Packstack installation mariadb error

Here is the error I get 

ip_mariadb.pp:                          [ ERROR ]

Applying Puppet manifests                         [ ERROR ]

ERROR : Error appeared during Puppet run: ip_mariadb.pp

Error: Execution of '/usr/bin/yum -d 0 -e 0 -y install mariadb' returned 1: Transact

ion check error:

You will find full trace in log /var/tmp/packstack/ZCy5o5/manifests/

ip_mariadb.pp.log

Please check log file /var/tmp/packstack/ZCy5o5/openstack-setup.log

for more information

Additional information:

Remove mysql and install mariadb manually

# yum remove mysql mysql-libs mysql-devel mysql-server

# yum install mariadb mariadb-libs mariadb-devel mariadb-server

After that run packstack again

# packstack --answer-file rdo.txt

Packstack Openstack Installation

After installing CentOS 7
Instal RDO
#yum install -y https://rdoproject.org/repos/rdo-release.rpm

Because installation not compatible with openstack-packstack
#systemctl stop NetworkManager; systemctl disable NetworkManager

Install openstack
#yum install -y centos-release-openstack-mitaka

Install packstack
#yum install -y openstack-packstack

get the answer file
# packstack --gen-answer-file /root/answers.txt


change with your options
CONFIG_NTP_SERVERS=pool.ntp.org
CONFIG_KEYSTONE_ADMIN_PW=password
CONFIG_DEFAULT_PASSWORD=password
CONFIG_HORIZON_SSL=y
CONFIG_PROVISION_DEMO=n


start installation
#packstack --answer-file /root/answers.txt



You may face this error

Preparing Nova VNC Proxy entries [ ERROR ]

ERROR : [Errno 2] No such file or directory: '/etc/pki/tls/certs/selfcert.crt'
Please check log file /var/tmp/packstack/20161109-192844-cGjfCc/openstack-setup.log for more information


Solution:
# openssl req -x509 -sha256 -newkey rsa:2048 -keyout selfkey.key -out selfcert.crt -days 1024 -nodes
# cp selfkey.key /etc/pki/tls/private/
# cp selfcert.crt /etc/pki/tls/certs

change answer file
CONFIG_SSL_CERT_DIR=/root/packstackca/

and put your ip here
ln -s /etc/pki/tls/certs/ssl_vnc.crt/root/packstackca/certs/PUTYOURIPssl_vnc.crt