biolocal:ServerConfigurationDns

From Wiki CEINGE

Configuration active on centos5srv

ceingemail
ceingeauth01
ceingeauth02
ceingewebmail
ceingefs
ceingestg
ceingeweb
ceingevls
biodb
ceingenagios
ceingeservchair

search computing.ceinge.unina.it
nameserver 127.0.0.1
nameserver 192.168.191.7 (auth01)
nameserver 192.168.191.8 (auth02)

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Configuration activated on CLST_CENTOS nodes

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nameserver 192.168.191.7 #(auth01)
nameserver 192.168.191.8 #(auth02)

N.B. these configurations are automatically generated by dhclient-script running on each server, and depends on parameters of /etc/dhcpd.conf located in clustermanager. So, any changes must be done by modifying /etc/dhcpd.conf on clustermanager.

From Manpage of dhclient-script:

The DHCP client network configuration script is invoked from time to time by dhclient. This script is used by the dhcp client to set each interface's initial configuration prior to requesting an address, to test the address once it has been offered, and to set the interface's final configuration once a lease has been acquired. If no lease is acquired, the script is used to test predefined leases, if any, and also called once if no valid lease can be identified.

This script is not meant to be customized by the end user. If local customizations are needed, they should be possible using the enter and exit hooks provided. These hooks will allow the user to override the default behaviour of the client in creating a /etc/resolv.conf file.

In case of other servers (i.e. with no access to private network or not-diskless) the configuration is:

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nameserver 127.0.0.1
nameserver 143.225.151.25 #(auth01)
nameserver 143.225.151.32 #(auth02)