Ubuntu Servers :: RAID5 Setup To Serve 10 Client Machines?

May 22, 2011

I am trying to build a file server with RAID 5 over a couple of 1TB HDDs, to serve about 10 client machines using Ubuntu Server. I already own a 22-port switch: HP ProCurve v1810G-24 Switch (J9450A), which I am assuming will do the job. And for the actual server I am thinking of buying: HP ProLiant DL120 1U. Will this hardware suffice, or am I missing something important to get the whole thing running?

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Software :: FreeIPA Setup To Ssh To Client Machines

Jun 14, 2011

I'm trying to ssh to a client machine which as freeipa client setup Login works great but ssh via GSS.Is there a way to see what's being sent where? I already have the highest debug turned on the ssh side.

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Ubuntu Servers :: Random Freezing On NIS/NFS Client Machines?

Aug 25, 2011

We administer a small lab of Ubuntu 11.04 machines. Users authenticate via NIS to the fileserver, which then uses NFS to mount their /home directory.

From time to time, seemingly at random, the machines will lock up. After about 15 minutes, they will go back to normal.

Switching the machine to the console with/ Ctrl+Alt+F1 doesn't help either - credentials get entered, but there's still a 15 minute wait before any commands can be entered. Some error messages show up at this point about processes that were running timing out. However, the root user can log in immediately (which makes us think that this is only affecting NIS accounts).

Logging in with the root account, we can ping our NIS server, and it responds normally. We can restart the networking and NIS daemons but neither of these help.

We checked the NIS error log in /var/yp/ypserv.log and it is empty.

We used to be running a different version of Ubuntu on the client machines (10.04 LTS), but not on the server.

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Fedora Servers :: Can't Login Remotely To Client Machines?

Jun 14, 2009

I am running NFS and NIS servers in my FC8. Clients are also running FC8. Everything was working fine. I could login remotely to server as well as clients. Suddenly (few days ago) a problem started. I can not login remotely to client machines. I did not do anything. I can login to server remotely, but not the client. When I try to login, it accept password and nothing happens. Also, when I try to login from server to client same thing happens. We share the home directory of the server with client. Another question: there two type of nfs server nfs-user-server and nfs-kernel-server. I just use gui to set up the NFS. I don't know which one I am running. Is there any way to find out which nfs I am running?

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SUSE / Novell :: Running Out Of Space Creating Virtual Machines OES2 Sp1 On 10 SP2 Xen Host Serve?

Mar 17, 2009

I have a quad cpu with 8gb ram running SUSE 10 sp2 on a raid 5 XEN host server. I have created a 250 gb partition GWMAIL in the extended partition to be the disk space for the first virtual machine OES sp1 with groupwise 8.0. I have downloaded the OS .iso's to the desktop of the host server to use for installation. When I begin to install, it hangs for 5 to 10 minutes then gives me an out of space error.

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General :: Setup Virtual Machines To Be Servers With Bind Option Set To A Multicast Group Address Of

Mar 28, 2010

I am in verse to test "Multicast Packet filtering".I want to setup Virtual Machines to be servers with bind option set to a multicast group address of I want to configure the client VM, connecting to the multicast group address and setting the TTL as needed.

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Ubuntu :: Setup Apache To Serve Only The Computers In The LAN?

Jun 10, 2010

I use to keep a running instance of Apache in order to test my sites locally. I'm usually not that fussy about security, assuming my 80 and 8080 ports are closed (and, well, also the other ones).Anyway this evening I was just logging into PHPMyAdmin when I found the default username was a string of garbled characters. When I entered PHPMyAdmin, I was greeted with the message

Code: Additional features have been disabled in order to work with linked tables. To find out why click here.So I clicked and it seems that the error comes from the table

which has been disabled. Everything else SEEMS ok at first sight.So now I have got a few questions.

1) I checked via canyouseeme.org and the default ports are still closed. This mean it should be impossible to even try to do something on my Apache remotely, right?

2) How do I reenable the additional features?

3) How do I check if someone else logged in?

4) What about the garbled name at the login? This should be just a Firefox thing, or actually PHPMyAdmin does suggest the name of the latest login?

5) How do I set up Apache to serve only the computers in the LAN? At worst, even only the local computer would be good.

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Ubuntu Servers :: How To Setup Thin Client In Edubuntu 10.04

Oct 8, 2010

is there anyone knows how to setup and configure thin client in edubuntu 10.04?. From the beginning installation until thin client work.we have 2 set of computers. 1 computer installed edubuntu 10.04 and installed LTSP (Linux Terminal Server Project) in the OS without NIC Card. And the other computers has only NIC card.. We setup it in the bios as a "First Boot" Network Card. We connect 2 computers using "pair-to-pair connection". There and after, we restart the 2 computers. "Nothings Happened".

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Ubuntu Servers :: Fair Pricing To Setup 11.04 For A Client?

May 31, 2011

I've had someone approach me recently about setting up an Ubuntu server for his small business. Having never done this for a paying client before, I have absolutely no idea where to begin as far as pricing goes. Here are some of the things I've been asked to put together:

Install and configure Ubuntu Server 11.04 with:
- Apache (LAMP)
- Samba
- Subversion
- Webmin

As well as configuring mdadm RAID and setting the system up for multi-user access. For an experienced Linux user like myself, I don't believe that it will take me very long to get things up and running, but again, I have no idea where to even begin as far as pricing goes. Keep in mind that this client is a small business owner of a game development company with only 5 employees. I am told that he only has a "modest" budget to work with. Additionally, it is possible that I will be hired in to this company shortly, to help with game development and to maintain this system which I am setting up. I would like to use this opportunity to make money, of course, but I also want to be reasonable with the client so that I may be hired in to his company in the coming months for a programming job.

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Ubuntu Servers :: Convert Mdadm 6 Disk Raid5 To 5 Disk Raid5?

Jun 30, 2011

I know you can fail and then remove a drive from a RAID5 array. This leaves the array in a degraded state.

How can you remove a drive and convert the array to just a regular, clean array?

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Ubuntu Servers :: Serial Ports On Client Side Ltsp Setup?

Dec 12, 2010

I have recently installed an ltsp system, client and server. Everything works except i cannot get my client side serial ports to work or register for that matter. Can anyone point me to the steps i should take to get these working.

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Ubuntu Servers :: Setup An Email Client In Order To Send/receive Emails?

Oct 2, 2010

I want to setup an email client in order to send/receive emails, but since i am experiencing some issues with my ISP, i decided to setup an SMTP server with Postfix on my machine.The problem is that i can receive emails but i can not send.I read almost every thread in here refering to Postfix, but i could not find the problem on my configuration.So here it is..

# See /usr/share/postfix/main.cf.dist for a commented, more complete version
# Debian specific: Specifying a file name will cause the first


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Ubuntu Servers :: Setup A Webmail Server / Suitable Client To Connect To It That Is Compatible With Windows?

Jun 29, 2010

I would like to know how to install a webmail server and a suitable client to help connect to it that is compatible with both windows and linux ubuntu.

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Ubuntu Servers :: Apache Won't Serve Images

Aug 15, 2010

I've just set up a Ubuntu 10.04 LAMP server and put a couple of websites on it.It Seems to be working fine except that it won't serve any images.It apparently served a 3787 byte response which was not received by netcat! Not even headers.It's not the usual-permission etc as there is no line in the error log about this request.

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Ubuntu Servers :: Dnsmasq Does Not Serve Up Remote Tftp Ip?

Oct 25, 2010

I have it working fine when tftp and dhcp are installed on the same server but when trying to forward to a remote tftp it does not work. Dnsmasq insist on giving its local ip.I have added to config:dhcp-boot=pxelinux.0,pxetest2, I tried with and without the original hcp-boot=/var/lib/tftpboot/pxelinux.0Not much on this topic on the google nor on the dnsmasq homepage.

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Fedora Servers :: Apache Will Not Serve Beyond Local Network

Jan 6, 2009

I've tried, but now I give up. I'm trying to run Apache on FC9. Nothing fancy, no extras, just the default installed apache. [correction, I have coldfusion installed, however the service is not running] I've set the Listen variable to every combination I could think of, with no success. I can set it whatever I like (such as my local IP) on any port other than port 80. If I try to set it to 192.168.x.x:80, it gives me the error message:
Starting httpd: (98)Address already in use: make_sock: could not bind to address 192.168.x.x:80

I've run netstat commands to try and find applications listening on port 80 and found nothing. Whenever I chose a port other than 80 to get the service to start successfully, I am able to serve pages locally. But even with my ports forwarded correctly, no one outside the local network can see it. I've checked with nmap that my machine is opening the ports and even cheated, disabling the firewall during testing to ensure it was not part of the problem.

I noticed while locally nmaping my server that whenever I set Listen 192.168.x.x:8081, 8081 is opened, as well as normal port 80. When I stop the httpd service, both those ports are simultaneously closed. Why is httpd opening port 80? I'm assuming this is related to why I cannot assign Listen to port 80. If I run remote scans from sites like www.nmap-online.com and www.canyouseeme.org, nmap-online will report filtered on ports 80 and 8081 if my httpd is running, and if httpd stopped, 80 is closed, filtered 8081.

Can you seem reports success on ports 80 and 8081 if httpd is running, fail if httpd is stopped. I'm sure thats all a lot of information cluttered in to all that. To summarize, I cannot start my httpd server on port 80, and I cannot ever see my webpages beyond my local network. Am I missing something extremely is simple and I'm just over looking it?

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Ubuntu Servers :: Filezilla Ftp - Serve Up The Files To A Home ( Non Internet ) Network?

Aug 22, 2010

I have been trying to get a home server to do what i want but just not getting there.I only need it to serve up the files to a home ( non internet ) network.I saw that filezilla also comes in a Linux version also. I am going to give it a try next. Anyone use the linux version of filezilla ? What happened did it work not work ?

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Ubuntu Servers :: Haproxy Or Barracuda For Load Balancing - Also Serve For The Database?

Sep 1, 2011

I am about to build a server cluster with mysql-cluster and a couple of apache webservers. I have found lots of tutorials regarding the setup of haproxy, but i have the option to get a pretty affordable barracuda load balancer. Now, i am kinda new at this. But my main questions are.. Can the load balancer also serve for the database? Is it a straightforward configuration?

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Ubuntu Servers :: Can Server Serve Music/pics/video To ITunes, TiVo, PS3

May 7, 2010

Does Ubuntu Server 10.04 give me a good/easy way to upload music, photos, and videos and automatically have them available to a TiVo, a PlayStation 3, and Macs/PCs running iTunes on the network?I'd additionally like it to be able to transcode the videos into formats that the PS3 can handle.

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Ubuntu Servers :: Disable Apache 2 Ngnix Server Will Serve Files In / Var / Www Automatically

Sep 6, 2010

So if I disable apache 2 my ngnix server will serve the files in /var/www automatically.

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Server :: Raid5 Online HDD Build Setup

Mar 10, 2010

For the troubleshooting of one server (having 73Gb 3HDD, Raid5 of 140Gb). When I check in the Array The Logical Vol Appears as One HDD not Online
0 HDD1
1 HDD2
2 HDD3
0 HDD not showing Online, When we set it for Oneline & save, After restarting it will go off.

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OpenSUSE :: Move Some Files Between Two Machines - Scp Client

Nov 11, 2010

I would like to move some files between two machines and as scp sometimes is not the easiest thing to do. Do you know if there is any gui that makes this remote copy files procedure easier?

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Ubuntu Networking :: Unable To See Samba Share From Client Machines?

Feb 15, 2010

I just set up an ubuntu 9.10 server (no desktop environment, command line only) and I'm unable to see my samba share. I followed these instructions. Here are the relevant parts of my smb.conf file: Quote:

workgroup = JASONGROUP
# I un-commented this
security = user


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Networking :: Sending Emails Using Outlook On Client Machines?

Jun 20, 2009

i have problem in sending emails using outlook on my client machines i.e XP i am getting the error Relay access denied. i am using fedora 9 as our server. with dovecot and postfix and fetchmail.it was working fine previously .

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Programming :: Encryption / Implementing AIDE On Client Machines?

Aug 22, 2010

I need to implement AIDE on my client machines. The builds on these machine are different, so each workstation will have its own specific db generated through running AIDE initially. It is not good practice to just leave the db on the machine, since an "attacker" would be able to view this information. However, at the same time I do not want to pull back over 100 different aide db's to the ftp server and have an update pull each specifically every time I need to run the check. The plan is to leave the db on the client machine, but encrypt it (using public/private keys). I need to be able to encrypt the file on the client machine. I will use a cron on the client to pull an update (from my ftp server) that runs AIDE. This update needs to be able to decrypt the file, use it running AIDE, then re-encrypt the file on the client.

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Ubuntu Servers :: VmWare Version That Mirrors Virtual Machines In Different Servers?

May 25, 2011

I am looking for a version of vmware that manages 2 severs at the same time and that mirrors them such that if one goes down we can still work on the second and of course it also works as a backup. Also, must work on a ubuntu server I have looked but there are so many version that I don't know which one is the best.

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Ubuntu Servers :: Create A Raid5 With The Three New 1.5TB HD's?

Apr 15, 2010

Here is what I have and what I want to do.

3 new 1.5TB HD. 1 used 1.5TB hd with 980MB of data. I want to set up a raid 5 with a hot spare. I have music, pictures, videos, and movies (About 2.8TB worth). I have had a mismatch of drives previously, 250GB, 2 320GB, 500GB, 2 1TB and now a 1.5TB all with data. I have removed the one 250 and 2 320s and put the data on the 1.5TB that is currently installed.

What I would like to do is create a raid5 with the three new 1.5TB HD's, copy the data over from the currently installed 1.5TB and then grow or add that drive as a hot spare. Or just add it and then add another 1.5TB down the road as a hot spare don't know for sure.

In addition since I have 2 1 TB drives, I could add 2 more (Good deals on 1 TB drives right now) and have a total of 4 1TB drives. Could I have 2 raid5's (4-1TB's and 4-1.5TB's)in two separate arrays? I really do not know if that makes sense or not but here comes LVM. I am tired of managing my HD space and since i have multiple folders (Movies, music, pictures, videos) and within the movies folder I have R, G & PG folders for the ratings of the movies. (Pwd protect the R so the kids can't get to it) So with LVM installed with the Raid5 I should be able to create my folders and just keep adding data and not worry about moving folders around when I grow the storage by adding new drives. Is that correct? Maybe someone could point me to a how to.

Also, if I create 2 arrays (And I need to know so I can order the 2 additional 1TB drives), then I could put all the music, G and PG content on the one array and all the R and spicy stuff on the other and password protect it.

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Server :: Samba Login/passwd Client - Why The Users Id Arent The Same On Every Machines?

Feb 8, 2010

I am encountering this issue:

Samba login/passwd client : why the users id arent the same on every machines?

So the client side config looks like this:


/etc/pam.d/ files :




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Ubuntu Servers :: Software Raid5 - Very Low Performance?

Mar 5, 2010

I recently installed a new home backup server with Ubuntu 9.10 x86_64 using the alternate CD. I used the CD's installer to partition my disk and created a software RAID 5 array on 4 disks with no spares. The root file system is located outside the raid array.

At first the array performed nicely but as it started to fill up, the io performance dropped significantly to the point where I get a transfer rate of 1-2MB/s when writing!


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Ubuntu Servers :: Mdadm Raid5 Keeps Degrading?

May 3, 2010

Created my own file server/nas, but get stuck in a problem after couple of months. I have a server with 4x 1,5tb disks, all connected to sata ports and 1 40gb ata133 disk running ubuntu 9.10 x64 amd. I've created a raid5 array using mdadm. It all worked great for couple of months but lately the raid5 array is degraded. disk sdd1 is faulting every few days. I have checked the drive but it is fine. If I re-add the disk and wait for 6 hours my raid5 array is all fine again, but after a few shutdowns, it is degraded.

my mdadm detail:


root@ubuntu: sudo mdadm --detail /dev/md0
Version : 00.90
Creation Time : Mon Dec 14 13:00:43 2009
Raid Level : raid5


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