Oracle linux and virtualization

Содержание

OracleВ® Linux Virtualization Manager
Getting Started Guide
Oracle Legal Notices
Oracle Documentation License
ChapterВ 2В Installation and Configuration
2.1В Installing the Engine
2.1.1В Configuring the Engine
2.1.2В Engine Configuration Options
Image I/O Proxy
WebSocket Proxy
Data Warehouse
VM Console Proxy
OVN Provider
Manager DNS Name
Automatic Firewall Configuration
Data Warehouse Database
Engine Database
Admin User Password
Application Mode
OVN Provider Credentials
SAN Wipe After Delete
Web Server Configuration
Data Warehouse Sampling Scale
2.1.3В Logging in to the Administration Portal
Preparing to Log in
Logging in
Next Steps
Logging Out
2.2В Configuring a KVM Host
2.2.1В Preparing a KVM Host

OracleВ® Linux Virtualization Manager

Getting Started Guide

Oracle Legal Notices

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Oracle Documentation License

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Web-based Help from DocBook XML

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the вЂњSoftwareвЂќ), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

Warranty: THE SOFTWARE IS PROVIDED «AS IS», WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL DAVID CRAMER, KASUN GAJASINGHE, OR ANY OTHER CONTRIBUTOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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ChapterВ 2В Installation and Configuration

To deploy Oracle Linux Virtualization Manager, you install and configure the engine on a host with Oracle Linux 7.6 (or later), configure KVM hosts, storage, and networks, and create virtual machines.

This section walks you through installing and configuring the engine host and the KVM host(s) that you use for virtual machines. Ensure you thoroughly review the ChapterВ 1, Requirements and Scalability Limits because the requirements for the engine host are different than the KVM hosts.

To review conceptual information and help to plan your installation, see the Oracle Linux Virtualization Manager: Architecture and Planning Guide.

2.1В Installing the Engine

To install Oracle Linux Virtualization Manager, you perform a fresh installation of Oracle Linux 7.6 (or later) on the host, install the ovirt-engine package, and then run the engine-setup command to configure the Manager.

You can install the Manager in a virtual machine as long as it is not managing that virtual machine, or in a self-hosted engine configuration. For more information, see ChapterВ 5, Self-Hosted Engine Deployment.

You can download the installation ISO for the latest Oracle Linux 7 from the Oracle Software Delivery Cloud at https://edelivery.oracle.com.

Install Oracle Linux 7 on the host using the Minimal Install base environment.

Do not install any additional packages until after you have installed the Manager packages, because they may cause dependency issues.

(Optional) If you use a proxy server for Internet access, configure Yum with the proxy server settings. For more information, see Yum Configuration in the Oracle В® Linux 7: Managing Software.

Subscribe the system to the required ULN channels OR install the Release 4.3.10 package using yum and enable the required repositories.

For ULN registered hosts only : If the host is registered on ULN, subscribe the system to the required channels.

On the Systems tab, click the link named for the host in the list of registered machines.

On the System Details page, click Manage Subscriptions .

On the System Summary page, select each required channel from the list of available channels and click the right arrow to move the channel to the list of subscribed channels. Subscribe the system to the following channels:

(For VDSM) ol7_x86_64_UEKR6

Click Save Subscriptions .

For Oracle Linux yum server hosts only : Install the Oracle Linux Virtualization Manager Release 4.3.10 package and enable the required repositories.

(Optional) Make sure the host is using the modular yum repository configuration. For more information, see Getting Started with Oracle Linux Yum Server.

Enable the ol7_latest yum repository.

Before you execute yum-config-manager ensure the yum-utils package is installed on your system. For more information, see Using Yum Utilities to Manage Configuration in the Oracle В® Linux 7: Administrator’s Guide

Install the Oracle Linux Virtualization Manager Release 4.3.10 package.

Use the yum command to verify that the required repositories are enabled.

Clear the yum cache.

List the configured repositories and verify that the required repositories are enabled.

The following repositories must be enabled:

If a required repository is not enabled, use the yum-config-manager to enable it.

Unsubscribe to the 4.2 ULN channels OR disable the 4.2 repositories using yum.

For ULN registered hosts only : If the host is registered on ULN, unsubscribe to the following channels.

For Oracle Linux yum server hosts only : Run the following commands.

Install the Manager using the ovirt-engine command.

2.1.1В Configuring the Engine

After you install the Oracle Linux Virtualization Manager, you run the engine-setup command (the Setup program) to configure the Manager. You are prompted to answer a series of questions whose values are used to configure the Manager. Some of these questions relate to features that are in technology preview; Oracle recommends that you accept the default values for these features. For more information, see Technology Preview in the Oracle Linux Virtualization Manager: Release Notes.

The Manager uses two PostgreSQL databases: one for the engine and one for the data warehouse. By default, Setup creates and configures the engine database locally on the engine host. Alternatively, you can configure the engine host to use a manually-configured local or remote database. If you choose to use a manually-configured local or remote database, you must set it up before running engine-setup . Currently, running the engine or data warehouse database on a remote host is a technology preview feature.

To configure the Manager:

Run the engine-setup command on the host where you installed the Manager.

Run engine-setup —accept-defaults to automatically accept all questions that have default answers.

The Setup program prompts you to configure the Manager.

Enter Yes to configure the Manager

If you enter No , the configuration stops. To restart, rerun the engine-setup command.

For the remaining configuration questions, provide input or accept default values, which are in square brackets after each question. To accept the default value for a given question, press Enter .

Setup asks you for the fully qualified DNS name (FQDN) of the Manager host. Although Setup tries to automatically detect the name, you must ensure the FQDN is correct.

For detailed information on the configuration options, see SectionВ 2.1.2, вЂњEngine Configuration OptionsвЂќ.

Once you have answered all the questions, Setup displays a list of the values you entered. Review the list carefully and then press Enter to configure the Manager.

Your answers are saved to a file that can be used to reconfigure the Manager using the same values. Setup also displays the location of the log file for the configuration process.

When the configuration is complete, details about how to log in to the Administration Portal are displayed. To verify that the configuration was successful, log into the Administration Portal, as described in SectionВ 2.1.3, вЂњLogging in to the Administration PortalвЂќ.

2.1.2В Engine Configuration Options

The following information describes the options for configuring Oracle Linux Virtualization Manager when you run the engine-setup command.

Some of the configuration option are in technology preview; Oracle recommends that you accept the default values for these features. For more information, see Technology Preview in the Oracle Linux Virtualization Manager: Release Notes.

Image I/O Proxy

The Image I/O Proxy ( ovirt-imageio-proxy ) enables you to upload virtual disks into storage domains.

WebSocket Proxy

The WebSocket Proxy enables you to connect to virtual machines using the noVNC or HTML 5 consoles.

For security and performance reasons, you can configure the WebSocket Proxy on a remote host.

Data Warehouse

The Data Warehouse feature can run on the Manager host or on a remote host. Running Data Warehouse on a remote host reduces the load on the Manager host.

Running the Data Warehouse on a remote host is a technology preview feature.

VM Console Proxy

The VM Console Proxy enables you to access virtual machine serial consoles from a command line. To use this feature, serial consoles must be enabled in the virtual machines.

OVN Provider

Install the Open Virtual Network (OVN) provider on the Manager host and add it as an external network provider. The default cluster is automatically configured to use OVN as its network provider.

OVN is an OVS (Open vSwitch) extension which enables you to configure virtual networks.

Using external providers, including the OVN provider, is a technology preview feature.

Manager DNS Name

The fully qualified DNS name of the Manager host. Check that the automatically detected DNS name is correct.

Automatic Firewall Configuration

Configure the firewall on the host to open the ports used for external communication between Oracle Linux Virtualization Manager and the components it manages.

If Setup configures the firewall, and no firewall managers are active, you are prompted to select a firewall manager from a list.

If you enter No , you must manually configure the firewall. When the Manager configuration is complete, Setup displays a list of ports that need to be opened, see for details.

Data Warehouse Database

The Data Warehouse database (the history database) can run on the Manager host or on a remote host. Running the database on a remote host reduces the load on the Manager host.

Running the database on a remote host is a technology preview feature.

In this step you configure the name of the database, and the user name and password for connecting to it. Make a note of these details.

Enter Local to connect to a local PostgreSQL server, or Remote to connect to an existing PostgreSQL server running on a remote host.

If you enter Local , you can choose whether to set up a local PostgreSQL server automatically, or to connect to an existing local PostgreSQL server.

Enter Automatic to have Setup configure a local database server, or Manual to connect to an existing local database server. If you enter Manual , you are prompted for the details for connecting to the database:

If you enter Remote to connect to an existing PostgreSQL server running on a remote host, you are prompted for the details for connecting to the database:

Engine Database

The Oracle Linux Virtualization Manager database (the engine database) can run on the Manager host or on a remote host. Running the database on a remote host reduces the load on the Manager host.

Running the database on a remote host is a technology preview feature.

In this step you configure the name of the database, and the user name and password for connecting to it. Make a note of these details.

Enter Local to connect to a local PostgreSQL server, or Remote to connect to an existing PostgreSQL server running on a remote host.

If you enter Local , you can choose whether to set up a local PostgreSQL server automatically, or to connect to an existing local PostgreSQL server.

If you enter Remote to connect to an existing PostgreSQL server running on a remote host, you are prompted for the details for connecting to the database:

Admin User Password

Enter a password for the default administrative user (admin@internal). Make a note of the password.

Application Mode

The Manager can be configured to manage virtual machines ( Virt ) or manage Gluster clusters ( Gluster ) , or Both .

OVN Provider Credentials

If you installed the OVN provider, configure the credentials for connecting to the OVN (Open vSwitch) databases.

Using external providers, including the OVN provider, is a technology preview feature.

SAN Wipe After Delete

Enter Yes to set the default value for the wipe_after_delete flag to true , which wipes the blocks of a virtual disk when it is deleted.

Using the wipe after delete functionality is a technology preview feature.

Web Server Configuration

Provide the organization name to use for the automatically generated self-signed SSL certificate used by the Manager web server.

Enter Yes to make the Oracle Linux Virtualization Manager landing page the default page presented by the web server.

Enter Automatic to generate a self-signed SSL certificate for the web server. Only use self-signed certificates for testing purposes.

Enter Manual to provide the location of the SSL certificate and private key to use the web server.

Data Warehouse Sampling Scale

Set the Data Warehouse sampling scale, either Basic or Full. This step is skipped the Data Warehouse is not configured to run on the Manager host.

Enter 1 for Basic, which reduces the values of DWH_TABLES_KEEP_HOURLY to 720 and DWH_TABLES_KEEP_DAILY to 0 . Enter 2 for Full.

If the Manager and the Data Warehouse run on the same host, Basic is the recommended sample scale because this reduces the load on the Manager host. Full is recommended only if the Data Warehouse runs on a remote host.

The Full sampling scale is a technology preview feature.

2.1.3В Logging in to the Administration Portal

After you run the engine-setup command to configure Oracle Linux Virtualization Manager, you should log into the Administration Portal to verify that the configuration was successful.

Preparing to Log in

It is recommended that you use the latest version one of the following browsers to access the Administration Portal

Microsoft Internet Explorer 11

If Oracle Linux Virtualization Manager was configured to use a self-signed SSL certificate, or an SSL certificate that is signed by a Certificate Authority (CA) that is not trusted by the browser (for example an Intermediate CA), you should install the CA certificate in the browser. Consult your browser’s instructions for how to import a CA certificate. You can download the CA certificate from the Manager at:

http:// manager-fqdn /ovirt-engine/services/pki-resource?resource=ca-certificate&format=X509-PEM-CA

Usually you access the Administration Portal using the fully qualified domain name of the Manager host that you provided during installation. However, you can access the Administration Portal using an alternate host name(s). To do this, you need to add a configuration file to the Manager as follows:

Create the file /etc/ovirt-engine/engine.conf.d/99-custom-sso-setup.conf with the following content:

The list of alternate host names must be separated by spaces.

Restart Oracle Linux Virtualization Manager.

Logging in

You log in to the Administration Portal using a web browser and the default admin@internal user.

Go to https:// manager-fqdn /ovirt-engine . The Welcome page displays.

(Optional) Change the preferred language from the drop-down list on the Welcome page.

You can view the Administration Portal in multiple languages. The default language is based on the locale of your web browser.

Click Administration Portal . The Login page displays.

Enter admin for the Username and the password you specified when you configured the Manager.

From the Profile list, select internal and click Log In .

Next Steps

Now that you have configured and logged into the Manager, the next step is to add Oracle Linux KVM hosts, as described in SectionВ 2.2, вЂњConfiguring a KVM HostвЂќ.

Logging Out

To log out of the Administration Portal , click the person icon in the header bar and click Sign Out . You are returned to the Login page.

2.2В Configuring a KVM Host

This section shows you how to configure and add a KVM host installed with Oracle Linux 7.6 (or later). To configure and add a KVM host with another supported operating system, see the operating system’s installation information.

For detailed information on the supported guest operating systems, see the Oracle В® Linux: KVM User’s Guide.

To manage an Oracle Linux KVM host using Oracle Linux Virtualization Manager, prepare the KVM host by performing a fresh installation of Oracle Linux 7.6 (or later) and enabling the required repositories, and then you add the host to a data center using the Administration Portal.

2.2.1В Preparing a KVM Host

Before you can add an Oracle Linux KVM host, prepare it by performing a fresh installation of Oracle Linux 7.6 (or later) and enabling the required repositories. You can download the installation ISO for the latest Oracle Linux 7 update from the Oracle Software Delivery Cloud at https://edelivery.oracle.com.

Install Oracle Linux 7 on the host.

Select Minimal Install as the base environment for the installation.

Do not install any additional packages until after you have added the host to the Manager, because they may cause dependency issues.

(Optional) If you use a proxy server for Internet access, configure Yum with the proxy server settings. For more information, see Yum Configuration in the Oracle В® Linux 7: Managing Software.

Subscribe the system to the required channels through ULN OR install the Release 4.3.10 package using yum and enable the required repositories.

For ULN registered hosts only : If the host is registered on ULN, subscribe the system to the required channels.

On the Systems tab, click the link named for the host in the list of registered machines.

On the System Details page, click Manage Subscriptions .

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