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Re: [K12OSN] Replacing a server

John Lucas wrote:
On Tuesday 10 July 2007 10:27, Mark Cockrell wrote:
I want to replace my current K12LTSP 4.4.1 box with a new K12LTSP/ 5.0EL
box, and I need a little advice.  My current box is our primary
authentication server using Samba/LDAP thanks to Matt Oquist's wonderful
script.  What's the best way to migrate that data to the new server?  I
had planned to just install 5.0EL on the new machine, run the smb-ldap
script and then do a slapadd of my most recent backup, but it seems that
Matt's script isn't yet ready to handle CentOS 5 or it's K12LTSP
derivative.   I'm at a loss as to what I should do.  What do any of you

As a test (on a temporary virtual machine), I tried using the smbldap installer scripts with CentOS5 and I was able to get it to work. I wish I had taken notes, but as I recall I added/activated the "rpmforge" repository and installed the dependant packages *before* I ran the script, choosing CentOS 4.4 as the installation target. The idea was to minimize the number of packages that smbldap-installer had to fetch by installing the versions that were correct for CentOS, leaving only the configuration steps for the scripts to perform. At any rate I was able to get it working.

I've taken the bits below from my wiki page I created, it should allow you to get the script working, only thing I think I've missed is the smbldap-tools that you'll need to create users etc but the script should install that for you.



You should make sure that you have ProtectBase installed. yum-protectbase is available in the CentOS 5 repositories:

   yum install yum-protectbase

Plugins are enabled in CentOS 5 by default.

Edit the file /etc/yum.repos.d/CentOS-Base.repo and add the following line to the [base] and [update] and [centosplus] section:


Leave the [centosplus] section disabled:


Edit /etc/yum.repos.d/CentOS-Base.repo and add the following line to the other sections


Download the rpmforge-release package.

    wget http://apt.sw.be/redhat/el5/en/x86_64/RPMS.dag/rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm

(You can find a complete list of rpmforge-release package packages at http://dag.wieers.com/packages/rpmforge-release/ but it is recommended that you use one of the two listed above).

Install DAG's GPG key

    rpm --import http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt

Verify the package you have downloaded

    rpm -K rpmforge-release-0.3.6-1.el5.rf.*.rpm

Security warning: The rpmforge-release package imports GPG keys into your RPM database. As long as you have verified the package and trust Dag then it should be safe.

Install the package

   rpm -i rpmforge-release-0.3.6-1.el5.rf.*.rpm

This will add a yum repository config file and import the appropriate GPG keys.

Test with this command:

   yum check-update

It should output these two lines:

Loading "protectbase" plugin ... 76 packages excluded due to repository protections

The number above may differ, but there should be several packages shown as being excluded.

Install Extra Packages

   yum install ntp
   yum install apcupsd

Install needed rpms for Samba3 / Openldap (found from Smbldap installer script)

yum install perl-XML-SAX-Base perl-Unicode-String perl-IO-Socket-SSL perl-Crypt-SmbHash perl-Convert-BER

Install actual servers & dependants

  yum install perl-URI perl-Convert-ASN1 perl-libwww-perl
  yum install perl-XML-NamespaceSupport perl-URI perl-Crypt-SSLeay
  yum install perl-Digest-SHA1 perl-LDAP
  yum install gcc glibc-headers
  yum install openldap-servers openldap-clients
  yum install samba-common samba
  yum install apcupsd
  yum install net-snmp

Install Webmin for easy configuration (example below is current version but visit www.webmin.com for latest version)

  wget http://prdownloads.sourceforge.net/webadmin/webmin-1.340-1.noarch.rpm
  rpm -U webmin-1.340-1.noarch.rpm

   The views expressed here are my own and not necessarily

the views of Portsmouth College
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