Software :: DNS Broken \ Does Not Appear That Any Of The Configuration Or Zone Files Were Changed?
May 26, 2010
I run BIND9 in Debian on my server, and did a dist-upgrade last night. Prior to the dist-upgrade, everything worked fine. It does not appear that any of the configuration or zone files were changed. Right now, I am seeing ServFail replies to the A queries:
Code:
13:00:26.496391 IP 10.7.21.12.45956 > 10.7.7.2.53: 39290+ A? int0x80.com. (29)
0x0000: 4500 0039 603c 4000 4011 aa5c 0a07 150c E..9`<@.@......
[code]....
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Apr 30, 2011
I have a problem with the configuration of the NS zone. Looked through the logs, and there:
Apr 28 21:20:19 szewczyk named[18340]: /etc/bind/db.domain.pl:1: no current owner name
Apr 28 21:20:19 szewczyk named[18340]: zone domain.pl/IN: loading from master file /etc/bind/db.domena.pl failed: no owner
[code]....
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Aug 31, 2010
I originally installed Kubuntu 7.10 on an ACER laptop (exact model escapes me at the moment) and subsequently upgraded to 9.10 and then to 10.04. Starting with 9.10, I had problems with the computer suddenly turning off in the middle of doing work. Eventually, I figured out that when this happened, the bottom panel had gotten quite warm so it probably a thermal control measure. Further, I discovered that I could prevent this by setting the power regulator to powersave, which effectively kept frequency scaling at 50% and under which I never had the computer suddenly turn, the only exceptions being when unplugged the computer and replugged it in and it would switch to dynamic power policy thus running at full power.
However, after "upgrading" to 10.04, I can't do anything to restrict frequency scaling. Whether I set the regulator to powersave, ondemand or anything, CPU frequency can go to full capacity until it heats the CPU to the critical trip point, invoking poweroff. Sometimes, this would happen just a few minutes after "acpi -t" reported 40C (is there some way to test the output from acpi, I've seen it report obviously wrong figures such as 0C when the room was considerably above freezing?). While trying to figure out what to do, I discovered the /proc/acpi/thermal directory and subsequently the /sys/dev/... directory.
I would like to know which directory I should focus on and what files in order to establish trip points and direct actions that will force the system to reduce heating so it won't reach critical. It's not like it's particularly compute intensive tasks triggering this. I have had it happen while running nothing more than the windowing system, system monitor, terminal and paging through a file with less. I have looked for documentation online but have not found anything that clearly explains what I need to do. The only parts I understand from what I've found are "[critical]: S5", "[active]", and "[passive]". The "[passive]" line included items like "tc=..." and "device=0x...", but I have no idea whatsoever what any of those settings do and the documents do absolutely nothing to explain them.
1) what file I need to edit, 2) what options I can set in the file, 3) what values those options can take and 4) what effects those values have on ACPI's behavior. Lastly, the default setting HAVE GOT TO BE CHANGED. Having poweroff as the first line of defense against overheating is simply UNACCEPTABLE. What would happen if this occurs during the middle of a system upgrade? I know at least enough to figure what needs to be done, even if I can't figure out how to do it. Many users can't even do that and I don't think they should have to. The installation process should automatically detect what methods of reducing thermal output available (reducing frequency scaling, throttling, fans) and set trip points that invoke them before reaching critical.
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Mar 27, 2011
I installed debian 6 (stable) on laptop with dual boot Windows 7 and Debian. when i was installing debian ,every things were ok and installed correctly (such as DHCP configuration) before installing APT package configuration part. error is about mirror zone! i checked it and tested with all mirorrs in list but i couldnt config APT yet.i did installation without APT.after booting debian i have apt-get and aptitude commands but didnt work commands like apt-get update or aptitude install ... or aptitude update .... when i ping an ip , it dosent answer cause of errors .(but i have network connection on windows7 correctly. im using connection wired.
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Jun 3, 2011
I've configured my dhcp server to update dynamically the DNS zones of BIND9 name server. Everything works ok, except for reverse nslookup:
nslookup 10.141.50.3
Server:127.0.0.1
Address:127.0.0.1#53
[code]....
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Dec 20, 2010
i am trying to setup a minimal bind9 dns on RHEL5.in /var/named/chroot/var/named/etc i have following files,after installing bind and caching-nameserver:
localdomain.zone
localhost.zone
named.broadcast
[code]....
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Sep 20, 2010
The thing is, I've created a new local zone here (called "local.lan"), and, aparently, it is working fine, and DHCP3-SERVER is updating DNS info through the controls.But sometimes I get some strange answers from the server, like when I do the "arp" command in one of the clients, and get the server's hostname "mixed" with it's own reverse, like this: "dns.local.lan.2.168. | ether | 00:02:1e:f5:61:74 | C | eth0". Other thing is that sometimes my DNS don't update when a computer "enters" the lan. In the /var/log/syslog the DHCPOFFER appears, but the information about the DNS update isn't there.So, I would like to show you my named.conf file and my local zone db file, and get some feedback from you (what would you change... what is wrong...).
# ------------------- #
* named.conf:
# ------------------- #
[code]....
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Feb 25, 2011
Here's a little tool that does this:
Without arguments, updates the SOA serial in a zonefile to the current date. If the date was already updated, just updates the revision number (incrementing up to 99, and then again 01). Uses RFC 1912* recommended format.
With $1 == <two digit number>, auto updates (if necessary) just the date part and uses your provided revision number.
With $1 == <eight digit number>, uses that as a date (no validation of any kind), and just auto update the revision number
With $1 == <full serial>, will just replace whatever the serial is with the provided serial, without any validation
* YYYYMMDDRR (4-digit year, 2-digit month, 2-digit day of month, 2-digit revision number)
This script + keeping SOA/NS/MX/CNAME RRs in a common file $included from other files with $ORIGIN and A/PTR/TXT RRs, made everything way easier to manage, enabling me to script some zone switchers, automatic failover/redirection of DNS on WAN changes, etc, etc. I think this stuff might be cool to integrate with something like this script and make nice CLI toolset for bind. Looking forward to implement it.
Code in pastebin
Code:
#!/bin/bash
# globals
script_name="${0##*/}"
script_dir=$(readlink -f "${0%/*}")
script_version=1 .....
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Jul 11, 2011
In our Server they configure Master / Slave Dns using SSL authentication while tranfering the zone files, i dont have much idea about ssl authentication for Dns, how it will works
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Jan 12, 2011
I have bought an external usb hard drive on which I back up my three computers every once in a while.Space will quickly be used up.I can't find that little bit of research that I need yesterday.Here is what I would like to find:An application that eliminates doubles in identical files and renames files that have changed by appending the last saved date yyyymmdd to the file name.Does such an application already exist?
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Nov 25, 2010
the permissions for my home directory were accidentally changed from 'access files' to 'create and delete files', and I changed them back, but ever since then I am not able to change any preferences/settings at all. power management, themes, panels, emerald, anything. my user account is supposed to be the administrator, and all the user privliges are checked. how to get control of my computer back?
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Dec 14, 2010
This morning's update
root@squeeze:/home/me# aptitude update
[Code].....
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Apr 26, 2011
We had a server failure this morning because grub was throwing error 15 (file not found). We discovered that the disk had changed names from hd0,0 to hd1,0. Making the appropriate replacements in menu.lst fixed the problem, but I'm still wondering what could have caused the spontaneous name change.
here are some other possibly related tidbits: * the server had been down because of a power loss, but it is behind a UPS so i doubt there is any electrical damage * eth0 also temporarily failed but the system failed over to eth1
My current theory is that when the bios was configuring the hardware the loss of eth0 shuffled around the addresses of the remaining hardware on the pci bus, which somehow caused the hd0/hd1 confusion. The problem is that everything i've read [URL] says that the drive assignment should be based on the way the disk is connected to the motherboard (which in this case didn't change)
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Jul 10, 2015
I use Debian Stretch and I've installed it twice with the same ISO on the same laptop. First just to test a few things, then freshly installed it again.
The first time the wireless card was named wlan0 (as always for me, I've never had another name), the second time though it was suddenly named wlp3s0.
How did this occur and may I change it back to wlan0?
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Aug 9, 2011
I've been using dhcpd for address assignments to PCs for a very long time with no issues. I recently upgraded from lenny to squeeze and now dhcpd seems to have new behavior which I can't seem to change. Here's what I want to do. First, I have a simple situation and don't want to get involved with dynamic DNS updates. I have host statements for each of my PCs and a range statement for cases where I install a new device and don't yet have a host statement for it. Previously, I could discover the ethernet address for the new device from the dhcpd log and add a host statement with an address of my choosing for the new device.
I'd then restart dhcpd and do something like reboot the device or issue an ipconfig /renew statement on the new PC. What would happen is that the old dynamically assigned IP address would be NAKed and the device would do a DHCPDISCOVER, etc. and get the new IP address I specified in the dhcpd.conf host statement. In squeeze, this no longer works. The client asks for the old address it got dynamically and the server just says yes. I can't seem to find a way to get it to NAK the dynamic address and use the new address I've specified in the host statement. I'd appreciate any enlightenment on how this is now supposed to be done. Here's my simplified dhcpd.conf file:
authoritative;
log-facility daemon;
ddns-update-style none;
[code]....
Note that the address here was assigned based on a previous range statement and isn't consistent with the above config file.
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Mar 7, 2010
There are many time zone files accessible from the command line that don'thow up in the GUI ("system-config-time"). How do I add these time zones to the GUI
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May 8, 2010
I have a directory (let's say A) with a few hundred files and subdirectories and a copy of this directory (let's say B). All the files and subdirectories in B have a newer date than A. However only a few of them are really changed files. Is there a way to find those files and directories? Basically they have different sizes so this could be used to compare them with the files from A.
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May 18, 2011
if there an application which does the following:
1. I have a laptop with an internal 200GB HD.
2. I run the application & it creates a list of all files (size & time-stamp) without actually storing them. Let's call this the "snapshot list".
3. I update some of the files on the laptop.
4. Now I run the application & it only copies the files which have changed on the laptop, that have different size/time-stamp from the snapshot list, onto some external media, such as a memory card. Of course, the files should be copied onto their proper location in the directory tree & not just pile up in one place.
Why is this useful? although the laptop has a 200GB HD I typically only update a small number of files, whose total size is maybe 10MB or so. If I could only backup those which have changed, I could do this with a tiny SD card instead of lugging around an external usb HD.
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Jan 11, 2011
During my backups I'm finding that rsync is copying all files, instead of just what's changed.
I'm rsyncing between 2 USB external hard drives. One hard drive is FAT32 and one is NTFS. I've examined some of the files and believe that the difference is that there's a 1-second modtime difference developing in some of the files somehow.
Here's an example. These duplicity files were synced from /media/BACKUPHD (the NTFS drive) to /media/VIDEOHD (the FAT32 drive) only a few hours ago this morning. They have not been touched or changed since then, but that 1-second difference in their time stamps has appeared:
Code:
tim@localhost:~> stat /media/BACKUPHD/backups/duplicity/duplicity-full.20110107T145955Z.vol10.difftar.gpg File: `/media/BACKUPHD/backups/duplicity/duplicity-full.20110107T145955Z.vol10.difftar.gpg'
[Code]....
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May 4, 2010
After I did a safe-upgrade on my lenny system, clamav is now broken, which is quite a pain since my e-mail flow is now failing.
I get this in the log. CLAMAV: couldn't connect to: /var/run/clamav/clamd.ctl:
I have volatile in the list, and clamav is also installed from volatiel of what I can see, so what went wrong? Is the package broken?
[Code].....
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Aug 23, 2011
I use a PHP IDE that has no built-in ability to upload a project to a site. So, I'm looking for common easy to use tool for Linux that would able to upload modified documents to the server instead of uploading of the whole site. I also accept shell scripts that would be able to do this.
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Apr 28, 2010
I have deleted the mime directory under /usr/share/icons/Humanity, and many files' icons have changed to the gnome style. Then I restored the mime directory back, and typed command sudo gtk-update-icon-cache /usr/share/icons/Humanity. But my action doesn't work. The files' icons remains the gnome style.
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Oct 21, 2010
I'm using rsync to create a mirror of the data files on our main server every day. I've looked at the man page, and can't see it; can I get a listing of the files that have been changed on or added to the mirror when it's completed? Can it just log what it's doing to a file?
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Sep 9, 2011
how rsync will handle disk images. Will rsync copy only the changed blocks of a vhd or a lun? This is what I've been told, but wouldn't this require overlaying a filesystem on the vhd? How would rsync handle copying a 500GB lun?
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Jan 4, 2016
Yesterday I installed some updates on my Jessie system (I don't remember if the kernel was also updated). After rebooting the system nothing happens after the "Loading intial ramdisk"-message. If I boot in recovery mode the boot stops at the message:
Code: Select allfb: switching to nouveaufb from simple
If I add "nouveau.modeset=0" temporary to the GRUB-entry for the recovery mode, it will boot up in the console-mode.
I was able to get an ethernet connection with "dhclient eth0" and removed the "xserver-xorg-video-nouveau" package. Then I installed it and the removed gnome-desktop again. Before removing it, aptitude said the following to the package:
Code: Select alli A xserver-xorg-video-nouveau
Now it only says:
Code: Select alli  xserver-xorg-video-nouveau
But this didn't change my problem. I found a similar case in the internet, but there were no solutions for it: [URL] ....
The next thing I would do, is to install the proprietary nvidia-drivers, but since I have a GTX 960 video card, I would have to use experimental drivers. So I'm afraid to make it more worse trying to install this drivers.
Also I'm not sure if it really is a driver-specific of kernel-specific problem. My kernel is version 3.16.0-4-amd64.
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Jan 24, 2016
I upgraded my server yesterday via apt-get and my Perl scripts are not able to make HTTPS connections due to certificate verification problems.
This seems to be a problem for EVERY HTTPS site.
CURL gives the following error:
Code: Select allSSL certificate problem: unable to get local issuer certificate
I know that this has something to do with root certificate updates, but if I sound ignorant about it, it's because I am.
using CURL with the -k option allows the connection to be made.
I'm running OpenSSl 1.0.1k-3+deb8u2 on Jessie 8.2.
I would obviously prefer to not disable certificate verification on my server.
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Jun 30, 2010
For anyone using Blueman with Testing (Squeeze), todays Python upgrade to version 2.6 stops it from working due to a Blueman bug. This has been fixed in blueman version 1.21-4, which you can install from SID if you don't want to wait the 10 days for the normal migration.
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Jun 21, 2011
Linux command to find files changed in last n seconds. shell script,that we can run from cli or command.
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Nov 3, 2010
I changed a few files in a couple of folders that are installed from a synaptic package. How can I save the changes as an installation package or save the changes to the package and save the package as a file?
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Nov 24, 2010
For the second time in a week, I have set up an unmanaged CentOS 5.5 Storm Server at StormOnDemand, only to discover a ton of unauthorized changes to binaries (updated file checksums and sizes) on the server shortly thereafter.The time stamps do NOT change.If the time stamps did change, I would be hunting down ahat was doing some auto-updates. But the time stamps are not changing.This leads me to believe that either these servers are suffering from:1. A virus or hacker is compromising the box.2. system corruption.3. Something else? To eliminate the possibility of number 1, I toasted the first server and started over with a new server and enabled their firewall from the start to only allow access for two IPs via SSH... my IP and my biz partner's.
Then, one of the first things we installed was a system we created that maintains a snapshot of most directories on the system so that it can be used to watch the live directories for changes. At 4:07am (server time) this morning, we received notice from this system that a massive number of files had changed in these directories. Again, no file time stamps changed.So, my question is this... is there any legitimate reason in a fairly standard CentOS 5.5 install that would cause so many files to change?
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