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FreeIPA : サーバーの設定
2015/03/21
 
各サーバー間でユーザーのアカウント情報を共有できるように FreeIPA サーバーを構築します。
[1] FreeIPA をインストールします。
[root@dlp ~]#
yum -y install ipa-server ipa-server-dns
[2] FreeIPA をセットアップします。当例では FreeIPA サーバー上に同時に FreeIPA 内蔵 DNS もセットアップします。
# 自身のホスト名を hosts に登録

[root@dlp ~]#
echo '10.0.0.30 dlp.ipa.srv.world dlp' >> /etc/hosts

[root@dlp ~]#
ipa-server-install --setup-dns

The log file for this installation can be found in /var/log/ipaserver-install.log
==============================================================================
This program will set up the IPA Server.

This includes:
  * Configure a stand-alone CA (dogtag) for certificate management
  * Configure the Network Time Daemon (ntpd)
  * Create and configure an instance of Directory Server
  * Create and configure a Kerberos Key Distribution Center (KDC)
  * Configure Apache (httpd)
  * Configure DNS (bind)
  * Configure the KDC to enable PKINIT

To accept the default shown in brackets, press the Enter key.

WARNING: conflicting time&date synchronization service 'chronyd' will be disabled
in favor of ntpd

Enter the fully qualified domain name of the computer
on which you're setting up server software. Using the form
<hostname>.<domainname>
Example: master.example.com.

# ホスト名を確認して Enter
Server host name [dlp.ipa.srv.world]:

Warning: skipping DNS resolution of host dlp.ipa.srv.world
The domain name has been determined based on the host name.

# ドメイン名を確認して Enter
Please confirm the domain name [ipa.srv.world]:

The kerberos protocol requires a Realm name to be defined.
This is typically the domain name converted to uppercase.

# Realm 名を確認、または変更して Enter
Please provide a realm name [IPA.SRV.WORLD]:
Certain directory server operations require an administrative user.
This user is referred to as the Directory Manager and has full access
to the Directory for system management tasks and will be added to the
instance of directory server created for IPA.
The password must be at least 8 characters long.

# Directory Manager のパスワード設定
Directory Manager password:
Password (confirm):

The IPA server requires an administrative user, named 'admin'.
This user is a regular system account used for IPA server administration.

# IPA admin のパスワード設定
IPA admin password:
Password (confirm):

Checking DNS domain ipa.srv.world., please wait ...
# DNS forwarder を設定しない場合は no で応答
Do you want to configure DNS forwarders? [yes]:
Following DNS servers are configured in /etc/resolv.conf: 10.0.0.10
# DNS forwarder を設定する場合 且つ resolv.conf と同設定で OK ではない場合は no で応答
Do you want to configure these servers as DNS forwarders? [yes]:
All DNS servers from /etc/resolv.conf were added. You can enter additional addresses now:
Enter an IP address for a DNS forwarder, or press Enter to skip:
Checking DNS forwarders, please wait ...
DNS server 10.0.0.10: answer to query '. SOA' is missing DNSSEC signatures (no RRSIG data)
Please fix forwarder configuration to enable DNSSEC support.
(For BIND 9 add directive "dnssec-enable yes;" to "options {}")
WARNING: DNSSEC validation will be disabled
Do you want to search for missing reverse zones? [yes]:

The IPA Master Server will be configured with:
Hostname:       dlp.ipa.srv.world
IP address(es): 10.0.0.30
Domain name:    ipa.srv.world
Realm name:     IPA.SRV.WORLD

BIND DNS server will be configured to serve IPA domain with:
Forwarders:       10.0.0.10
Forward policy:   only
Reverse zone(s):  No reverse zone

# 設定を確認して yes で進む
Continue to configure the system with these values? [no]: yes

The following operations may take some minutes to complete.
Please wait until the prompt is returned.

Configuring NTP daemon (ntpd)
  [1/4]: stopping ntpd
  [2/4]: writing configuration
  [3/4]: configuring ntpd to start on boot
  [4/4]: starting ntpd
Done configuring NTP daemon (ntpd).
Configuring directory server (dirsrv). Estimated time: 30 seconds
  [1/45]: creating directory server instance
  [2/45]: enabling ldapi
  [3/45]: configure autobind for root

.....
.....

Client configuration complete.
The ipa-client-install command was successful

==============================================================================
Setup complete

Next steps:
        1. You must make sure these network ports are open:
                TCP Ports:
                  * 80, 443: HTTP/HTTPS
                  * 389, 636: LDAP/LDAPS
                  * 88, 464: kerberos
                  * 53: bind
                UDP Ports:
                  * 88, 464: kerberos
                  * 53: bind
                  * 123: ntp

        2. You can now obtain a kerberos ticket using the command: 'kinit admin'
           This ticket will allow you to use the IPA tools (e.g., ipa user-add)
           and the web user interface.

Be sure to back up the CA certificates stored in /root/cacert.p12
These files are required to create replicas. The password for these
files is the Directory Manager password
[3] Kerberos チケットを取得し、デフォルトシェルを明示的に bash に変更しておきます。
[root@dlp ~]#
kinit admin

Password for admin@IPA.SRV.WORLD:    
# IPA admin パスワード

[root@dlp ~]#
klist

Ticket cache: KEYRING:persistent:0:0
Default principal: admin@IPA.SRV.WORLD

Valid starting       Expires              Service principal
08/08/2018 19:49:54  08/09/2018 19:49:51  krbtgt/IPA.SRV.WORLD@IPA.SRV.WORLD

[root@dlp ~]#
ipa config-mod --defaultshell=/bin/bash

  Maximum username length: 32
  Home directory base: /home
  Default shell: /bin/bash
  Default users group: ipausers
  Default e-mail domain: ipa.srv.world
  Search time limit: 2
  Search size limit: 100
  User search fields: uid,givenname,sn,telephonenumber,ou,title
  Group search fields: cn,description
  Enable migration mode: FALSE
  Certificate Subject base: O=IPA.SRV.WORLD
  Password Expiration Notification (days): 4
  Password plugin features: AllowNThash, KDC:Disable Last Success
  SELinux user map order: guest_u:s0$xguest_u:s0$user_u:s0$staff_u:s0-s0:c0.c1023$unconfined_u:s0-s0:c0.c1023
  Default SELinux user: unconfined_u:s0-s0:c0.c1023
  Default PAC types: MS-PAC, nfs:NONE
  IPA masters: dlp.ipa.srv.world
  IPA CA servers: dlp.ipa.srv.world
  IPA NTP servers: dlp.ipa.srv.world
  IPA CA renewal master: dlp.ipa.srv.world
  IPA master capable of PKINIT: dlp.ipa.srv.world
[4] Firewalld を有効にしている場合は FreeIPA サービス、および内蔵 DNS を使用している場合は DNS サービスの許可が必要です。
[root@dlp ~]#
firewall-cmd --add-service={freeipa-ldap,freeipa-ldaps,dns,ntp} --permanent

success
[root@dlp ~]#
firewall-cmd --reload

success
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