6.2. Interactive installation of an IdM server without integrated DNS and with an external CA as the root CA

Procedure

1. Run the ipa-server-install utility with the --external-ca option.

   • If you are using the Microsoft Certificate Services (MS CS) CA, also use the --external-ca-type option and, optionally, the --external-ca-profile option:

     [root@server ~]# ipa-server-install --external-ca --external-ca-type=ms-cs --external-ca-profile=<oid>/<name>/default

   • If you are not using MS CS to generate the signing certificate for your IdM CA, no other option may be necessary:

     # ipa-server-install --external-ca

2. The script prompts to configure an integrated DNS service. Press Enter to select the default no option.

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

3. The script prompts for several required settings and offers recommended default values in brackets.

   • To accept a default value, press Enter.

   • To provide a custom value, enter the required value.

     Server host name [server.idm.example.com]:
     Please confirm the domain name [idm.example.com]:
     Please provide a realm name [IDM.EXAMPLE.COM]:

     警告

     Plan these names carefully. You will not be able to change them after the installation is complete.

4. Enter the passwords for the Directory Server superuser (cn=Directory Manager) and for the IdM administration system user account (admin).

   Directory Manager password:
   IPA admin password:

5. Enter yes to confirm the server configuration.

   Continue to configure the system with these values? [no]: yes

6. During the configuration of the Certificate System instance, the utility prints the location of the certificate signing request (CSR): /root/ipa.csr:

   ...
   
   Configuring certificate server (pki-tomcatd): Estimated time 3 minutes 30 seconds
     [1/8]: creating certificate server user
     [2/8]: configuring certificate server instance
   The next step is to get /root/ipa.csr signed by your CA and re-run /sbin/ipa-server-install as:
   /sbin/ipa-server-install --external-cert-file=/path/to/signed_certificate --external-cert-file=/path/to/external_ca_certificate

   When this happens:

   1. Submit the CSR located in /root/ipa.csr to the external CA. The process differs depending on the service to be used as the external CA.

   2. Retrieve the issued certificate and the CA certificate chain for the issuing CA in a base 64-encoded blob (either a PEM file or a Base_64 certificate from a Windows CA). Again, the process differs for every certificate service. Usually, a download link on a web page or in the notification email allows the administrator to download all the required certificates.

      重要

      Be sure to get the full certificate chain for the CA, not just the CA certificate.

   3. Run ipa-server-install again, this time specifying the locations and names of the newly-issued CA certificate and the CA chain files. For example:

      # ipa-server-install --external-cert-file=/tmp/servercert20170601.pem --external-cert-file=/tmp/cacert.pem

7. The installation script now configures the server. Wait for the operation to complete.

8. The installation script produces a file with DNS resource records: the /tmp/ipa.system.records.UFRPto.db file in the example output below. Add these records to the existing external DNS servers. The process of updating the DNS records varies depending on the particular DNS solution.

   ...
   Restarting the KDC
   Please add records in this file to your DNS system: /tmp/ipa.system.records.UFRBto.db
   Restarting the web server
   ...

   重要

   The server installation is not complete until you add the DNS records to the existing DNS servers.