CentOS 5 Server :: VM Clients Keep Getting Disconnected?
Apr 4, 2011
I have a server (called NAS) that shares out /public, and I also have this same server running KVM with some VM's. I am setting up the first VM now, and one of the things it does is download torrents onto the share. I am connecting it via "mount -t smbfs //nas/public /mnt/nas" from the VM on the host and it seems to work fine. However whenever I add a torrent to the queue on the VM to download, all downloads stop and seem to be disconnected. I can restart them after a few seconds, but they will stop after a few minutes with another disconnect error. I have the network interface bridged, so I thought it was talking directly to the host.
I just installed DarwinStreamingServer. All seems normal in admin panel But everytime I try to play the file using QTime player...the play button quickly turn into "Play" again as I push it. Then I try to open it via my nokia phone, I got message "Disconnected" as soon as it connected to the server.
I have tftp-server running on Centos 5. Clients which are on the same subnet as the server are able to get and put without problems. I have a client that is across the internet that is having trouble getting files from my tftp server. A tcpdump reveals that the client is requesting the same file over and over again. In /var/log/messages, I am see the following error repeated over and over until the client finally gives up.
localhost in.tftpd[12727]: tftpd: read: No route to host
At my work, we have several clients (outside clients) that have an FTP login to our FTP Server. Their login then leads them to their home FTP folder. The FTP server is currently a Win2003 box. Because we have so many clients, we would like to implement some form of WebGui that would allow each client to manage their own FTP home folder and user info, such as resetting their password if they lost it.
Is there anything like this available in linux that would provide us with that kind of control/usability?
Where 'xxx' is a date/time string down to the second.
Each subdir entry contains a number of files, depending on load at the time.
What we see happening is that a subdir will appear empty from a client (ls -la shows . and .. ) but an rmdir will fail with a 'directory not empty' error. From all 7 clients (mix of Centos 4 and 5). However on the server the files are visible. If we 'touch' the files the clients will then pick them up and process them.
It doesn't appear that waiting any amount of time will make the files visible (we've waited 8 hours while testing).
We've tried different mount options, NFS4, etc. Nothing got rid of the issue. Changing one server to use CIFS however solved it. So it appears to be some bug in NFS.
The problem appears to be intermittent and random, we can go hours without seeing it, or minutes. I'd say it affects fare less then 1% of the files written.
I can't seem to get the X server to allow access from clients on other hosts. (I know, not exactly a network problem, but. I made the change in /usr/share/gdm/defaults.conf to be : DisallowTCP=false
and this worked on another CentOS system, but it hasn't fixed it on this one. What other things could prevent other clients from connecting to the X server? From the local host, I get :
Warning: Tried to connect to session manager, Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed although the client DOES actually create the window and work! So, maybe this message is a clue.
From the remote host, I get : Error: Can't open display: 10.10.1.20:0.0 Which is not terribly informative. Is there a log somewhere which details why a connect request was denied? The files in /var/log/gdm are not very informative.
Don't work nslookup from clients guest OS.I have LinuxMint 7 and I'm installed VirtualBox on her. I created three guests OS. Two CentOS and XP
Name The first CentOS linux1.starline.ca The second CentOS centos.starline.ca The third XP xp2.starline.ca[code].....
On the clients guest OS nslookup don't work. It write : timed out; no servers could be reached .What is going on? Why nslookup don't work from clients guest OS?On client machine in the file /etc/resolv.conf have record ameserver 168.135.88.2
i have openldap server with phpldapadmin as a gui, i'm gonna use the ldap server just for address book.you can see in the picture how i built my ldap db.
I have setup openldap and samba for authenticating Windows and Linux clients on my server. They are working fine. Windows users are getting authenticated through server as Primary Domain Controller and Linux clients directly from Openldap directory. But I have little problem that is I want to mount home folders created on server to be available on clients so clients get a centralized storage with some quota on both Linux and Windows clients. Can you help me please how can I do that.
I'm new to Centos 5 (and Linux) and, after installing Centos, I configured Samba, Apche, ... w/o problems (through interactive interface). My problem is tha t I need to use DHCP (all our clients use dynamic IP addresses for the ease) but I don't find dhcpd ... nor the sample config file(s).
Note : the new server I intend to use is actually connected on a LAN with an 'old' DHCP server (still under W2K server), is this the reason why I can't find/activate dhcp on my new machine ???
I have openvpn tunnel setup between two CentOS servers. One of the CentOS servers also acts as a DHCP server for some client computers.
Server A= OpenVPN server Server B= OpenVPN client (connects to Server A with OpenVPN)
The two CentOS servers can ping each other (172.16.0.0/24) via the tun0.
However, client computer connected to Server B (DHCP server) can't reach 172.16.0.1 (which is the OpenVPN server).
I think I am missing some routing in my "ip route show". Following is the full picture:
What command can I issue to get this fixed? something along ip route add?
There is no firewall service on both end. service iptables stop! I can't bridge eth1 and tun0 as DHCP server might mess up the other side. I can't do a push of "redirect-gateway def1" because then clients loose their IP as they send DHCP requests to Server A.
I logged on to one of my servers and ran a yum update, while the update was in progress my SSH connection got disconnected.
I logged in through a new connection when connectivity was restored and looked at running processes. It looked like yum was hung so I killed it (big mistake and one I won't repeat).
Now, when I try and run yum, I get the following:
Quote:
yum update: There was a problem importing one of the Python modules required to run yum. The error leading to this problem was:
Please install a package which provides this module, or verify that the module is installed correctly.
It's possible that the above module doesn't match the current version of Python, which is:
If you cannot solve this problem yourself, please go to the yum faq at:[url]
I have tried hunting around for the correct version of libelf without much luck.
Is there anything I can do to get yum working again?
the start up fails, but a process is left running. these machines are running the latest stable version of Centos 5, and we have been "messing" with the firewall. When I'm logged on through a console, I get error messages that lockd can not contact the server even though the nfs mounted home directories work fine.
Tutorial for setting up a domain server, dns server, ldap, mail server, firewall and proxy with centos and how can I join ubuntu clients to the domain?
we can't get the clients in our lab to do a kickstart install. we're doing the install by booting from the Centos 5.3 net install cd and anaconda starts, but terminates abnormally reporting a SIGSEGV fault. Interestingly, attempts at doing an install from a CD and without the network connection results in this error:
X11TransSocketINETConnect() can't get address for localhost:6001. Temporary failure in name resolution.
i want to configure an Open LDAP server in Ubuntu....and also want it to connect to its clients, i have two machines for testing,one for client & one for server, i followed the tutorials on ubuntu documentation,but did not succeed in making either the client or the server,
i have Centos 5.3 installed with TXT mode i want to create and share one folder to be accesible to me from the network, to download and share files into it with my Host, i created the folder but dont know how to share it,
In short we are booting Centos 5.4 over PXE to a bunch of diskless clients. Once they are booted - we can login (as local root account) and RDP to windows machines using rdesktop as we require.
The next step of the project is to get user authentication to the Windows Domain controller working for the PXE image.
To do so - we continued with our physical install of Centos 5.4 (used to create the pxe image with rsync as per the wiki page for diskless clients) by following through this page. AD auth works perfect on this box (it has a local HDD install of centos obviously).
Once we rsync'd the changes over to the pxeboot location - and rebooted one of the diskless pxe clients - we get issues.
The issue is that winbind seems to start - however the file "/etc/samba/secrets.tdb" cant be read. We tried removing this file that the PXE clients use and recreating it using
I installed syslog-ng so I can receive remote logs. this is working however since I disabled syslog on my syslog-ng server I am not logging in /var/log/messages cron and some others.locally)I know this is because my syslog-ng.conf only references remote and not local.How can I edit the syslog-ng.conf file so that I can receive remote and local? I tried this however when adding in portions of the default config, I only receive local and not remote logs anymore. I am forwarding my config.
# syslog-ng configuration file. # # This should behave pretty much like the original syslog on RedHat. But
I am stepping into Linux world ...and I have chosen CentOS. I have installed CentOS 5.5 on a dedicated IBM server successfully. My server has two network cards. I have configured eth0 for lease line internet connection with a live IP (113.xxx.xxx.xxx) and eth1 for local LAN with a static IP (192.168.0.1).
Now, 1. DHCP is working fine and I can access the server from my Windows XP clients. 2. I can access the server with SSH client PuTTY from home ( with the live IP ) and from the local LAN (with static IP 192.168.0.1) 3. I can access my shared server directory 'public' from my XP clients 4. Internet is working on sever and I have updated the server with yum update.
But, I cannot access internet from my XP clients machines.
I read "The Definitive Guide to CentOS" and tweaked the config files in different ways but it did not help. now after two sleepless nights I am here as my last hope.
I admit, I am not aware of every linux terms and commands, but I am getting into it. code...
I just installed SLES 11.2 X86_64 and have SMB Server started after adding 2 lines to smb.conf:1. NTMLv2 = Yes2. name resolve order = wins bcast host lmhostsThere are also 02 new DWORD lines I add to Win7 clientsHKEY_LOCAL_MACHINESystemCurrentControlSetServicesLanManWorkstationParameters 1.DomainCompatibilityMode = 12. DNSNameResolutionRequired = 0Of course a few number of modifications I made from Yast to enable SMB Server and Client, and bcast as well. Now I am able to join my Linux Domain without error at first reboot from win7, but it seems spending a long time about 30 secs for auth. even I test on a very fast network system, all with core quad 3GHZ CPU and 4GB DDR2I would like to mention here that before I made the above changes I did a lot of different modifications onto my win7 clients (I found many suggestions online), and all seems mess up and never work; Then I had to reinstall win7 from scratch and just add 02 lines as above, but it works.
what is the best way here? I have like 5 servers, and I want my clients to access each of them, so in case 1 server is down, they can access remaining servers. Also, it will work like user1 chooses the server number and is connecting to a central database, then reply is OK, and he can connect to the server number he wished.
In my network the client systems access internet through my server which has ubuntu 9.10 server edition in it.I gave my server's ip address as name server's address in /etc/resolv.conf file in the client systems. And i have assigned static ip to my systems. i have not configured squid in my server.I just want to know whether the website acessed by the client systems will be registered in the server or not, with the coresponding ip addresses.
i have checked system log file in server,but i can't find any ip address entry of the client systems in it.which file i have to actually check, or should i need to configure any extra things to monitor the clients web history in server.
I'm presently writing software to keep my system time from drifting, it uses an external clock device.To verify it's accuracy I'm running ntpd as a server, and have another server monior the first as a client. This allows me to compare the offset with other 'valid' time servers.The problem is that the monitoring client keeps synchronising with my development server. How can I configure either the dev. server or the client so that it's time won't be selected as a good time source?The ntp.conf on the dev. server looks like:
Code: server 127.127.1.0 # local clock fudge 127.127.1.0 stratum 10
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?
