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Using_FreeIPA_CA_for_Puppet

Using_FreeIPA_CA_for_Puppet#

Following/updating this (a bit outdated) blog post along with Puppet Labs’ instructions on setting up Puppet with an external Certificate Authority.

Initial Setup#

  1. Need three Fedora 19 machines: IPA Server (ipaserver.example.com), Puppet Master (puppetmaster.example.com), Puppet Agent (puppet.example.com).

  2. Set up the IPA Server on one machine (yum install freeipa-server; ipa-server-install). Be sure that the firewall is setup appropriately.

  3. Enrolled the other two machines as IPA clients(yum install freeipa-client; ipa-client-install). Be sure that the firewall is setup appropriately.

  4. On the IPA Server, or if one of the clients has freeipa-admintools installed:

    # create the puppet master service
$ ipa service-add puppetmaster/puppetmaster.example.com
# create the puppet agent service
$ ipa service-add puppet/puppet.example.com

Puppet Master setup#

On the machine for the Puppet Master:

  1. Installation:

    # install latest puppet-server
# (yum install puppet-server is a couple minor versions behind)
# version 3.2 fixes a CA bug that isn't in the yum repo
$ rpm -ivh http://yum.puppetlabs.com/fedora/f19/products/i386/puppetlabs-release-19-2.noarch.rpm
$ yum install -y http://yum.puppetlabs.com/fedora/f19/products/x86_64/puppet-server-3.2.4-1.fc19.noarch.rpm
# stop the puppetmaster service since we'll be using apache
$ service puppetmaster stop
# install additional requirements
$ yum install -y mod_nss mod_passenger

  2. Setting up the certificates:

    # now grab the certs for the master
$ ipa-getcert request -K puppetmaster/puppetmaster.example.com
                       -d /etc/httpd/alias
                       -n puppetmaster/puppetmaster.example.com
# identify where to put the public, private, and CA pem files for host:
$ puppet master --configprint hostcert
/var/lib/puppet/ssl/certs/puppetmaster.example.com.pem
$ puppet master --configprint hostprivkey
/var/lib/puppet/ssl/private_keys/puppetmaster.example.com.pem
$ puppet master --configprint localcacert
/var/lib/puppet/ssl/certs/ca.pem
# you may need to create the above directories
# grab the public key for host and place it in the appropriate directory
$ certutil -L -d /etc/pki/nssdb
           -a -n "IPA Machine Certificate - puppetmaster.example.com" >
           /var/lib/puppet/ssl/certs/puppetmaster.example.com.pem
# if there's an error about the directory, set SELinux to permissive for the
# certutil commands, then you can return it to enforce.
# grab the private key for host and place it in the appropriate directory
# if/when prompted for a password, this is the same admin password that you used to setup IPA
$ certutil -K -d /etc/pki/nssdb -a
$ pk12util -o keys.p12
           -n "IPA Machine Certificate - puppetmaster.example.com"
           -d /etc/pki/nssdb
$ openssl pkcs12 -in keys.p12
                   -out /var/lib/puppet/ssl/private_keys/puppetmaster.example.com.pem
                   -nodes
# export IPA's CA in the localcacert directory
$ certutil -L -d /etc/pki/nssdb
           -a -n "IPA CA" > /var/lib/puppet/ssl/certs/ca.pem

  3. Setup rack/passenger

    $ mkdir -p /var/www/puppet/public
$ cp /usr/share/puppet/ext/rack/files/config.ru /var/www/puppet

  4. Setup the master configuration in /etc/puppet/puppet.conf by adding:

    [master]
    ca = false
    certificate_revocation = false
    certname = 'puppetmaster.example.com'

  5. Setup NSS in /etc/httpd/conf.d/nss.conf:

    LoadModule          nss_module modules/libmodnss.so
AddType             application/x-x509-ca-cert .crt
AddType             application/x-pkcs7-crl    .crl
NSSPassPhraseDialog     builtin
NSSPassPhraseHelper     /usr/sbin/nss_pcache
NSSSessionCacheSize     10000
NSSSessionCacheTimeout      100
NSSSession3CacheTimeout     86400
NSSRandomSeed           startup builtin
NSSRenegotiation        off
NSSRequireSafeNegotiation   off

Listen 8140
<VirtualHo8140>
    ServerName  puppetmaster.example.com
    ServerAdmin puppetmaster@example.com

    NSSEngine           on
    NSSCertificateDatabase  /etc/httpd/alias
    NSSNickname         "puppetmaster/puppetmaster.example.com"
    NSSOptions          +StdEnvVars
    NSSEnforceValidCerts        on
    NSSVerifyClient         require
    NSSProtocol         SSLv3,TLSv1
    NSSCipherSuite          +rsa_rc4_128_md5,+rsa_rc4_128_sha,+rsa_3des_sha,-rsa_des_sha,-rsa_rc4_40_md5,-rsa_rc2_40_md5,-rsa_null_md5,-rsa_null_sha,+fips_3des_sha,-fips_des_sha,-fortezza,-fortezza_rc4_128_sha,-fortezza_null,-rsa_des_56_sha,-rsa_rc4_56_sha,+rsa_aes_128_sha,+rsa_aes_256_sha

    RequestHeader set X-SSL-Subject %{SSL_CLIENT_S_DN}e
    RequestHeader set X-Client-DN "/CN=%{SSL_CLIENT_S_DN_CN}e"
    RequestHeader set X-Client-Verify %{SSL_CLIENT_VERIFY}e

    PassengerHighPerformance    on
    PassengerStatThrottleRate   120
    PassengerUseGlobalQueue     on

    RackAutoDetect  off
    RailsAutoDetect off
    RackBaseURI /

    DocumentRoot    /var/www/puppet/public
    <Directory /var/www/puppet>
        Options     None
        AllowOverride   None
        Order       allow,deny
        Allow       from all
    </Directory>
</VirtualHost>

  6. Open up ports for puppet and restart Apache:

    $ firewall-cmd --add-port=8140/tcp
$ service httpd restart

Puppet Agent setup#

On the Puppet Agent:

  1. Installation:

    # install latest puppet (agent)
# (yum install puppet-server is a couple minor versions behind)
# version 3.2 fixes a CA bug that isn't in the yum repo
$ rpm -ivh http://yum.puppetlabs.com/fedora/f19/products/i386/puppetlabs-release-19-2.noarch.rpm
$ yum install -y http://yum.puppetlabs.com/fedora/f19/products/x86_64/puppet-3.2.4-1.fc19.noarch.rpm

  2. Setup certificates for the agent

    $ ipa-getcert request -K puppet/puppet.example.com
                       -D puppet.example.com
                       -k /var/lib/puppet/ssl/private_keys/puppet.example.com.pem
                       -f /var/lib/puppet/ssl/certs/puppet.example.com.pem

  3. Setup the agent configuration in /etc/puppet/puppet.conf, by editing/adding the [agent] & [main] block:

    [main]
   # <--snip-->
   server = 'puppetmaster.example.com'
   certname = 'puppetmaster.example.com'
   # <--snip-->
[agent]
   # <--snip-->
   certificate_revocation = false
   certname = 'puppet.example.com'
   # <--snip-->

  4. Test the entire setup in puppet agent:

    # open up port for Puppet
$ firewall-cmd --add-port=8140/tcp
# test to see if the setup works
$ puppet agent --test
# you'll probably get a catalog error if you have no catalogs
# setup with your puppet master
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