Questions tagged [root]

Question 1

I am looking at a script and it contains these two lines: HOME="$( grep ^root: /etc/passwd | awk -F ':' '{ print $6 }' )" export HOME This of course loads the variable named HOME with /...

Question 2

I am trying to extend the disk space on an AlmaLinux server (running on a VM). The goal is to add unallocated 10.00 GiB to the root partition (dev/sda2). What is the best way to do this without losing ...

Question 3

In /bin, I ran: $ ls -l python3 lrwxrwxrwx 1 root root 10 Aug 8 01:44 python3 -> python3.12 $ python3 --version Python 3.12.3 $ python3.12 --version Python 3.12.5 Can anyone explain why one is &...

Question 4

I need to temporality enable root SSH in a Fedora 40 workstation with key. SSH client logs confirms that the proper key is sent and accepted (copied below). sshd debug logs (also below) show the same, ...

Question 5

Consider the following sequence of commands. When I try to connect to the docker daemon as a regular user, or root, I can't. When I use sudo (both as a regular user and root) I can. Why is this? [john@...

Question 6

We have many Linux servers. The requirement is all Linux servers log in into each other password-less with root user. The problem is if a server is added / removed / reinstalled its SSH key needs to ...

Question 7

I've followed this guide to install ubuntu with root on zfs. I've skipped creating all the dedicated (sub) datasets in step 3.3. Now "zfs list" looks like: NAME USED ...

Question 8

Here's the problem I face: I have a program that must run as root. I want that to run in a screen, but here's a twist: for admin reasons, I want to be able to re-attach to it. I'm writing a dirty and ...

Question 9

I run myscript.sh scheduled in the root crontab and I need it to detect the non-root user (with which the system starts). I have tried these variants: local_user=${who -m | awk '{print $1;}'} ...

Question 10

Many files had their ownership changed to root in GCP and now I can't remove them. How do I change it back? GCP help is hard to come by. Thanks, -Marcos

Question 11

I'm starting learining and using ansible and struggling a bit with the user ansible uses for ssh. Is ansible supposed to use my personal admin user to ssh onto the invetory hosts and escalate ...

Question 12

I extended the bashrc file of my linux user. This file contains extra aliases, functions, whatever is useful. It's synchronized with a playbook across our 100+ servers. When i'm working on linux I ...

Question 13

I can't login via root user at the moment . If I do a hardware reboot on the server , the problem is solved and I can login for just once before I'm locked out again after like 5 minutes . I have read ...

Question 14

as simple user, first I pass root with command : su I am now root on Debian 10 buster. When I hit ufw status, I have 'command not found'. But it works with sudo ufw status When I use su -, the command ...

Question 15

[Ubuntu server] I was able to login to the server just fine for days. And now I cannot login with the root user with password and private key both are not working. Luckily I am currently logged in as ...

Question 16

Please share some true use cases of benefits when you are the only admin of manage VPSs, I'm just hosted my first WordPress site. A lot of guide I read online suggests creating a new user after update ...

Question 17

I've created a samba share on an ubuntu server called teslausb with the following lines specified in smbd.conf: [teslausb] comment = John's home share on Ubuntu path = /mnt/sdb1/teslausb ...

Question 18

Am looking to add an alias for the root user to log to the server with a different password So I followed this advice https://serverfault.com/a/870301/429729 by using the following command useradd -o -...

Question 19

fresh installation of mariaDB 10.5.12 on debian 11 was hardened with 'mysql_secure_installation' script, question "Switch to unix_socket authentication [Y/n]" was answered with 'yes'. Now ...

Question 20

On my Linux server (Ubuntu 18.04.6 LTS) I have set PermitRootLogin no in /etc/ssh/sshd_config and reloaded the config with sudo service sshd reload But I am still seeing Mar 14 06:18:02 myhost sshd[...

Question 21

I'm trying to understand the technical arguments/security implications between ssh'ing with root directly, or making an auxiliary sudo user in the context of maintaining a server. To clarify, we're ...

Question 22

I run a VPS, on a Linux Server, with CentOS 7 (64 bits) being the chosen Operating System. I have recently wiped the VPS, so it only has a clean install of Plesk Onyx at the moment. I would now like ...

Question 23

I just make a fresh Docker container. But, when I try to enable ufw, I get the following error message: # ufw enable ERROR: problem running ufw-init modprobe: ERROR: ../libkmod/libkmod.c:586 ...

Question 24

I need to run command (only one command) as a non root user from cron. Have tried two versions and both fails; Cron: * * * * * php script.php script.php: exec("whoami"); // returns 'root' //...

Question 25

Should a wheel user that was created to disable root login and secure SSH have the same ownership as root from a security point of view?

Question 26

I've been working lately on an AWS EC2 instance with ubuntu. This is my first experience working with servers, so I'm really new to this. Lately I've noticed my free space has completely filled up for ...

Question 27

I work at a large research institute (10k users) with various systems (Mostly Windows and Ubuntu Linux). I am not an expert in such network structures but I work at home with Ubuntu myself and like to ...

Question 28

I'm currently trying to fiddle around with a location block that has a different root. However I have some issues when accessing files that are in a subfolder on the different root. Here is my broken ...

Question 29

A Ubuntu 18.04 LTS server VM has entered Read-Only Mode, to the point that basic commands such as ls are not executed anymore, and return the error message -bash: /usr/bin/ls: Input/output error, ...

Question 30

I have asked this question yesterday but it was marked as duplicate and closed because of its context, as it was thought to be an X/Y question, whereas I was just interested in the general matter of &...

Question 31

I am using CentOS 6.8. I have an executable called railgun, whose user and group are both set to root. I then use the root user to start it as a service, as below: service railgun start However, it ...

Question 32

We're trying to rewrite a draconian screen session killer for users who leave their screen sessions up for an inordinate amount of time and have in some way or other circumvented our session timeouts. ...

Question 33

I recently installed anaconda (which includes a new python3) locally in my account folder on a cluster with a dozen of nodes (each node with several cores). I use it to install some package P that is ...

Question 34

Is there a security benefit running a command remotely via ssh as a local non-root user? In other words, is this actually more dangerous compared to executing the ssh command as non-root: root@local:~#...

Question 35

I have set up a Samba share, and it is only writable by root. For example, I can only create a folder on that share with sudo: ~$ mkdir /mnt/SHARE/somedir mkdir: cannot create directory /mnt/SHARE/...

Question 36

I'd like to create new user namespace being root with the command: # unshare -U bash $ echo $$ 3500 $ id uid=65534(nobody) ... etc After that I edit /proc/3500/uid_map im my initial namespace as root:...

Question 37

i know that one reason for /root not being in /home is that usually /home is mounted on a different disk and if it were to fail, we still want root to be accessible. What are some of the other reasons ...

Question 38

I know the access via root won't work (client sshd_config and restricted account in FreeIPA). But is there a way to blacklist root either on the host or on FreeIPA so it's denied immediately rather ...

Question 39

I'm facing the problem of securing an embedded platform. All ssh hardening have been setup, including 2 factor authentication and login with ssh key pairs. Now, the root and user passwords are ...

Question 40

The openshift documentation reads : To further protect RHCOS systems in OpenShift Container Platform clusters, most containers, except those managing or monitoring the host system itself, should run ...

Question 41

I have a bash script that runs over crontab as root. On the bottom of that script I want to run another bash script as another user in a subshell (detached). How can I do that The normal command would ...

Question 42

We are trying to start logging all executed commands by users (including root) on CentOS using auditd with type=USER_CMD, how we can do it? We already getting commands, starting with sudo, but not ...

Question 43

I'm checking my web page performance, but some strange reason it double calls to root path. Any idea why this is happening? Thank you.

Question 44

I get the following error: Permission denied var/run/nginx.pid Inside my nginx docker container the problem is the user running is unprivileged user with a random userid (forced by my company ...

Question 45

I'm attempting to batch create some users from a file using the newusers util on ubuntu 18. When running in cron as the root user, nothing happens. When I run the command manually, it works as ...

Question 46

I did upgrade on a Fedora Server and was SHOCKED to discover thousands of root attacks on my publicly facing servers and I can't seem to figure out how to stop them! To be clear; It IS possible to log ...

Question 47

We have some legacy servers which runs on ubuntu 14.04 and we need to execute zabbix-agentd as root for getting some performance information. zabbix-agentd version = 5.0 I've followed this guide but ...

Question 48

I recently started trying out EC2 servers and came across an issue when trying to get an instance back up from a snapshot (which is another odd issue I had, because you can't change root snapshots in ...

Question 49

I have to quantify slow here. It is noticeably slow, but not extreme. Here is a test I did. I pasted the below (time in nanoseconds command) on terminal as a non-root user and then as root user (I ...

Question 50

Due to conflicting and constantly changing permissions on mounted drives (which cannot easily be solved due to the development structure of programs), there is a script that must be run with root ...