[Bassetlug mailing] Setting up RAID
Danny Roberts
droberts23 at csc.com
Tue Mar 24 08:08:17 UTC 2009
Can you just not use a remote connection tool such as VNC
(http://www.realvnc.com/) or
PuTTY (http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html) to
remotely connect to the server from one of your desktop machines? I have
used PuTTY to connect from a Windows machine (There is also a *NIX
version) to a Linux server on a work training course and it was very easy
to use and from what I saw very easy to install also.
As for VNC I can't give any really advice as I have never used it but I
believe others in the group have so maybe they can help.
One of these tools should be sufficient for what you need to do. You won't
need DNS unless you want to assign a host name and use that rather than
the IP address.
I'm not sure if you will require any configuration of any type for these
applications to access your server, but if there is I don't think it's
anything more than opening the relevant port that the applications use.
Kind Regards
DANNY ROBERTS
EMEA Cross Platform Services - Evergreen
CSC
GOS I p : +(44) 1246 523181 I droberts23 at csc.com I
www.csc.com
CSC, Block A, Manor Offices, Old Road, Chesterfield, S40 3QT.
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"philip jones" <phil at thejones-family.co.uk>
Sent by: bassetlug-bounces at mailman.lug.org.uk
23/03/2009 19:02
Please respond to
"LUG Mailing list for Bassetlaw and N. Notts"
<bassetlug at mailman.lug.org.uk>
To
"LUG Mailing list for Bassetlaw and N. Notts"
<bassetlug at mailman.lug.org.uk>
cc
Subject
Re: [Bassetlug mailing] Setting up RAID
hi lug
I have managed to install apache and php
but apache dosn't work unless i disable SElinux in fedora 10. It works
fine
on my home network and have browsed a web page and phpinfo. I have
configured the fire wall to open port 80 and port 22 ssh. But port 21ftp
doesn't work so I have to use sftp port 22. my next task is to install
mysql.
how do i access my server from the www do i have to set up a DNS server to
deal with my routers ip address and ip address of my computer on my lan.
also my router has a fire wall which blocks inward access from the web do
i
need a different router for my server.
kind regards
philip
----- Original Message -----
From: "Danny Roberts" <droberts23 at csc.com>
To: "LUG Mailing list for Bassetlaw and N. Notts"
<bassetlug at mailman.lug.org.uk>
Sent: Monday, March 23, 2009 8:19 AM
Subject: Re: [Bassetlug mailing] Setting up RAID
> Philip I believe you can simply type in the following to your web
browser
> to check if Apache is installed or not:
>
> http://127.0.0.1/
>
> If successful you should get a page telling you Apache has been
installed!
>
> Kind Regards
>
> DANNY ROBERTS
> EMEA Cross Platform Services - Evergreen
> CSC
>
> GOS I p : +(44) 1246 523181 I droberts23 at csc.com I
> www.csc.com
>
> CSC, Block A, Manor Offices, Old Road, Chesterfield, S40 3QT.
>
> CSC • This is a PRIVATE message. If you are not the intended recipient,
> please delete without copying and kindly advise us by e-mail of the
> mistake in delivery. NOTE: Regardless of content, this e-mail shall not
> operate to bind CSC to any order or other contract unless pursuant to
> explicit written agreement or government initiative expressly permitting
> the use of e-mail for such purpose • CSC Computer Sciences Limited •
> Registered Office: Royal Pavilion, Wellesley Road, Aldershot, Hampshire,
> GU11 1PZ, UK • Registered in England No: 0963578
>
>
>
>
> "philip jones" <phil at thejones-family.co.uk>
> Sent by: bassetlug-bounces at mailman.lug.org.uk
> 20/03/2009 21:58
> Please respond to
> "LUG Mailing list for Bassetlaw and N. Notts"
> <bassetlug at mailman.lug.org.uk>
>
>
> To
> "LUG Mailing list for Bassetlaw and N. Notts"
> <bassetlug at mailman.lug.org.uk>
> cc
>
> Subject
> Re: [Bassetlug mailing] Setting up RAID
>
>
>
>
>
>
> To Martin
> I have currently install fedora 10 which has the option to set up
raid1+0
> (10) .once installed it was time to find out whether the drives were
> working
> as a raid array or separate so using our test
> mdadm /dev/sda
> we get "sda is not an md array"
> this where we went wrong
> we should type
> mdadm /dev/md0
> we get "148.84gib raid10 4 devices 0 spares use mdadm --detail for more
> information.
> the raid10 is now running
> Now I have to set it up as a web server i wounder if apache has been
> installed ?
> kind regards philip
>
> ----- Original Message -----
> From: "Danny Roberts" <droberts23 at csc.com>
> To: "LUG Mailing list for Bassetlaw and N. Notts"
> <bassetlug at mailman.lug.org.uk>
> Sent: Thursday, March 19, 2009 3:55 PM
> Subject: Re: [Bassetlug mailing] Setting up RAID
>
>
>> We initially tried using the software RAID (via the Ubuntu
>> Installer/Partitioner) but it seemed incapable of creating the RAID 10
>> setup we wanted so Philip switched it over to hardware RAID.
>>
>> RAID 5 is great (we use a lot of it at work albeit on that "other OS")
> but
>> that would lack the improved performance Philip wanted from the RAID 10
>> configuration.
>>
>> I think playing around with RAID and finishing off Philip's web server
>> could be great for the next LUG meeting, I know I'm certainly
interested
>> in learning more. And of course if no one else wants the Compaq servers
>> etc I'd love to give them a new home ;-)
>>
>> Mark do you have any experience in setting up complex/esoteric RAID
> setups
>> like RAID 50, RAID 60 or even RAID 100? That would probably be beyond
> the
>> scope of one of our meetings but I've done a lot of reading up on RAID
>> today and its whetted my appetite.
>>
>> Kind Regards
>>
>> DANNY ROBERTS
>> EMEA Cross Platform Services - Evergreen
>> CSC
>>
>> GOS I p : +(44) 1246 523181 I droberts23 at csc.com I
>> www.csc.com
>>
>> CSC, Block A, Manor Offices, Old Road, Chesterfield, S40 3QT.
>>
>> CSC • This is a PRIVATE message. If you are not the intended recipient,
>> please delete without copying and kindly advise us by e-mail of the
>> mistake in delivery. NOTE: Regardless of content, this e-mail shall
not
>> operate to bind CSC to any order or other contract unless pursuant to
>> explicit written agreement or government initiative expressly
permitting
>> the use of e-mail for such purpose • CSC Computer Sciences Limited •
>> Registered Office: Royal Pavilion, Wellesley Road, Aldershot,
Hampshire,
>> GU11 1PZ, UK • Registered in England No: 0963578
>>
>>
>>
>>
>> Rev Mark Pengelly <minister at thecrossing.co.uk>
>> Sent by: bassetlug-bounces at mailman.lug.org.uk
>> 19/03/2009 15:44
>> Please respond to
>> "LUG Mailing list for Bassetlaw and N. Notts"
>> <bassetlug at mailman.lug.org.uk>
>>
>>
>> To
>> "LUG Mailing list for Bassetlaw and N. Notts"
>> <bassetlug at mailman.lug.org.uk>
>> cc
>>
>> Subject
>> Re: [Bassetlug mailing] Setting up RAID
>>
>>
>>
>>
>>
>>
>> Was Philip's discussion all relating to mdadm? We use that on the
>> crossings' server. it is of course 'software raid' not to be confused
>> with a hardware raid controller.
>>
>> Occasionally we have had glitches with our raid 1 setup, ie a disk
drops
>> out of the raid and then md commands are used to add it back in. So far
>> it has always done so, although sometimes we have had to do a cold
>> reboot of the machine.
>>
>> Hardware raid is preferable if available. Most compaq servers raid
>> hardware is supported in linux and can usually see a partition as a
boot
>> device when installing, once the array is setup using the proprietary
>> software (SmartStart in the case of compaq).
>>
>> I have a pci hardware raid card on my main ubuntu machine, but never
>> really got it working properly.
>>
>> Many modern motherboards with sata raid are actually only using
>> (windows) software to create the raid, it's not full proper hardware
>> raid (I think).
>>
>> if anyone wants to play with raid I have 2 x compaq 1500 servers, one
>> with 5 drives, one with 3 drives in it. I had redhat 6 running merrily
>> on it about 5 years ago, I also have a scsi attached array case with
>> another 7 drives in (only 2.1gb per drive). I've been meaning to clear
>> this out for months, free to a good home! only catch - you need to have
>> ear defenders on when all the drives start up! i ran mine in the
>> garage!! Perhaps I'll bring it to bassetLUG show how to set it up and
>> then someone else could take it home!?
>>
>> Sounds good Philip, sorry I missed it! Raid is definately cool, what
>> about raid 5?! my favourite!
>>
>> Mark
>>
>>
>>
>> On Thu, 2009-03-19 at 13:55 +0000, MJ.Wells wrote:
>>
>>> Good to see 'old' and 'new' members at the meeting last evening where
>> Philip
>>> gave us a very informative demonstration of setting up RAID in Ubuntu.
>>>
>>> Philip told us that he had occasionally seen problems when he set up
>> some
>>> systems which he felt were due to not having identical drives in the
>> array
>>> as is recommended.
>>>
>>> Philip then showed us that setting up the RAID in the BIOS causes
> Linux
>> to
>>> be unable to find the boot loader so that the most expensive of
>> equipment
>>> just loops at boot as it could save me much time in the future. It
> seems
>>> that the boot partition has to be excluded from RAID.
>>>
>>> Philip went on to explain the difference between RAID 0 (striped) and
>> RAID 1
>>> (mirrored) along with the more complex RAID 10 (1+0) which combines
>> both.
>>> After a detailed setup of the partitions using the hardware RAID which
>> led
>>> to the failure to boot, Philip showed us the process of setting up the
>>> drives in the Ubuntu Server install. Finally we looked at leaving the
>> setup
>>> of the RAID until Ubuntu had been fully loaded on some of the disks.
>>>
>>> Unfortunately, even though we extended our evening until well past
10pm
>> as
>>> we were enjoying the demonstration so much, we had to leave the full
> use
>> of
>>> mdadm until another time.
>>>
>>> I have not encountered this technology before and have learned a lot.
>> Thanks
>>> Philip for a very informative and useful demonstration. Now ... I
> wonder
>>> where can I lay my hands on four unwanted 500Gb-ish drives so that I
> can
>> try
>>> it all for myself?
>>>
>>> Martin
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Bassetlug mailing list
>>> Bassetlug at mailman.lug.org.uk
>>> https://mailman.lug.org.uk/mailman/listinfo/bassetlug
>>>
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