security of your system. Ensure that passwords are complex, contain a mix of characters, and are changed regularly. Use tools like <code>pam_pwquality<\/code> to enforce password policies.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Enable_Multi-Factor_Authentication_MFA\"><\/span>Enable Multi-Factor Authentication (MFA)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Implementing multi-factor authentication adds an additional layer of security to your system. Enable MFA for root and other critical accounts to protect against unauthorized access. Use tools like <code>google-authenticator<\/code> to set up MFA on CentOS.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Regular_Backups\"><\/span>Regular Backups<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>How to Change Password in CentOS 7 via Command Line, Set up automated backups to ensure that your data is always protected. Use tools like <code>cron<\/code>, <code>rsync<\/code>, and <code>tar<\/code> to create regular backups of critical files and directories. Store them securely in multiple locations to safeguard against data loss.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Restrict_Root_Access\"><\/span>Restrict Root Access<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Limit root access to only those who absolutely need it. Implement the principle of least privilege by using sudo for administrative tasks and creating separate accounts for regular use. Configure sudoers to restrict commands that can be executed as root.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Troubleshooting_Common_Issues\"><\/span>Troubleshooting Common Issues<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"GRUB_Boot_Issues\"><\/span>GRUB Boot Issues<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>If you encounter issues with the GRUB boot loader, there are several common problems to troubleshoot. These include:<\/p>\n\n\n\n<ul>\n<li class=\"has-medium-font-size\"><strong>Missing GRUB Menu<\/strong>: Ensure that you are pressing the correct key to access the GRUB menu. This is typically <code>Esc<\/code>, <code>Shift<\/code>, or <code>F2<\/code>, depending on your system.<\/li>\n\n\n\n<li class=\"has-medium-font-size\"><strong>Corrupt GRUB Configuration<\/strong>: If the GRUB configuration is corrupted, you may need to restore it from a backup or regenerate it using the <code>grub2-mkconfig<\/code> command.<\/li>\n\n\n\n<li class=\"has-medium-font-size\"><strong>Boot Loader Errors<\/strong>: Errors such as &#8220;file not found&#8221; or &#8220;no such device&#8221; can often be resolved by checking the boot configuration and ensuring that all necessary files are present and accessible.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/08\/How-to-Change-Password-in-CentOS-7-via-Command-Line-1.png?resize=800%2C500&#038;ssl=1\" alt=\"How to Change Password in CentOS 7 via Command Line\" class=\"wp-image-7170\" srcset=\"https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/08\/How-to-Change-Password-in-CentOS-7-via-Command-Line-1.png?w=800&amp;ssl=1 800w, https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/08\/How-to-Change-Password-in-CentOS-7-via-Command-Line-1.png?resize=300%2C188&amp;ssl=1 300w, https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/08\/How-to-Change-Password-in-CentOS-7-via-Command-Line-1.png?resize=768%2C480&amp;ssl=1 768w, https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/08\/How-to-Change-Password-in-CentOS-7-via-Command-Line-1.png?resize=150%2C94&amp;ssl=1 150w\" sizes=\"(max-width: 800px) 100vw, 800px\" data-recalc-dims=\"1\" \/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Filesystem_Errors\"><\/span>Filesystem Errors<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>How to Change Password in CentOS 7 via Command Line, Filesystem errors can prevent successful booting or cause instability. Common issues and their resolutions include:<\/p>\n\n\n\n<ul class=\"has-medium-font-size\">\n<li><strong>Filesystem Check (fsck)<\/strong>: Use the <code>fsck<\/code> command to check and repair filesystem errors. This should be done while the filesystem is unmounted or in read-only mode.<\/li>\n\n\n\n<li><strong>Disk Space Issues<\/strong>: Ensure that there is sufficient disk space available. Use commands like <code>df<\/code> and <code>du<\/code> to monitor disk usage and free up space if necessary.<\/li>\n\n\n\n<li><strong>Inode Issues<\/strong>: If there are problems with inodes, <code>fsck<\/code> can help resolve these by repairing damaged inodes and restoring filesystem integrity.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Password_Reset_Failures\"><\/span>Password Reset Failures<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>If the password reset process fails, consider the following troubleshooting steps:<\/p>\n\n\n\n<ul>\n<li><strong>Ensure Single-User Mode Access<\/strong>: Verify that you have successfully entered single-user mode and have root access.<\/li>\n\n\n\n<li><strong>Correct Mounting<\/strong>: Double-check that the root filesystem is mounted in read-write mode before attempting to change the password.<\/li>\n\n\n\n<li><strong>Password Complexity<\/strong>: Ensure that the new password meets your system&#8217;s complexity requirements. Using a simple password might result in an error.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>FAQs<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_CentOS_Linux\"><\/span>What is CentOS Linux?<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>How to Change Password in CentOS 7 via Command Line, CentOS Linux is a free and open-source Linux distribution derived from the sources of Red Hat Enterprise Linux (RHEL). It is widely used for server environments due to its stability, security, and support for enterprise applications.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Reset_the_Root_Password\"><\/span>Why Reset the Root Password?<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>There are several reasons why you might need to reset the root password, including:<\/p>\n\n\n\n<ul class=\"has-medium-font-size\">\n<li>Forgotten password: If the root password is lost or forgotten, resetting it is necessary to regain administrative access.<\/li>\n\n\n\n<li>Security breach: If you suspect that the root password has been compromised, resetting it can help secure your system.<\/li>\n\n\n\n<li>Administrative control: Inherited systems or changes in personnel might require a password reset to maintain administrative control.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-medium-font-size\"><strong>For Our Best Hosting Plan (Dedicated Server, Cloud &amp; VPS)<\/strong> <strong><a href=\"https:\/\/www.natsav.com\/\">Click Here<\/a><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_I_Reset_the_Root_Password_Remotely\"><\/span>Can I Reset the Root Password Remotely?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>While it is possible to reset the root password remotely, it is generally not recommended due to security risks. Remote access requires secure channels, such as SSH with key-based authentication, and can expose your system to additional vulnerabilities. Physical access or console access through a secure management interface is preferred.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Often_Should_I_Change_the_Root_Password\"><\/span>How Often Should I Change the Root Password?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>It is good practice to change the root password regularly, typically every 3 to 6 months, to enhance security. Additionally, change the password immediately if there is any suspicion of compromise.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Resetting the root password on CentOS Linux involves several critical steps, including booting into single-user mode, remounting the filesystem, and changing the password. It is essential to understand the consequences, backup data, and follow security best practices throughout the process.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>How to Change Password in CentOS 7 via Command Line, Resetting the root password on CentOS Linux is a crucial skill for system administrators and IT professionals. The root account has complete control over the system, so maintaining access is essential for managing and securing your server. In this comprehensive guide, we will walk you [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7168,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[256],"tags":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/i0.wp.com\/natsav.com\/blog\/wp-content\/uploads\/2024\/06\/How-to-Change-Password-in-CentOS-7-via-Command-Line.png?fit=800%2C500&ssl=1","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/natsav.com\/blog\/wp-json\/wp\/v2\/posts\/6038"}],"collection":[{"href":"https:\/\/natsav.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/natsav.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/natsav.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/natsav.com\/blog\/wp-json\/wp\/v2\/comments?post=6038"}],"version-history":[{"count":6,"href":"https:\/\/natsav.com\/blog\/wp-json\/wp\/v2\/posts\/6038\/revisions"}],"predecessor-version":[{"id":7175,"href":"https:\/\/natsav.com\/blog\/wp-json\/wp\/v2\/posts\/6038\/revisions\/7175"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/natsav.com\/blog\/wp-json\/wp\/v2\/media\/7168"}],"wp:attachment":[{"href":"https:\/\/natsav.com\/blog\/wp-json\/wp\/v2\/media?parent=6038"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/natsav.com\/blog\/wp-json\/wp\/v2\/categories?post=6038"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/natsav.com\/blog\/wp-json\/wp\/v2\/tags?post=6038"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}