This is the code I'm using for chef to create a group tomcat in a vm and then a user tomcat but i would like for tomcat to be an unprivileged user and not have a home directory.
I see it has a home directory when i run the command "cat /etc/passwd"
execute "groupadd tomcat" do
end
execute "sudo useradd tomcat -g tomcat -m -s /bin/bash" do
end
Is there something i need to add or take away from this?
Related
As a web developer I always have the problem when updating PHP (and other) files from an SSH client, because I am logged in as a user or simply root.
After that update I always have to run manually from a terminal 'chown -R apache:apache *' to make the files accessible.
I tried to make a user ID and add it to the group 'apache' and add the apache user to the group of my user id. That works only for existing files on the server file system, because newly created files have permissions rwxr--r-- which does not allow writing by my user even as it is in the 'apache' group.
I'd like to make a login (shell is not needed) for the Apache user, so I can use an SSH based file browser like Forklift to login as Apache or use sshfs to mount as Apache user.
Another way is make umask that my user id always sets attributes of newly created files from sshfs mount or a file browser (mounted with my user id, not root) that they have permission rwxrwxr-- (i.e. 0775) by default.
Is there a way I can upload files to the server (updating existing op create new ones) without having to worry about permissions by Apache ?
You have to set the setgid
For example, do the following steps:
adduser hugo
addgroup apache
usermod -a -G apache hugo
mkdir /tmp/example
chown hugo:apache /tmp/example
chmod g+s /tmp/example
su hugo
cd /tmp/example
touch my_file
ls -l
I have been making some custom shell scripts for my nagios machine. I was able to make them run just fine but for some reason some commands in the script don't seem to be working.
For instance commands like echo, cut , ps , grep work fine but commands like touch, useradd dont seem to work, even with sudo. If I run the script from the terminal, all the commands in the script work.
How can I give nagios permissions to run these commands?
I'm running nagios3 on ubuntu 14.04.5 lts
Edit: Added a few lines of code which aren't being run
sudo useradd -m $USERNAME
(echo $PASSWORD; echo $PASSWORD) | sudo smbpasswd -s -a $USERNAME
Standard way is setup permission for Nagios user on monitored server, for instance NRPE, in /etc/sudoers file.
1. method
Try add something like this in your sudoers file.
Defaults:nrpe !requiretty
nrpe ALL= NOPASSWD: useradd -m
nrpe ALL= NOPASSWD: smbpasswd -s -a
PS: For easy editing sudoers file you can use visudo command ;-)
2. method
Or you can try add Nagios user to sudo group via sudo usermod -aG sudo <username>
-a stands for add
G is for group
Tell nagios to run the script as sudo in your .cfg file...
Assuming its permissions problem.
Edit /etc/sudoers file using visudo, this allows automatic file check for errors.
Defaults:nrpe !requiretty
nrpe ALL=(root) NOPASSWD: /path/to/your/command/or/script
Verify sudo has assigned the above permissions to the user in this case nrpe
sudo -U nrpe -l
you should see the command you added listed within the outpul
Edit /etc/nagios/nrpe.cfg
Add your command to the end of the file
e.g.
command[your_command]=/usr/bin/sudo /path/to/your/command/or/script
Restart nrpe
Centos: systemctl restart nrpe (use the command available based on your Operating system)
I'm creating a virtual machine configuration script using whiptail that I'd like to have automatically start after the user logs in. The thing is, that I don't want the user to be root, however because the user will need to be able to change things like hostname, ip address, add directories, etc. they'll need sudo privileges in order for the script to actually do it's job.
What I've done so far is created a user that uses my whiptail shell script:
adduser -M -s /scripts/whiptail_config.sh user1
I've also added user1 to sudoers using visudo:
user1 ALL=(root) NOPASSWD: /scripts/whiptail3_config.sh
And I've changed /etc/init/tty1.conf to automatically log that user in:
exec /sbin/getty -8 38400 tty1 -a user1
Up to this point, my whiptail_config.sh shell script loads fine after bootup and the forced login. However, anything that actually requires the sudo access within the script errors out with the Permission denied... message.
Is what I'm looking to do possible? Are there alternatives that I haven't considered and should? Thanks!
If /scripts/whiptail3_config.sh doesn't do a sudo, then it won't have permissions. You can make the script check the uid under which it's running and sudo to itself.
Something like
#!/bin/bash
[ $UID != 0 ] && exec sudo $0 "$#"
# the rest of the script...
Where do you use sudo? Nowhere.
Run the script directly from inittab.
Using 'Execute shell script on remote host using ssh' option and need sudo rights on remote server to change permissions and remove protected files.
How to run session with this rights?
Getting message
sudo: sorry, you must have a tty to run sudo
when trying to run sudo command.
To run sudo remotely you have 2 options
Allow the user to run sudo commands without a password.
Append username ALL=(ALL) NOPASSWD: ALL the /etc/sudoers file with sudo visudo. Alternatively you can modify this line to only allow certain sudo commands to be run without a password
Use the pseudo-tty to emulate tty remotely and enter your sudo password when requsted.
To do this run ssh -t username#host command_to_execute
If the remote server accepts the direct login of the root user you can simply do:
ssh -l root yourserver command_to_execute
Similar syntax is:
ssh root#yourserver command_to_execute
Mind that allowing the login of the root user via ssh to a remote server isn't always a good solution.
A better solution would be change the owner / permissions to allow a non-root user to modify the protected files.
I want to know if i can somehow or someway run a remote linux script stored in windows machine through putty which can contain:
#!/bin/bash
su
<password>
<some operation which needs root permissions>
exit
<some operation with normal user credentials>
Since i tried above script but it does ask root password and then give error of not able to run commands and needed root access. I ran this script from putty using command line:
putty -ssh normaluser#linuxhost -pw <password> -t -m C:\myRootScript.sh
Thanks for answers
Ashutosh
Either login as the root user (not recommended!) or add the user that you're login in with to the sudoers file
sudo visudo
myusername ALL=(ALL) NOPASSWD: ALL
That will let you run sudo without a password.