Ubuntu Networking :: Change The Sequence Of The Nameservers Or Insert A New One & Again It Works For A Few Days?
Aug 5, 2011
I have configured opendns on my adsl router. So 192.168.1.1 was the first nameserver in Network Managerbut I often faced name resolution issues, so I configured 4.2.2.1 as the first nameserver, 4.2.2.2 as the second & 192.168.1.1 as the third.Problem is with the above configuration everything works well for a few days then again name resolution stalls. And again I change the sequence of the nameservers or insert a new one & again it works for a few days. I am tired of doing that again & again.
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Jun 30, 2009
I finally get rid of all panel solutions on my server in order to install nginx. Everything is working correct with nginx. I defined my nameservers via my domain manager as
ns1.domain.tld ip1
ns2.domain.tld ip2
Now my question is how can i define these nameservers to my server via ssh and after defining nameservers do i have to do anything else ?
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Jan 16, 2010
I have a Huawei E220 3G modem and I'm using Ubuntu 9.10. The modem picks up on USB, and the connection works, sort of. With random times, I can't get on the internet, and when running:
Code:
mtr -n -c3 -r 4.4.4.4
it tells me:
Quote:
Could not get fd's flags: Bad file descriptor
No nameservers defined
Network Manager Applet 0.7.996 is reporting my wireless connected, and applications like Skype is working perfectly. I just can't browse.
When I restart a couple of times, and my internet browsing capability starts working eventually at times. The behavior is very random.It appears that when I fiddle with USB devices, like unplugging my external hard drive, and plugging the USB modem in and out, restarting, it helps. Also, when plugging in my USB 3G modem, an icon pops up on the desktop, mounting the USB device as a USB flash drive. The device has on-board memory, but can I disable this / prevent it from mounting?I also disabled IPv6 by setting:
Code:
GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable= 1 quiet splash"
in /etc/default/grub
What I also did was to "hard code" DNS by adding:
Code:
prepend domain-name-servers 208.67.222.222,208.67.220.220;
to /etc/dhcp3/dhclient.conf
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Feb 3, 2010
This has probably been beaten to death, but I can't find anything that fits my exact situation (maybe I'm using the wrong keywords, sorry).
Server:
eth0 - external NIC, DHCP IP from ISP
eth1 - internal NIC, static 192.168.0.1
DHCP running on eth1
IPTABLES set up to masquerade on eth0
I have a computer connected up via server's eth1. It's IP is 192.168.0.201 (/etc/init.d/networking restart) gives me a DHCPOFFER and everything, so DHCP seems to be working fine.
Server:
can access internet I can ssh into 192.168.0.201 (even though it seems to take longer than usual)
192.168.0.201:
can ping server (well duh, I ssh'ed in from the server) cannot access internet for DNS on the internal NAT I'm using the same DNS servers as the router, so the server's
resolv.conf:
nameserver 69.169.190.211
nameserver 208.72.160.67
[code]....
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Nov 10, 2010
To change the boot up sequence of Ubuntu and XP I opened the terminal in Ubuntu and entered ( Sudo gedit /boot/grub/menu.lst ) in the command line and pressed <ENTER> , another line ask me for password and when I try to enter it , nothing happens , the cursor just blinks.Can someone tell me what I am doing wrong.
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Feb 25, 2010
How can i change the boot sequence in grub from Linux to Windows being first on the list?
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Sep 18, 2010
I have an external drive mounted courtesy of an entry in fstab. The drive isn't detected at boot time until AFTER the backuppc service that will use the drive has started. I have to therefore manually stop and restart the backuppc service once booting has completed, otherwise backuppc thinks there is no drive available to it.
How can I force the mounting of my external device to occur BEFORE the backuppc service starts?
I am using Ubuntu 10.04 server edition
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Jun 30, 2010
i could not change the sequence of dual booting from the grub menu.lst, due to it shows a blank screen when i put the command in the terminalayan@jayan-desktop:~$ sudo gedit /boot/grub/menu.lst [sudo] password for jayan:
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Mar 2, 2010
I want to change the start-up sequence of services on SLES10/11.
I have my own start-up scripts for some services and I want them to start in a particular order(not in alphabetical order)
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May 19, 2010
I have a dualboot (Xp and fedora) system and would like to change default boot. How do I do this?
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Jan 2, 2011
I'd like to tweak my Conky so it automatically displays the days of the week correctly. So for example, if TODAY were Tuesday, it would look like this:
Tuesday
Wednesday
Thursday
Friday
[etc.]
And then tomorrow, *automatically*, it would look like this:
Wednesday
Thursday
Friday
[etc.]
I know I can get it to display *today's* date like this:
${time %A}
But how do I get it to display tomorrow's date?
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Feb 10, 2011
I have a number of CentOS servers with latest 5.xI have 3 nameservers in the resolv.conf files. All 3 nameservers test out fine when checking for domain lookups.I'm having some trouble with ns1 and shut it down.l None of the CentOS machines fail over to the ns2 & ns3 entries. Basically everything stops resolving even though the other 2 nameservers are alive and well.
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Sep 26, 2010
I want to change the Boot sequence in Ubuntu 10.04.
In the past I have used
Quote:
But with 10.04 this returns a blank screen. I assume something has changed.
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Jan 28, 2011
We have our Microsoft AD DNS servers replicating to our Sidewinder - which uses BIND for its DNS server. We ran into a situation where reverse lookup requests to the Sidewinder returned back a truncated UDP packet to the DNS client. When we added another DNS Microsoft Domain Controller, it added that name in the authoritative nameservers section of the UDP message which put it beyond the 512 byte limit. It was at about 500 bytes before we added the domain controller - then it moved to 529 which caused BIND to set the truncation flag bit in the UDP header causing the DNS client to come back in TCP mode to get the full message.
Microsoft DNS doesn't send back the "Authoritative nameservers" section in its UDP responses to reverse lookups - they probably learned that the hard way and took it out and only send back the Question and Answer section. Is there a way to modify BIND to not send the "Authoritative nameservers" section in its UDP responses and only the Question and Answer?
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Jul 13, 2011
Does udp use Packet Sequence Number?
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Mar 20, 2011
I have 2 questions:
1. How can I set the TTL to 2 days for all stuff cached by dnsmasq?
2. When I go to [URL] from my browser and then execute [URL] the query time returned is > 0 ms. When i execute it again it is 0 as it should be. So is dnsmasq not caching the domains looked up by my browser or what? in /etc/resolv.conf I have only 127.0.0.1 and for the upstream servers I have a different file that is only used by dnsmasq.
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Jun 3, 2009
Can anybody tell me how I can synchronise files between two computers in a network that have been modified or created within the last 60 days?
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Feb 11, 2010
I'm running my own webserver at home. I've also bought a domain (it's .nl because I'm Dutch). But now I need to change the nameservers from my domain.
I've read a lot of things about running your own authoritative nameserver and things like that. I also experimented with bind9 but I can't get it.
So, I've got a Webserver running Ubuntu Server. I've bought a domain. Nothing more and nothing less. So is it possible to run a nameserver or something else to get it work in this situation?
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Dec 20, 2010
I currently have a VPS at burst.net. I'm trying to get a website setup, and I have my web server installed, but I have no idea how to get my domain name setup with it. Does anyone know of any documentation on how to setup nameservers with a VPS? I'm sure this is a really easy answer, I'm kind of a newbie to Linux.
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Oct 25, 2010
When i try to login with AD credentials on Ubuntu 10.10 and the user has is password almost expire, the gdm hang and display the message "your password will expire in ... days"
If i login with any other user without that restriction, it works flawless. does anyone know what configuration file i need to change to bypass that problem.
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Mar 14, 2011
I am facing a little problem with names servers.have a VPS with Kloxo installed on itI have registered 2 name servers (i.e. ns1.domain.com and ns2.domain.com) past one month.These nameservers are not accessible yet. I have check the nameserver on internic site and they are registered with the correct IP. But if I access it online via Internet explorer or nslookup I get server not found. And if I put ip address in IE I get the default page of my server
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Feb 16, 2010
I am trying to set up a mail server following the perfect server guide for fedora 11. I am confused as to what to enter for the nameservers. I already have a webserver running using fedora. I used ZoneEdit.com for the nameservers for the web server. Should i be using the same nameservers for my mail server?
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Apr 27, 2011
I have the following problem with sendmail on F14 (had the same on F13 already):
I have a network setup using bridging which is controlled through traditional ifup/ifdown (because NetworkManager can't handle bridging). My sendmail configuration differs from the Fedora default only by having a SMART_HOST relay. The queueing interval in /etc/sysconfig/sendmail is the default (1h).
When my network connection is up, sendmail normally sends email through the relay immediately. Sometimes I have to interrupt the connection for a few minutes. When my network connection is down, sendmail starts queueing email (OK this far). When the network connection comes back up, I'd expect sendmail to restart sending mail through the relay again. But sometimes, that doesn't happen. Instead, sendmail keeps queueing my mail infinitely (I have seen it happen for several days) until I finally notice that my email isn't received, and run sendmail -q by hand (by that time, my boss is already angry that I'm not responding to his email). In that state, even new mail is queued rather than forwarded by sendmail. It appears that the only way to stop that behavior is to restart the sendmail service.
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Apr 26, 2010
I have sound but my volume controls dont work on my asus laptop. If i goto system - pref - sounds it says its loading it and then it closes. Pulse audio says it cant connect. Ive also lost the volume control icon in the top right for some reason as well? The only thing ive done recent is install mp3 codecs. Now i half to manually reload the drivers for my volume to work after bootup.
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Feb 2, 2011
I am having a strange problem on my private nameservers registered with godaddy. There are around 10 domains right now which are using my nameservers ns1 & ns2. After the setup of my nameservers, domains. I checked that the domains are resolving good to the mentioned IP addresses which I mentioned in the zone files but when I am checking the domains on it is showing "Missing nameservers reported by parent" error. I don't know why it is reporting me this error.For example I checked one of my domains spurstone.com & I got the above mentioned error. Although whois database is giving correct results with nameservers NS1.INDEPENDENTADVISORONLINE.COM & NS2.INDEPENDENTADVISORONLINE.COM
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Jan 19, 2011
I keep getting this error message:
The VPN connection '<insert name here>' failed because of invalid VPN secrets
I have Ubuntu 10.10 installed on a Dell Latitude D600. It's a fresh brand new install. After I installed all the updates, I proceeded to install network-manager-vpnc. Then, I imported .pcf files so that I can connect to the office VPN,but it gives me the error message above.I have gone to ~/.gnome2/keyrings and renewed everything.Tried moving them away, and then back again. Created a new keyring. Nothing.
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Mar 7, 2011
When I tried to insert module in my linux system run on AT91SAM9261EK , I've got something like :
[Code]...
I suspect I have missed some kernel settings when I compiled my kernel so that the kernel cannot recognize those functions ..
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Sep 25, 2010
Would it be possible to insert another wired network card into the router-connected computer, share the internet connection and be able to transfer files between the two?
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Nov 27, 2010
I have a laptop bought it Germany. It has a pretty standard keyboard, with the bottom left most keyboard being the Fn which enables controls on: Bluetooth, WiFi, Sleep and other functionality. My trouble is that both Ubunut, and Linux Mint Debian edition recognize this key as CTRL, thus not giving me the option to use these functions Im pretty clueless how to change it. Currently my console setup is giving this keyboard a standart 104-PC keyboard¦ Just adding some info about this laptop:
product: TW8/SW8/DW8
vendor: Quanta
version: TBD
More info:
The bottom row of the keyboard has: Fn, Strg,Win, Alt, Space, Alt Gr, Menu,Strg, Left, Down, right keys. Is there a some one here who knows which layout is this ?
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Oct 23, 2010
I'm not sure if this is a problem with Ubuntu or with my router(s).
When I first installed Ubuntu about 6 months ago, I was able to connect to my wireless network without any problems. Becaue it's a laptop, I turn it off when I'm not using it.
But, starting about a month ago, if I don't use my Ubuntu computer for a few days at a time, it won't "see" my broadcast SSID when I turn it on. The SSID for my network just doesn't show up on the list of SSIDs that it detects in the area (but it still detects other people's SSIDs).
If I connect Ubuntu to my wireless network every day, it will automatically connect to my network without a problem, but if I don't use my computer for a few days, then it stops being able to "see" my SSID.
In order to connect, I have to connect to my router from my hardwired Win 7 desktop PC via 192.168.1.1 and re-save the wireless settings without changing them (the router is set to broadcast my SSID). Then my Linux machine is able to see my SSID again and connect wirelessly.
The problem is obviously with the router, right? So I bought a new router, and have the exact same problem!So now I'm not sure any more if the problem is with Linux or with both routers.
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