Ubuntu :: Redundancy The Ssd On Hdd?
Jun 16, 2011
I bought a brand new PC with 2 hard disk: a solid state 250gb and a 500gb sata drive. On the first one, I installed Ubuntu LTS 10.04.2.
My question is: how can I make the redundancy of the boot partition and / on the sata disk? I thought to clone the internal hard disk and then run a rsync before every shutdown. But the PC doesn't always boot from the ssd and change the boot sequence from the bios has no effect. I had also considered the idea of a raid 1 with mdadm, but it seems to worsen the performance.
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Apr 17, 2010
Evening, had a switch outage today, what a PITA. ok, that's behind me, my next project is to have the least amount of single point of failures.
So the current scenario is the following; ISP -> linux firewall -> 3 network subnets.
1. load balanced network
2. public servers (ftp, etc.)
3. management network
I would like to change it to be more like; ISP -> switch, 2 patch cords to 2 seperate firewalls (right now using a basic linux box with iptables, works great), might go the endian or other route with failover. But, each server has a public IP and private 192.x ip, most server have 2 adapters 2 interfaces each, so I do have 4 ports already. I would like to send 1nic with public/private to switch1, the other to switch 2 but either keep them down, or better the same IP. So I guess, is this possible? I would say the word bonding, not sure if it can be used in this term. The webserver are running Ubuntu 9.10 64bit, DB's etc are mostly CentOS 5.4 box's.
We have all dell hardware, switches, etc. but I don't know in my years, can you have 2 seperate adapters share an IP for fault tollerance, or would I have to down/up each of the nic's in the event of a switch failure.
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Jan 20, 2010
Can list options available for server redundancy? (i.e. fault tolerance methods so that if a server goes down another server can take over). Also is it possible to implement RAID1/disk mirroring across servers?
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Mar 4, 2010
I have to implement hardware redundancy.I have 2 linux machine for this and each have similar configuration/hardware. Lets say two machine Linux1 and Linux2. Currenty Linux1 have one NIC and it has 4 Ip address bind on it. Now I have to down the Linux1 and up Linux2 with same Ip addresses. Could it possible to configure all the Ip (same)address on both Linux1 and Linux2 and Linux1 have eth status UP while Linux2 have eth:y status down. I am trying it but on Linux2 machine I cant able to create multiple Ip interfaces with down status.
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Jan 3, 2010
I currently have 9 physical servers that I wanted to condense to 1 physical server with 7 VMs using Xen. The only issue that I have with doing this is that if the server happens to fail due to hardware problems, I am going to have a major issue. I wanted to set up a two node cluster so in the event of something happening to one of the servers, it will automatic failover to the next.
With so many ways to cluster servers, does anyone have any suggestions on the way to perform my needed task. The OS for Xen will be Red Hat and the VMs will have many versions of linux. Some of the VMs will have mysql, apache, dns, and postfix running.
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Apr 2, 2010
I have been using Trixbox CE for a couple of years and a client has asked me to setup a VOIP system with two phones and a couple of extensions. When he gets hit with a borage of phone calls I need to have the call that are behind the others to go the the next extension. I need redundancy if one Internet connection goes down and have the another kick in or failover. How does one configure Trixbox to failover to the other Internet connection and can someone give me a list of carriers in the Washington D.C area. Can someone point me in the right direction?
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Jan 18, 2011
Our machine has two NIC on it but i'm only using one NIC, how do i make the most of the other one? I'm wondering if i can use it as a redundancy or load balanced but i dont know how.
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Dec 22, 2010
I recently added a second interface to my Ubuntu 9.10 server, I now have a dsl AND Cable connection for it, Im not trying to load balance or anything sophisitcated, heres my problem.
The machines networked, I put static entries in my dhcp servers and both interfaces are up and live with dhcp, and Ive tried with dhcp and static, same problem occurs.
But my problem is that services will only respond on one interface at a time, not both.
Anyone know what the heck is going on here?
Kernel IP routing table
Should I make them static and remove both gateways?
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Jul 15, 2010
I have several servers that we have bonded some NICs for rundancy and they will of course switch from primary to secondary NIC if connection state is lost to the switches they are physically connected to, but is there any way to be able to sense upstream connectivity (off switch) for each NIC and failover even though the NIC itself has a connection state to the switch it is plugged into? We are using Dell managed switches on VLANs with trunking.
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Mar 24, 2010
I have four Red Hat 5 servers located in two different geographical sites. they are working active/active on each site.
Is there any software that I can use in order to have the four servers running Active/Active Active/Active in the same time, and if one site has been destroyed the other two servers in the other site handle the traffic?
Basically the traffic is a Web traffic.
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Apr 15, 2009
I have been battering with FC10 and software RAID for a while now, and hopefully I will have a full working system soon. Basically, I tried using the F10 live CD to setup Software RAID 1 between 1 hard drives for redundancy (I know its not hardware raid but budget is tight) with the following table;
[Code]....
I set these up by using the RAID button on the partition section of the install except swap, which I set-up using the New partition button, created 1 swap partition on each hard drive that didn't take part in RAID. Almost every time I tried to do this install, it halted due to an error with one of the raid partitions and exited the installer. I actually managed it once, in about...ooo 10-15 times of trying but I broke it. After getting very frustrated I decided to build it using just 3 partitions
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I left the rest un-touched. This worked fine after completing the install and setting up grub, reboot in to the install. I then installed gparted and cut the drive up further to finish my table on both hard drives. I then used mdadm --create...etc to create my RAID partitions. So I now have
[Code]....
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Jun 29, 2010
I'm new to Linux, so I decided to try using Wubi to get started. THe problem is, when it finished installing 10.04, I got this message: OSError: [Errno 13] Permission denied: u'C:\ubuntu\install\ubuntu-10.04-desktop-amd64.iso' Is there any way around this? It might just be that overly restrictive thing called Vista (which I have the bad luck to be using). I was considering getting a USB drive for Ubuntu anyway..
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Apr 11, 2011
I recently got interested with with OS.. So I downloaded wubi in Ubuntu website. I opted for the Ubuntu Netbook Edition as am using a lappy. However, halfway through finishing download I got an error. The log shows:
OSError: [Errno 13] Permission denied: u'C:\ubuntu\install\ubuntu-10.10-netbook-i386.iso'
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Jan 2, 2010
What is the difference between the Ubuntu Installer for windows and the Ubuntu CD image? If I use the ubuntu installer for windows, does it have the capability to partition my drive, will it enable to share files with windows etc or is it just a way not to have to burn a CD. Just curious, the exact details of the installation files were not made clear on the website. Note: Windows Version: XP, 32bit, SP3. I have not partitioned anything yet.
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Nov 19, 2010
I have windows 7 installed on Disk2 (according to windows Disk Manager), and I installed ubuntu 10.10 on Disk0, choosing the dual boot option at installation.
However, grub does not load (presumably because its on disk0 and my machine appears to boot from disk3), so the machine goes straight into windows 7.
How do I get ubuntu to load?
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Oct 7, 2010
I'm currently running off of my live-cd, and after spending 4 hours of my life trying to fix this myself, i figured someone out here has to know how to help me. Basically, i wanted to try linux, then liked it enough to decide to put on one of my usb-drives (320g adata nobility NH92), and i couldn't get it to boot anything but windows w/o the live-cd, which would then boot the live-cd, lol, in other words, i couldn't get it to boot at all from the external, even though i had changed the setting in my bios to boot from usb first, and tried manually selecting boot from usb and all that fun stuff.
Sooo... eventually i decided it might be a problem with the bootloader, and while i'm not exactly sure at this point what i have done to my computer, all i can successfully boot is the live cd. When I try to boot w/o the live cd, whether i try to boot from my internal (windows) drive, or external, all i get is a device not found error.I think i could fix it if i had windows recovery cd's (i'm running xp, btw), or installation cds, but... unfortunately, they died in a terrible accident. So i have no cd's at all for windows. :/
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Feb 13, 2011
I have been running Ubuntu 10.04 under Windows 7 (Is this call WUBI?) without any problems for a while. My other machines only run Ubuntu (9.04 & 10.04). I decided to give it a try to the latest Ubuntu 10.10. After going through the successful installation and then rebooting, I am getting the following error message once I select 'Ubuntu' in the boot up menu right after the BIOS screen: Booting ' Ubuntu 10.10, kernel 2.6.35-25-generic'
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Jan 26, 2010
I'm wondering if this is even possible. I've searched high and low and have yet to find and answer to this particular setup.
The setup:
Router is in another building.
Desktop connected by WiFi
Laptop connected by WiFi
Both the Desktop and the Laptop are in the same building together. About 5' apart.
SSH server is setup on Desktop
FreeNX client is setup on Laptop
So they can connect just fine via WiFi for remote desktop control of the Desktop from the Laptop (so SSH and FreeNX are working).Is it possible to connect the 2 pc's directly to each other by Ethernet cable AND transfer files between them by Ethernet while still being connected to the Internet by WiFi on them both?Or would the WiFi have to be disabled while using the Ethernet connection?Neither has a Gigabit Ethernet NIC so I know it would at least require a crossover cable or another router to connect the 2 by Ethernet cable.The idea behind all this is to be able to transfer files between computers quickly by Ethernet while the computers are still busy doing other things on the Internet by WiFi.
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May 11, 2010
I've been trying to find what would be the lightest ubuntu or ubuntu based distribution, I have an older PC I'd like to get up and running again, and would prefer something that works pretty quickly on it (for basic web browsing and other things) the specs are:
AMD Duron 900Mhz, 384MB RAM, 40GB HDD, Geforce FX 5200 128MB agp.
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Sep 19, 2010
1. I accidentally wrecked a previous Ubuntu installation so I decided to re-install via the Ubuntu disk. Unfortunately Ubuntu doesn't let me override previous Ubuntu installations...
2. Ubuntu Maverick Meerkat is due to released in about 3 weeks. I want to install it via a clean install.
3. So can anyone tell me how to remove both Ubuntu partitions safely. I am currently running WinVista with Ubuntu Lucid Lynx. I know I have to use something like this to erase GRUB2. Can anyone give me a good tutorial?
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Mar 14, 2011
I want to change from ubuntu 11.04 to ubuntu studio. Is there any way to do this without losing all my stuff/with out completely reinstalling the os?
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Apr 19, 2011
The scenario is as follows - I will be moving across the country and my desktop will stay here powered and online, while I move with a laptop. I need a way to connect to the desktop for file streaming(music and movies) as well as using the virtual machines. I have thought about SSH and VNC.I need something failsafe. That's priority one. I won't be around to fix it if it breaks. I can set the computer to come on in the BIOS at a certain time if the power went out. But if I can get in remotely the whole setup is useless.SSH only provides terminal use, correct? So if I chose that route I would be able to access the computer via command line and play music and movies with mplayer and such, correct? But I would not be able to run the virtual machines? Because there will be no GUI, right?
I have been playing with Vinagre and Vino through the host and guest of a virtual machine and I cannot get it to connect. Is there a better application? x11vnc? I have forwarded port 5900 on the router and have upnp enabled. Got a better remote desktop suggestion?I would like to run this setup headless.(no monitor) I also would like to run it without a gpu if that is possible to make it more energy efficient.Both computers are 64 bits and will be running Ubuntu 10.10 and soon 11.04.Are these crappy ideas to begin with? Should I go another route to get my files and access the virtual machines?
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Nov 24, 2010
After a reinstall of 10.10, I am able to turn on file sharing and so I set up a shared folder.
Windows Vista can see this folder but in my network place, there is only one icon, and it's a "Windows Network" icon. Upon clicking on that, I can see the local network, "Rompus Room".
When I click on Rompus Room, nothing happens for a while, then I get a message saying, "Opening "ROMPUS ROOM". Then I get the final message, "Unable to mount location", followed by, "Failed to retieve share list from server"
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Jan 6, 2010
Is windows 7 UAC basically a user/system control system like sudo?
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Jan 13, 2010
I was running 9.10 in LiveCD mode and was unable to get online. Went to System>Administration>Hardware Drives and found "Broadcom STA wireless driver". Cool. So I went ahead and installed 9.10 (dual boot with Vista), repeated above steps but found no "Broadcom STA wireless driver" option, in fact no proprietary drivers. So I still cannot connect to the Internet, and I don't know where to go from here. (Note: I installed 9.10 side by side with Vista: good? bad?)
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Feb 5, 2010
So I wanted to replace my password prompt with this:it says to write it over the system files in ubuntu, under usr/share/gnome-screensaverbut i cant do that, as it says permissions are denied...
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Mar 8, 2010
while installing ubuntu i made two partitions and set two load points. //home/but in ubuntu there is only one partition shown(filesystem).. what is going on?
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Mar 25, 2010
when i login to Ubuntu all the icons & toolbars & taskbars are appearing in larger size.
my monitor size is 17" Samsung .
i dont understand how to solve the problem.
when i see on other systems its correctly detecting the monitor size and company.
but on my system its showing unknown for monitor company & the resolution 900 X 600 (16:10).
on my friend system the resolution is 1024 X 768(4:3). but on my system the max resolution is only 900 X 600 (16:10).
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Apr 4, 2010
I'm about to install Ubuntu on two 250-gigabyte hard drives in a RAID 1 array, but I'm confused about how to partition my hard drives. How much space should I give to each partition? How many partitions should I create and where should I mount them? (I should mention that Ubuntu will be the only OS on this array.)
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Apr 12, 2010
I am trying to install Ubuntu server edition on an old HP XT963 that recently came into my possession. I mainly just wanted to use it as a home file server and print server. I have been running ubuntu desktop on my laptop for a little under a year, but this is my first go at the server edition.
While ubuntu was installing it said "network autoconfiguration failed," I hit continue, thinking I could figure out how to configure it later. After lots of googling I still haven't figured out what exactly is wrong.
Code:
auto lo
iface lo inet loopack
after googling around I made it look like:
[Code]...
I would like to provide more information such as ifconfig and any other commands but I'm not exactly sure how I would do that without being able to copy/paste. I guess I would have the command dump the output to a file, but I'm not familiar with the -options this being my first time CLI-only.
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