![]() If the settings are correct, you should be switched to the root user without having to provide a password.Īlthough it’s possible to enable passwordless sudo for all Linux users, we do not recommend it for security reasons. To test that the settings have been applied, connect to your server via SSH using the passwordless sudo user and run the following command: sudo -i Create a new file located here: /etc/sudoers.d/ ALL=(ALL) NOPASSWD:ALL You could run visudo and modify the core sudoers file, but a better option on Ubuntu 22.04 is to add a new configuration file to the /etc/sudoers.d/ folder. Using a sudo user, connect to the server via SSH. If you see the following error, you need to enable passwordless sudo for the specified Linux user. The SSH user requires root privileges and must be able to run sudo commands non-interactively. This is a Linux user that will be used by SpinupWP to connect to the server and set it up. $ man pam.If you’ve provisioned a server at your provider and are connecting it to SpinupWP, you will be asked to specify an SSH user. That’s all for now! For more information, see the PAM manual entry page ( man pam.conf) and that of sudo command as well ( man sudo). ![]() Now try to su to the account postgres as the user aaronk, the shell should not prompt you to enter a password: $ sudo su - postgres Then add the following configuration below the line “%sudo ALL=(ALL:ALL) ALL” as shown in the following screenshot. In this case, the user (for example aaronk) who will switch to another user account (for example postgres) should be in the sudoers file or in the sudo group to be able to invoke the sudo command. Every time I issue a sudo command the system asks for the user password (which is good in its own way). I am the sole person using my system with 12.04. You can also su to another user without requiring a password by making some changes in the sudoers file. Execute sudo without Password Ask Question Asked 10 years, 11 months ago Modified 1 year, 7 months ago Viewed 930k times 494 Inspired by this question. Now try to su to the postgres account as the user aaronk, you should not be prompted for a password as shown in the following screenshot: $ su - postgres Next, add the user (for example aaronk) that you want to su to the account postgres without a password to the group postgres using usermod command. auth sufficient pam_succeed_if.so use_uid user ingroup postgresĬonfigure PAM to Allow Running Su Command without Password Otherwise, the normal authentication steps are executed. We can also configure sudo usage without any passwords by tweaking this file. ![]() You can grant additional permissions to regular users by adding them to the sudoers list. Configure sudo Without Password The sudoers file in Linux allows admins to manage usage rights for different users. The line that follows checks if the current user is in the group postgres, if yes, the authentication process is considered successful and returns sufficient as a result. Luckily, you can easily use the sudo command without passwords. ![]() In the above configuration, the first line checks if the target user is postgres, if it is, the service checks the current user, otherwise, the default=1 line is skipped and the normal authentication steps are executed. This should now allow you to run the sudo command without being prompted for a password. auth pam_succeed_if.so user = postgresĪuth sufficient pam_succeed_if.so use_uid user ingroup postgres # vim /etc/pam.d/suĪdd the following configurations after “auth sufficient pam_rootok.so” as shown in the following screenshot. To allow users in a specific group to switch to another user account without a password, we can modify the default PAM settings for the su command in the /etc/pam.d/su file. ![]() PAM ( Pluggable authentication modules) are at the core of user authentication on modern Linux operating systems. You can use any of the two solutions provided below to solve the above issue. Any other user will be prompted to enter the password of the user account they are switching to (or if they are using the sudo command, they will be prompted to enter their password), if they don’t provide the correct password, they get an “ authentication failed” error as shown in the following screenshot. For example, we have a user account called postgres (the default PostgreSQL superuser system account), we want every user (typically our PostgreSQL database and system administrators) in the group called postgres to switch to the postgres account using the su command without entering a password.īy default, only the root user can switch to another user account without entering a password. In this guide, we will show how to switch to another or a specific user account without requiring a password. ![]()
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