Rhel 7 Cannot Login As Root

Please note that this is the default CentOS-7 image that we recommend everyone uses. Instead, we can log in as any other user and switch to root once inside. In this post we will learn, how to reset / recover forgotten root password on CentOS 7 / RHEL 7 (Red Hat Enterprise Linux 7). That's all you have to learn to reset CentOS 7 root password default or change root password CentOS 7 using command line. DVD embedded Kickstart for RHEL 7 utilizing SCAP Security Guide (SSG) as a hardening script. Passwords do not echo to the screen when you enter them. x Tomcat 7 implements the JavaServer Pages 2. I n this article we are going to learn how to configure XRPD Remote Desktop Server in Linux Systems, Before that let me explain you what is XRDP. There are many proxy server software which can provide both SOCKS4 proxy and SOCKS5 proxy, but here we are going to setup using SS5 for Linux CentOS 7. i disabled gdm and tried loggin in as root, problem persists. A system administrator can easily reset passwords for users who have forgotten theirs. This article will help you to reset the root password on Redhat enterprise Linux 7 (If you have lost it). Red Hat is the world's leading provider of enterprise open source solutions, including high-performing Linux, cloud, container, and Kubernetes technologies. As a Linux Administrator some time we face challenges when some how we forgot the root password and without root access we can't do any kind of administrative task's in Linux. That's all from this tutorial. To break password of root in RHEL 7, you press e on the default kernel highlighted in GRUB, append /sysroot/bin/sh[or something like it, find online] to the /vmlinuz line and press ctrl+x to boot on fake root. By default when you install CentOS 7 and SSH server, the root account automatically have remote access via SSH. To boot into Anaconda rescue mode, you must be able to boot the system using one CentOS boot media, such as a minimal boot disc or USB drive, or a full installation DVD. 2019-10-27: When installing via vmware ESXi or vmware/VNC server half installer buttons goes off screen 0016659 [] selinux-polic. Not only will this give them access to the server but we will also grant this user admin privileges, enabling them with maximum access. 0 VM, running under VirtualBox. This is the Official CentOS 7 x86_64 HVM image that has been built with a minimal profile, suitable for use in HVM instance types only. Actual Results: I receive. New updated tutorial, you will learn how to change the root password in Linux. You need to follow some special instruction on Redhat. Granting SUDO access to a local user account in RHEL/CentOS by Shusain · Published August 12, 2017 · Updated March 12, 2018 It has always been advised that use of 'root' account should be limited, as root has access to anything & everything on a Linux system. This means that you cannot login as root directly or use the su command to become the root user. With the advent of RHEL7 this is no longer the case. For RHEL / CentOS 7 the steps are completely different and a little trickier than it was in older RHEL versions. Locate the No thanks, just start my download link and pass the link URL as a parameter to rpm. Listed below are the step by step procedures to reset the root password in different versions of CentOS, CoreOS, Debian, Ubuntu and FreeBSD. Howto Reset Root Passwords on RHEL 7 and CentOS 7 Linux Systems. 0] Examining the guest [ 12. Login to your CentOS 7 server using sudo or root user credentials, setup its FQDN and basic networking setup to make sure that you are connected with the Internet. First I thought that /root is a symlink but symlinks are cian blue and here I have dark blue. If you want to configure sudo for an existing user, just add your user to the wheel group, as shown in step 4. Disable Root SSH Logon On CentOS 7 When managing online servers that can be accessed from anywhere, you may want to add some level of security by disabling SSH logon for the root account. Instead, we can log in as any other user and switch to root once inside. Open Terminal ( Applications -> System Tools -> Terminal ). I can only login as root. Let's go back to our sudoers file (which is, by the way, well commented on CentOS 5). Please let me know what details are required to help me troubleshoot this issue. See Fedora YUM release upgrades or upgrade Redhat 6 to 7. [Update August 2016]: I have passed the RHCE exam. qcow2: 2017-05-09 08:47 : 1. Not able to change the root password in single user mode Resolution. How to Reset the Root password. Learn how to install and deploy a Red Hat Enterprise Linux 7 (RHEL7) on VirtualBox in this step by step blog post. Various distribution configure single user mode differently. Unlike earlier versions, here mysql set a default password while starting it for first time. Or login using a Red Hat Bugzilla account Bug 180943 - Cannot login on system's console. When I try to login with the root user on the LAN, I do like: Browse other. Nautilus "Open in Terminal" on Fedora/CentOS/Red Hat (RHEL) Updated on March 10, 2011 by JR 4 comments This is quick tip howto add "Open in Terminal" to Nautilus (Gnome File Manager) context menu on Fedora, CentOS and Red Hat (RHEL). 7, this shouldn't be an issue anymore. Alternatively for RHEL 7. Start an instance with a CentOS public image. Working operating system - Only root password being unknown; A w orking GRUB boot loader; Note that CentOS 7 and RHEL 7 comes with GRUB version 2. On this article you will learn where to find the auto-generate MySQL 5. After I installed it and started the process (sudo service mysql start), I cannot login as root even though I originally set the password to blank. When I try to SSH with the same username/password, however, I repeatedly get Access Denied errors. This article describes the boot process for CentOS/RHEL 7. Resetting the root password requires rebooting your CentOS 7 machine, and then edit the GRUB parameters during boot time. 830 released. on Dec 16, 2017 at 18:01 UTC. In this article we will show you how to setup password-less login on CentOS 7, RHEL 7, RHEL 8 using ssh keys to connect to remote Linux servers without entering password. In this article, I will show you how to list users on CentOS 7. Firstly, though - the file is read-only - even to root (which is a pretty good indicator that you shouldn't be touching it). Logging into the Gnome/Gnome classic desktop from gdm works only for root. Please let me know what details are required to help me troubleshoot this issue. If you want to configure sudo for an existing user, just add your user to the wheel group, as shown in step 4. 2 All have the same problem. How do I restart sshd on my Unix system After you have changed your configuration on your remote Unix/linux server you must restart your ssh service. The post describes the procedure to reset the lost root password. Yum Configuration; Yum Examples and Use. After entering root as the username, enter the root password when prompted. We use sshd master configuration file to disable root login and this will may decrease and prevent the hacker from gaining root access to your Linux box. In Ubuntu, the root account is locked and cannot be used. 10 Tips for Getting Started with CentOS Linux on Hyper-V. If you want to configure sudo for an existing user, just add your user to the wheel group, as shown in step 4. Both of these options are described below. ignore the nasty message that pops up you now have root access. The way to reset the root password on centos7 is totally different to Centos 6. Make sure that the setuid scripts cannot be run by other users on your system, by setting the permissions on /usr/local/webmin to 700 and changing its ownership to the user your webserver runs as. Alternatively for RHEL 7. In the recovery mode, the root partition is mounted as read-only by default, and so you cannot change the root password as is. Starting it up but it errors out But wait, there's a process. This brief tutorial is going to show you a simple trick that you can use to reset your forgotten root password for CentOS 7 servers. I want to login as root, but when I enter. Granting SUDO access to a local user account in RHEL/CentOS by Shusain · Published August 12, 2017 · Updated March 12, 2018 It has always been advised that use of 'root' account should be limited, as root has access to anything & everything on a Linux system. The only solution for now is to add them | The UNIX and Linux Forums. We have documentation to help get started, mailing lists where you can connect with other users, and community-supported packages of the most up-to-date OpenStack releases available for download. Reboot the CentOS machine 2. Impostare la password di root di MySQL/MARIADB 'mysql_secure_installation' CentOS 7. The above will change the scheduler to "noop", which means that CentOS will not attempt to optimize I/O for the primary hard disk. Once logged in, my memory fails me as to exactly what you need to do but it would involve something like "sudo bash" and/or "su -" to become "real" root, or root enough to set a password for root. root cannot change the password of root Would it be possible that the user root is not part of the group root in your /etc/group file?. For other users, the screen flashes and the. Access-Denied any ideas anyone? My System = RedHat Linux 7. Ie mysql -u root will deny me access. The root user is disabled by default. The following is an example of how to use RPM: Log in as root, or use the su command to change to the root user at the workstation on which you want to install the software. If testing on a virtual machine, it may be necessary to restart the virtual machine for changes to take effect. So as a Linux system administration, knowing how to list the users on CentOS and other Linux distribution is must. By default, Red Hat Enterprise Linux's /etc/securetty file only allows the root user to log in at the console physically attached to the machine. 5 gui login root only. Click on a list name to get more information about the list, or to subscribe, unsubscribe, and change the preferences on your subscription. Difficulty EASY Conventions # - requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command $ - requires given linux commands to be executed as a regular non-privileged user. Server Administration July 27, How to reset hMailServer Administrator Password. Login with credentials does not. Enter the root password as the user password. The root password remains private. There are 20 questions in total. Take great care when editing files as the root user. Connect to your system using sudo privileged user or root credentials. Getting started 3. you trying to login as root or another user? If you're running Red Hat with Security Enchanced Linux enabled (SELinux. 7 root password. So as a Linux system administration, knowing how to list the users on CentOS and other Linux distribution is must. Install phpmyadmin on centos 7. unable to access user interface. [[email protected] root]# init q [[email protected] root]# pkill agetty Optional: Configure serial port as THE system console. In this article we will learn, how to reset forgot root password in. Conclusion. $ ssh-copy-id [email protected] The authenticity of host 'rhel-server (rhel-server)' can't be established. So in such case you need to change the permission of the directory to read using below chmod command:. In this tutorial, I will show you step-by-step on how to set up a VNC server on CentOS 7. To really get the most out of your Linux server, at some point you'll probably need to install something or change some configuration file that requires root/admin access. @nijel can you confirm if I am doing the right workaround to resolve this issue. 9+ you can enable single. If you've just installed MariaDB, and you haven't set the root password yet, the password will be blank, so you should just press enter here. 3, but the procedure is the same for any modern version of Python. CentOS 7 is one such system. Yum Configuration; Yum Examples and Use. so username=ask password=ask ip=127. Actual Results: I receive. There may come a time in your day to day activities where you need access to a RHEL/CentOS server or workstation and you do not have the root password. root login root - and now, I had two files to compare. You can browse for and follow blogs, read recent entries, see what others are viewing or recommending, and request your own blog. This guide contains configuration steps for both FTP and SFTP as well as user creation. Login via ssh using your sudo user 2. Caveat: Don't do this unless you have a good reason I store my home directory in lvm and occasionally need to unmount it to perform maintenance. 4) Azure VM. , Everything fine ( installed , sql enabled, can access sql from client (SSMS) ), but while connect RDP for Linux VM ( Azure) , getting below error, can any one explain step by step code (bash) to configure Linux VM RDP (RHEL 7. To me this screams permissions, but i checked every where i could think of, and didn't see anything wrong. /var/log/auth. You can use options in /etc/grub. Configure passwordless ssh CentOS. So I figured out how to reset mysql root user password for MariaDB 10. New updated tutorial, you will learn how to change the root password in Linux. To log in as the root user and enable remote display, then you cannot install the software on this system. Disable SSH. If you still cannot login remotely, then do this: Create a new user on the machine. Press the button to proceed. Access your server in the Vultr customer portal, then follow the steps below for the operating system installed on your server. So instead you can create a ROOT privilege user and change the connection type to TCP in PMA config file, after that you will be able to login as a ROOT user. Starting it up but it errors out But wait, there's a process. By default, Red Hat Enterprise Linux 7's /etc/securetty file only allows the root user to log in at the console physically attached to the machine. To enable ssh root login. To prevent the root user from logging in, remove the contents of this file by typing the following command at a shell prompt as root :. Credit for the echo method goes to the authors at nixCraft. By default, we can not login VSFTPd with root cannot change. Reboot the CentOS machine 2. I have configured a VM running CentOS 6. I have a T1 line that works fine on Windows 98. Installing LibreNMS LibreNMS VMs Ubuntu 18. Try with "secur4u" it will be default password for root. Rescue a Red Hat Enterprise Linux system :-Select this option to repair the existing RHEL system. Locate the No thanks, just start my download link and pass the link URL as a parameter to rpm. 7 introduces lot of ways to improve server security, however in this case this missing root password thing has been causing lot of confusion among MYSQL server users. However, the versions included are usually outdated and out of support. Root Privileges. 10 yum install mysql-community-server This ensures that someone cannot guess at the root password from the network. 2 - Scientific Linux 6. By default, Red Hat Enterprise Linux 7's /etc/securetty file only allows the root user to log in at the console physically attached to the machine. Privileged access to your CentOS 7 installation and existing user account to enable Automatic login upon. 830 released. A forum for discussing BigFix, previously known as IBM Endpoint Manager. The procedure described here disallows direct root login, so when you connect using SSH you need to first login as a normal user, then su to obtain root access. I know I could type su - but in the end I will just continue to log in as root while playing around and learning. If the root password is lost, there are four main options: Use single user mode if it is not password protected. I have a CentOS 7. So when enabling it, have security in mind. In order to be able to reset the root password, you need to re-mount the root partition as read-write. Presentation of MariaDB. To break password of root in RHEL 7, you press e on the default kernel highlighted in GRUB, append /sysroot/bin/sh[or something like it, find online] to the /vmlinuz line and press ctrl+x to boot on fake root. sudo su - or su - Step 2: Install ksh package. If the root password is lost, there are four main options: Use single user mode if it is not password protected. In this article we are going to learn how to reset forgotten root password on RHEL/CentOS/Fedora 5/6 or earlier versions. Don't run runInstaller for Red Hat Enterprise Linux Advanced Server 3 (RHEL AS 3) yet! See Running Oracle Installation on Red Hat Enterprise Linux Advanced Server 3 for more information. Granting SUDO access to a local user account in RHEL/CentOS by Shusain · Published August 12, 2017 · Updated March 12, 2018 It has always been advised that use of 'root' account should be limited, as root has access to anything & everything on a Linux system. Yum Configuration; Yum Examples and Use. So when enabling it, have security in mind. 5 –> RHEL 7) via a tool called redhat-upgrade-tool. 4 on the CentOS 7 system. If you are root, then you are probably not exporting with the no_root_squash option; check /proc/fs/nfs/exports or /var/lib/nfs/xtab on the server and make sure the option is listed. Logging into the Gnome/Gnome classic desktop from gdm works only for root. Thankfully, this vulnerability only works in non-standard. bash*" files. root password : centos. We will now configure a Kerberos KDC that we can use for authentication. See “How to allow a normal user to run commands as root user using sudo. I can su to root after logging in as me. Đây là chương trình nguồn mở, miễn phí, ổn định và khá an tòan. The image contains just enough packages to run within AWS, bring up an SSH Server and allow users to login. Share Configuration. Now, to break whatever remaining rules of security having a root autologin didn't break, let's also give root an empty password. can't login as root on a remote Redhat Server. Start an instance with a CentOS public image. If you install MySQL 8. x or RHEL 7. In this tutorial, we will demonstrate How to Boot into Single User Mode in CentOS/RHEL 7. The password command tells me that the passwords (root and my account) have changed successfully. Works in all flavors. 3 – Go to the line of Linux 16 and change ro with rw init=/sysroot/bin/sh. For other users, the screen flashes and the. 2 - Oracle Linux 6. Start by logging in to your CentOS server as the root user. For accounts such as root, the direct login is typically disabled by default for security reasons. In this article, I will show you how to list users on CentOS 7. On a desktop Linux environment such as X Windows, log out of your session completely and then log back in. [5] The logs for sudo are kept in '/var/log/secure', but there are many kind of logs in it. A forum for discussing BigFix, previously known as IBM Endpoint Manager. They are available 24/7 and will take care of your request immediately. A virtual user is a user login which does not exist as a real login on the system in /etc/passwd and /etc/shadow file. This server hosts RPMS pkgs git repositories, as well as other sub-projects. How can I find out Mysql root password? If this is your first visit, be sure to check out the FAQ by clicking the link above. qcow2 --root-password password:CoolPasswordBro! [ 0. If you've lost your root password, you might be able to recover it using the steps below. I have a CentOS 7. How to SSH Root Login to CentOS 7. [5] The logs for sudo are kept in '/var/log/secure', but there are many kind of logs in it. When I try to SSH with the same username/password, however, I repeatedly get Access Denied errors. Install and Configure Sonarqube on Linux. But in Red hat Enterprise Linux 7 you can't. For full release notes, see the CentOS 7 documentation and the CentOS 6 documentation. [CentOS] CentOS 7. The above will change the scheduler to “noop”, which means that CentOS will not attempt to optimize I/O for the primary hard disk. It is to prepare for the RHCE exam based on RHEL 7, which I have yet to take. You need to follow some special instruction on Redhat. Difficulty EASY Conventions # - requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command $ - requires given linux commands to be executed as a regular non-privileged user. Open a shell prompt and type the passwd command to change root password in RHEL; The actual command to change the password for root is sudo passwd root; RHEL change root password command. When done, exit and reboot the system. Log into your server via SSH, then get to the root user by running:. See the "Gaining Privileges" chapter in the Red Hat Enterprise Linux 7 System Administrator's Guide. These commands add our setuid backdoor to the global profile file. So you have to install the gnome packages and it's dependencies to bring the system. For those that probably cannot keep up with Fedora releases every 6 months, CentOS 7 is a good consideration. In order to be able to reset the root password, you need to re-mount the root partition as read-write. 2 - CentOS 6. For now I'm not even trying to get it to work on my Linux partition, just to login as root, but even that I can't. 4, “Securing the Initial MySQL Account” on the different ways the password could have been assigned and, in some cases, how to find it. "exit" tells CentOS to exit from the root login back to your login. 2) While CentOS installs we can set the root password and create a user account. /var/log/auth. so the only way it worked was for the dev2 user to have r and execute access to the /srv/samba_multiuser share folder via setfacl. 14 Troubleshooting Problems Connecting to MySQL. This server hosts RPMS pkgs git repositories, as well as other sub-projects. If you can log in to your Mac with an administrator account, you can enable the root user, then log in as the root user to complete your task. SUDO_PS1' If set, PS1 will be set to its value for the program being run. Instead, we can log in as any other user and switch to root once inside. But as phpMyAdmin run's as non-root user you can't log in as ROOT. Resize disks in a Centos 7 Install Posted on January 21, 2016 by Adam Young The default layout for disks in a Centos deployment may make sense for the average use case, but not for using the machine as a Tripleo all-in-one development box. Install Tomcat 7 on CentOS, RHEL, or Fedora. The password command tells me that the passwords (root and my account) have changed successfully. Now login as root user. I can login to my users through the console, but cannot from the GUI login screen when booting the machine. Edit the /usr/bin/google-chrome and add the " -user-data-dir " at the end of the last line ( Line No: 84 ). There may come a time in your day to day activities where you need access to a RHEL/CentOS server or workstation and you do not have the root password. we can configure the root password and also set. 1 Distrib 5. Conclusion. Using Password-less login with SSH keys will increase the trust between two Linux servers for easy file synchronization or transfer. However, the experience may vary depending on how the system was provisioned. The way to reset the root password on centos7 is totally different to Centos 6. How to fix (fsck) a root file system that you have to boot into on Linux Two days ago I corrupted my file system during a failed resume from standby on Fedora 19. Once user is created, just follow the below steps to disable root login via SSH. The default configuration in centos let me login with root in to gnome, ssh and console(tty1-tty6) for this reason I thought it was a problem. 2 - Select Option to edit (e). To break password of root in RHEL 7, you press e on the default kernel highlighted in GRUB, append /sysroot/bin/sh[or something like it, find online] to the /vmlinuz line and press ctrl+x to boot on fake root. But luckily there is a easy way to recover the forgotten password. After that, login to the discovered target and create & mount your file system. However, you can usually get around the need for root ssh login by using the sudo command. We will install a Linux XFCE desktop on the server, then install and configure VNC server using TigerVNC. CentOS 7 will also be shipping with MariaDB, a replacement for MySQL. break" to the end of the line. On this article you will learn where to find the auto-generate MySQL 5. By default, the root user is disabled on Linux virtual machines in Azure. CentOS / RHEL : How to Disable / Enable direct root and non-root user ssh login - The Geek Diary. If you have forgot the MySQL root password, can’t remember or want to break in…. However, you can usually get around the need for root ssh login by using the sudo command. Open a shell prompt and type the passwd command to change root password in RHEL; The actual command to change the password for root is sudo passwd root; RHEL change root password command. 7, this shouldn't be an issue anymore. Outlook 2007/2010 notification alert and desktop alert on new item does not work in Windows 7 4 thoughts on “ How to add user into sudoers in Red Hat Linux server ” Deco says:. 3) Click Root Password:. In the root folder (/) i have a folder called root (/root). This is the Official CentOS 7 x86_64 HVM image that has been built with a minimal profile, suitable for use in HVM instance types only. I want to login as root, but when I enter. As the default MariaDB installation uses the /var/lib/mysql directory to store your databases, keep in mind that the partition or logical volume associated with /var needs adequate space. so username=ask password=ask ip=127. Because the CentOS installation process might differ across versions, the installation steps might differ if you use a different version of CentOS. CentOS 7 is out and I wanted to test it on real hardware. Follow the steps below to create a sudo user on your CentOS server: 1. on Dec 16, 2017 at 18:01 UTC. Users can run commands with elevated privileges by using the sudo command. Enter the following command to list the contents of the /root directory: sudo ls -la /root. User account management is one of the most critical jobs of system admins. When done, exit and reboot the system. To log in as the root user and enable remote display, then you cannot install the software on this system. I've read that the /root folder is the root user folder but I don't get in it. When you need to "become root" this is the command you use. 10 Tips for Getting Started with CentOS Linux on Hyper-V. This ensures that someone cannot guess at the root password from the. First login with the user account you created. vsftpd (Very Secure File Transport Protocol Daemon) is a secure, fast FTP server for Unix/Linux systems. 0 OS in GUI mode. SSH log in access denied in RHEL 7. However, the experience may vary depending on how the system was provisioned. There are two ways to install the most recent version. After years w/vanilla MySQL we're working to jump to Percona. Howto Reset Root Passwords on RHEL 7 and CentOS 7 Linux Systems. Warning: /dev/root does not exist while installing centos 7. To prevent the root user from logging in, remove the contents of this file by typing the following command at a shell prompt as root :. Credit for the echo method goes to the authors at nixCraft. [CentOS] CentOS 7. 0 offering user base login in to GUI mode, but I can't login. Or, as someone suggested, you could use kdm for login, and right *there* it offers you a choice of which window manager to use, as opposed to gnome, that wants to lock you in, like, say, someone north of Seattle mark "me? anti. The image contains just enough packages to run within AWS, bring up an SSH Server and allow users to login. Resize disks in a Centos 7 Install Posted on January 21, 2016 by Adam Young The default layout for disks in a Centos deployment may make sense for the average use case, but not for using the machine as a Tripleo all-in-one development box. How To Reset Root User Password In CentOS/RHEL 7 Posted by Jarrod on September 14, 2016 Leave a comment (40) Go to comments Normally resetting the root password is a simple task if you're logged in already with root privileges, however if you forget the password and need to change it things become a little more difficult. MySQL Installation Remove/Uninstall the MariaDB package if it’s installed in CentOS 7. 10 Tips for Getting Started with CentOS Linux on Hyper-V. RabbitMQ is included in standard Fedora and RHEL repositories. CentOS (abbreviated from Community Enterprise Operating System) is a Linux distribution that attempts to provide a free, enterprise-class, community-supported computing platform which aims to be 100% binary compatible with its upstream source, Red Hat Enterprise Linux (RHEL). The root password and at least one user account must be created for installation to complete. Log into your server via SSH, then get to the root user by running:. Samba is an opensource and most popular package that provides file and print service using SMB/CIFS protocol. In this article we are going to learn how to reset forgotten root password on RHEL/CentOS/Fedora 5/6 or earlier versions. When done, exit and reboot the system. I can login to my users through the console, but cannot from the GUI login screen when booting the machine. CentOS 7 has greatly improved from version 6. The way to reset the root password on centos7 is totally different to Centos 6. Basic Setup. We can integrate our RHEL 7 and CentOS 7 servers with AD(Active Directory) for authenticate purpose. Unfortunately most of current methods to transfer bootable ISO to USB key in MS windows environment do not work (see quote below) or boots, but does not recognize installation media in case of Fedora LiveUSB Creator (suggested in RHEL 7 Installation guide). Note: This is an RHCE 7 exam objective. 7 root password. Let's go back to our sudoers file (which is, by the way, well commented on CentOS 5). Login via ssh using your sudo user 2. How to fix (fsck) a root file system that you have to boot into on Linux Two days ago I corrupted my file system during a failed resume from standby on Fedora 19. 3 RPMs for RHEL 7. Log out and log back in so that your group membership is re-evaluated. When you need to "become root" this is the command you use. After I installed it and started the process (sudo service mysql start), I cannot login as root even though I originally set the password to blank. The examples below are for Python 2. This was originally enabled as a security precaution which means that you cannot directly log in as the root user over SSH.