Server :: DNS Server All Sudden Acting Weird
Sep 29, 2010
I have a DNS server that's been working just fine up until now. I have a local domain, "galapagos.office" set up, with several subdomains on it. I've been able to get to all the subdomains just fine for the last couple weeks from several different machines.Now something weird's happening:
I CAN ping wiki.galapagos.office from a local machine
I CAN do an nslookup on wiki.galapagos.office from a local machine
I CAN see wiki.galapagos.office in a browser from a local machine
I CAN'T ping wiki.galapagos.office from the DNS server itself
I CAN'T do an nslookup on wiki.galapagos.office from the DNS server itself
I CAN'T see wiki.galapagos.office in a browser from the DNS server itself
And I COULD do all these things before. I don't know exactly when things went south because I almost never do anything from the DNS server itself.
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Oct 11, 2010
We are running a sendmail(8.13.8-2.el5) service on one of our server running RHEl5
When I try to mail from one of the machines connected to the server on our private network, log file on that machine shows that the mail has been sent and also there is no mail in the queue, but when I check the server, there is no mail received, not even any status on log file. Did anyone experience anything like this or any idea about this problem?
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Jan 7, 2010
Recently I had (and am still having) a lot of trouble with my Fedora 12 installation.First, 3D acceleration and sound stopped working. This was solver by adding my account to the "video" and "audio" groups (I wonder howcome it worked before?).Then, my keyboard stopped working in X. It would work fine in CLI mode, but as soon as I start X not even the Num Lock LED worked! I think I glimpsed that it might be due to a missing keymap or something, but I don't know. I got my computer back by making Xfce's keyboard settings override X, but it still isn't right, and I can't use anything other than Xfce.Recently I tried to burn a CD/DVD but neither Brasero, K3B, nor cdrecord could detect the DVD burner.
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Jan 3, 2011
If I right-click a file and select VLC, I get immediate playback from VLC. Everything seems fine until I hit Ctrl+O to select another file. It seems to freeze, but it actually just takes a few minutes to get going.So I opened VLC via a terminal, then hit Ctrl+O,
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May 30, 2010
I was working on our PC and screwed up my logical partition. Not much of a concern there but the problem starts when I was trying to repair them. My gparted says that my whole HD is empty. In fact, when I try to install an OS, it wanted to install it on the whole HD (80-G).
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Mar 10, 2009
We have a nameserver which we moved over from an old server & ip a couple of weeks ago and updated all our dns records.Currently, our dns provider shows the proper records for our server, and if we dig the server at our dns provider we get the results. However, if we ping the server, or dig it and don't specify our server we get the old ip address.An opendns cache check also sporadically returns the proper results from some of its locations but generally returns the old ip address. Does anyone have any suggestions because this bewildering me.
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May 26, 2011
So first my network appindicator disappeared, then my weather appindicator won't show me the weather, NOW my computer won't let me download anything from the software center and won't let me update anything in the upgrade manager.
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Jul 14, 2010
I am setting up a server and trying to access its partition over the nfs on a client machine. Our server has 4 1.5TB disks and the idea was to make a RAID 5 out of it.Now here is the problem:When I used only 1 disk that is nfs partition was of 1.5TB, I got fine speed(30MBps), but with multiple disks whether I am making 3TB (Raid 10) or 4.5TB (Raid 5), I get a really poor speed of 5-6MBps. I/O just waits.But for all above cases, disk I/O locally works fine.Does anyone knows any NFS limitation that is causing this problem?
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Dec 20, 2009
Just like the title, my Ubuntu 9.10 audio acts really weird to me. Sometimes I can't record anything using the sound recorder and the immediate muting of the loud speaker when i plugged in my headphone doesn't work, but then all of sudden it worked and then the problem might occur again. It's like, in some period the audio works perfectly well as if there's not bug, and then it goes wrong.What I noticed is that the problem reoccur when I shutdown/restart my PC and after few minutes/hours/days it works fine again. Does anyone know why this happens and help me solve this problem?
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Oct 10, 2010
I have just upgraded from 10.04 (where everything was working fine) to 10.10...I am able to boot in recovery mode (graphic mode is working ok this way), but not in normal mode: just after the purple Maverick boot screen, I get a black screen where my computer stucks, possibly for ever (although I can't be definitive on this point )Do you guys have any thought on what is going on here?I boot once in recovery mode, updated my graphic driver (ati, which was not working well anymre according to catalyst), and then I thought everything would be allright, but it is not the case: still black screen at boot.
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Jan 30, 2011
I recently (fifteen minutes ago) started my old desktop again and tried to do an updateCode:sudo apt-getupdateWhich gives me:Code:E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.When I try this, my screen goes back and after a few seconds I end up back at the loginscreen (I not logged in anymore)The output of Code:sudo dpkg --configure -ais followingCode:Setting up ubudsl (1.0.0.77-7) ... System start/stop links for /etc/init.d/ubudsld already exist.Stopping UbuDSL daemon...No /usr/sbin/ubudsldaemon found running; none killed
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Oct 27, 2010
I've recently switched back to Ubuntu and I eventually had to sync my new ipod. I've been getting this problem where every time I sync with either GTKpod or Rhythmbox my ipod music is acting weird. It shows new music that I've added but when i choose to play it skips to the next track that then skips to the next track, and so forth. Its as if my ipod is filled with songs that don't even last 0.0 seconds! But the songs completely play in Rhythmbox, so I don't think its a problem with the files themselves.
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Jan 26, 2010
by now I have 10 servers for hpc, power computing oriented. My users need to launch several processes using qmake. The users are used to work with ubuntu 9.10, and the software from the repositories is switable for them. I've deployed ubuntu 9.10 to all 10 servers (pxe rocks). By now we work with parallel-ssh and cluster-ssh, which allows as to launch the same process to all servers. With this tools this tools the servers remain as independent but with the same software and the same launched command. Now we would like to go to next step and see all the servers as a single one with all the resources from the other 9 as if was its resources. The difference would be substantial in time to process and also time to design the command to launch.
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Dec 14, 2010
I want to use 2 network cards on a notebook (one internal and one by USB). I don't want the typical "internet sharing", so I want it to act really as a switch:
Other room <== 1Gb/s ==> Notebook <== 100Mb/s ==> network switch with more computers.
I want to do it because i want to use the 1Gb/s link from the other room to the "servers" room, and then the rest of servers will run at 100Mb/s. I wanna all my computers in the same network, like there's no notebook in the middle, so the Notebook will act as a switch (and a server). i wanna (assumming all of this is possible): Code: > [network switch] 1Gb/s
> 192.168.2.1 [router] 100Mb/s
> 192.168.2.2 [wi-fi AP] 100Mb/s
> other room 192.168.2.50 [new notebook] 1Gb/s
[code]....
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Jan 23, 2010
I have an EPIA M10000N (VIA Nehemiah 1GHz integrated CPU) motherboard (square MB each side 17cm) in a GA610 case. These last two links show the situation quite well.I have neither a CD/DVD drive, nor a floppy drive in the case. Only a hard drive, the motherboard, and the power supply.As you can see in the pictures, the whole thing is cooled by a 4cm fan on the CPU heat sink, and another 4cm fan at the rear of the power supply.This is rather noisy (and unbearable in a living room!).After looking (not that hard, though...) for a solution, I did not find a proper (less than 20dB, and good quality) solution. So the living-room PC became a server. It's either that of throwing it away, anyway. Having nothing to loose, I want to try something. And I'd like to have your opinion, dear reader.I want to:
- remove both 4cm fans,
- remove the cover from the power supply,
- cut a round hole on top of the case,
- fit a 12 or 14cm fan on the lower side of the round hole, right above both the CPU and the power supply.
I'm new to this cooling stuff. I saw that a 4cm fan can extract up to 5 CFM of air, whereas a big fan can extract at least 60 or 70 CFM!Changing two noisy 5 CFM fans with a single silent 60 CFM fan seems OK to me.What do you think of the idea?Next, for better reuse, I may buy a Noctua 14cm NF-S14 FLX. It is big and silent, and 71 to 110 CFM seems a lot! And its fixation holes match those of a standard 12cm fan, thanks to the unusual shape
Do you approve?
I still hesitate a bit because:
- the Noctua NF-P12 1300 might be more sturdy due to its regular shape...
- the Enermax Magma UC-MA12 might be a better choice because it can be washed... on the other hand, because of that, it may get loose with time...
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Aug 23, 2010
We have a samba server with a couple of shares defined as follows:
Code:
[Storage]
comment = Storage
browseable = yes
path = /home/samba
writable = yes
[Backup]
comment = Backup
browseable = yes
path = /mnt/hd2/home/samba
writable = no
[Administration]
comment = Administration
path = /home/adm
valid users = adm
public = no
writeable = yes
browseable = no
We have two samba users: samba and adm. The first is used to connect to Storage and Backup shares, and adm is used to connect to Administration share. There are two problems:
1) If Storage and Backup shares are connected to a Win7 box, the Administration share cannot be connected. All we get is an error saying that that share is already connected with different username.
2) We have managed to work around this by connecting the Administration share with the IP-address of the server instead of it's name(?!). The problem then becomes that sometimes connecting Administration share this way makes Storage share read-only. Not always though.
Wrong "security" type in smb.conf (was "user", needs to be "share"). For some reason the Storage share still occasionally gets connected read-only. Win7 also tends to forget the passwords/usernames for some shares upon reboot (not all of them, though).
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Mar 8, 2011
which i have been using whilst setting it all up at my home, connecting to the internet without any problems until now.. All of a sudden it can't access the net, it can't ping my router.. but i am able to VNC to it accross the network, passing through said router. I have it set up with a static IP, and the router IP put in as DNS and gateway, when i tell it to get an IP vi DHCP, still the same problem.. I have no idea how to get this working, any ideas?? I am new with Linux, so please exlain what i need to do..
The only thing running on this server is basically Freeradius2, Coovachilli, Webmin and a virtual machine, which is an iRedOS Mail server.
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Dec 21, 2010
I have been having some odd issues over the last day or so while trying to get a raid 5 array running in software under Kubuntu. I installed 3 1TB drives and started up, my sd* order got all messed up( sda was now sdc and so on). This wasn't entirely unexpected, so I fixed up fstab and booted again. I found all three of the drives I installed, set them to raid auto-detect and used mdadm to create /dev/md0. I then created mdadm.conf by piping the output of mdadm --detail --scan --verbose into /etc/mdadm.conf.At this point, everything was still going swimmingly. I copied over a few hundred GB of data from another failing drive and everything seemed ok. I went to reboot once the copy was done and everything just went weird. All of the sd* drives went back to the original. Of course, this meant that the mdadm.conf was wrong. I tried to just change the device list, but that didn't work. I then deleted mdadm.conf and rebooted. The drive list stayed in the original order this time, so I just tried manually starting the array.
By erasing the partition table of the 3rd drive, I've been able to get it to the status of spare, but it says it is busy when I try to add it to the array. A grep through dmesg makes me think that md has a lock on it. I'm not sure where to go with it now. If anyone has any pointers, I would like to hear them.
Device List(original):
/dev/sda => boot drive, /home /
/dev/sdb => 1.5TB media storage, failing
[code]...
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Apr 25, 2011
So, the NSA puts out some handy documentation on locking down a RHEL server (running centos 5.6 x64 myself) here, [url]. Under "Ensure System is Not Acting as a Network Sniļ¬er" on page 63, it says that if any numbers below the first line in /proc/net/packet, that it is acting as a network sniffer.
I get the following output:
Code:
Unless I've been pwned, I don't know exactly what could be causing this. Besides samba, nmap (compiled from source, not from yum), screen, and rtorrent, there's nothing I've installed beyond the fresh install I did a few days ago. I was not running nmap when looking at /proc/net/packet.
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Jul 4, 2011
I have been running two Ubuntu 10.10 servers for some time now. My main server is 10.111.1.65 and backup server is 10.111.66. The main server is to host my website and ssh remote access (Key auth). The backup server pulls via ssh key auth what is in my /var/www (among other folders) to the backup home dir (encrypted). For some reason today I checked the uptime and it was 7 hours on both servers. All my other computers on the same power supply have a uptime of over a month. For some reason I now cant access backup via ssh from main's key (I could before) and I can not get to the home dir, see below:
Code:
carlos@UbuntuSvrDell2400:~$ sh "Access-Your-Private-Data.desktop"
Access-Your-Private-Data.desktop: 1: [Desktop: not found
[code]...
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Feb 20, 2011
My only goal is to have a raid-5 that auto-assembles and auto-mounts. Hardware: 4*2TB sata (raid disks), 1*500GB IDE (OS disk), 1*DVD IDE all plugged direct into the motherboard (nForce 750i SLI).
Starting partitions on the raid disks: gpt ext4 The problem occurs when I restart my comp after building it for the first time. I am able to see it assemble, I am able to partition it, I even mounted it Once.This is the second time I've built it so I have watched everything that happened. I don't know if this has anything to do with my problem, but when I created the raid my drive designations were: sda - 500GB(OS), sd[bcde] - 2TB(raid). When I restarted: sd[abcd] - 2TB(raid), sde - 500GB(OS).
[Code]...
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Feb 19, 2009
We are having an odd apache issue. Certain files are not being served out.The files actually live in a remote DFS volume served off a windows system. They're mounted under /data/vizwx. There's a subfolder here called wx_intranet which has all the data.The Document root for this virtual host is /data/www/htdocs. There is a data/vizwxsubdirectory with a symlink named wx_intranet which points to /data/vizwx/wx_intranet .SELinux is completely disabled (not even permissive).
When a user requests a file from http://<host>/data/vizwx/wx_intranet/VizWx_14c.jpg no error is given to the browser. Firefox just shows the URL in question (I can't even view source). The <vhost>_access.log file shows: wx_access.log:172.16.1.16 - - [19/Feb/2009:15:30:16 +0000] "GET /data/vizwx/wx_intranet/VizWx_14c.jpg HTTP/1.1" 206 167791And there's nothing in the <vhost>_error.log, even after cranking the LogLevel up to info.
The permissions on the files in the share are slightly weird for reasons I don't fully understand, but they should work... the files are an effective 'chmod 3777 <file>' for all files in the mounted directory... that's with Sticky and SetGID bit set.What am I missing here? Oh, I also modified the Vhost's options from "Options all' to 'Options all -SymLinksIfOwnerMatch" to see if that was the problem... no dice.)CentOS v5.2, apache 2.2.3
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Jan 29, 2010
I realized there are often weird yahoo connection on my mail server (SCALIX sendmail).
on ps aux | grep yahoo , i get a lot of connections such as these:
I get about a dozen of it, i think it is taking up my connection, anyone has any idea why how these connections appear? Is it because of my server's security loophole?
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Aug 23, 2010
I am completely stumped. Found my web server (lighttpd) unresponsive this morning and had to hard cycle it. After some cleaning up, all was happy. However, after about an hour of handling a decent amount of web traffic, time freezes as far as the web server is concerned. I've got an hour of access.log data with the following date: [23/Aug/2010:20:42:58 -0500]
It never changes. The load average now reads 0.00 0.00 0.00 (which is totally inaccurate). And I am not able to successfully log in remotely. I have taken the server down 3 or 4 times today and after an hour or so of functioning normally, this is what happens. Additionally, the local time is now off by 30 minutes.Trying to force with ntpdate does nothing (or, at the very least, sets it to the same incorrect time)
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Nov 24, 2010
i'm setting up a common public folder on a file server, but I seem to be getting some permission differently to what I expected. The folder is /temp which is a separate drive. The fstab entry is:
[Code]....
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Feb 11, 2011
So I just turned my computer on and it was beeping rapidly, and it would stop if I hit "Enter". Also this came on my screen: Cannot set Fray", something like that. It boots fine..just what is that?
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Apr 2, 2010
I have installed a linux server in my office to run 16 machines. Its main use will be a internal mail server but will be also running websites.
I have installed Ubuntu 9.10 server x64 and have got apache running.
I am looking for the simplest more robust solution for smtp, pop3 and imap. I have only ever used qmail before and found it a pain to configure and its getting old so I though I should probably try something new. I have not much experience with running pop3 or imap on linux so would love a suggestion on that.
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Sep 29, 2010
have to create a webhost on an running fedora server which runs multiple webpages + a coldfusion serveri have to add an coldfusion virtual host to these.what i would do:*crate a new user & group*enter vhosts.conf and copy an existing host and modify it for the new one.*create an new folder and copy the main files (phpstarter and webroot) *chown the files for the right useri think an apache graceful would be needet
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May 5, 2011
Right now i have a HP DL 180 Server with 130 Gb Hard Disk & 8 Gb ram after Raiding0+1. i want to configure Domain Controller Server for my office for 200 to 300 Users. what should the partition size must be mentioned in my 130 Gb Hard Disk, is that going to be Sufficient for ME ?
i am bit confused about /Usr /Var /Boot partitions, as i need to manage perfectly in 130 GB
if i go with 4 Gb swap and remaining for " / " is that will be fine ? should i need to specify partition sizes separately for / tmp /var / usr ..
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Apr 21, 2011
I'm running a linux cloud server with the following config
1.2ghz Processor allocation
752MB Ram
The site loads slow and clicking a link almost freezes the page for a second. Also, the page loads could be much faster. We've been running mysqltuner and have pretty much optimized all slow queries. Is there anything we can do to fine tune the server for faster and more responsive?
Httpd.conf
Timeout 20
KeepAlive Off
MaxKeepAliveRequests 100
KeepAliveTimeout 5
<IfModule prefork.c>
code....
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