All our CentOS servers sync to a windows domain time server and we're migrating to a new CentOS time server. however in testing the setup with the clients I get the following
# ntpdate 10.10.31.211
16 Mar 09:20:46 ntpdate[2646]: no server suitable for synchronization found
checking to see if I can at least query...
# ntpdate -q 10.10.31.211
server 10.10.31.211, stratum 16, offset 17579.121921, delay 0.02591
16 Mar 09:08:07 ntpdate[2606]: no server suitable for synchronization found
I try to forward all the network traffic on specific port from my VPS to home PC.The problem is that I have dynamic IP at home so I've installed Dynamic Update Client (DUC) from no-ip.com.I also use 'redir' software on Centos VPS to redirect the traffic and everything works fine till my ISP change the IP of my home PC.Does Centos cache DNS queries by default (nscd is not running)?Is there a some way/software that will periodically check if the IP of particular domain has changed and update accordingly.
trying to configure a Centos 5.5 server (simple file server with DHCP and DNS relay). I configured and tested the config (by 'service dnsmasq configtest') of dnsmasq and I got the message 'dnsdomain:host unknown (translation of the real message : hte inconnu) and I didn't find where I could define this host ! The hostname of the server is well defined and I can see it from all Windows PC's on the LAN. dnsmasq starts (with hte same message as in configtest) but when querying DNS from PC's te.g. trying to surf the Internet), I don't get replies (3 DNS servers are also well defined and operational).
I am bit new to Linux and have setup caching-only name server with Centos 5.5. when i do dig server, it provide resolutions. but when i use the server IP as DNS on my windows client, it says, "connection refused" on the NSlookup output. (IP table didn't enable) My server Ip is 192.168.1.253 and bellow is the configuration of "/var/named/chroot/etc/named.conf"
I'm running a fresh install on an intel i7 system on an asus p6t deluxe v2 motherboard with the onboard NIC (Marvell Technology pci-e). I know the NIC is working as when I boot into the onboard OS that Asus provides (Asus Express Gate SSD)I have a working net connection.Booting up CentOS hangs at determining IP information for eth0 and eventually fails with the following error:PING xxx.170.30.1 from xxx.170.31.231 eth0: 56(84) bytes of data---xxx.170.30.1 ping statistics ---4 packets transmitted, o received, +3 errors, 100% packet loss, time 2999ms, pipe 3 failed.
I'm trying to install a dual booting machine with OpenSUSE v11.1 32bit and CentOS v5.2 64bit. I installed OpenSUSE first and allowed it to install and configure grub in the MBR and after that I wanted to proceed with CentOS v5.2. The installation went fine with two notable exceptions:- when I had to configure grub installation parameters, CentOS offered me only 2 solutions: either install it on the MBR of the first hard disk or not installing it at all. Other distributions are more flexible allowing you to install it in the boot sector of the root partition for example. Because I didn't want to ruin the existent grub onfiguration, I reluctantly accepted not to install it for CentOS assuming that I could manually configure the entry later in grub's menu.lst file.
- when I was presented with the options for software components installation, I've clicked on virtualization category/function because I intend to use the machine as a VMware host. There was no guidance on screen at that point and I blindly assumed that by choosing the virtualization function I would get necessary tools and drivers that will help me further on. It seems that this was a wrong move as you can see it below.
After completing the installation, I tried to search for a template or guiding on how the menu entry in menu.lst should look like but the grub directory was empty, not surprisingly because I've told CentOS earlier not to install it. Using the files in the /boot directory from the CentOS installation I tried to improvise a menu entry but it's not working. The boot stops with famous Error 13: Invalid or unsupported executable format. Using the file command to check what kind of files I'm trying to load as kernels I'm getting :
marte:~ # file /mnt/vmlinuz-2.6.18-92.el5xen /mnt/vmlinuz-2.6.18-92.el5xen: gzip compressed data, from Unix, last modified: Tue Jun 10 19:20:51 2008, max compression
I am trying to install Centos 5.6 on a motherboard with a built in Marvel 88SE61xx drive controller.NO drive arrays are configured using the Marvel BIOS configuration utility.During the install CENTOS displays loading MARVEL_PATA driver and it waits and waits and waits.Looking on one of the system message screens I get the following types of messages:qc timeoutfailed to identifyI/O errorLink is slow to respondSRST failed errno=16ata4: reset failed - giving upAny ideas as to how to get CENTOS to recognize the drives connected to the motherboard Marvell controller on a NON-RAID configuration?
I am trying to run though the qmailrocks setup on a centos 5.5 and I am running into an issue when trying to telnet to port 25:
telnet localhost 25 Trying 127.0.0.1... Connected to localhost.localdomain (127.0.0.1). Escape character is '^]'. Connection closed by foreign host.
Everything else seems to be working (telnet to 110), and I turned off the firewall entirely, but I still cannot telnet to port 25. I also get a blank error within squirrelmail when attempting to send mail out (ERROR:Message not sent. Server replied: ). I apologize for not going directly to the qmailrocks forum, but they are currently closed down (due to lack of funds). I also am a newbie, so I apologize for the lack of needed information. If anyone has any ideas, please let me know what information you would need.
i want to change my server to a intel d510mo withoutchanging the installation.The old nstallation runs on a centos 5.4 asus amd board witha sata raid, sata-sil adapter in no raid modus.and that is the problem.i boot the centos on the intel board, and only the sata-sil module is loaded, so noata drive is found.How can i change this? udev? i disabled the scsi-hostadapter in modprobe.conf, but no
I would like some help to run sql queries in Ubuntu. For a school IT project, we must write a Java program that runs queries. Seeing that I'm going away on holiday and will be away from my Win7 desktop, I will have to work on my Ubuntu laptop. When I run my program, I get these two sql exceptions:
Code:
sun.jdbc.odbc.JdbcOdbcDriver No suitable driver found for jdbc:odbc:ITPAT2010
Note: it is not my program that is causing the problem, since it works fine on Win7. But here's my code anyway:
Code:
void OpenDB() { System.out.println("INTO BRIDGE"); String url = "jdbc:odbc:ITPAT2010"; //JOU BRUG SE NAAM
[code]....
I believe the drivers that handles the connection to the database aren't installed. The format of my database is: *.accdb (was created on Win7 using Office 2010). I can't open this file, probably because I have no database programs installed?
i want to know about the partition size of linux in my system..i have pentium 4 with 512 mb ram and 15 gb hard disk for opensuse 11.1..i want to know how much space should be allocated for /,/home ,swap etc and under what kind of partition they should be formatted (like primary,logical,extended etc)...kindly help me in this regards...I have windows xp and want to install opensuse with it.
I am currently running the latest version of Bind, and for some completely unknown reason I can NOT get queries to work for PTR records. All queries to the servers for reverse name lookup get query denied:
Using domain server: Name: 66.150.173.1 Address: 66.150.173.1#53 Aliases:
Host 27.173.150.66.in-addr.arpa not found: 5(REFUSED)
And it shows in my logs:
I am at my wits ends with the piece of crap. Can anyone shine some light on why this damn Bind install won't respond to these queries?
I have internal-only email server that has internal BIND9 running. Thought it only has its IP address defined in /etc/resolv.conf, it is still resolving outside addresses.
How often are dns queries sent? Assume I want to connect to a ssh server, will I send one dns-query in order to do that or do I send multiple during my connection? What if I request web-pages, do I send a query only when I enter a site or will I send queries every time I visit a new page on that site?
I'm asking since I'm considering getting an account at dyn.com (the standard account for $30/yr) and it comes with 600 000 queries per month (which is way more than I expect to get but knowing exactly what it means is always good).
I set up a routed OpenVPN server. Everything works fine. But I'd like to route the DNS queries thru the tunnel too. So I added:
[Code]....
Can't find server name for address 10.8.0.1: Non-existent domain Even thou I have a DNS server set up correctly (on the same server as the VPN) with recursion. I verified that by sending queries form external source, which worked fine. I suspect that the Bind server doesn't listen to the tun0-interface only eth0, but the Bind manual says it should listen to all interfaces by default. The server log shows:
Code: named[9639]: client 10.8.0.10#3807: RFC 1918 response from Internet for 1.0.8.10.in-addr.arpa
How do I get these DNS queries to resolve thru the tunnel?
I have installed BIND 9.6.1-P3-RedHat-9.6.1-16.P3.fc12 on Fedora Core 12.
I found out that when i perform i DNS lookup to a some record that is not in the DNS cache or zones(means...recursive) it takes about 4 sec to give the IP results.
I dig a little bit on the internet and found out that it is a known issue but all places says that it is fixed on newer version of BIND (after version 9.3)
I tried:
1. start BIND with -4 argument ( named -4) - the server started but no changes on the delay.
2. disable IPV6 on the server - i tried the articles on the web but still i get IPV6 address.
Is there a way to run queries against a Microsoft sql server from linux? Here is what I would like to do. When I create apps that us db back end I would like to quickly check results of my queries. so if I could do something like "select * form Orders" from the terminal or another app that would be great.
I have a daily routine task of checking the size of mysql tables in a database in Mysql Database Server.
I want to achieve this task through a bash script that runs daily and calculate the size of mysql tables and finally mail it to DBA email-id fore.g adarsh.sharma@orkash.com
I have my bind9 DNS server running on Ubuntu with logging on. What's bothering me is that I have log full of localhost queries instead of from IP of the computer which actually asked.DNS queries log:/var/log/named.queries.log
Code: 24-Feb-2011 16:01:19.413 client 127.0.0.1#38022: query: clients4.google.com IN A + (127.0.0.1)
I am using Redhat cluster suite. I am trying to configure cluster on linux using command line tools. I have following queries. Please answer them as early as possible.
1.Can I add node in cluster without adding fence device using command line tool? If yes then how?
2.I want to add failover domain in cluster. How can I add it using command line tool?
3.I want to add resources in cluster. How can I add it using command line tool?
4.I want to define services in cluster. How can I define them using command line tool?
However I just built a 10.10 server, installed webmin, vmware, and the server is working perfectly. I configured my bind 9 server using the latest webmin and on the server everything resolves perfectly to both the internet and lan. I have it set to 127.0.0.1, the server ip address is 10.1.50.25. However, it will not accept dns client queries in which they cannot resolve to the lan or internet. I have the dhcp giving out the dns server 10.1.50.25. NSLOOKUPS from the client show query refused. I know there has to be some setting or config that will allow clients to query but I am not able to locate it, and I am not totally knowledgeable of named.conf and been all through the webmin module and configuration settings.
1. What difference will it make if I set the mount point to "/" instead of "/boot" and vice-versa ?
2. I heard somewhere that the data on a primary partition can be easily recovered in case of some failure.
If it is so then what out of the following should IDEALLY be created as primary partition ? /usr /home /boot
I think /usr and /home both need a primary partition , then what about /boot, Will I be not able to recover something in case of failure if I don't set /boot as a primary partition ?
I got a mission to move our company's ns3 from one machine to another.I've installed the djbdns software on other machine, configured it(or at least I think soand if I make a "nslookup www.google.com 195.222.14.7" query from that paticular server then I get an answer straight away, but if i make the same query from local machine i get connection timed out
I currently have 2 operating systems on my main hdd: Ubuntu and WinXP My current setup - [storage NTFS partition, solely data][17GB WinXP partition][{extended partion}Ubuntu + swap]: [URL] I have a second SATA hdd that I would like to install Arch Linux on to. It uses GRUB Legacy, and Ubuntu uses GRUB 2. I would like to know how I would go about booting this, and figure out where my current bootloader is installed to. i.e. /dev/sda or /dev/sda5 (the / ubuntu partiton)
