Ubuntu :: Server Just Dies - Won't Respond To SSH Or Anything Else ?
Jul 4, 2011
I have two servers, both running Ubuntu 11.04 Server. One is a web server, running only a LAMP stack and openssh-server. The other is running server daemons for TeamSpeak and Minecraft. Today, the game server just went down. I can access the LAN by using SSH to connect to the web server, and ping it from there. However, it won't respond to SSH or anything else. The server is a few kilometers from here, so I will be going there tomorrow.
This happened once before, probably about a month ago or something. That time, the web server was running just fine, but the game server was powered off. I thought there had been a power disruption, because when I checked the BIOS settings of the game server, it wasn't set to resume after AC power loss. The web server was set to do this, so it made sense that it would be up and running again after a brief power loss. There were also some news reports about power disruptions in my area.
The thing is, I changed the BIOS settings of the game server to make sure this wouldn't happen again. When I go there tomorrow, I will bring the server back up. However, I would like to know what caused this so that I may prevent it from occurring again. Is there a logfile or something that I can check tomorrow to find the problem?
Am trying to set up a new system but am getting some strange behavoir. I've administered an Irix system before. I have opensuse 11.3 installed with gnome running. When i enter a bad user id in the windows login screen, the bad authentication causes the x window manager to crash and leaves the system in the ascii terminal mode login. I then have to login as root and do an init 3 , then init 5 to get the x server started again an get the windows login started. Has any one seen this behavior before and how can i fix this. Been hunting through /etc/X11/xdm to see what startup scripts could be causing this.
i have a ubuntu 10 server (as server LAMP) , i was trying to repair a couple of unix files with fsck command on directory, thinking it would apply only that directory, but it affected all system, in th end it says: "file system has changes, restart ubuntu", then services go down, after some directories fail, restart funtion do anything... i switched on again, but at start show error.
I got another ubuntu and installed damaged hard disc, but, i can see file sytem, i has been trying to repaired with TestDisk but i can't...
i want to recover mysql database at least, but a don't know what to do.... how a fsck get damaged SO
We have a NAS application which can be accessed by both HTTP and HTTPS connections.
The issue we are facing is that the tcp server instance that initiates the HTTP access dies after a few hours of inactivity(the NAS application was kept idle for around 10 hours). However, the tcpserver that launches HTTPS connections remained running.So the connection failed through HTTP access but the connection succeeded through HTTPS access.
The converse has also been observed where the tcpserver for HTTPS is dead but tcpserver for HTTP is running.
The version of tcpserver that we are using here is ucspi-tcp-0.88.tar.gz.
I have the following queries:
a)Has anyone faced the same problem before?
b)Is it an issue with this package version of tcpserver ?
c)Will upgrading to newer versions of tcpserver bail me out of the issue?
d)Also, could anyone let me know what are the possible causes for the tcpserver to die ?
When I logout on kubuntu my xserver dies and I have to start x again manually from console. Im not to kubuntu 10.10 and I tried to check out /etc/X11/xorg.conf but its not there. on reboot xserver starts automatically. I am using opensource drivers and video card is radeon x700 pro
Got a Zimbra server FOSS edition running on CentOS5.5. Everything was running fine until couple of days just found out that web administration interface just does not give the proper status. Web console says that none of the services are running which infact is not true. Only service that is not running is logger. This is the zmcontrol status output
Just the logger service is not running all the others are. But web admin interface shows all are stopped. Also it can be seen that zmlogswatchctl is not running. Starting it manually does not do any good. It does not start and it dies out by itself.I tried to google and found a couple of bugs related to logger and web interface but those were old and should have been done in this version 6.
I updated my CentOS 5 box recently. But after then my Apache can no longer work; every time I try to start apache, it says started OK but then dies immediately and no error message at all. When I tried 'apachectl restartI', it says apache not running. It has been running fine before the update. I've looked at /var/log/httpd.log but there is not any message about my problem.
I am trying to get a server to boot off the lan (pxe). I added a tftp server and tested it as operating successfully. I just plugged the pxe-server in and see the dhcp request/response as expected. The pxe-server then sends out an arp to the same address as the dhcp exchange, but the server never responds.
1. as the pxe-server already has info on the mac/ip-addr, why is it now sending another arp
2. why doesn't the server respond? I have most of my network setup the same way and the dhcp exchange is fine.
3. I'm guessing that the arp is triggered by the bootp exchange (next-server).
I do not have the server in the host table under that address.
I need to create a network boot from 1 laptop to another, with a crossover ethernet cable between them, no routers no nothing, my computer is supposed to be the server. I followed half dozen tutorials over the internet but I think my major problem is with the dhcp serverfollowed this tutorial[URL]but when the client boots it makes several dhcp requests but doesn't respondwireshark capture looks something like this until the client times out
I have Centos 5.4 installed on my server. Everything works perfect, however sometimes apache does not work properly. When I write my domain to browser it tries to reach the site, however it can't get any result. (There is no "browser couldn't find" error). The browser just tries to get the content.
When I login to my server with ssh using my domain name, there is no problem. (Named works.) When I give the "service httpd restart" command the problem disappears.I looked at httpd log files but there wasn't any problem at that time.I use the API's of the Facebook and Twitter, so there are many Curl requests are made with PHP. Could that be the reason?
I recently set up a new web/file server with 9.10 server x64 with 2 NICs and I am trying to configure eth0 to respond to my LAN for internal samba filesharing and eth1 to handle website/ftp requests on my static IP, but whenever eth0 is up the server is not accessible at 173.XX.165.65 for web or ftp but both work fine at 10.1.10.100. When eth0 is down, public IP works fine. I have set /etc/network/interfaces like this:
Code: # The primary network interface auto eth0 iface eth0 inet static address 10.1.10.100
opensuse v11.3 I enabled a NFS server on a host, set up a couple of exports, opened the ports in the firewall. When I open the NFS Client on another host and select "Choose", there is popup that states "Scanning for hosts on this LAN...". Then it returns an error "No NFS server found on your network. ..." That's funny because I had previously mounted the two exported directories already by entering the server name manually. How do I get the NFS server to respond to an automated search?
I have two dhcp server (dhcp3) in the same network, this network is a link layer network so every host is seen as directly connected. The two servers have debian lenny and there are near 13 AP mikrotik to give connection to the XO laptops (from the project one laptop per child). This is for two public schools (each one with one server) that are connected via a p2p connection and each one provides internet for the school and outdoor too. The servers are also file servers, proxy, etc.
Each time a laptop asks for an IP, it sends a broadcast message and this petition gets to both servers, now a days the first server that reply is the one the laptop associate with. What I want to do is, knowing the bandwith use of the ADSL, the clients connected to the server, and the cost to the AP that the laptop associate with, decide wich is the best server to be connected to. What I want to achive is to balance the load and to decide the optimum connection, because now it could happen that one server is very loaded and the other is free. I tried to run dhcp with inetd and use tcp wrappers to invoke a script to check a condition before responding and, in case to be the best server, reply to the laptop, but i couldn't get the dhcp server to respond when I run it with inetd. here is my inetd.conf
There is this server running squid and dansguardian as proxy for the local network. Everything is working fine. But I have seen that from time to time the danguardian dies out and fails to respond to shutdown or restart commands. And this is because of the binary located at /usr/local/sbin named dansguardian goes empty. There are multiple instances and hence copying another named dansguardian.2 to dansguardian does it. And dansguardian works normally as it should. Looked into dmesg and /var/log/messages but nothing there. It was compiled and not installed from pre compiled binaries. And runs on CentOS5.4 Final.
I got a CentOS server setup as a dhcp server using dnsmasq. I followed this guide more or less: [URL] So, the problem seems to be concerning the DNS server on the clients. In windows I get the "limited connectivity" icon for the network, and when I select troubleshoot it says the DNS server does not respond. Issuing 'ipconfig /all' clearly shows the IP of the CentOS machine as the DNS server, which should be correct, yes?
ETH0 is working as WAN connection and that works great.. no problem with the WAN connection at all on the CentOS machine. ETH1 has the IP 192.168.0.1 and mask 255.255.255.0 When starting eth1, it sometimes says that it can't start eth1 because the IP 192.168.0.1 is already in use.. but that is most certainly not the case. Maybe there's some kind of issue here that messes with the DNS? What's mind boggling is that it works great on a linux machine (dhcp client) and on a windows xp machine. but it does not work on the windows 7 laptop and a vista laptop and a pda device.
I have a CentOS 5 Server running for private fun... Just for playing with it and learn a little linux.this server has to Network interface cards. one for connecting from extern and one from connecting from the LAN.when i want to connect from lan (eg via SSH) this allways works!when i want to connect not from LAN this only works sometimes! only if i establish at the same time a connection from LAN it wors mostly.with other devices i have no problem (tested another server with just 1 NIC) and this works too.also the problem is not dyndns because i have the same problem when i try to connect through the direct IP.
I have CentOS 5.5 x86_64 with Apache, php and mysql. I have just installed OTRS (helpdesk - trouble ticket system) on that server and no users. This system works with perl, apache and mysql. I notice that is slow to respond and at times unresponsive the apache welcome page. code...
I have recently make a website. When I enter to it by http://localhost it works fine, but when I enter by my IP, nothing apears. Firefox told me that the server takes too long to respond.
I cannot get either sendmail or postfix to send a 220 response, nor respond with details. See below for sample telnet output. Details: I have a server that requires email, but only for light use. I'm definitely not an expert, but I have set up a sendmail configuration on a previous server. I tried to configure sendmail first and then postfix later, when I couldn't get sendmail working. I'm not sure exactly what the problem is, but I have a feeling the following might yield some important information. Note: this is the result for Postfix, but virtually the same thing happened with sendmail, too. That is, initially the telnet connection would close immediately. Afterwords, I could connect a second time but then it never responded with a 220 banner nor any 250's.
I recently setup a new Linux server running Fedora 10. For some reason all ping response times are rounded to the nearest 10ms. For example, running the simple command "ping yahoo.com" give the following sample results:
64 bytes from ir1.fp.vip.re1.yahoo.com (69.147.125.65): icmp_seq=12 ttl=57 time=60.0 ms 64 bytes from ir1.fp.vip.re1.yahoo.com (69.147.125.65): icmp_seq=13 ttl=56 time=50.0 ms 64 bytes from ir1.fp.vip.re1.yahoo.com (69.147.125.65): icmp_seq=14 ttl=56 time=40.0 ms 64 bytes from ir1.fp.vip.re1.yahoo.com (69.147.125.65): icmp_seq=15 ttl=56 time=50.0 ms
I could post a larger result set but its all the same... every response is rounded to a multiple of 10ms. This wouldn't be a big deal except that the server is running Nagios for monitoring so accurate stats are important. The Nagios check_ping and check_icmp commands are also returning rounded off results. How can I get ping to simply respond with the actual response times rather than a rounded off number?
My bluetooth manager is dying every few minutes or even every few couple of seconds. This happens when i'm using bluetooth mouse. Mouse works correctly cause i've tested it in windows. In the attachment there is dmesg output. In dmesg i keep geting lines like:
Quote: [ 1463.864082] usb 4-1: USB disconnect, address 10 [ 1463.864601] btusb_intr_complete: hci0 urb eddf2900 failed to resubmit (19)
followed by reconnecting both, USB dongle and mouse. Then it works for a while and dies again, over and over. It also happens when mouse it idle (no matter if 5 seconds or 5 minutes).[URL]..
Whenever I use Ubuntu, the internet seemingly dies out randomly. It never does this for windows 7. Could it be the router coincidentally dying, or is it a problem with Ubuntu?
I don't want to 'spam', (I had started a first thread about this some time ago), but I'm (still) experiencing problems with my internet: I can use the internet (I am connected through a simple switch) for some time, that is: surf the internet (in firefox) and download using vuze (azureus) but after some time, the internet connection 'dies' (downloadspeeds jump to 0b/s and I am not able to surf to any site in firefox). When that happens, the only 'solution' to this is restarting my pc.
I first experienced this when using ubuntu 10.04, so I thought that it was a 10.04 issue. I knew that when I had ubuntu 9.10 (karmic koala) installed, this didn't happen. So today, I installed karmic koala, but much to my surprise I am experiencing the same problem. I used 'lspci' to find out what NIC is in my pc and I found out I have the following NIC: 00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 78 ) I'm suspecting the NIC to be the problem. Is this probable? If so, I want to buy a add-in network card (simple one, not a gigabit card)
This can't be duplicated by anything specific, but I know it's not out of RAM at this point. The console keyboard and mouse are inoperational, and the monitor display seems to be going through test patterns, which turns out to be that the monitor is trying to sync to video output which is switching on about once a second. I can ssh into the box and see that many processes that were running are no longer running, for example gnome-session... and that once per second there is a new X process invoked with a different auth-for-gem parameter, per below:
I survived a disk crash and had to re-install to a new(er) disk, now, the JRE is in line to be set up. It's installed according to the instructions...so when I test (using Runescape, for example) I get this traceQuote:
java.lang.NullPointerException at java.io.FileDescriptor.incrementAndGetUseCount(Unknown Source) at java.io.FileInputStream.<init>(Unknown Source)
I am running 9.10 on a HP Compaq. Every few days X will die. The screen goes blank and will not display anything. I have to SSH in, but even trying various commands like gdm restart does not help. I eventually have to reboot the box. Below is a snippet (hopefully not too large) of dmesg:
/dev/sr0 on /media/cdrom0 is a CDROM, but I dont think thats the issue.
[707515.629800] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [707515.629806] sr 1:0:0:0: [sr0] Sense Key : Illegal Request [current] [707515.629811] Info fld=0x45d18, ILI [707515.629813] sr 1:0:0:0: [sr0] Add. Sense: Illegal mode for this track code....
