06-24-2010
DNS and NTP strange problem
Hi,
I'm having problem with my DNS and NTP.
For the DNS:
I'm using RHEL4, Bonding and heartbeat.
Bond0 IP address: 192.168.1.10
Heartbeat or Bond0:0: 192.168.1.50
Currently, I use my heartbeat ip address for my DNS or in named.conf
Everytime I reboot my server, it says that dns/named successfully started but when I type nslookup in shell, it did not show anything at all. But when I restart named by using "/etc/init.d/named restart" I able to nslookup my dns configuration.
I'm confused, what's going on? shouldnt redhat startup process starts my named? why do I need to restart again.. anyone can help?
--------------------------------------------------------------
For the NTP:
I'm using RHEL4, Bonding and heartbeat.
Bond0 IP address: 192.168.1.10
Heartbeat or Bond0:0: 192.168.1.50
I use NTP for server and client. I set my NTP configuration using my heartbeat IP (192.168.1.50)
I able to sync from server to client, the problem is also after I reboot the server. the ntpd is running, but when I trace the wireshark from my server, actually my server send the packets by using my bond0 ip address (192.168.1.10) instead using my heartbeat ip (192.168.1.50).
But when I restart ntpd "/etc/init.d/ntpd restart"
I trace again from wireshark, the server starts to send packets using my heartbeat ip address (192.168.1.50) which is the way it supposed to be.
I'm confused, whats happening here? is it because my named and ntpd starts before the heartbeat starts during the startup process when I reboot the server?
is there a way to tweak the named and ntpd to start after the heartbeat starts?
Thank You.
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LEARN ABOUT OSX
internetsharing
InternetSharing(8) BSD System Manager's Manual InternetSharing(8)
NAME
InternetSharing -- simple NAT/router configuration daemon
SYNOPSIS
InternetSharing -d
DESCRIPTION
InternetSharing is the back-end for the Internet Sharing feature. It is responsible for configuring the network interfaces, the DHCP server
bootpd(8), the network address translation daemon natd(8), and the Internet domain name server named(8). named(8) is run in caching-only
mode and allows the DHCP server to always offer the same DNS server address to the DHCP clients, regardless of the value of the actual DNS
server addresses.
The single command line option -d places additional debugging information to stdout/stderr.
InternetSharing is launched by launchd(8) both at start-up and when the user turns Internet Sharing on in the Sharing preferences pane.
By default, InternetSharing configures the IP addresses for non-AirPort interfaces starting at 192.168.2.1, walking up by one class C network
(subnet mask 255.255.255.0) for each subsequent interface i.e. 192.168.3.1, 192.168.4.1, 192.168.5.1, and so on. The AirPort interface by
default is assigned 10.0.2.1.
CONFIGURATION
InternetSharing reads the property list com.apple.nat.plist stored in the /Library/Preferences/SystemConfiguration.
Details of the com.apple.nat.plist are subject to change and are not completely documented here. The plist is a contract between the Sharing
preferences pane and InternetSharing. Any details provided here are for informational purposes only.
The plist is a dictionary with a single sub-dictionary called NAT containing properties to control which interfaces to use and other set-
tings. It may also have a sub-dictionary called AirPort that is used to configure the AirPort interface when it is put into access point
mode.
One property worth mentioning is SharingNetworkNumberStart. This property controls the behavior of InternetSharing when it configures IP
addresses for the local interfaces. The property is encoded as a string containing the dotted decimal network IP address, assumed to be a
class C network. For example:
<key>SharingNetworkNumberStart</key>
<string>192.168.100.0</string>
If the SharingNetworkNumberStart appears directly in the NAT dictionary, it controls the starting IP address chosen for the non-AirPort
interfaces. If the property appears within the AirPort sub-dictionary, it controls the IP address assigned to the AirPort interface.
The purpose of the property is to allow the user to avoid address collisions with existing NAT'd networks.
SEE ALSO
bootpd(8), launchd(8), natd(8), named(8)
Mac OS X Feburary 26, 2007 Mac OS X