OpenStack Ocata : Pre-Requirements

This is the exmaple of Cloud Computiong by OpenStack Ocata. Install some services that some components of OpenStack needs for system requirements on here.  This example is based on the emvironment like follows. eth0|10.0.0.30 +-----------+-----------+ | [ Control Node ] | | | | MariaDB RabbitMQ | | Memcached | +-----------------------+ [1] Install NTP Server to adjusts the date, refer to here. NTPd : Configure NTP Server 2014/07/08   Install NTPd and Configure NTP server for time adjustment. [1] Install NTPd. [root@dlp ~]#  yum -y install ntp [root@dlp ~]#  vi /etc/ntp.conf # line 18: add the network range you allow to receive requests restrict 10.0.0.0 mask 255.255.255.0 nomodify notrap # change servers for synchronization # server 0.centos.pool.ntp.org iburst # server 1.centos.pool.ntp.org iburst # server 2.centos.pool.ntp.org iburst # server 3.centos.pool.ntp.org iburst server ntp1.jst.mfeed.ad.jp iburst server ntp2.jst.mfeed.ad.jp iburst server ntp3.jst.mfeed.ad.jp iburst [root@dlp ~]#  systemctl start ntpd  [root@dlp ~]#  systemctl enable ntpd  [2] If Firewalld is running, allow NTP service. NTP uses 123/UDP. [root@dlp ~]#  firewall-cmd --add-service=ntp --permanent  success [root@dlp ~]#  firewall-cmd --reload  success [3] Verify it works normally like follows. [root@dlp ~]#  ntpq -p remote refid st t when poll reach delay offset jitter ============================================================================== +ntp1.jst.mfeed. 172.29.1.100 2 u 29 64 1 18.826 -0.126 0.000 +ntp2.jst.mfeed. 172.29.2.50 2 u 28 64 1 21.592 0.018 0.000 *ntp3.jst.mfeed. 133.243.236.18 2 u 28 64 1 22.666 -1.033 0.000

[2]	Add the repository of Openstack Ocata.

[root@dlp ~]#  yum -y install centos-release-openstack-ocata  [root@dlp ~]#  sed -i -e "s/enabled=1/enabled=0/g" /etc/yum.repos.d/CentOS-OpenStack-ocata.repo

[3]

Install MariaDB server. It's possible to use MariaDB 5.5 on CentOS Base repository though, but on this exmaple, Install MariaDB 10.1 provided from CentOS Release Openstack Newton above. After installation, Configure basic settings, refer to here.   Install MariaDB 5.5 which is CentOS 7 default version to configure Database server. [1] Install MariaDB 5.5. [root@www ~]#  yum -y install mariadb-server [root@www ~]#  vi /etc/my.cnf # add follows within [mysqld] section [mysqld] character-set-server=utf8 [root@www ~]#  systemctl start mariadb  [root@www ~]#  systemctl enable mariadb  ln -s '/usr/lib/systemd/system/mariadb.service' '/etc/systemd/system/multi-user.target.wants/mariadb.service' [2] Initial Settings for MariaDB. [root@www ~]#  mysql_secure_installation  NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY! In order to log into MariaDB to secure it, we'll need the current password for the root user. If you've just installed MariaDB, and you haven't set the root password yet, the password will be blank, so you should just press enter here. Enter current password for root (enter for none): OK, successfully used password, moving on... Setting the root password ensures that nobody can log into the MariaDB root user without the proper authorisation. # set root password Set root password? [Y/n]  y New password: Re-enter new password: Password updated successfully! Reloading privilege tables.. ... Success! By default, a MariaDB installation has an anonymous user, allowing anyone to log into MariaDB without having to have a user account created for them. This is intended only for testing, and to make the installation go a bit smoother. You should remove them before moving into a production environment. # remove anonymous users Remove anonymous users? [Y/n]  y ... Success! Normally, root should only be allowed to connect from 'localhost'. This ensures that someone cannot guess at the root password from the network. # disallow root login remotely Disallow root login remotely? [Y/n]  y ... Success! By default, MariaDB comes with a database named 'test' that anyone can access. This is also intended only for testing, and should be removed before moving into a production environment. # remove test database Remove test database and access to it? [Y/n]  y - Dropping test database... ... Success! - Removing privileges on test database... ... Success! Reloading the privilege tables will ensure that all changes made so far will take effect immediately. # reload privilege tables Reload privilege tables now? [Y/n]  y ... Success! Cleaning up... All done! If you've completed all of the above steps, your MariaDB installation should now be secure. Thanks for using MariaDB! # connect to MariaDB with root [root@www ~]#  mysql -u root -p  Enter password:      # MariaDB root password you set Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 3 Server version: 5.5.37-MariaDB MariaDB Server Copyright (c) 2000, 2014, Oracle, Monty Program Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. # show user list MariaDB [(none)]>  select user,host,password from mysql.user;  +------+-----------+-------------------------------------------+ | user | host | password | +------+-----------+-------------------------------------------+ | root | localhost | *xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx | | root | 127.0.0.1 | *xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx | | root | ::1 | *xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx | +------+-----------+-------------------------------------------+ 3 rows in set (0.00 sec) # show database list MariaDB [(none)]>  show databases;  +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | +--------------------+ 3 rows in set (0.00 sec) MariaDB [(none)]>  exit Bye

# install from Openstack Ocata [root@dlp ~]#  yum --enablerepo=centos-openstack-ocata -y install mariadb-server

[4]	Install RabbitMQ, Memcached.

# install from EPEL [root@dlp ~]#  yum --enablerepo=epel -y install rabbitmq-server memcached [root@dlp ~]#  systemctl start rabbitmq-server memcached  [root@dlp ~]#  systemctl enable rabbitmq-server memcached  # add openstack user (set any password you like for "password") [root@dlp ~]#  rabbitmqctl add_user openstack password  Creating user "openstack" ... ...done. [root@dlp ~]#  rabbitmqctl set_permissions openstack ".*" ".*" ".*"  Setting permissions for user "openstack" in vhost "/" ... ...done.

[5]	If Firewalld is running, allow ports for services.

[root@dlp ~]#  firewall-cmd --add-port={11211/tcp,5672/tcp} --permanent  success [root@dlp ~]#  firewall-cmd --reload  success