Ubuntu Servers :: Embedded Software RAID Into Business Domain
Feb 23, 2011
I was looking at replacing an old Microsoft Small Business Server 2000 with an Ubuntu system. I was looking at the following Dell system:- [URL]. I was concerned about the "Embedded software Raid" and if Ubuntu will work with it? The system is fairly basic:-
We want a server with 2 x 500g SATA hard drives mirrored.
We need to connect 8 Windows computers logged into a business domain. Accessing mail and a Microsoft Access data base.
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Jul 26, 2010
I am certainly a Linux Newbie..I have a business with a network of PCs that need not get client files corrupted by viruses & other bad things from the internet...YET I would like to let my employees(who are way worse newbies than me..om Windows even...& stand good chance to mess up computers) use internet at times if they wish. My first thought was just separate side by side PCs, one to get on for Clients/business network etc, & the other to get trashed by the internet.
What I am thinking is a better alternative (& I need to know from yall who I'm sure are way beyond this newbie whether this thinking is correct) is to put something like Puppy Linux 5.0 on small memory USB flash drives & let them each have one to use for internet, simple application functions etc. Can I safely believe that running internet browsing on the flash drive with Puppy Linux booted & running as the OS is NOT going to potentially infect my windows XP business PCs with viruses etc?
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Dec 20, 2010
I have been using lspci, dmidecode, and mpt-status to get hardware information on my Dell 1950 running Ubuntu 8.10. I'm pretty sure my server is using an embedded SCSI RAID controller from info I got from Dell's site:
1CR679Assembly, Card, SAS6IR, Integrated, Sled
1TX846Assembly, Cable, Controller SAS, POWEREDGE EXPANDABLE RAID CONTROLLER
When I run lspci I see:
01:00.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1068E PCI-Express Fusion-MPT SAS (rev 08)
PCI-Express is an actual...well, PCI card, right? But dmidecode shows that I have two x8 PCI Express slots that are both available. Sooo...I'm missing something. How am I running a PCI Express SCSI controller without using a PCI Express slot? In the event of not having the kind of info that I did (i.e. the service tag) how would I be able to tell at a glance whether a component like my RAID controller was embedded or not?
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Feb 1, 2011
Could any RAID gurus kindly assist me on the following RAID-5 issue?I have an mdadm-created RAID5 array consisting of 4 discs. One of the discs was dropping out, so I decided to replace it. Somehow, this went terribly wrong and I succeeded in marking two of the drives as faulty, and the re-adding them as spare.
Now the array is (logically) no longer able to start:
mdadm: Not enough devices to start the array.Degraded and can't create RAID ,auto stop RAID [md1]
I was able to examine the disks though:
Code:
root@127.0.0.1:/etc# mdadm --examine /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 00.90.00
code....
Code:
mdadm --create --assume-clean --level=5 --raid-devices=4 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2
As I don't want to ruin the maybe small chance I have left to rescue my data, I would like to hear the input of this wise community.
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Aug 15, 2010
I always used to wonder how do web hosting companies host their websites. My problem is I saw some one having their website.I have a degree in Computer Science. I am not clear as how do these web hosting companies give the logins to their users as root. Meaning how can a hosting provider provide root login to say 1000 users and each having a different IP address.
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Feb 5, 2010
I forced my workplace to forgo windows and opt for linux for web and mail server. I'm setting up Centos 5.4 on it and I ran into a problem. The server machine is a HP Proliant DL120 G5 (quad core processor, 4GB Ram, two SATA drives, 150GB each attached to the hardware RAID Controller on board). RAID is enabled in the BIOS.I pop in the Centos disk and go through the installation process.
When I get to the stage where I partition my hard drive,it is showing one hard drive, not as traditional sda.but as mapper/ddf1_4035305a86a354a45.I looked around and figured that I need to give Centos the raid drivers. I downloaded it from:
[URL]
I follow the instructions and download the aarahci-1.4.17015-1.rhel5.i686.dd.gz file and unzipped it using gunzip. Then on another nix system, i do this:
dd if=aarahci-1.4.17015-1.rhel5.i686.dd of=/dev/sdb bs=1440k Note that I am using a usb floppy drive, hence the sdb. After that, during centos setup, i type: linux updates dd
It asks me where the driver is located. I tell it and the installation continues in the graphical mode. But I still get mapper/ddf1_4035305a86.a354a45 as my drive. I tried to continue to install centos on it. It was successfull but when i do a "df -h" it gives me /dev/mapper/ddf1_4035305a86......a354a45p1 as /boot
/dev/mapper/ddf1_4035305a86......a354a45p2 as /
/dev/mapper/ddf1_4035305a86......a354a45p3 as /var
/dev/mapper/ddf1_4035305a86......a354a45p4 as /external
/dev/mapper/ddf1_4035305a86......a354a45p5 as /swap
/dev/mapper/ddf1_4035305a86......a354a45p6 as /home
Well i know why it's giving these, because i set it up that way, but i was hoping it would somehow change to the normal /dev/sda, /dev/sdb. That means that the driver i provided did not work. I have another IBM server (5U) with raid scsi drive and it shows the usual /dev/sda. It also has hardware raid. So i know that there is something wrong with the /dev/mapper/ddf1_4035305a86......a354a45p1 format.
First, is there any way that I can put the aarahci-1.4.17015-1.rhel5.i686.dd (floppy image) on a CD?. I really need to set this up with raid. I know i could simply disable raid in bios and then i would get two normal hard drives sda and sdb. But it has to be a raid setup. Any way to slipstream the driver into the centos dvd? The hp link i provided above, under installation instructions, there are some instructions titled "Important". But I couldn't get it to work.
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Feb 16, 2011
i have registered two domain names that i want to use to connect to my ubuntu server. I was wondering how to do this i was looking at bind9 but that didn't work that great. The server is behind a router with firewall i can connect to it using the external IP address but i like to use the two domain names if that is possible.
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Sep 8, 2010
I am thinking of starting a business creating web pages and supplying a 'enterprise server' type solutions, whilst still being highly cost effective - eg recomend the client to use an 'old' pc for the majority of their server needs (LDAP, mail, firewall, web server etc). I plan on doing all of this on a linux platform, so as to pass the cost savings of related 'microsoft enterprise systems' to my clients ~ thereby making my proposition more interesting to clients. However I'm not sure if the 'old' pc idea will 'cut the mustard' in terms of serving web pages. So my real question is, at what point does the speed of the internet connection reach a bottle neck with the speed of my CPU? As an 'example' in case I'm not being very clear (which I'm not sure I am).
My old pc has an AMD athlon chip in it, and equally old 30GB and 40GB HDD (SCSI ~ did I mention that they are old!). My intention is to set up a system to the above type specification at home, to see how long it takes me to do, and to give me an idea of what I should charge clients. I understand all the technology, but initially (to save on personal startup costs) I was intending to use my old pc as my personal gateway to the world, $40 for the web registration for 1 year is a considerable saving compared to the $20 per month for a hosted service ~ although as soon as things are going and being 'profitable' I would most likely either upgrade my server or get a hosted service. Any tools I can download onto the server to 'determine' the power consumption over any given period?
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May 13, 2010
The company I work for, as usual, is Microsoft-centric. I'm attempting to integrate my Ubuntu server into the domain to allow domain users to authenticate to the server and access file shares using Samba. Here's my current configuration:
[Code].....
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Jun 30, 2010
looking to implement a website where business partners can download/upload documents. The files and the "partner areas" should be password protected.Are there open source projects / Ubuntu packages readily available for implementing this type of web-based file sharing service
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Mar 29, 2010
I am thinking about buying a domain name and hosting my web server.
I have seen pricing from $8 to $30 a year. Any favorites from fellow ubunters? Also this whole "whois" thing scares me, if I am correct my information I enter when buying the domain is enter into some big pool of information. People can find this information out and dig up important information. url Can I prevent this with private Whois or how do I set it up? This website examples some of my fears with this whole WhoIs thing, url whois/Private-Whois.html Does most/all domain registers come with email or just email forwarding or both? How does that work? At this moment, my only question about Web Hosting is how do I get Website Statistics as in: Stats, web analytics, web traffic stats and more? I will be web hosting through Ubuntu 9.10 gnome.
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Feb 16, 2010
Ubuntu Server 9.10I want to set up my dhcp server to also be my DNS server so do I skip these lines or point them at the same server that the config file is on?
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Feb 18, 2010
In the office there is a local network with samba+openldap PDC. The local domain name is company.net. The company desided to create a corporate Website on a remote hosting and desided that the site's domain should be company.net which is same as local network's domain name. So now it is not possible to reach that corporate website from within the company's local network because, as I guess, bind9 which is installed on above menioned PDC looks for company.net on a local webserver. Is there a possibility to let people from this local network browse the remote site?
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Aug 6, 2010
I'm looking for doing AOE (Ata over ethernet) inexpensively with single board computers, like Routerboard stuff, but is there anything with sata plugs. Hopefully I can get each board for hopefully around $50, but a little more would be ok. Non-x86 is fine, Debian is as good as Ubuntu.
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Mar 1, 2010
I have a multifunction printer that if I scan files I can save it to a shared directory. It's asking for a domain though, which I believe it's referring to a domain controller?
I was wondering if I could just take ubuntu standard edition and install samba and if I could create a domain using Samba? Or if that's not what I want?
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Apr 4, 2010
I'm just getting familiar with my new VPS. I have webmin installed. I'd like to host more than 1 website on my server and I just can't figure out how to add a new domain (addon domain) to my server.
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Jun 29, 2010
what is the best way of changing DNS Domain name in ubuntu 8.10? My server has bind installed and I can configure dns by webmin. I've all the configuration files under /etc/bind/.[URL]..
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Dec 28, 2010
I have the lastest version of ubuntu server up and running along with a website shopping script working perfectly. Now I need to change the url in the address bar so that it stops displaying my ip address and shows instead my choice of domain name for whatever page has been opened. I have a number of domains available and each are redirecting traffic to my home server, but the address bar url alters to my ip address whichever I use. How then do I go about this change? Obviously this is to do with dns resolving stuff which I have no experience of. Can someone put down in as few steps as possible what I need to do?
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Jan 11, 2011
I have a truly freakish thing happening here. First I'll start with a general map:
Workstation A (10.10.0.100) - Ubuntu 10.10 joined to mydomain.local via likewise-open
Workstation B (10.10.0.101) - Ubuntu 10.10 joined to mydomain.local via likewise-open
Workstation C (10.10.0.102) - Ubuntu 10.10 NOT joined to any domain
Server A (10.10.0.1) - Windows 2003 AD Server on mydomain.local
Server B (10.20.0.1) - Ubuntu 10.10 joined to otherdomain.remote
As you can see I've successfully installed likewise and I've been able to get SUCCESS notifications from the join. I've been able to log in locally with a domain user and use a domain user password. I've also added a special Group in AD for linuxadmins and then added that to my /etc/sudoers file so I can sudo from a Domain Account. Great right? I'm slowly replacing Windows. But there's a hitch:
I can't SSH from machine to machine! but it's still not quite that simple.
I can SSH from Workstation A to Workstation C as a Domain User.
I can SSH(Putty) from Server A to Workstation A and B as a Domain User.
I can SSH from Server B to Workstation C as an alternate Domain User.
I can't SSH from Workstation A to Workstation B as a Domain User.
I can SSH from Workstation A to Workstation B as a Local User.
I can SSH from Workstation B to Workstation A as a Local User.
I can't SSH from Workstation B to Workstation A as a Domain User.
Complicated enough for you? The simple version is that if it's joined to the domain I can't ssh into another machine that's also joined to the domain while I'm a domain user. But give me a local account and it's as if there's not problem. I tried looking through the logs to find something but wasn't about to find a "sshd" type log. Syslog was completely unhelpful as it doesn't really show anything for the time stamps of my connections. Where does one start troubleshooting this?
I thought it might be a groups thing like the sudoers file, but I don't have an ssh or sshd group. Oh and what does SSH do? What's the error it throws?
Code:
MYDOMAINdomainadmin@workstationa:/$ ssh mydomain\domainadmin@workstationB
The authenticity of host 'WorkstationB (10.10.0.101)' can't be established.
RSA key fingerprint is OB:SC:UR:ED:FR:OM:YO:UF:OR:PR:IV:AC:YR:EA:LL:Y!.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'WorkstationB,10.10.0.101' (RSA) to the list of known hosts.
Here it waits for exactly 120 seconds and then...
Code:
Connection closed by 10.10.0.101
What can I do?
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May 9, 2011
I set up a mailserver using this tutorial:[URL].. It works fine so far. I run this server for a small company with about 20 mailboxes where a address looks like that.[URL].. Now I want to set up an alias domain so that [URL].. also automatically is directed into the mailbox of "user".
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Jul 25, 2011
I've setup a LAMP server at home & i'm trying to get a webserver running. I'm having trouble finding information on how to "point" my domain at my IP.
The site is up & accessible. I own the domain, but I don't know where to go from here.
I believe I need to change the dns servers on godaddy, but what to?
Is there a free service which will update my IP when it changes?
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Sep 1, 2011
I am changing domain name for web, web is staying on same IP / ServerI want www.OLD.com to redirect (change address name in browser) to at the moment both point to same IP..am not sure why but this .htaccess is not working.
Code:
#Options +FollowSymLinks
RewriteEngine on
[code]....
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Apr 4, 2010
I don't know if the problem is the way I create my shares on the Domain member, but here is the way I've configured my systems. My systems are home based, and though the topology may be all wrong, it's set up this way only for test purposes. I love to get things up and running.I've already had a Domain Member running under Samba 3.02xx (Centos), but I'm having problems under Ubuntu and Samba 3.40
Server call Citadel is a VMware Server. I've got 3 virutal machines on this Server, 2 Ubunt 9.10 servers, and 1 Windows XP pro. One of my virtual servers is call Winserver, a Samba PDC server using TDBSAM as it's backend. Configured and working well. I have a share that I can access.On my Windows XP, I'm a domain member, able to access my WinserverServer share "Linux Doc", but when I try to access my domain member, it keeps asking me to login.
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Apr 18, 2010
I am a complete newbie at web servers, so I installed Ubuntu Server and have a LAMP set up. I have gotten dynamic DNS to link to my domain, and that seems to be working. My domain is 6py7.com. If I try to access my domain from within my home network it links me to my router's main page (192.168.2.1). I have my server set up with a static ip at 192.168.2.100 and have port forwarding set up.
Is there something I missed with the setup of this? I can only access my domain if I use a network outside of my home network, but if I am within my home network the domain name links to the router.
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Apr 20, 2010
I want to make BIND9 aware of my TLD so I need to give it an A record. Then I wanted to create CNAME for ftp, mail and so on as time permits
I have webmin so I need to work from that.
my TLD is [URL]
I wanted to bolt on www, ftp for now
www is port 80, ftp port 21 etc
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May 22, 2010
I have set up 10.04 server, got userdir working (/home/username/public_html) so I can access it with h ttp://myipaddress/~username. What do I need to do to get mydomain.com to point to http://myipaddress/~username?
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Nov 1, 2010
I have a domain through google (enom) I have one website which I host web forums My friend has a website which he hosts the frontpage We're on two separate hosts We're trying to combine the websites together and my friend wants to utilize his hosting.Is it possible to get this one domain to work on two webservers without doing a redirect? For exmaple: have [URL] be the frontpage and [URL] be the forums
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Nov 30, 2010
This is piece of my samba configuration with LDAP
Code:
workgroup = PCPR
netbios name = SERWER
server string = Samba %h PDC
My domain name is PCPR, (workgroup name is equal to the PDC's domain name, right?) but when I execute
Code:
net getlocalsid
i get
Code:
SID for domain SERWER is: S-1-5-21-3946501231-293034350-4217055208
Why SERWER, should not be PCPR?
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Jan 14, 2011
how to make a local domain? I have a laptop and server in my localhost. How can I make so that when I type backup.home or something like that into chrome it points to my server? I have apache2 installed with some virtualhost and mypage.192.168.1.4(my server ip) dosent work I propably need a domain or something like that.
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Feb 5, 2011
I have created a mail server using citadel that seems to be working nicely. My only problem is the only way to access the server is to go to 71.114.220.3:2000 (it's running on port 2000). I would like to be able to access the server by going to mail.annarrankings.comI'm using godaddy for my dns and set an A record as host=mail, points to =@Then set the mx server to priority=10, host=mail.annarrankings.com, points to = @
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