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Freeipa Install

Introduction

Add the host records in DNS, both forward and reverse 2. Make sure that the client is synchronized to the ntp server. On the IPA Server add the host principal and set the password for the xp client.
# yum install freeipa-server Note that the installed package just contains all the bits that FreeIPA uses, it does not configured the actual server. Configure a FreeIPA server. The command can take command arguments or can be run in the interactive mode.

Installing a FreeIPA Server The FreeIPA domain is defined and managed by a FreeIPA server which is essentially a domain controller. There can be multiple domain controllers within a domain for load-balancing and failover tolerance. These additional servers are called replicas of the master FreeIPA.

The following documentation is a practical guide to implement freeIPA in mixed environment (Windows/Linux Clients). You should also refer the Administrator's as well as Installation and Deployment guide from the main documentation page.

The Installation has been performed on the following environment.

Server: Single IPA server (Fedora 15 x86_64) with 2G RAM 1.6 GHz Intel Dual Core processor.

Clients: Windows XP SP2, Fedora 15 x86_64 and RHEL5.6 x86_64

Note: Please be careful about the firewall and selinux policies before continuing with the configuration. In windows also you should open the necessary ports to communicate to the IPA Server or disable the firewall if you are doing a test setup. Please refer the installation and deployment guide to get more details about the ports required for IPA.

1. Installation of the IPA Server using DNF:

Or with YUM:

The IPA server may show a conflict with mod_ssl package. IPA uses mod_nss in apache. You can remove the mod_ssl for the time being.

2.Make sure that the host names are set properly

3. Run the following command to configure the IPA Server for you environment and follow the instructions.

Here the DNS Server is on the same machine. Please note that kerberos server has very specific DNS requirements, if you have a DNS server already on your network add the SRV records of the kerberos, ntp and ldap server to that. A sample zone file will be created in your /tmp directory after the ipa-server-install, do a copy paste of all the SRV record from this file to your zone file.

If you have a chrooted bind installed, the named service start-up may fail after the ipa-server-install . Do the following configuration to setup DNS properly.

a. A minimal named.conf should look like

b. Copy the zone file to the proper location and create a reverse zone file also.

No need to change anything in the forward zone file, create a reverse zone as follows.

c. Restart the named service

4. Check whether the ntp time synchronization is proper, if you don't want to sync to an external time server, configure a local time server and synch all the clients to that.

Sample configuration file for an ntp local server.

Sample Configuration for an ntp client

Please note that if the client time has much difference compared to ntp server then do a force update using the following command. Also, the first time synchronization will take some time (64 sec approx)

To verify

5. Make sure that all the required services are enabled in your run level and reboot the IPA server (krb5kdc, ntp, named, httpd, dirserv etc). This will be configured automatically when you run the ipa-server-install, anyway just do a second check.

6. After the reboot test the IPA server configuration using the following commands

Configuring Windows Client

1. Add the host records in DNS, both forward and reverse

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2. Make sure that the client is synchronized to the ntp server.

3. On the IPA Server add the host principal and set the password for the xp client.

4. On the Client (Windows XP)

a. Install Windows XP support tools (WindowsXP-KB838079-SupportTools-ENU.exe, this can be found on the Windows XP Media or download it from microsoft)

b. Create a user in Windows XP to map the kerberos principles (here it is ipauser)

c. Configure kerberos authentication as follows (go to Start - Programs - Windows Support Tools - Command Prompt )

d. Reboot the machine.

e. You will see 'EXAMPLE.COM (Kerberos Realm)' in the windows logon drop down menu.

Note: CREATE A NEW USER ON THE IPA SERVER AND TRY TO LOGON TO THE WINDOWS CLIENT. WINDOWS WILL TELL YOU THAT THE PASSWORD HAS BEEN EXPIRED. IT WILL PROMPT YOU TO SET THE NEW PASSWORD ALSO. IF YOU ENTER YOUR USER NAME, OLD PASSWORD AND NEW PASSWORDS, WINDOWS WILL SIMPLY TELL YOU 'DOMAIN NOT AVAILABLE

HERE IS THE TRICK, PLEASE NOTE THAT THE USER IS REQUIRED TO LOGIN USING “USER@REALM” (testuser@EXAMPLE.COM) INSTEAD OF JUST THE USER NAME FOR THE FIRST TIME.

Configuring RHEL 5.2 x86_64 Client

1. Download and un-compress freeipa source, http://freeipa.org/downloads/src/freeipa-1.2.1.tar.gz

2. Install the following prerequisites using DNF:

Or with YUM:

3. You will also need to downloaded and install python-krbV package from http://download.fedora.redhat.com/pub/epel/

4. Apply the patch

5. Make rpms, the rpms will be in dist/rpms

--viji 10:39, 3 March 2009 (UTC)

At SANBI we’ve been using an old combination of OpenLDAP + Kerberos and nsswitch to provide LDAP with NFS directories for user accounts for our virtual machines and HPC cluster. This was originally put in place to make authentication into machines easier and to allow users to access and use the cluster without manual setup of directories and user accounts. Over time this set-up has grown to be messy and more effort to maintain than worth while.

This prompted the decision to look at alternatives. Enter FreeIPA. The main attraction to using FreeIPA is that it is much easier to use from a management and maintenance point of view. This, coupled with the fact that it’s a lot more self-contained than the original set-up prompted me to try to play around with it.

The blog post details the steps followed to set up the FreeIPA environment on servers and clients.

Server

I created virtual machine on the same host that runs the old authentication services, for the sake of keeping sanity. This system will be replaced with an OpenStack deployment that will eventually be used for systems services as well as research work at some future point (blog post on that later). The virtual machine was configured in the following way:

Hostname: freeipa.sanbi.ac.za
IP address: 192.168.2.220
1vCPU / 1GB RAM / 50GB disk

I started with a system update. The usual will suffice:

Once done it’s time to install the FreeIPA stuff. This can be done through the following:

This installed around 550MB worth of files + dependencies.

Installer configuration

During the install you’ll be prompted with some configuration UIs. The first one you see will be to configure the Kerberos Realm configuration. Here you’ll enter the name you want the realm to be. The default is often your DNS domain, but in uppercase. I chose SANBI.AC.ZA.

The next prompt will be for a kerberos server(s), I for the initial set-up I used the FreeIPA (freeipa.sanbi.ac.za) server as the Kerberos server as well. The prompt after that asks which server acts as the administrative server, which would be freeipa.sanbi.ac.za. Finally, on the krb5-admin-server prompt, press OK.

Post-install configuration

Once the apt installer is complete, run the following command:

Here you’ll be presented with a bunch of configuration options. Here’s a list of the options I chose:

Do you want to configure integrated DNS (BIND)? [no]:no
- We

Free Ipa Install