OpenStack<\/strong>\u00a0platform consists of several inter-related projects that control hardware, storage, networking resources of a datacenter, such as: Compute, Image Service, Block Storage, Identity Service, Networking, Object Storage, Telemetry, Orchestration and Database.<\/p>\n The administration of those components can be managed through the web-based interface or with the help of OpenStack command line.<\/p>\n Install OpenStack in CentOS 7 and RHEL 7<\/p>\n<\/div>\n This tutorial will guide you on how you can deploy your own private cloud infrastructure with\u00a0OpenStack<\/strong>installed on a single node in\u00a0CentOS 7<\/strong>\u00a0or\u00a0RHEL 7<\/strong>\u00a0or\u00a0Fedora<\/strong>\u00a0distributions by using\u00a0rdo<\/strong>\u00a0repositories, although the deployment can be achieved on multiple nodes.<\/p>\n 1.<\/strong>\u00a0Before you begin preparing the node in order to deploy your own virtual cloud infrastructure, first login with root account and assure that the system is up to date.<\/p>\n 2.<\/strong>\u00a0Next, issue the\u00a0 List All Running Linux Services<\/p>\n<\/div>\n 3.<\/strong>\u00a0Next, identify,\u00a0stop, disable and remove unneeded services<\/a>, mainly postfix, NetworkManager and firewalld. At the end the only daemon that would be running on your machine should be\u00a0sshd<\/strong>.<\/p>\n 4.<\/strong>\u00a0Completely disable Selinux policy on the machine by issuing the below commands. Also edit\u00a0 Disable SELinux<\/p>\n<\/div>\n 5.<\/strong>\u00a0On the next step using the\u00a0hostnamectl<\/strong>\u00a0command to\u00a0set your Linux system hostname<\/a>. Replace the\u00a0FQDN<\/strong>variable accordingly.<\/p>\n Set Linux System Hostname<\/p>\n<\/div>\n 6.<\/strong>\u00a0Finally, install\u00a0 7.<\/strong>\u00a0OpenStack<\/strong>\u00a0will be deployed on your Node with the help of\u00a0PackStack<\/strong>\u00a0package provided by\u00a0rdo<\/strong>\u00a0repository (RPM Distribution of OpenStack<\/strong>).<\/p>\n In order to enable\u00a0rdo<\/strong>\u00a0repositories on\u00a0RHEL 7<\/strong>\u00a0run the below command.<\/p>\n On\u00a0CentOS 7<\/strong>, the\u00a0Extras<\/strong>\u00a0repository includes the RPM that actives the OpenStack repository.\u00a0Extras<\/strong>\u00a0is already enabled, so you can easily install the RPM to setup the OpenStack repository:<\/p>\n 8.<\/strong>\u00a0Now it\u2019s time to install\u00a0PackStack<\/strong>\u00a0package.\u00a0Packstack<\/strong>\u00a0represents a utility which facilitates the deployment on multiple nodes for different components of\u00a0OpenStack<\/strong>\u00a0via\u00a0SSH<\/strong>\u00a0connections and\u00a0Puppet<\/strong>\u00a0modules.<\/p>\n Install Packstat package in Linux with the following command:<\/p>\n 9.<\/strong>\u00a0On the next step generate an answer file for\u00a0Packstack<\/strong>\u00a0with the default configurations which will be later edited with the required parameters in order to deploy a standalone installation of Openstack (single node).<\/p>\n The file will be named after the current day timestamp when generated (day, month and year).<\/p>\n Generate Packstack Answer Configuration File<\/p>\n<\/div>\n 10.<\/strong>\u00a0Now edit the generated answer configuration file with a text editor.<\/p>\n and replace the following parameters to match the below values. In order to be safe replace the passwords fields accordingly.<\/p>\n Please consult\u00a0http:\/\/www.pool.ntp.org\/en\/<\/a>\u00a0server list in order to use a public NTP server near your physical location.<\/p>\n Add NTP Server in Packstack<\/p>\n<\/div>\n Add Provision in Packstack<\/p>\n<\/div>\n Add Admin Account in Packstack<\/p>\n<\/div>\n Access OpenStack dashboard via HTTP with SSL enabled.<\/p>\n Enable HTTPS for OpenStack<\/p>\n<\/div>\n The root password for MySQL server.<\/p>\n Set MySQL Root Password in OpenStack<\/p>\n<\/div>\n Setup a password for\u00a0nagiosadmin<\/strong>\u00a0user in order to access Nagios web panel.<\/p>\n Set Nagios Admin Password<\/p>\n<\/div>\n 11.<\/strong>\u00a0After you finished editing save and close the file. Also, open SSH server configuration file and uncomment\u00a0PermitRootLogin<\/strong>\u00a0line by removing the front hashtag as illustrated on the below screenshot.<\/p>\n Enable SSH Root Login<\/p>\n<\/div>\n Then restart SSH service to reflect changes.<\/p>\n 12.<\/strong>\u00a0Finally start\u00a0Openstack<\/strong>\u00a0installation process via the answer file edited above by running the below command syntax:<\/p>\n Openstack Installation in Linux<\/p>\n<\/div>\n 13.<\/strong>\u00a0Once the installation of OpenStack components is successfully completed, the installer will display a few lines with the local dashboard links for\u00a0OpenStack<\/strong>\u00a0and\u00a0Nagios<\/strong>\u00a0and the required credentials already configured above in order to login on both panels.<\/p>\n OpenStack Installation Completed<\/p>\n<\/div>\n The credentials are also stored under your home directory in\u00a0 14.<\/strong>\u00a0If for some reasons the installation process ends with an error regarding httpd service, open\u00a0\/etc\/httpd\/conf.d\/ssl.conf<\/strong>\u00a0file and make sure you comment the following line as illustrated below.<\/p>\n Disable HTTPS SSL Port<\/p>\n<\/div>\n Then restart Apache daemon to apply changes.<\/p>\n Note<\/strong>: In case you still can\u2019t browse Openstack web panel on port\u00a0443<\/strong>\u00a0restart the installation process from beginning with the same command issued for the initial deployment.<\/p>\n 15.<\/strong>\u00a0In order to access\u00a0OpenStack<\/strong>\u00a0web panel from a remote host in your LAN navigate to your machine IP Address or FQDN\/dashboard via HTTPS protocol.<\/p>\n Due to the fact that you\u2019re using a\u00a0Self-Signed Certificate<\/strong>\u00a0issued by an untrusted\u00a0Certificate Authority<\/strong>\u00a0an error should be displayed on your browser.<\/p>\n Accept the error and login to the dashboard with the user\u00a0admin<\/strong>\u00a0and the\u00a0password<\/strong>\u00a0set on\u00a0CONFIG_KEYSTONE_ADMIN_PW<\/strong>\u00a0parameter from answer file set above.<\/p>\n OpenStack Login Dashboard<\/p>\n<\/div>\n Openstack Projects<\/p>\n<\/div>\n 16.<\/strong>\u00a0Alternatively, if you opted to install\u00a0Nagios<\/strong>\u00a0component for\u00a0OpenStack<\/strong>, you can browse\u00a0Nagios<\/strong>\u00a0web panel at the following URI and login with the credentials setup in answer file.<\/p>\n Nagios Login Dashboard<\/p>\n<\/div>\n Nagios Linux Monitoring Interface<\/p>\n<\/div>\n That\u2019s all! Now you can start setup your own internal cloud environment. Now follow the next tutorial that will explain how to link the\u00a0server physical NIC to openstack bridge interface<\/a>\u00a0and manage Openstack from web panel.<\/p>\n This tutorial will guide you on how you can configure OpenStack networking service in order to allow access from external networks to OpenStack instances.<\/p>\n 1.<\/strong>\u00a0Before starting to create\u00a0OpenStack<\/strong>\u00a0networks from dashboard, first we need to create an\u00a0OVS<\/strong>\u00a0bridge and modify our physical network interface to bind as a port to OVS bridge.<\/p>\n Thus, login to your server terminal, navigate to network interfaces directory scripts and use the physical interface as an excerpt to setup OVS bridge interface by issuing the following commands:<\/p>\n Setup OVS Bridge Interface in OpenStack<\/p>\n<\/div>\n 2.<\/strong>\u00a0Next, edit and modify the bridge interface\u00a0(br-ex)<\/strong>\u00a0using a text editor as illustrated below:<\/p>\n Interface\u00a0br-ex<\/strong>\u00a0excerpt:<\/p>\n Configure Bridge Network Interface for OpenStack<\/p>\n<\/div>\n 3.<\/strong>\u00a0Do the same with the physical interface (eno16777736<\/strong>), but make sure it looks like this:<\/p>\n Interface\u00a0eno16777736<\/strong>\u00a0excerpt:<\/p>\n Configure Physical Network Interface for OpenStack<\/p>\n<\/div>\n Important<\/strong>: While editing interfaces cards make sure you replace the physical interface name, IPs and DNS servers accordingly.<\/p>\n 4.<\/strong>\u00a0Finally, after you\u2019ve modified edited both network interfaces, restart network daemon to reflect changes and verify the new configurations using\u00a0ip command<\/a>.<\/p>\n![\"Install](\"https:\/\/www.tecmint.com\/wp-content\/uploads\/2016\/04\/Install-OpenStack-in-CentOS-7.png\")
<\/a><\/p>\nRequirements<\/h4>\n
\n
Step 1: Initial System Configurations<\/h3>\n
ss -tulpn<\/code>\u00a0command to list all running services.<\/p>\n# ss -tulpn\r\n<\/pre>\n
<\/a><\/p>\n# systemctl stop postfix firewalld NetworkManager\r\n# systemctl disable postfix firewalld NetworkManager\r\n# systemctl mask NetworkManager\r\n# yum remove postfix NetworkManager NetworkManager-libnm\r\n<\/pre>\n
\/etc\/selinux\/config<\/code>\u00a0file and set SELINUX line from\u00a0enforcing<\/strong>\u00a0to\u00a0disabled<\/strong>\u00a0as illustrated on the below screenshot.<\/p>\n# setenforce 0\r\n# getenforce\r\n# vi \/etc\/selinux\/config\r\n<\/pre>\n
<\/a><\/p>\n# hostnamectl set-hostname cloud.centos.lan\r\n<\/pre>\n
<\/a><\/p>\nntpdate<\/code>\u00a0command in order to\u00a0synchronize time with a NTP server<\/a>\u00a0on your premises near your physical proximity.<\/p>\n# yum install ntpdate \r\n<\/pre>\n
Step 2: Install OpenStack in CentOS and RHEL<\/h3>\n
# yum install https:\/\/www.rdoproject.org\/repos\/rdo-release.rpm \r\n<\/pre>\n
# yum install -y centos-release-openstack-mitaka\r\n# yum update -y\r\n<\/pre>\n
# yum install openstack-packstack\r\n<\/pre>\n
# packstack --gen-answer-file='date +\"%d.%m.%y\"'.conf\r\n# ls\r\n<\/pre>\n
<\/a><\/p>\n# vi 13.04.16.conf\r\n<\/pre>\n
CONFIG_NTP_SERVERS=0.ro.pool.ntp.org\r\n<\/pre>\n
<\/a><\/p>\nCONFIG_PROVISION_DEMO=n\r\n<\/pre>\n
<\/a><\/p>\nCONFIG_KEYSTONE_ADMIN_PW=your_password for Admin user\r\n<\/pre>\n
<\/a><\/p>\nCONFIG_HORIZON_SSL=y\r\n<\/pre>\n
<\/a><\/p>\nCONFIG_MARIADB_PW=mypassword1234\r\n<\/pre>\n
<\/a><\/p>\nCONFIG_NAGIOS_PW=nagios1234\r\n<\/pre>\n
<\/a><\/p>\n# vi \/etc\/ssh\/sshd_config\r\n<\/pre>\n
<\/a><\/p>\n# systemctl restart sshd\r\n<\/pre>\n
Step 3: Start Openstack Installation Using Packstack Answer File<\/h3>\n
# packstack --answer-file 13.04.16.conf\r\n<\/pre>\n
<\/a><\/p>\n<\/a><\/p>\nkeystonerc_admin<\/code>\u00a0file.<\/p>\n#Listen 443 https\r\n<\/pre>\n
<\/a><\/p>\n# systemctl restart httpd.service\r\n<\/pre>\n
# packstack --answer-file \/root\/13.04.16.conf\r\n<\/pre>\n
Step 4: Remotely Access OpenStack Dashboard<\/h3>\n
https:\/\/192.168.1.40\/dashboard \r\n<\/pre>\n
<\/a><\/p>\n<\/a><\/p>\nhttps:\/\/192.168.1.40\/nagios \r\n<\/pre>\n
<\/a><\/p>\n<\/a><\/p>\nHow to Configure OpenStack Network to Enable Access to OpenStack Instances<\/h1>\n
Requirements<\/h4>\n
\n
Step 1: Modify Network Interface Configuration Files<\/h3>\n
# cd \/etc\/sysconfig\/network-scripts\/\r\n# ls \r\n# cp ifcfg-eno16777736 ifcfg-br-ex\r\n<\/pre>\n
<\/a><\/p>\n# vi ifcfg-br-ex<\/pre>\n
TYPE=\"Ethernet\"\r\nBOOTPROTO=\"none\"\r\nDEFROUTE=\"yes\"\r\nIPV4_FAILURE_FATAL=\"no\"\r\nIPV6INIT=\"no\"\r\nIPV6_AUTOCONF=\"no\"\r\nIPV6_DEFROUTE=\"no\"\r\nIPV6_FAILURE_FATAL=\"no\"\r\nNAME=\"br-ex\"\r\nUUID=\"1d239840-7e15-43d5-a7d8-d1af2740f6ef\"\r\nDEVICE=\"br-ex\"\r\nONBOOT=\"yes\"\r\nIPADDR=\"192.168.1.41\"\r\nPREFIX=\"24\"\r\nGATEWAY=\"192.168.1.1\"\r\nDNS1=\"127.0.0.1\"\r\nDNS2=\"192.168.1.1\"\r\nDNS3=\"8.8.8.8\"\r\nIPV6_PEERDNS=\"no\"\r\nIPV6_PEERROUTES=\"no\"\r\nIPV6_PRIVACY=\"no\"\r\n<\/pre>\n
<\/a><\/p>\n# vi ifcfg-eno16777736\r\n<\/pre>\n
TYPE=\"Ethernet\"\r\nBOOTPROTO=\"none\"\r\nDEFROUTE=\"yes\"\r\nIPV4_FAILURE_FATAL=\"no\"\r\nIPV6INIT=\"no\"\r\nIPV6_AUTOCONF=\"no\"\r\nIPV6_DEFROUTE=\"no\"\r\nIPV6_FAILURE_FATAL=\"no\"\r\nNAME=\"eno16777736\"\r\nDEVICE=\"eno16777736\"\r\nONBOOT=\"yes\"\r\nTYPE=\u201dOVSPort\u201d\r\nDEVICETYPE=\u201dovs\u201d\r\nOVS_BRIDGE=\u201dbr-ex\u201d\r\n<\/pre>\n
<\/a><\/p>\n# systemctl restart network.service\r\n# ip a\r\n<\/pre>\n