I have a ubuntu server 8.10 running on my dedicated server. How do I allocate IPs for users ? I have 3 IPs and 3 users running, I want each user to use a Single unique IP for all inbound and outbound traffic Also disallow a user from using the IP other then the one allocated to him. I tried to work out a solution using Iptables, but it does not work I suppose
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I recently ran into the following problem when trying to ssh into my Ubuntu 11.04 server:
>> ssh user@site.com
PTY allocation request failed on channel 0
I don't know for sure, but I think this happened after one of the latest Ubuntu updates I installed. In case it's of relevance, I'm remoting in from Terminal (Mac OS X 10.7 - Lion). Edit: The problem seems to be with Lion..
[Code]...
I'm running Fedora 11 (2.6.30.10-105.2.4.fc11.i686.PAE) 8 GB memory on a AMD Phenom(tm) II X4 965 Processor, 4 core server I just built.The problem I have run into is any virtual machine that has >1024 MB memory assigned to it will not boot. As along as it has 1024 MB or less it boots fine.The symptom you see is a very quick message "Booting from hard disk" the screen then goes blank, you can't login through SSH, and can't ping the network address so I know it's not some crazy video problem hiding the boot process.The attachment are messages from a failed boot attempt.
View 4 Replies View RelatedIf I want to add Windows & Mac users as Samba users, must I first add them all as Ubuntu users? If so, since none of the other users will actually be working on the Ubuntu Server, how do I disable the other non-admin users on the Ubuntu Server login screen. I am using Webmin to administer some server settings, and command line for others.
View 3 Replies View RelatedI wonder if other people have this problem. sometimes I need to duplicate most or all of a server from one machine to another. part where I most tend to have issues is with recreating the users. Sometimes the UIDs don't match up because of differences between the two systems, which gives funky results, like files owned by the wrong user.
Or, sometimes, I just need to create the same 10 users on x number of machines, and it's tedious to do this 10x times. Plus, then, if you need to change a password or delete a user, you have to do it x times.Any recommendations on how to centralize users/auth?
I have created my own server with php, mysql and pma. I want to creat users and disable ssh so they can only user their username and password to get access to /home/<username> with a ftp program.
View 1 Replies View RelatedMy problem is quite simple, when I set up squirrelmail I only had one user on the server, and now that I have created new users, I can not log in to their accounts via squirrelmail I am using Maildir System is 10.04 server, running postfix and dovecot. I origionaly set up 'remote' as a user, I can send and recive mail on that account and log into squirrelmail
any new accounts can send email to remote(via outlook/thunderbird), to be seen in Squirrelmail, but get an invalid username/password when I try to log into squirrelmail in short, new accounts can not log into squirrelmail
I've installed XEN according to this tutorial: [URL] on the first XEN boot, it freezes for a very long time on:
allocating pci resources starting at a8000000 (gap: a0000000:5ec00000)
I need to setup a simple server to make available Quickbooks accounting data to just a few stations. Can this be done with Ubuntu desktop version? Would it be recommended due to the small number of users? Or should I use a server platform?I have never used Linux before but have used command line interfaces and am looking forward to it. I installed Ubuntu Server 9.10 32 bit and have even gone as far as logging in. Amazing I know. I installed it on a separate disk so I can switch between Windows and Linux startup disks at boot via cmos.as a first step into linux would like to be able to browse the web from Ubuntu Server 9.10 if the Server edition is in fact the route I should be taking.I would also like a good source to learn not only command line commands but also all the stuff that I see after the commands, you know, all the stuff with - signs all over the place.
View 9 Replies View RelatedI'm using vsftpd on my server. When I connect (using file-zilla) from other computers on the same network I can't download any files. I can upload, create directories, and delete stuff, but I can't download. I've disabled anonymous access and enabled local user log-in. My /etc/vsftpd.conf
Code:
# Example config file /etc/vsftpd.conf
#
# The default compiled in settings are fairly paranoid. This sample file
# loosens things up a bit, to make the ftp daemon more usable.
# Please see vsftpd.conf.5 for all compiled in defaults.
[Code]...
I have two ubuntu 10.04 64-bit servers running samba (3.4.7) and openLDAP (2.4.21). The LDAP directory is successfully replicating between the two servers. These servers also serve as LDAP servers for sudo, pam, nss, and other services for a dozen servers without issues. The BDC samba is configured to use itself for LDAP. I connected to the BDC using the samba ldap credentials and verified I could a) see the Computer object b) read NTPassword and LMPassword. The workstations can authenticate to the domain successfully against the PDC. If a workstation boots and connects to the BDC, they login fails with:
Code:
[2010/07/18 11:46:23, 0] rpc_server/srv_netlog_nt.c:336(get_md4pw)
get_md4pw: Workstation MACHINENAME$: no account in domain
[2010/07/18 11:46:23, 0] rpc_server/srv_netlog_nt.c:584(_netr_ServerAuthenticate3)
_netr_ServerAuthenticate3: failed to get machine password for account MACHINENAME$: NT_STATUS_ACCESS_DENIED
Successful authentication against the PDC shows:
Code:
[2010/07/18 11:59:20, 1] smbd/service.c:1063(make_connection_snum)
MACHINENAME (192.168.2.145) connect to service netlogon initially as user username (uid=30000, gid=512) (pid 1727)
[2010/07/18 11:59:20, 1] smbd/service.c:1063(make_connection_snum)
MACHINENAME (192.168.2.145) connect to service data initially as user nobody (uid=65534, gid=65534) (pid 1727) .....
I have apache installed on my server. Is there a way to view how many users are on my site?
View 3 Replies View Relatedinstalled Ubuntu Server Edition and I've found that my first user has a bash history and I can turn on a coloured prompt by editing my .bashrc etc but new users don't have that!I did : useradd -d /home/newb -m newbpasswd newband the correct looking .bashrc file appears to be in /home/newb but it is being ignore by bash when logged in as newb. Instead I am presented with just a dollar prompt instead of "newb@server"how can I sort out my users with proper prompts?
View 1 Replies View RelatedI am moving a webserver from a Gutsy to Lucid server. The webserver works fine, but I am having a problem with the users. I moved the home directories, along with passwd, group, shadow, and gshadow. The users can login fine, and their home directories are fine. The problem is when they try to logout, they get
$logout
-sh: logout: not found
GUI for several thousand simultaneous users. I know this post may at first seem a little out of place here when you begin to read it but please bear with me and I think you will understand why I am seeking feedback here. The company I work for (whose name I am withholding for now) is currently running a little over 5,000 Linux servers. Each of these servers has a minimum of 500 users, some as many as 3,000 users on them during a business day.
These servers are serious pieces of hardware. They have hot swappable raid arrays, redundant well most everything is redundant on them, frankly. Our conversion to Linux took place about 8 years ago. We have a proprietary database and development environment that was originally built in the 1970s. All but the most recent applications run in this proprietary environment, whereas our newer applications are using PostgreSQL and executables that are delivered using Apache web server and run inside each users Windows Explorer session on their local PC.
Really, our situation is rather typical of any organization that has legacy software that still gets the job done - with the possible exception of the **massive** number of total users we keep up-and-running every day. more, our next Linux servers are expected to support somewhere between 6,000-8,000 users [exact figure yet to be determined]. You may ask this is all very interesting but why are you posting this here?.
I am researching alternate ways of presenting attractive and functional GUI to users of Linux servers. I find the Ubuntu GUI to be attractive and very functional. the user input these forums get. Finally I am looking for points of view outside my own organization so I don't fall into the 'but we don't do it that way here' mental trap and miss a really great concept.
I have an idea about how to solve this growing challenge, and I want to present it here for your review and comments. For those who might think I have never worked on systems of this size; I can't imagine my opinion would be valuable remember this: The Ark was built by a passionate volunteer; The Titanic was built by paid professionals.....
How do I migrate my user list to a new server installation? I thought that just copying /etc/passwd and /etc/shadow would be enough. I recently tried upgrading a lightweight bazaar server to 11.04, and the upgrade crashed. I had to perform a new installation of Ubuntu to recover operation of the system. I installed on a different hard drive. I had a dozen other people with user logins, so that they can get or modify bazaar repositories.
The new installation is running, and I can read all of the files on my old system's / drive. I tried copying the /etc/passwd and /etc/shadow files onto my new /etc -- but that did not seem to work. (When I looked using the System->Administration->Users-and-Groups GUI tool, there were no users visible, so I restored the old files.) What I intended to do was to clone the /etc and /home trees over to the new system. What am I missing?
Not sure if this is the right place fo this but....I'm just learning to write bash scripts. I'm experimenting on a ubuntu server 11.04 virtual machine.As part of the script I want to automate user creation.Is there a way to check if a user already exists in a script. so i can do something like
Code:
if userexists; then
do this
else
do this instead
fi
i was using vista in my laptop, recently installed ubuntu in another drive partition which is 69 GB. but during ubuntu installation i gave only 16GB to ubuntu from this drive. i guess the remaining 69 GB - 16 GB = 53 GB is unused space now.. now how can i allocate all 69GB in that drive to ubuntu ?
View 5 Replies View RelatedI have been assigned a school project on detecting memory leaks in linux processes. I am reading.. but have found it hard and inefficient to go through the very vast documentation not knowing what to really look for. Could you please give me some guidelines on this subject?
View 4 Replies View RelatedI'm maintaining a c++ application running on a 64-bit RHEL5 server w/32GB ram, but compiled to be a 32-bit executable with g++. The application handles large amounts of data, and has lately been throwing a st9bad_alloc exception. "top" shows the application as dieing right around when VIRT=~3GB, SWAP=~1.5GB and RES=~1.5GB. In the core dump I can see that it's consistently failing to push_back() a piece of data onto a std::vector (which already has hundreds of thousands of objects in it).
I know 4GB is the maximum address space for 32-bit applications. I've learned from this lwn article that a 32-bit kernel reserves 1GB of address space, leaving 3GB for user space. However I'm not running a 32-bit kernel, so that really doesn't answer anything.I wrote a dummy app which called malloc() over and over in a for loop, and it is able to allocate right up to the 4GB before it fails. I don't understand why this one seems to be able to allocate more.
The only difference between the two apps (besides malloc vs std::vector:ush_back), is that the 3GB crashing application attaches to 512mb of shared memory.Anyone have any ideas why this application would be crashing at 3GB? Is there any more diagnostics I should be doing? I would ultimately like to port this to 64-bit for a number of reasons, but it is a big undertaking for my organization, and I'd like to better understand what's going on here.
How do we allocate memory of struct? what i did was
Code:
int main()
struct amp
{
[code].....
cout <<"The size of 'struct' is"<< sizeof(struct amp)<<"and it is located at"<<struct amp*s = malloc(sizeof(struct amp))<<endl;
it gives me an error---
In funtion 'int main()':
error: expected primary-expression before 'struct'
error: expected ';' before 'struct'
I'm looking for a command that will give me a list of users (unique, dont name my user account 60 times) that are running processes on a system.
View 5 Replies View RelatedI have a server setup with all my web development stuff in /var/www and in several sub-folders within that. (each project having it's own folder)It works great with one FTP account. But recently I've been getting help on a projects from a buddy of mine that freelances, and have made him an FTP user account as well. All is fine, except for when he tries to edit a file and gets a permissions error.
Here's the issue, I don't want us to have the same FTP login, but all the files are currently owned by my user name. So, when he logs in to edit a file, he can't because I'm the owner, and the files are set to 744. Will I cause any harm by adding both users to the same group (www-data) and chmod'ing the files to 775 so that we can both access and modify the files?
I'm currently running a small server using 9.10 and I wondered if using groups was a possible route in order to keep users away from the bulk of the file system and keep them in locked their home directories.
What I planned to do is use a group named 'allowsystemfiles' to be added to admin accounts, then to set parts of the file system to that group, along with the permissions 0760 to keep non-admin users out.
Is is a good idea or will this hose my system?
Quick question - I would like to know how to prevent users from accessing directories above the directory used for ftp. I'm running proftpd and I'm able to connect outside of my LAN, however all user accounts can click "Up to higher level directoy" and access everything, all the way up to the root directory. How can I make this unaccessable/not visible to users connecting to my server, allowing access only to the directories and subdirectories I have specified?
View 2 Replies View RelatedI have server 9.04 and joined thru winbind to Windows Domain and subversion installed.Windows AD users can use their own credentials to join and everything is working fine.However the group svn which is used to access the repos in /etc/groups has some users.However I would like to add the domain users group to the svn group but the domain users contains Space. And /etc/groups does not happend to read the space any ideas on how to add "domain users" to the svn group in /etc/groups
View 1 Replies View RelatedI've got a Samba server (CentOS)(I swear all my non-work boxes are Ubuntu) that has been working fine in our Active Directory environment for a long time, now that Windows 7 has been forced upon us, we've noticed that Win 7 users aren't able to authenticate to this server unless they access it using the IP address, e.g. \192.168.1.22. We've tried the different Windows 7 registry hacks and nothing makes a difference. We were advised to update Samba and we did to 3.3.8. However, this being a virtual machine, upgrading a clone of this machine did work, the configuration was identical, except the hostname
View 9 Replies View Relatedhow can i increase my user's home folder size to 3Gb or more? of-course with using webmin
View 5 Replies View RelatedI have a server 192.168.1.14 (I will call it 14) it runs Ubuntu server 10.04 and I have my Ubuntu Laptop 192.168.1.3 ( I will call it 3) that runs Ubuntu 10.10. I need to find a way to add users from my Laptop (user X) or a Windows machine user (Y). What I am trying to accomplish is to have file permissions some for Y only and some for X only and some for a group that contains X and Y. Now I have a Dir, on the server 14, with the owner Z (server user) and I gave it permission 760. Now my user X, from Laptop 3, (they have the same name in real life) is not able to access those files on a NFS share.
I would like to have the 760 perm and be able to access those files without doing a 777. I am thinking to add all users (XYZ)to a group and give read permissions for the group. My dilemma comes when the users are on different machines. I already created equal users on server with the same name but it does not do the trick. When connecting to server from 3 I can't access files that are owner by the group where user Z belongs (even if user X has the same name and password). I am thinking there has to be a deeper way of identifying users.
running squirrelmail, postfix and dovecot, I filter out mails which are spam into a spambox and non-spam into the inbox but by default, the user is not subscribed to the spambox and therefore, the spambox is not visible to the user, how can I make it such that each time a user is created he or she is automatically subscribed to the spambox?
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