Red Hat Summit21.3. Installing an IdM replica with integrated DNS and no CA
Follow this procedure to install an Identity Management (IdM) replica:
- With integrated DNS
- Without a certificate authority (CA) in an IdM environment in which a CA is already installed. The replica will forward all certificate operations to the IdM server with a CA installed.
In contrast, when installing a replica with integrated DNS and without a CA in a CA-less IdM environment, you must specify certificate files using additional options, specifically:
- --dirsrv-cert-file
- --dirsrv-pin
- --http-cert-file
- --http-pin
You must also specify one of the following options:
- --no-pkinit
- --pkinit-cert-file and --pkinit-pin
For example:
ipa-replica-install --setup-dns --forwarder 192.0.2.1 --dirsrv-cert-file /tmp/server.crt --dirsrv-cert-file /tmp/server.key --dirsrv-pin secret --http-cert-file /tmp/server.crt --http-cert-file /tmp/server.key --http-pin secret --no-pkinitFor details about the files, see Certificates required to install an IdM server without a CA.
Prerequisites
- Ensure your system is prepared for an IdM replica installation.
Procedure
Enter
ipa-replica-installwith these options:-
--setup-dnsto configure the replica as a DNS server -
--forwarderto specify a per-server forwarder, or--no-forwarderif you do not want to use any per-server forwarders. To specify multiple per-server forwarders for failover reasons, use--forwardermultiple times.
For example, to set up a replica with an integrated DNS server that forwards all DNS requests not managed by the IdM servers to the DNS server running on IP 192.0.2.1:
# ipa-replica-install --setup-dns --forwarder 192.0.2.1참고The
ipa-replica-installutility accepts a number of other options related to DNS settings, such as--no-reverseor--no-host-dns. For more information about them, see theipa-replica-install(1) man page.-
After the installation completes, add a DNS delegation from the parent domain to the IdM DNS domain. For example, if the IdM DNS domain is
idm.example.com, add a name server (NS) record to theexample.comparent domain.중요Repeat this step each time after you install an IdM DNS server.
Next steps
- In large deployments, you might want to tune specific parameters of IdM replicas for better performance. Consult the Tuning Performance in Identity Management title to find tuning instructions to best suit your scenario.
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