Fedora Servers :: Process Of Updating All The Clients Nodes To The Same OS?
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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Sep 6, 2010
I've grown very fond of Gwibber, since the introduction of F13 as a Twitter-client. However since 5 daysGwibber is no longer updating the timeline. As the problem maintained, I also installed Pino and Twitux.But they seem to have the same problem. I've tried to uninstall and re-install them, but that didn't solve my problem.
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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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May 12, 2009
I'm working on CUPS server here now, I am new to the whole Fedora area, I'm starting to like it, tackling one service after the other. I have cups, which I don't recall installing but was there guess its a default. So I added a printer on my server, that was on a 10.0.1.1 block, added it as lpd://10.0.1.1/lab3printer. Ok that worked and printed from my server, but my problem is when other machines try to add the printer. I continue getting this problem
Alberto "recoverable: Network host '10.0.11.25' is busy; will retry in 30 seconds..."
On the computer it was added as printer lpd://10.0.11.25/alberto because my server has that IP and printer well named it alberto. I followed what this said with the xined.d [URL].
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May 17, 2010
I've done this before, maybe ten times. This time is different. I don't know why, but Samba will not allow any clients to connect.
I've done:
- installed samba
- setup the samba shares
- have a samba user/passwd
- authentication = users
- punched in the samba stuff for firewall
- workgroup is set right
What the heck? I cannot get any client to connect. Not even the server machine can connect to itself through a client. What am I missing here???
Just for the record, I'm trying to connect to \SERVER:
Code:
Code:
I removed a whole lot of comment lines in the config file.
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Jan 19, 2009
My brother and I want to set up a server off of which we would provide the processing power for several thin clients. Is it possible to serve the thin clients with images of Windows XP to run?
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Jan 24, 2009
Is there a way to use dhcpd to assign vpn clients their IP and configuration?
I'd like to have dhcpd listen on br0 (already set as 10.0.0.1) so that devices conecting through eth1 and tap0 (should I be using tun?) will get the same address pool.
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Aug 25, 2009
My server and clients (NFS and NIS) are in continuous attack via ssh. Somebody is trying to guess password and login, and making port 22 busy.What are different ways to stop this attack?I am thinking to block this ip in iptable but I have no good idea because I have not done this before. Any special consideration do I have to take while doing this thing? How is it done and which file does it modify?
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Jul 23, 2010
is it possible to create a pxe boot server on fedora for windows clients?
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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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Feb 16, 2011
My Linux server which is running my company website have been hacked. Today I saw a number of clients (customers) with some fun characters entries on my database. Access denial on really clients.
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Jul 27, 2011
I have configured router(192.168.1.2) to serve only one machine with IP - '192.168.1.6' and set up SQUID proxy on '192.168.1.6'. I have defined some rules(ACL) regarding connections to internet on SQUID proxy.
I changed the Gateway of rest of machine (192.168.1.60 - 192.168.1.69) from '192.168.1.2' to '192.168.1.6'.
The policies which I defined in SQUID is working properly but 'Linux Evolution mail' client is not fetching mails.
Is I have to do any other settings on 'Linux System' or 'Evolution mail client'.
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Feb 5, 2009
Could someone pls help me out on why my FC box (which is the Internet Gateway) is not updating AVG clients which are all XP OS.
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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 4, 2011
ran ubuntu tweak clean up on kernals and it failed to remove one. following this tried to search for updates and getting this error
[code]...
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Feb 14, 2011
I have OpenSuse 11.3 KDE installed in dual boot with Win 7. Have used Ubuntu in the past and remember that whenever I started my computer with Ubuntu, i had a black colored screen which showed various kernel options. So in short I was sure that the Ubuntu installation had updated itself. On the contrary, whenever I start Suse 11.3 KDE, it shows me just one option of Suse 2.6.34.7-0.7
I have doubts, is Suse up-to-date, and also there is mention of KDE 4.6 on kde.org website.
But my operating system information is as follows:
KDE: 4.4.4 (KDE 4.4.4) "release 3"
OS: Linux 2.6.34.7 -0.7 -default i686
System: openSUSE 11.3 (i586)
I have also seen that on 10th Mar 2011, Suse 11.4 will be realeased. Will update/ upgrade of this installation work in this direction?
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May 12, 2010
what is the correct process for updating an application installed via the './configure, make, make install' sequence?For example, I have an app checked out via a git repository, on which I run the 'make install' on to install. Then a few days later I run a git pull to update to the latest release, do I just run the same sequence again or should I 'make uninstall' first?
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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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Aug 26, 2009
when ever i give yum update am geting this error. failed to use search generator: failure:repodata/318b9912817ec3309c6defc47d79e878c52a21fd1457d191bb ff060fdb7f7f8d-primary.sqlite.bz2 from rpmfusion-free-updates: [Errno 256] No more mirrors to try. I was trying to install tomcat using yum. Is there any way i can install tomcat other than yum utility. I downloaded he zip folder for tomcat which i downloaded from apace tomcat site.
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May 6, 2010
I administrat a school in Denmark, with around 40 clients runnig xp pro and a windows 2003 server, but i read about the possibility of running a linux server, with thin clintes that can run from the server, if it has network pxe boot.
I was wondering if anybody now any links to a good how to page, on what is needed on the setup side of the server, and clients. To make it work. And i have to use my dhcp from the win 2003 server. Is that possible.
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Jul 28, 2010
Im having a problem with our pxe environment. We have around 200 clients per server to boot from tftp and when we hit 250 the service just freezes. So, our options are to either add more servers or move to a more robust protocol. Is this feasible?? How can clients boot from ftp?
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Jan 28, 2011
I install clonezilla onto ubuntu but I cant get the clients to boot and the steps i find in the tutorials don't really help or apply.
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Feb 17, 2011
I am trying to find some ideas on debugging clients and servers. For example, what would be -really great- is to
1. start a debugger with a server (running on a port)
2. start up the client (using a debugger).
Run the client and then trace the processing from the client side to the server side.
How can one accomplish this?
I have downloaded valgrid and Qt Creator - but not sure how one can use both.
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Sep 17, 2010
I have got a 10.4 LTS LTSP server running as i needed it should do.
When i boot-up one of the terminal it sees the DHCP and starts loading from the LTSP all working ok.... when it gets the login screen some of the terminals get the box on the screen to enter the user name and password. the other terminal dose not.
The work around i have got is that i have to click on the blank screen at the bottom left to get the "pick a session" button then i can login and can login as normal.
When all the clients login all is well, And works as if the system was loaded locally its fast and at the mow its reliable. The only thing that is not working as it should is the log in screen.
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Apr 14, 2010
I would like to know whether ldap can be used to authenticate wireless clients with my server.server and clients are connected to a wireless router and i am able to get wireless adapter work in my ubuntu. Is there any anything extra which is required or the openldap server will work for wireless clients?
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Apr 20, 2010
alright so i set up dhcp server and my clients are getting ip's, can ping each other, and can ping/ssh the server. but nowhere beyond that.
however if i ping an externel site, i get its IP addr, but no pings (100% loss)
im ripping my hair out over this. i know that iptables is right, but i dont know about dns
idk if this helps:
Code:
pavel@ubuntu-server:~$ cat /etc/network/interfaces
auto lo br0 eth0 eth1
iface lo inet loopback
#mapping hotplug
[Code].....
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Apr 24, 2010
I do not understand this command well. Yes, I have looked at man route and that whilst that gives lots of information about the switches I cannot see it in context. I have a server with two nics. One to the Internet (eth1) and one to the lan (eth0). I use pppoe and when it is running I get a virtual adapter appear in ifconfic called ppp0 which shows the public DNS and ISP session IP. I entered the command:
route add -host (gateway IP) dev eth1
and get the Internet to appear on the server. However, I do not get the Internet to the clients. I have turned off the firewall to be sure that this is not the problem.
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Apr 26, 2010
We have been using Ubuntu 8.04 with ltsp the server is Intel P4 with 2 GB Ram and the 8 client consist of either Atom or old P3 and P4. Now we want to increase the clients and want to upgrade to latest ubuntu 10.04.
I heard AMD does excellent job with LTSP but is it possible to have intel clients and AMD as a server. If not then which the best intel server I can have other than xenon (Bcoz of the price factor i dont want to go for that)
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Jun 4, 2010
On a Lucid server, dnsmasq is happily running DHCP together with a local DNS; although, in setting up NFS, I seem to have a small problem... I have /etc/exports referencing the hostname of the clients but these IPs change when the DHCP lease is renewed. Unless I restart NFS or run exportfs, I cannot mount the exports on my clients. I know that it would be good to make the all the addresses static; however, I was wondering whether there is another way to configure NFS such as possibly adding in a script to continually monitor /var/lib/misc/dnsmasq.leases and re-export accordingly?
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