CentOS 7
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OpenStack Ocata : Configure Nova#2
2017/02/27
 
Install OpenStack Compute Service (Nova).
This example is based on the emvironment like follows. 
                  eth0|10.0.0.30 
          +-----------+-----------+
          |    [ Control Node ]   |
          |                       |
          |  MariaDB    RabbitMQ  |
          |  Memcached  httpd     |
          |  Keystone   Glance    |
          |  Nova API             |
          +-----------------------+
[1] Install Nova services.
# install from Ocata, EPEL

[root@dlp ~(keystone)]#
yum --enablerepo=centos-openstack-ocata,epel -y install openstack-nova
[2] Configure Nova.
[root@dlp ~(keystone)]#
mv /etc/nova/nova.conf /etc/nova/nova.conf.org

[root@dlp ~(keystone)]#
vi /etc/nova/nova.conf
# create new

[DEFAULT]
# define own IP
my_ip = 10.0.0.30
state_path = /var/lib/nova
enabled_apis = osapi_compute,metadata
log_dir = /var/log/nova
# RabbitMQ connection info
transport_url = rabbit://openstack:password@10.0.0.30

[api]
auth_strategy = keystone

# Glance connection info
[glance]
api_servers = http://10.0.0.30:9292

[oslo_concurrency]
lock_path = $state_path/tmp

# MariaDB connection info
[api_database]
connection = mysql+pymysql://nova:password@10.0.0.30/nova_api

[database]
connection = mysql+pymysql://nova:password@10.0.0.30/nova

# Keystone auth info
[keystone_authtoken]
auth_uri = http://10.0.0.30:5000
auth_url = http://10.0.0.30:35357
memcached_servers = 10.0.0.30:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = servicepassword

[placement]
auth_url = http://10.0.0.30:35357
os_region_name = RegionOne
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = placement
password = servicepassword

[placement_database]
connection = mysql+pymysql://nova:password@10.0.0.30/nova_placement

[wsgi]
api_paste_config = /etc/nova/api-paste.ini
[root@dlp ~(keystone)]#
chmod 640 /etc/nova/nova.conf

[root@dlp ~(keystone)]#
chgrp nova /etc/nova/nova.conf

[root@dlp ~(keystone)]#
vi /etc/httpd/conf.d/00-nova-placement-api.conf
# add near line 15

  <Directory /usr/bin>
    Require all granted
  </Directory>
</VirtualHost>
[3] If SELinux is enabled, change policy like follows.
[root@dlp ~(keystone)]#
semanage port -a -t http_port_t -p tcp 8778

[root@dlp ~(keystone)]#
vi nova-api_pol.te
# create new

module nova-api_pol 1.0;

require {
        type nova_t;
        type httpd_config_t;
        type httpd_t;
        type nova_log_t;
        type sysctl_net_t;
        type netutils_exec_t;
        class file { read getattr create open execute };
        class dir { write search add_name };
        class capability { kill sys_ptrace };
        class capability2 block_suspend;
}

#============= httpd_t ==============
allow httpd_t nova_log_t:dir { write add_name };
allow httpd_t nova_log_t:file { create open };

#============= nova_t ==============
allow nova_t httpd_config_t:dir search;
allow nova_t netutils_exec_t:file execute;
allow nova_t self:capability kill;
allow nova_t sysctl_net_t:dir search;
allow nova_t sysctl_net_t:file { read getattr open };
allow nova_t self:capability sys_ptrace;
allow nova_t self:capability2 block_suspend;
[root@dlp ~(keystone)]#
checkmodule -m -M -o nova-api_pol.mod nova-api_pol.te

checkmodule: loading policy configuration from nova-api_pol.te
checkmodule: policy configuration loaded
checkmodule: writing binary representation (version 17) to nova-api_pol.mod
[root@dlp ~(keystone)]#
semodule_package --outfile nova-api_pol.pp --module nova-api_pol.mod

[root@dlp ~(keystone)]#
semodule -i nova-api_pol.pp

[4] If Firewalld is running, allow ports for services.
[root@dlp ~(keystone)]#
firewall-cmd --add-port={6080/tcp,8774/tcp,8775/tcp,8778/tcp} --permanent

success
[root@dlp ~(keystone)]#
firewall-cmd --reload

success
[5] Add Data into Database and start Nova services.
It doesn't need to care the messages "deprecated ***" when sync DB.
[root@dlp ~(keystone)]#
su -s /bin/bash nova -c "nova-manage api_db sync"
[root@dlp ~(keystone)]#
su -s /bin/bash nova -c "nova-manage cell_v2 map_cell0 \
--database_connection mysql+pymysql://nova:password@10.0.0.30/nova_cell0"
[root@dlp ~(keystone)]#
su -s /bin/bash nova -c "nova-manage db sync"
[root@dlp ~(keystone)]#
su -s /bin/bash nova -c "nova-manage cell_v2 create_cell --name cell1 \
--database_connection mysql+pymysql://nova:password@10.0.0.30/nova \
--transport-url rabbit://openstack:password@10.0.0.30:5672"
[root@dlp ~(keystone)]#
systemctl restart httpd

[root@dlp ~(keystone)]#
chown nova. /var/log/nova/nova-placement-api.log
[root@dlp ~(keystone)]#
for service in api cert consoleauth conductor scheduler novncproxy; do
systemctl start openstack-nova-$service
systemctl enable openstack-nova-$service
done
# show status

[root@dlp ~(keystone)]#
openstack compute service list 

+----+------------------+---------------+----------+---------+-------+----------------------------+
| ID | Binary           | Host          | Zone     | Status  | State | Updated At                 |
+----+------------------+---------------+----------+---------+-------+----------------------------+
|  5 | nova-cert        | dlp.srv.world | internal | enabled | up    | 2017-02-28T03:50:39.000000 |
|  6 | nova-consoleauth | dlp.srv.world | internal | enabled | up    | 2017-02-28T03:50:32.000000 |
|  7 | nova-conductor   | dlp.srv.world | internal | enabled | up    | 2017-02-28T03:50:34.000000 |
|  8 | nova-scheduler   | dlp.srv.world | internal | enabled | up    | 2017-02-28T03:50:37.000000 |
+----+------------------+---------------+----------+---------+-------+----------------------------+
 
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