Ubuntu :: Strange "nfs Server Not Responding Timed Out" On Workstartion?
Feb 23, 2010
I have set up nfs-kernel-server on my Debian Lenny server and nfs-common on my Ubuntu 9.10 workstation as described here. Everything is generally working just fine, except that every time, when I start my workstation from suspend-to-RAM after more than a couple of hours of suspension, I can not access the NFS-shares (nautilus or ls in a terminal just hangs), and /var/log/messages shows "nfs: server NAME-OF-SERVERnot responding, timed out".
The problem is definitely not the server, because all I need to do to get it working again, is "umount -f /mnt/NFS-SHARE" followed by "mount /mnt/NFS-SHARE", or just wait some time (around 10-15 minutes) and then everything is fine again. I always only suspend-to-RAM, I usually do not turn of the machine completely. I have no explanation for that issue, but it must have something to do with being in suspend-to-RAM for a certain time. Pretty weird!
Strangely I never had this problem with NFS shares from a server running the FreeBSD-based FreeNAS operating system. Should the NFS shares be unmounted before suspension, and mounted after resume? Can this be done automatically?
I have setup a Postfix system under Ubuntu server and everything works fine but I have seen 2 mails that stayed queued deferred in my mailqueue.
They can't be send because I received this :
Other mails are going out but these two stay there. Maybe someone could guide me where to change or look for solving this problem. I have a FQDN but do not have a static IP from where I run this mailserver.
I have SSH running on port 8662 and 22. I use 8662 for the outside world (eth0 which is 192.168 network) Here are the only lines I have changed in sshd_config:
Port 22 Port 8662 #Protocol 2,1
[code]....
BTW, ports forwarded on my firewall, checked and triple checked it.
I've been using synergy on Ubuntu 9.04 and windows xp.Synergy 1.3.1 on both machines.My problem is that the server keeps cutting out. It seems to happen a lot when I watch flash videos on the server machine (ubuntu). This is what the server side looks like:
Code:
NOTE: synergys.cpp,500: started server INFO: CServer.cpp,1141: screen "server" shape changed NOTE: CClientListener.cpp,127: accepted client connection
[code]....
I dont think I usually get disconnected when doing other tasks. Mostly only when watching flash videos. Sometimes it doesnt automatically reconnect, and I have to kill synergys and restart it.
You do not appear to be using the NVIDIA X driver. edit your X configuration file (just run `nvidia-xconfig` as root), and restart the X server.
Last night did a shutdown -h +120 which I have done regularly without problems. Only difference was there were some updates to go on which I said Restart later to.
Now my NVIDIA driver is screwed - as in I can't get my dual screens working. I have tried: sudo nvidia-config as suggested but not sure what it means by restart X server - PC restarted? No difference.
I have been trying to solve this problem for two days now looking at various forums and websites but can't really figure out what's going on here.I have setup postfix on my ubuntu and I can send emails using "telnet localhost 25" and the ehlo thingy. Apache can also send emails. My problem is with incoming emails. When I try to send an email (through Gmail) I get the following error message:
Code: Delivery to the following recipient has been delayed: root@example.com
I have 2 different networks :the first one is gateway machine (eth0), and the second is a private machine (eth1). So, I've configured the iptables and forwarding stuff and when I try to ping [url]..... on the gateway machine, it works, while it doesn't work on the private network. Note: I am using VmWare 7, CentOS 5.
I could say that the problem in DNS:because when I use this command in the private network machine: [url]...., it says connection timed out; no servers could be reached ,while in the public one, it works properly.....
Linux printing appeared to be working fine up until yesterday. Today typing lpq gives the following: lpq Printer 'sdst@other.domain' - cannot open connection - Connection timed out Make sure LPD server is running on the server
The /etc/cups/printers.conf file is properly set, the printers appear in localhost:631 and they are printing test pages. However, all command line print commands seem to be trying to print to sdst@other.domain I don't know why printers.conf is being ignored and why and how sdst@other.domain was added. Seems like it might have been auto-discovered?
# dit: sdst@other.domain was mentioned in /usr/local/etc/lpd.conf I'm not sure why lpd.conf is being used instead of /etc/cups/printers.conf
I am not able to connect to remote server through secureCRT . my local team has said that server is working fine . but I am not able to connect it remotely . what more i can do to connect it to server
I've ben punding myhead on this issue. I've setup a new postifx server on rhel5. After editing the needed entries, i can't seem to send any outbound mails to yahoo or any other domains.My postconf -n is as follows:
I am trying to confiugre sendmail client and server environment. A very simple environment. On server side I configured sendmail and relaying the requests from other linux machines. On a server end emails are going out fine but on client side its not working with Deffered message in log. I tried to find any solution online but couldnt get any exact info to sort out this issue.On server side there is a entry of client machine in /etc/mail/access and I created access.db as well with make hash command.Is there something on server end that is not responding? or if I am doing something wrong please point out.
I have a box running, within this box I serve approx 18 sites. Starting few months ago. the memory usage seems to climbs up everyday. I've check my cron, and I don't have any cron that runs everyday (but hourly cron that only did checking external server's availability via wget). The only new thing that I've add was a backup script to dump mysql database, which occurs weekly. (I can post it's script if needed).
Here is my weekly memory chart [url]
And lately things are getting worse, everytime I did this:
Code:
At least one of my site returns with timeout. When I visit the site using my browser, the site is actually reachable but it takes about 20 seconds to load (my wget use timeout 10 seconds so it will surely returns with timeout). Each time one or two sites downs randomly. But about two-three small sites dominates - their chance to get slowed seems to be higher than the rest 15 sites.
Is there any way I can detect the problem? I really don't have any idea...
I've got a machine running Ubuntu Server that is on several VLANs. Each VLAN has its own subnet and the server has an address on each subnet. The switches are set to allow tagged traffic to the server for each VLAN that it is on. Switch ports ending with workstations are given untagged ports on whatever VLAN is appropriate. Workstations are given addresses on a subnet for each VLAN via DHCP. All this works great and hosts on any subnet/VLAN can access the server as normal via its address on that subnet/VLAN.
Accessing the machine by its address on a non-local subnet is where I run into a problem. Inter-subnet traffic has to go through a router, which has been set up appropriately. Running tcpdump on the server and pinging it from a workstation on a subnet, using its address on a different subnet, shows the server receives the ping, but sends no response:
Code: sudo tcpdump -i vlan4 -n tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
I am connecting servers using NFS4 the shared directories are on servers running Debian 4 while the one who read from them is Debian 5.0.3. The problem is one of these shared servers suddenly stop responding and you cannot list it from Debian 5 server, also df hang, and the web application that is using it does not respond to requests that use this shared directory since it is blocked. Then the load on the server start to increase until the server cannot respond (over 90). I have found many entries in the syslog that refer to this like:
ma25555 kernel: [1200285.732919] nfs: server 10.xxx.xxx.xxx not responding, still trying Dec 31 08:16:33 ma25555 kernel: [1200289.815378] INFO: task java:9702 blocked for more than 120 seconds. Dec 31 08:16:33 ma25555 kernel: [1200289.835249] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. code....
I have tried the connection between the 2 servers using ping for one day and all are OK (zero lost)
There are 3 other servers that are running Debian 4 and are working fine.
I've been trying to ssh out of my home network to school computers and I keep getting:
ssh: connect to host sage.math.washington.edu port 22: Connection timed out
I've tried this on my machine (running Ubuntu 10.04) and on a windows 7 machine (using putty). I have been successful ssh'ing to this machine using either of the laptops from every other network I've tried, so I'm pretty sure it's something about my home network.
5.5 (64bit). My server goes into non responding state where I can't telnet, ftp or ssh server whereas PING is the only thing which works at that time. I need to hard reboot server to get it back online. This is happening very frequently in fact yesterday and today server went inaccessible. which log file should I look into to find out the reasons of this inaccessibility?
I recently decided to install Ubuntu and I went through all of the steps to set up a subversion server using svnserve. It all works except for one thing: it stops responding to remote computers after a while.I have the server on a 4 port wireless router/switch in my dorm room. I set up port forwarding so that the server receives all traic over the correct ports. The subversion server AND the default http server on Ubuntu work fine always as long as I access them from a computer connected to the switch in my room.The problem is that if I try to access it from anywhere else, it won't respond at all unless it has been accessed by a computer on the switch recently (something like 30-60 minutes). So to fix it I have to go back to my room and access it from a computer on the switch. Then it will work from anywhere for another 30-60 minutes.
I am getting an var log error while mounting remote file system to the client side as:- Kernel:NFS: Server 10.47.152.70 is not responding, still trying.
The issue is client side machine is getting hang, after i mount the file system.
I have exported the file system as ext3 at the server side using Veritas Cluster. And importing it on the client side by including the shared directory in fstab.
i m experiencing some problems connecting via ssh two ubuntu workstation: a ssh client and a ssh server The goal of that is to run from local client computer some X applications on the remote server machine
i have configured both client and server for X11forwarding (i think) properly Infact when i launch xeyes on the client i see the X app running
the problem is for all other X apps. For example when i run xclock, nothing happens on the local PC the prompt continues blinking without any reponse, no windows opens and the strangest thing, the shell is stucked. No possible to interrupt with [CTRL]+c the onyl thing to do is close the shell window
Starting in verbose mode (debug), X11 seems works correct , it says x11 confirm as last message .
I was checking my server and found a /net directory with nothing visible inside. The mysterious directory is /net and I checked to make sure nothing was mounted to it: [root@mysql /]# mount /dev/sda1 on / type ext3 (rw) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) tmpfs on /dev/shm type tmpfs (rw) none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw) sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
OpenSSH_5.3p1 Debian-3ubuntu4, OpenSSL 0.9.8k 25 Mar 2009 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to server ["address"] port 22. debug1: connect to address "address" port 22: Connection timed out ssh: connect to host "server" port 22: Connection timed out
I suppose this is because I am connecting from a public institute where there is a firewall that is blocking an outbound connection on port 22.Is there anyway I can bypass the firewall using the internet ?
I have a Mac G3 and Squeeze 2.6.32-5-686 on an ethernet wired. Works fine with Lenny kde but only in one direction with squeeze kde4. Mac pings squeeze box ok but response is "server may be down or offline". Squeeze connects to Mac normally. Squeeze installed with server option. How do I enable eth0? I need some direction
Currently have a problem with my LTSP server when using a gigabit switch with a megabit thin client.I am using K12LTSP with Fedora 9.The thin clients get most of the way through booting up then I get error messages saying:nfs: server 172.31.6.1 not responding, still trying.I don't get this problem if I use a 100 meg switch though.I have found several forum posts on the internet which all seem to point to the following webpage with a solution:However, when I make the recommended changes It doesnt make a difference.Below is an example of the default file located at /var/lib/tftpboot/ltsp/i386/pxelinux.cfg with its default settings:
I have deployed proxy server in my office about a month ago. I have about 7-8 client accessing it through port 3128. After some days of deployment, my server started creating problems. Some clients were not able to access proxy while other clients were accessing it. The error message which I found in cache.log was:
Code: WARNING: Closing client 192.168.2.99 connection due to lifetime timeout
In this way it was disconnecting clients randomly. The problem resolves when I restart proxy server
Im sending my cache.log file
Code: Last login: Mon Nov 15 12:37:29 2010 from 192.168.2.2 [root@localhost ~]# cat /var/log/squid/cache.log 2010/11/15 08:11:49| storeDirWriteCleanLogs: Starting... 2010/11/15 08:11:49| Finished. Wrote 57740 entries.
after a update to 5.3 from 5.2 via the built in updater the system stops responding to visitors from the outside, http that is, but heres the odd part, if i say run firefox on the server the connection works also for some reason if i'm on the network with my own computer the connection seems to stay open but as soon as i stop using these the server seems to drop the conenctions, but as i said as soon as i go via my comp to the server via say ie it works right away.
this i tried yesterday:did a cold boot to see if some update had problems and actually needed a reboot even if the updater didn't say, after it started the connection seemed to be open for a good while, and not untill this morning from a outside source the connection is droped again, not been on my comp nor logged on on the server today yet.the install only has on it what i got from the dvd, and as far as i know it has all the updates on it since 5.3 came out.my network is built up like this:
