Ubuntu Servers :: Drop Current Debian VM Nodes In Favor Of 10.04?
Jun 23, 2010
Now that Ubuntu is at a LTS stage with Lucid and is easier to install PV in XenServer, I have been wanting to drop my current debian VM nodes in favor of Ubuntu 10.04. So far I have DRBD8 and OCFS2 all working nicely as primary/primary and I am on the next stage of my setup by installing ldirectord and heartbeat. Can anyone shed some light on heartbeat-gui (hb_gui) as it no longer seems to be in the repositories (since Jaunty)?[URL].. I understand that Lucid now uses pacemaker as part of a clustering suite but I have no idea if I really need it. I really liked being able to run hb_gui and logging into the heartbeat cluster to manage resources via point and click so if anyone has any hints on replacements or newer preferred methods to accomplish the same tasks via point-n-click,
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May 7, 2011
if i can use Cherokee for my http service rather than Apache2 ? How do i stop apache2 from auto starting at reboot time ?
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Mar 3, 2010
I'm trying to work with a project manager and some hardware guys and all of us are trying to get a grasp on the UEC.
1. Can a VM span multiple nodes?
2. If a website scales beyond 100% CPU on a node, does it automatically spill over to another node and start using processing power there?
3. Do I have to rewrite the code of my web app (such as WordPress) so that it works in a private cloud?
4. Does KVM support virtual memory such that when I run out of RAM it uses paging?
5. How is UEC any different than me bringing up several servers with several VMs inside, and then moving VMs around as I need? Is it really a cloud where the VMs exist in a cloud, not necessarily a node?
6. If I power off a node while it's hot, how can I assure myself that the data will be okay?
7. Do I want to use SCSI attached RAID, or NAS, or NFS? We're simply trying to host thousands of blogs and LAMP sites in a way that we can handle spike loads.
8. Do I attach the disk volumes to the cluster controller and then run a command such that the nodes can mount those virtual volumes?
9. Do I need to run another command on the VMs to mount volumes that the nodes can see?
10. What is the role of the storage controller and how is it separate from the cluster controller?
11. How many systems, minimum, do we need to get this tested out?
12. For testing purposes, can I install UEC on an Intel P4 server and then a node on Intel P3 server -- even with some limitations?
13. Let's imagine I have 5 node servers, and one catches fire and is a total loss. Can I get those VMs back and get that data back? What would have to be the proper config to make that happen?
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Mar 11, 2010
I want to connect two systems in clustering concept. am new for clustering configuration. I have installed ubuntu 9.10 server edition in two system. what do to the next step to configure clustering in ubuntu 9.10 server edition.
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Sep 16, 2009
I'm putting a server together and have run into a boot up problem. (I thought about putting this in the server forum, but it might be a more generic problem that others have seen and know how to rectify.) The install seems to have gone just fine. I have the /boot partition on an internal IDE drive. The rest of that drive and another are mirrored in a Raid0 configuration (using the Linux software to do that) for data storage. The swap partition is a part of the Raid5 SCSI array that also has the / (root) partition on it.
After installation it would not finish the booting process. I suspected that GRUB didn't like all the Raid arrays and such, but it seems to be fine. I can say that because the machine will boot into rescue mode with the GUI splash screen and I have access to the whole directory tree. I have already searched on-line and following prudent advice, ran the yum update while in the chroot /mnt/sysimage mode. That only took overnight to download and most of this morning to complete. Still no dice. Used vim to delete the rhgb quiet commands in the grub.conf file so I could see where the kernel seems to be hanging.
So right after the "Creating initial device nodes" is a line about my generic PS2 wheel mouse. So I tried a USB mouse. Got more output so tried swapping out to a USB keyboard. Got a little further with more information about input devices, but still stops. Also, I tried a PCI video card just to make sure the onboard video wasn't the problem - no change. So, if someone in the Fedora community knows what loads up or is configured right after the mouse and keyboard, I might be able to figure out what's causing the computer to hang during the boot process.
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Jun 22, 2011
I'm having a problem with NFS. I'm trying to mount /home, which is on the server, to the client nodes. The server is currently running FC14 (64 bit) and I'm in the process of updating all the clients nodes to the same OS. Currently, all the client nodes are running FC8 (32 bit) and are capable of mounting /home on the server. However, the one client node that I have updated to FC14 is having problems mounting /home. I can ssh to the node with no problem however I get the following message:
Could not chdir to home directory /home/myuserid: Permission denied. Now, if I excute the following command: "sudo mount -a" I get no errors and now I can see my home directory.
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Jun 17, 2010
I ise debian lenny on both server and nodes. Nodes are in sence of drbl drbl project.
So, my sendmail on server works well but on nodes in syslog i see:
Code:
Configuration of sendmail on server and nodes is same and it is:
Code:
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Jan 12, 2010
what kind of network between cloud controller and nodes, is required for a proper cloud installation? I mean, Does all machines needs to be in same network, in same lan, or may be in MAN or WAN ? how much should be network throughput? 1Mbit/sec , 10Mbit per sec, or 1Gbit/sec? I ask because I need to know the possibility of running nodes on different locations.
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May 5, 2011
I've been googling this for a while now, and trying different examples, like:
iptables -A INPUT -s 3.2.1.0 -j DROP
iptables -A INPUT -s 3.2.1.0/24 -j DROP
service iptables restart
[code]....
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Nov 25, 2009
I'm using them to make a simple firewall on the girlfriends computer that is directly connected to the Internet. I wish to block everything except for a SSH port for me to admin with, and normal use things like a web browser. I grabbed an old template for the config and modified as needed. I'm getting an error that I'm not sure what is causing it. it is saying all incoming packets on any device is accepted. Or since there are explicit rules for eth0, that lines just means for any other device, which in her case there are none, so ends up meaning nothing?
[code]...
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Feb 1, 2011
What is the reason to drop Xdialog from the new release; is any replacement on the horizon? (beside zenity that is really crippled version of Xdialog).
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Sep 11, 2015
I would like to log and drop outgoing connection attempts, but the log is not showing the destination IPs.I have the following Iptable rules for my browser:
Code: Select alliptables -N LOGGING
iptables -A OUTPUT -j LOGGING
iptables -A LOGGING -j LOG --log-prefix "browser connections: " --log-level 6
iptables -A LOGGING -j DROP
Only after removing the DROP line it works.
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Feb 10, 2011
how can i drop my email address from bug report in the debian bug report system?
[URL]
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Dec 28, 2015
Using Linux 4.3.0-1-686-pae #1 SMP Debian 4.3.3-2 (2015-12-17) i686 GNU/Linux (Debian Stretch)
Also using XFCE
When using mouse to drag files from one folder to another (to move, not copy), it frequently crashes thunar.
This has been going on for a couple of months now, despite getting the usual upgrades.
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Jul 29, 2011
On Windows, I can drop file on batch script file, then dropped file is accepted as script parameter and script is automatically executed. Trying the same in Nautilus it seems like not possible.Is there some other way of using this approach in Debian?I hope it's clear what I'm after - I don't want to write Nautilus scripts as workaround and want to avoid: - opening terminal - cd to bash script - type script name andmeter file then executeinstead I would like already mentioned, drop filename expected as parameter to bash script, and then script to execute automatically.
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Jan 3, 2011
I have an MD3000 storage attached to dell server via sas cables, running ubuntu server.
the kernel keeps throwing these messages every other second on the console, but the drives from MD are fully accessible.
Jan 3 12:04:24 node2 kernel: [71041.035822] sd 5:0:1:0: [sde] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Jan 3 12:04:24 node2 kernel: [71041.035828] sd 5:0:1:0: [sde] Sense Key : Illegal Request [current]
Jan 3 12:04:24 node2 kernel: [71041.035833] sd 5:0:1:0: [sde] <<vendor>> ASC=0x94 ASCQ=0x1ASC=0x94 ASCQ=0x1
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Feb 9, 2011
I have Ubuntu Server 10.04 Lucid (LTS) installed on my server (EC2 instance). I'd like to install Memcached on it. When I type "sudo apt-get install memcached" I get version 1.4.2-1ubuntu3 installed.
I know there's a newer version 1.4.5 and looking at [URL]..I found it's available in the newer version of Ubuntu (Maverick). Question: is it possible to get the newer version 1.4.5 using apt-get on my current server?
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Feb 13, 2010
I need to downgrade curl (newest version has a bug I can't get around) and I'm not exactly sure how. I have removed curl (sudo apt-get remove php-curl), and downloaded and installed (./configure, make, make install) the version I need and everything looks fine for that. However, my phpinfo page doesn't show curl support anymore, so I assume I need to recompile php with curl support. My question is, how do I recompile php with all the current settings it has now? I used apt-get to install it with a bunch of other packages, so I'm not really sure what arguments to use when I recompile it. Is there a way to print the current settings?
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Aug 17, 2010
I'm running 10.04 64-bit diskless on ESXi, installed as a minimal virtual machine. I want this server to access an iSCSI drive. The machine can view the iSCSI shares with iscsiadm, and can even log into the drive. When I do an iSCSI login, this appears in /var/log/messages:
Aug 17 11:08:21 ubuntutest kernel: [1123295.329972] scsi4 : iSCSI Initiator over TCP/IP
So, it appears that open-iSCSI is working correctly. But no new /dev/sd* nodes appear, and nothing new appears in /dev/disk/by-path. I'd expect to see /dev/disk/by-path/ip-XXXXXXXXX. fdisk -l shows nothing but the boot drive. My guess is that the "minimal kernel" doesn't include some necessary module or driver.
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Oct 22, 2010
How to set the anchor node in NS2? How to define the channel propagation model as Log Normal Shadowing instead of two ray ground reflection model in NS2?
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Jul 12, 2011
I have a xml file and I read it within a php file with XML dom. This is the node structure of my xml file :
<Root><name></name>
<surname></surname>
<ID></ID>
<department></department>
[code]....
In the comment line, I've got the parent node of the current node. Parent node is "User" node. I would like to obtain the children of this parent node, say "name","surname " etc. How can I do this? Is there any function such as : "$parent_nodes->bringChildren('name')".
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Dec 7, 2010
I am going to dual boot debian and my current maverick. Is it possible for debian and ubuntu to share my existing seperate /home partition?
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Feb 5, 2010
i want to add keys to the sensor nodes. Hence i want to know whether there is any parameter for key storage in senor nodes
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Feb 7, 2011
i need to discover all network nodes and their ips is their a way to do it, then if i need to discover certain nodes which runs certain program. I'm using Fedora14 and FreeBSD
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Mar 16, 2010
I have a cluster script (CentOS 5.4) and I need a UPS for a shutdown. It should look like this ... The first node must wait until the second node has completed several actions and has been completely shut down. So I need a script with a shutdown wait until the other node is ... I was thinking of a test using ping. Alternatively, I would also have an IPMI interface. However, the "pause" may last a maximum of 10 minutes ... Then the wait must be ended.
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Jul 1, 2010
I am setting up a computing cluster in my lab, as below. all the "eth0" IP addresses are static (for cluster communication) and the "eth1" of the front node is the only one connected to the internet through lab's DHCP server (which is connected to a centralized computer center in the university). The thing I wish to do is to do some sort of IP masquerading to enable all the nodes to have internet access. I actually google around and read some books. The similar things I came across is setting rules in iptables but I did not manage to get any of them working. I am using Ubuntu Lucid 64-bit on all machine.
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Jan 29, 2011
How can I generate a list of all current connections in the form ofhttp://rtmp://and the like?sitting behind a netgear router.
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Jul 15, 2011
I'm in the process of swapping out my current HDD with a SSD. Are there any configurations that need to be made after a fresh install? If anyone currently have SSD and running linux, I'd like to here your experience and whether or not you have/had issues.
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Jun 20, 2010
I currently have a server setup in a perfect way for my specific network. Is there a way that I can mirror the server EXACTLY to a CD that will install all my configurations and the like upon CD boot?
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Dec 8, 2010
In trying to help our office modernize its IT infrastructure, one of the key components is maintaing our server. We have around 50-60 people who need access to a local server primarily for secure general file storage. These employees are geographically dispersed. We currently use some(?) version of Windows Server which is maintained and updated by a IT company we keep on retainer. After doing some very basic research on Ubuntu Server, I would like to try and incorporate a pilot program utilizing the Ubuntu Server software.I was successful in installing Ubuntu Server on an unused PC that I put a clean hard drive in. I have been following the direction of the Official Ubuntu Server manual to assist in the server setup, and this has progressed my cause up to a point.
Can I run an Ubuntu Server alongside our current Windows server without bring everything to a screeching halt? Additionally, I am the only mac computer in an office filled with varying version of windows. I have begun to configure samba but need some direction from the community as to updating the workgroup so my mac can connect to the Ubuntu Server. What do I need to put in the workgroup part of the /etc/samba/smb.conf directory?I have no doubt there will be face palms by the community after reading this thread, but I am trying my best to teach myself the Ubuntu way.
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