On 24/04/16 04:46, Anthony Clark wrote:
Hello All,

TL;DR: what's the best way to grab a SSL cert and key during kickstart?

(this is all using CentOS 7.2 latest)

I'm using Foreman to manage my kickstart and Puppet services, and its built-in
FreeIPA client enrollment works just fine.

However I'd like to also request a certificate and key for a Puppet client to
use to authenticate to the Foreman-controlled Puppet server.

If I manually set up a puppet client then it works just fine.  I use something
like this:

# ipa-getcert request -w -r -f /var/lib/puppet/ssl/certs/<%= @host.name
<http://host.name> %>.pem -k /var/lib/puppet/ssl/private_keys/<%= @host.name
<http://host.name> %>.pem
# cp /etc/ipa/ca.crt /var/lib/puppet/ssl/certs/ca.pem

(then setting the correct paths and settings in /etc/puppet/puppet.conf)

I tried to make that work inside the Kickstart process, but as those commands
are running inside a kickstart chroot the certmonger service won't start.

Is there a better method to grab a SSL cert and key for the host during
kickstart?  Or should I just wait until firstboot and perform the steps at that

Many Thanks and FreeIPA is really amazing!

Anthony Clark

Hello Anthony,

TL;DR Set DBUS_SYSTEM_BUS_ADDRESS=unix:path=/dev/null in kickstart chroot environment before calling "ipa-getcert request".

The issue is already addressed by BZ1134497 [1]. When getcert detects there is no DBus it starts certmonger and communicates over unix socet. But in Kickstart environment DBus is available but unusable (BZ1271551, [2]). It can be workaround by setting DBUS_SYSTEM_BUS_ADDRESS=unix:path=/dev/null (it is described in Doc Text of [1]).

You can also run ipa-client-install with --request-cert and it will also request certificate for the client. And also require the workaround in Kickstart chroot environment. But unlike "ipa-getcert request -w" it won't wait for the certificate to be issued and fetched.

The reason is that it can take days for certificate to be issued (some CAs require human approval) so ipa-client-install only submit the request and doesn't wait for certificate. After the installation completes and system is started certmonger periodically query for the certificate and fetch it when available.

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1134497
[2] https://bugzilla.redhat.com/show_bug.cgi?id=1271551

David Kupka

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