sudo is a tool which allows users to run commands as another user (usually the root user)

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27
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4answers
6k views

How can I implement ansible with per-host passwords, securely?

I would like to use ansible to manage a group of existing servers. I have created an ansible_hosts file, and tested successfully (with the -K option) with commands that only target a single host ...
0
votes
1answer
28 views

How do I create files in directory owned by user in same group without sudo?

I have created a user to own website files (drupal) and added that user to www-data, so essentially all files are drupaluser:www-data. I want to go in and put the site in to git but I get permission ...
1
vote
1answer
1k views

winbind separator and group name behavior in getent group, constantly changing

I have a problem that occasionally apprears-dissapears and it drives me nuts. My Debian servers are authenticated against AD and only "linuxadmins" group member can SSH to server and "sudo su". SSH ...
54
votes
7answers
22k views

Sudo as different user and running screen

Found out today that running screen as a different user that I sudo into won't work! i.e. ssh bob@server # ssh into server as bob sudo su "monitor" - screen (fails) I have a script that ...
24
votes
5answers
1k views

What are the actual benefits of assigning sudo privileges to a user instead of using root?

I am fairly new to server administration, and I have seen a lot of sites recommending to assign sudo privileges to a user created by the root user and giving the root user an insanely long password ...
8
votes
4answers
4k views

Ubuntu : borked my sudoers file, how can I fix it?

I was editing my /etc/sudoers file and saved it but it has a syntax error in there. Now I can't 'sudo vim /etc/sudoers' because sudo thinks the sudoers file is not valid. How can I fix this?
0
votes
0answers
35 views

Sudo error: effective uid is not 0, is sudo installed setuid root? (sudo executable is already root/root 4755)

Running /usr/bin/env sudo /etc/init.d/httpd restart on a godaddy vps works fine from the shell. The same command executed remotely via capistrano generates the following error: sudo: effective uid is ...
3
votes
1answer
40 views

Cron job as root need to sudo to another user [duplicate]

RHEL6 In root's crontab a have: * 21 * * * /root/script.sh In script.sh there is a line: /usr/bin/sudo -u jira bash -c 'cd /opt/jira/bin; ./stop-jira.sh' && echo "Jira Shut Down" >> ...
0
votes
0answers
30 views

Slow sudo response

We have LDAP setup to provide information regarding sudo. The whole system works, but it takes a long time (~10 seconds) for any sudo command to return. For instance if I run strace -f -r -o ...
0
votes
1answer
53 views

sudo and --ask-sudo-pass on CentOS 6.6

I'm running command: [kamil@server.com ]# ansible example.com -a "sudo id" --ask-sudo-pass sudo password: example.com | FAILED >> { "failed": true, "msg": "[sudo] password for kamil: ...
0
votes
1answer
19 views

FreeTDS - sudo uses different protocol version

After a while of fiddling with FreeTDS I got my connection to MSSQL from Sphinx up and running as DSN-less connection. After running indexer index Everything works as expected. But, after ...
0
votes
0answers
25 views

Using placeholders or environment variables in sudoers

Is it possible to use in sudoers rules any kind of placeholders (not just wildcards) or environment variables? What I would like to do is to verify that user (the one sudoing a command) passes as an ...
34
votes
8answers
8k views

How can I run arbitrarily complex command using sudo over ssh?

I have a system that I can only log in to under my username (myuser), but I need to run commands as other user (scriptuser). So far, I have come up with the following to run the commands I need: ssh ...
1
vote
1answer
99 views

Running Ansible task as a specific user

I am trying to run a specific Ansible task as a different user than the one who is running the playbook. My .yml file looks like this: --- - hosts: staging_servers tasks: - name: check ...
0
votes
1answer
52 views

sudo: unable to execute … bad address - what is it and how to fix it?

I have a set of scripts which finishes up client machine deployment after executing a fairly generic NetRestore image. The main script runs under root privileges, and then calls another, "user" ...
0
votes
1answer
35 views

Can't change folder ownership via SSH

For some reason, I have a folder that I cannot read nor change its ownership. If I do a ls command, this is what I get: drwxrwxrwx 4 myusername myusername 4096 Jan 26 20:35 media1 <--- OK ...
2
votes
5answers
2k views

user GPG key not able to be used by SUDO

I created a script that runs duplicity to backup files I have on a VPS,and uses a GPG key that I generated as a user. When I try and run this script as SUDO I get: GPGError: GPG Failed, see log ...
1
vote
4answers
2k views

Editing with Winscp

I would like to edit files in my /etc from winscp. I have administrator privileges on this computer, How can i edit files and save them from Winscp in folders that require sudo be written before any ...
5
votes
2answers
442 views

Is there a way to allow command in sudo based on the current working directory?

I want sudo to allow me to run a command when my current working directory is, for example, /tmp. Example usage is removing files from /tmp directory, so I am in /tmp ($PWD of shell == /tmp), then I ...
10
votes
6answers
8k views

How can I execute a bash function with sudo?

I have a bash function defined in a global bashrc, which requires root privileges to work. How can I run it with sudo, e.g. sudo myfunction. By default it gives an error: sudo: myfunction: command ...
0
votes
0answers
22 views

Can I use serverspec on a remote system without requiring root or sudo access on that system?

Main thing I am trying to do is to run the tests from an unprivileged user (a gui runs these tests) without giving away the keys to the castle if this user gets compromised. Most of the tests ...
-1
votes
2answers
493 views

How to set “sudoers” in nsswitch.conf on Solaris-11

I am doing this on Solaris 11. When i open '/etc/nsswitch.conf' i see this - ... sudoers: files ... I would like to change this to - ... sudoers: files ldap ... I tried editing the file ...
1
vote
1answer
72 views

Ansible SSH as one user and Sudo as another

I am having trouble with configuring Ansible and sudo to allow me to SSH into a server and run a command as another user. I have gone through the questions / answers below and the Ansible ...
1
vote
1answer
26 views

Starting lighttpd from nagios renders lighttpd broken

I'm using Debian 7.8 (wheezy), and lighttpd 1.4.31 with nagios 3.4.1. when I start lighttpd normally (as root), everything works as expected: /etc/init.d/lighttpd start However, when nagios starts ...
0
votes
0answers
28 views

Slow sudo and ssmtp (hosts file wrong?)

I'm running an Ubuntu Server 12.04.5 LTS and when I type sudo su it takes 30+ seconds to open the shell. Searching on internet, this problem seems related to the file /etc/hosts and /etc/hostname. ...
3
votes
2answers
5k views

How to change back /etc/sudoers file right to 0440?

I changed /etc/sudoers file rights to 0740, because I wanted to edit it as root. I could edit it. What is happening now is that I can't change it back to 0440. I can't sudo anymore. I always get this ...
2
votes
3answers
3k views

“unable to resolve host error” whenever running a command with SUDO on ubuntu webserver

I have a server on amazon which normally runs like a champ; after increasing the instance size this weekend, then decreasing it back down to its normal size, I've started to get odd errors every time ...
3
votes
2answers
233 views

Ansible Fails to Authenticate Sudo Even When Sudo Pass is Given

Problem Using the latest, stable Ansible build, I have an odd problem where my playbook hangs on one server during "Gathering_Facts" but works fine on other similar servers when using Sudo. On the ...
0
votes
1answer
59 views

sudo : wildcard in user/group name

I try to find a solution about a sudo problem. I need to push different sudoers files on different servers, depending on the users present on the servers. But I would like to know if I can avoid that ...
2
votes
0answers
49 views

For sudo su - to retain SUDO_* environment variables?

We have a number of script (for Openstack operations) which require privileged execution in our environment. For some of the scripts we'd like to refer back to the USERNAME or UID of the person who ...
1
vote
2answers
68 views

Linux: How to allow a regular user to “su - anotherUser”?

I wrote a Nagios check script which checks if user peeradmin is able to touch a file in some mount on the server. Nagios user is: nagios . I've edited /etc/sudoers and added these lines but none ...
23
votes
3answers
53k views

How can I allow one user to su to another without allowing root access?

I'd like to allow certain users to su to another user account without having to know that account's password, but not allow access to any other user account (i.e. root). For instance, I'd like to ...
1
vote
3answers
1k views

Using a non-root to deploy a git repo to the web root

What is the best way to set up users and permissions for a production web server that uses git to deploy to the server? Background Running Ubuntu 12.04, I have apache serving files under /var/www as ...
3
votes
1answer
57 views

SE Linux - can't change SELinux booleans with sudo

I think this is the correct place to put this, rather than in StackOverflow Either way, we have a CentOS 6.6 server. SElinux isn't allowing us to enable httpd_can_sendmail I've tried this.... sudo ...
1
vote
3answers
681 views

sudo sourcing user's .bashrc without impacting /root/.bashrc or /etc/bashrc

Is there any way to make sudo use the user's .bashrc file instead of the root one? I would like to use my own .bashrc while using sudo instead of the one of root or /etc/bashrc (I would have to force ...
0
votes
1answer
53 views

Sudo-io log output shows garbled text

We have set up in our servers sudoers config the following configuration in order to log the console output for auditoring purposes Defaults:%administrators log_output Defaults logfile=/var/log/sudo ...
0
votes
1answer
347 views

Cant remove linux ln hard links

I am using CentOS 6.3 and am logged in a root. When I create a hard link by doing this: ln /root.hdd /somedir/root.hdd That works fine, the inode shows the same between the two files and ...
-1
votes
1answer
48 views

How to deny a specific user to reboot or shut down with sudo [duplicate]

Hello and thanks for helping me in this question. I just have in /ets/sudoers something like this: # User Aliases User_Alias CLIENT = jhonny CLIENT myserver = ALL. !ADMIN_CMD,!SU I just want deny ...
20
votes
14answers
24k views

Why does sudo command take long to execute?

I've been picking up Linux (Fedora 10, then 11) over the past few months (and enjoying it immensely-- it's like discovering computers all over again, so many things to learn). I've added my user to ...
2
votes
3answers
8k views

nagios nrpe unable to read output

I'm trying to use check_nrpe to check on a remote server, but it's not working and I can't figure out what am I missing... # /usr/lib/nagios/plugins/check_nrpe -H XXX -c check_load -a 6,5,4 8,7,6 ...
0
votes
1answer
61 views

Monitor root commands issued by users

I tried to log the commands issued by the system administrators in our organization and its output using sudo plus the log_output directive as follows on the visudo file Defaults env_reset ...
43
votes
8answers
4k views

Is it OK to set up passwordless `sudo` on a cloud server?

Sorry if the question is vague but I don't know a better way to ask and I didn't see the caveats/tradeoffs of the approach discussed here. I love the idea of accessing servers via keys, so that I ...
0
votes
1answer
130 views

ubuntu sudoers file hacked?

I've 3 ubuntu 14.04 vm on a remote hosting for code repository and testing purpose. I've got them for more than 1 year now. Two of them are working properly, but on one of them I can't run root ...
0
votes
3answers
123 views

How to grant user modify only specific protected file by sudo

I need to grant user modify some files by sudo that have only read-only access. For example, I want to grant user 'hosteditor' modify '/etc/hosts' file. I added to sudoers follow line: hosteditor ...
1
vote
0answers
99 views

What is a safe alternative to wildcards in /etc/sudoers?

In the /etc/sudoers file on my Red Hat server, I have this line: %webdevgroup ALL=NOPASSWD: /bin/chmod * /home/http/* This is clearly a bad idea, since someone could do something like this: sudo ...
0
votes
2answers
70 views

Execute bash script as root from normal user

I am trying to execute a bash script as root from a normal user. The story behind is that I need the www-data user to be able to kill a specific process. To avoid having apache being able to go mayhem ...
2
votes
5answers
11k views

ssh to multiple hosts and sudo multiple commands

I need to loop through and ssh to multiple hosts and run a series of commands on each. something like: for i in $(jot -w '%02.0f' 14 1) >do ssh user@host$i sudo -i "command1; command2; command3" ...
22
votes
6answers
10k views

Log all commands run by admins on production servers

It is company policy for admins to login to the servers via a personal username, and then run sudo -i to become root. Upon running sudo -i, sudo will create an environmental variable called ...
2
votes
1answer
60 views

Regular and repetitive sudo alerts from several Linux hosts

I've got several hosts running CentOS 5.11 on the LAN. Lately we've been getting fairly regular sudo alerts (via email) from attempted sudo commands by non-authorized users. Been Googling in case the ...
3
votes
2answers
1k views

Why doesn't sudo know where psql is?

The problem The CKAN installation documentation shows you how to list the installed PostgreSQL databases. The command looks like this: sudo -u postgres psql -l When I try that in my shell, I get ...