Ubuntu Servers :: Ext USB Disk As Tertiary Offsite Mirror?
Jul 28, 2011
Looking for a few pointers here.I am trying to automate the adding and removal of two external usb disks to my linux raid mirror (md) that I use for an offsite copy of my data.This is what I currently do.Server has 2 x 500 gb internal disks setup with linux raid 1. (md)I connect 1 of the external usb disks, add it as a secondary mirror to the main array.After it rebuilds, I remove it from the array and take it home.I have two of these external drives so one of them is always offsite, and the other is either being rebuilt, or connected as a secondary mirror.At the moment, this involves running commands manually. I cannot seem to figure out how to automatically add these disks from and to the array with a script. It seems that every time it rebuilds on the external disk, it gives it a new UUID.
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Aug 4, 2010
I have some servers running rhel5,they are in mirror disk 2 disk there is no any hardware RAID only software RAID and they in remote place.
Assume RHEL5 hda(Disk1) & hdb(Disk2) currently in mirror, i have to install some patches in it. Before that i have to break the mirror and boot from hdb if it is successful. then i have to apply the patches to hda.
After that i have to boot from hda and check whether the latest patches updated and working fine. finally i have put them in mirror. the same scenario for solaris.
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Apr 27, 2011
I've got a new server built, shaken down and patched (2.6.18-194.el5). Works nicely.
I don't want to rebuild it from scratch if the root drive goes belly up, but I do NOT have a hardware raid controller.
The root disk should be pretty static at this point... any suggestions how I might back it up?
I was thinking I could put in another disk (same size or bigger) and use cron to run something like this nightly: dd if=/dev/sda1 of=/dev/sda2
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May 18, 2010
Was wondering if it's possible to set up a single disk with btrfs and then later on convert it to a 'mirrored' array?
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Jun 13, 2011
At the Get Slackware page at the Slackware website it gives a list of addresses which when I click one of the addresses it redirects to another page with a list of mirror images. Which address and which mirror image do I need to work with Kubuntu 11.04 on my netbook so I can create a USB startup disk? With my connection speed these mirror image downloads take about an hour and a half and I cannot just be guessing which mirror image to download.
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Jan 30, 2010
I am thinking about setting up a local Debian Repository mirror. I want it to mirror just the Debian Repo at [URL].. Anyone have any idea how much disk space I might need to do it?
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May 17, 2010
After digging around trying to figure out how to upgrade my local apt-mirror to 10.04, I figured I would share it here so anyone else who does this, can do it with ease. It requires a few steps, and editing a couple files, but the process is relatively painless.This assumes you have an apt-mirror already running on your server. Also it assumes you're using /var/www/ubuntu as your root where all your packages are stored.
The first step is to visit http://changelogs.ubuntu.com and download the meta-release packages. Create a new directory, /var/www/ubuntu/upgrade, and drop the files there.On the client's end, a single file needs to be edited, /etc/update-manager/meta-release. Change the URI's in that file to the URI of your apt-mirror and run your update manager. Your upgrade will start, only asking if you want to change your paths in your sources.list. Agree to it, and the packages will download and configure.
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Sep 27, 2010
I'm wondering if its possible to add an external, non-Ubuntu mirror to my mirror server?
We have a few packages which need to be deployed during kickstart (Cinelerra and Eclipse plugins), and I would like to put them into my mirror repo so they are grabbed during kickstart, rather than manually adding them after the system is up.
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Apr 13, 2010
i have a complete local ubuntu mirror; nicely kept in sync by apt-mirror. unfortunately, i need to keep some of the old releases as well. [URL].. kindly provides those. with the upcoming end-of-life of intrepid ibex, i would like to move the packages for intrepid on my mirror to the directory i use for the old-releases, without having to download these approximately 30GB from the original server.
is there a way to move distributions in a local mirror? apt-move seems only capable of rearranging the packages in /var/cache/apt/archives/ .
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Nov 1, 2010
looking for a bit of assistance from those that know. i would like to setup an offsite backup server preferably using my current ubuntu 10.10 server.i would like something that has a client that can be used on windows PC's and that is managed so i can controll bandwidth and storage space.it will only be used for storing important files and not full backups of machines.i thought about using something like comodo backup for the clients and just setting up and FTP server but just wonderd if people know of a better solution.
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Jan 13, 2010
I am looking for a solution to mirror a directory on my companys computer that runs in windows to an external ubuntu server on the internet.
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Apr 10, 2011
I accidentally rm -rf 'ed /etc directory from the main server. The server has raid1 soft-raid. Is there a way to recover the directory.
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Jan 30, 2009
I have been looking into setting up a local repository for updates etc as we have an increasing number of fedora clients/servers. Searching the web I found multiple how-to's on how to accomplish this little project. One thing that bothers me is that each how-to seems to refer to a "static URL" mirror for rsync to get the rpms.
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Oct 11, 2009
I am Setting up 3 HP Proliant servers with 2 250GB Hard Drives in each. How Do I mirror the drives, and link all the servers together??? I am installing Centos 5.3. From the software install menu I installed Gnome, and the Server software, but can't seem to figure out how to get into the server side of it from gnome. Sorry for all the questions, but I have been out of the loop of all this for about 8 years and trying to re-learn everything.
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Apr 7, 2010
I would like to make a server in my home that could be used to backup old job files at a print shop that I work at, creating a low cost offsite backup for our backup server. It would only backup 30-200mb a night, depending on what size the various jobs are.
There are 4 workstations that backup to a network share hosted on a fileserver(tower). It only has a single TB drive, and now people are offloading files to this server to free there computer of disk space. This is going to be a problem once the "server" disk fails. The managment there will not pay a monthly fee for 500+GB of files we prob will never need, but cant delete. I was hoping I could create some sort of "online" backup hosted at my house. ( like amazon, carbonite but without the fancy gui)
After researching a while I can't seem to come up with a great solution (partly due to my lack of networking knowledge i'm sure!). I have a pfSense router, with VPN capabilities, and the router at work (Cisco/Linksys RVS4000) also can VPN. I would like to use linux as the server, I am in the process of learning Ubuntu. Also freeNAS via FTP is another thought, might be easier?
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Aug 22, 2011
I want to make a fedora mirror site and i only want to have the fedora 15 i386 rpm files i dont want to download all the rest. How do i di this ?
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Feb 10, 2011
I have a number of CentOS servers with latest 5.xI have 3 nameservers in the resolv.conf files. All 3 nameservers test out fine when checking for domain lookups.I'm having some trouble with ns1 and shut it down.l None of the CentOS machines fail over to the ns2 & ns3 entries. Basically everything stops resolving even though the other 2 nameservers are alive and well.
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Aug 30, 2010
I own an Iomega NAS enclosure. It is basically a card with 2 sata drives attached and a network card that runs an small web interface. To make a long story short. The controller card has went bad. One drive dropped out of the mirrored set.... and then came back in and attempted to rebuild. Several hours later the drive dropped out again. I attempted to replace the drive and the controller would not rebuild at all.
To summarize. I have accepted that the controller card is toast and want to proceed assuming one drive is compromised and the other still has salvageable data (About 18 GB needs recovered) I took the presumed "good" drive.. attached it to a standalone enclousre that takes it from sata to USB.When I look under disk manager (using Ubuntu 10) I see the following appear
1) the multi Disk device appears indicating it is part of a logical drive. Indented from that is
2) The "Array" Icon
3) The USB icon indicating a "peripheral device" Indented from that is
4) the Drive as a 500 GB hard disk (correct)
when i click on 4) I see 2 volumes 1 1GB volume with partition type Linux (0x83) and a 499 GB partition with the same type (0x83) However..because it thinks it is part of an array it is not mounting. HOW do I tell this drive "you are not in an mirrored array anymore...mount as a single drive"
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Apr 26, 2010
I am managing a Fedora dedicated server with Plesk 9 and just recently moved the email for one of the domains on the server to Google Apps for business. Unfortunately, I cannot get email messages from the website forms to deliver to addresses on this domain. For anyone familiar with Plesk, I have disabled mail in the hosting settings by un-checking the "Activate mail service on domain" checkbox and there are no accounts in the domain. (Other readings have indicated that this should be enough to allow mail to be directed to the appropriate server). My MX records correctly point to the google apps mail server.
I'm quite comfortable with command line, but I know almost nothing about the sendmail program or its alternatives and my attempts at researching how to set up this relay has been futile. I'm pretty sure I'm using sendmail and not qmail or anything else from what the red-hat style "alternatives" symlinks point to. I've also checked the /etc/mail/access, domaintable, mailertable, sendmail.cf, virtusertable, local-host-names, sendmail.cf, and submit.cf and most of these files are empty (except the .cf files), and the sendmail.cf and submit.cf make no reference to the domain in question.
Here is the output from a sendmail test that was was not received. (Private data omitted of course).
sendmail -v xxx@yyy.com
test email from yyy.com webserver. please ignore.
xxx@yyy.com... Connecting to [127.0.0.1] via relay...
220 my.server.com ESMTP
>>> EHLO my.server.com
250-my.server.com .....
Closing connection to [127.0.0.1]
>>> QUIT
Performing the same test and sending an email to a non-hosted domain works fine.
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Jun 28, 2010
I have an SiI hardware SATA RAID card, with two 500GB disks in mirrored RAID configuration. When I first plugged them in and set it up, things seemed to work ok, but on boot the raid controller told me that the RAID needed rebuilding, and it would happen automatically after POST. So I didn't worry about it, and the drive mounted fine, and it's been that way for years. I just went in and manually on-line rebuilt the RAID in the controller's BIOS, and now when I boot into Ubuntu, both disks show up in fdisk, but neither show up in /dev/disk/by-uuid. Am I missing something?
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Jan 9, 2010
I'm using f12. My university has recently become a mirror for fedora packages. But i'm facing a trivial problem. I have set proxy for yum so that the packages that are not available on local mirror can be downloaded from other mirrors. But then i don't know how to set no proxy for my local server. Consequently it is not using my local mirror at all. Tell me how to set no proxy for the local mirror. I want my local mirror because it's damn fast. My proxy settings are like this (they go in /etc/yum.conf):
[code]....
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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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Apr 23, 2009
We have an existing Primary and Secondary DNS server (BIND) and would like to setup a Tertiary DNS server. My question is what would be the tertiary's configuration? Will it be the same as the secondary server? What do I need to add to the Primary server (zone and db file)?
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Jun 30, 2010
So i just installed ubuntu server 8.04. Got everything set up and started putting my files on it. 6 Hours of copying later I get a message saying that my Disk is full. This is a 1.5TB HD and it stopped copying at 269GB. fdisk shows the drive as 1.5TB, and ls -sh shows that only 269GB have been used. Yet I cannot add any more files. The other weird thing is that df doesn't show the hard drive, yet I know it is mounted and accessible. If it makes a difference I have it formatted to ext3.
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Feb 28, 2011
my file server i am trying to replace a small 30gb disk with a larger one i just purchased. i need to find a way to backup the data on it to another part of the lvm and then remove it hopefully with the backup and the rest of my data intact.
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Apr 9, 2010
I was installing Ubuntu 9.04 64bit server from the CD on a machine that I normally run ESXi on. I wanted to test disk speed on a direct install vs. the install in ESXi, so I installed a 4th hard disk, shutdown ESXi, and installed Ubuntu directly on the new disk (4th Bios disk - SCSI:3 or sdd). When I tried to boot from this disk, nothing happened. I rebooted from the ESXi install disk (SCSI:2 or sdc), all was fine. Playing around, I finally found that to boot the ubuntu install, i had to boot from SCSI:0 - Grub had installed there, even though I never indicated that disk for anything during the install. It would be much better if Grub ASKED where it should be install, rather than assuming.
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Apr 19, 2010
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?
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May 30, 2010
Best way to do a scheduled backup of a server (PowerPC, Ubuntu 9.10), when an exact copy of the linux partition would be made on a disk of the same size? It seems there are several solution, but I have problems choosing the best.
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Aug 19, 2010
I am running latest apache2 available in the lucid repos on my desktop. All packages are updated as of this moment. Now in the root of my web server I have placed several soft links that point to folders on another ext3/ntfs partitions on the same disk. When I try to download any large file (say above 500M)on this server using firefox, when the 'save' window appears, my desktop freezes, I notice very high cpu-ram-disk usage, even though I have not yet clicked on 'ok' to save the file. This issue is not present when the file size is small. Note that firefox and the webserver are running on the same computer.
Also I have tried nginx and lighttpd and the issue is present there as well. When I tried downloading the same files using Internet Explorer 6.0 using a XP VM the issue is not present. However on Windows as well using Firefox the issue recurs.
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Oct 20, 2010
On a ubuntu 9.10 server. The problem is that when I try to mkdir in /var/local/ it says th disk is full but running df -h outputs:
Code:
I cannot see what's eating up my space in /var.
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