[Docs] Change heading in target hosts
This brings consistency between target hosts configuration and deploy host configuration, to be easier to read. Change-Id: Ibaa01dfc6190f41ea0a3d1ca353296c3e8ec4f7f
This commit is contained in:
Jean-Philippe Evrard
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@ -17,6 +17,9 @@ To use a target host as a deployment host, follow the steps in
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:deploy_guide:`Prepare the target hosts <targethosts.html>` on
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the deployment host.
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Configuring the operating system
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================================
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Install the operating system
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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@ -30,8 +33,8 @@ hosts:
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Configure at least one network interface to access the Internet or suitable
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local repositories.
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Configure the operating system (Ubuntu)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Configure Ubuntu
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~~~~~~~~~~~~~~~~
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Install additional software packages and configure Network Time Protocol (NTP).
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Before you begin, we recommend upgrading your system packages and kernel.
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@ -61,8 +64,8 @@ Before you begin, we recommend upgrading your system packages and kernel.
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#. Configure NTP to synchronize with a suitable time source.
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Configure the operating system (CentOS)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Configure CentOS
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~~~~~~~~~~~~~~~~
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Install additional software packages and configure Network Time Protocol (NTP).
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Before you begin, we recommend upgrading your system packages and kernel.
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@ -103,8 +106,8 @@ Before you begin, we recommend upgrading your system packages and kernel.
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deployments. Until that work is complete, deployers must maintain their
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own firewall rulesets or disable the firewall entirely.
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Configure the operating system (openSUSE)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Configure openSUSE
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~~~~~~~~~~~~~~~~~~
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Install additional software packages and configure Network Time Protocol (NTP).
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Before you begin, we recommend upgrading your system packages and kernel.
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@ -128,8 +131,18 @@ Before you begin, we recommend upgrading your system packages and kernel.
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#. Configure NTP to synchronize with a suitable time source.
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Configure SSH keys
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==================
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Ansible uses SSH with public key authentication to connect the
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deployment host and target hosts. To reduce user
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interaction during Ansible operations, do not include passphrases with
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key pairs. However, if a passphrase is required, consider using the
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``ssh-agent`` and ``ssh-add`` commands to temporarily store the
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passphrase before performing Ansible operations.
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Configure the network
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~~~~~~~~~~~~~~~~~~~~~
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=====================
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Ansible deployments fail if the deployment server can't use Secure Shell (SSH)
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to connect to the containers.
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@ -147,7 +160,7 @@ deployment host:
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Container management: 172.29.236.0/22 (VLAN 10)
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Install the source and dependencies
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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===================================
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Install the source and dependencies for the deployment host.
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@ -181,13 +194,3 @@ Install the source and dependencies for the deployment host.
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# scripts/bootstrap-ansible.sh
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Configure SSH keys
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~~~~~~~~~~~~~~~~~~
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Ansible uses SSH with public key authentication to connect the
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deployment host and target hosts. To reduce user
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interaction during Ansible operations, do not include passphrases with
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key pairs. However, if a passphrase is required, consider using the
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``ssh-agent`` and ``ssh-add`` commands to temporarily store the
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passphrase before performing Ansible operations.
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@ -1,8 +1,9 @@
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=====================
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Network configuration
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=====================
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Configuring the network
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=======================
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The following table shows bridges that are to be configured on hosts.
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OpenStack-Ansible uses bridges to connect physical and logical network
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interfaces on the host to virtual network interfaces within containers.
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Target hosts need to be configured with the following network bridges:
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+-------------+-----------------------+-------------------------------------+
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| Bridge name | Best configured on | With a static IP |
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@ -31,20 +32,14 @@ For use case examples, refer to
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:dev_docs:`User Guides <user/index.html>`.
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Host network bridges
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~~~~~~~~~~~~~~~~~~~~
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OpenStack-Ansible uses bridges to connect physical and logical network
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interfaces on the host to virtual network interfaces within containers.
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Target hosts are configured with the following network bridges.
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Host network bridges information
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* LXC internal: ``lxcbr0``
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The ``lxcbr0`` bridge is **required**, but OpenStack-Ansible configures it
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automatically. It provides external (typically Internet) connectivity to
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containers.
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The ``lxcbr0`` bridge is **required** for LXC, but OpenStack-Ansible
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configures it automatically. It provides external (typically Internet)
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connectivity to containers with dnsmasq (DHCP/DNS) + NAT.
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This bridge does not directly attach to any physical or logical
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interfaces on the host because iptables handles connectivity. It
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@ -56,7 +51,7 @@ Target hosts are configured with the following network bridges.
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* Container management: ``br-mgmt``
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The ``br-mgmt`` bridge is **required**. It provides management of and
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The ``br-mgmt`` bridge provides management of and
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communication between the infrastructure and OpenStack services.
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The bridge attaches to a physical or logical interface, typically a
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@ -67,9 +62,8 @@ Target hosts are configured with the following network bridges.
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* Storage:``br-storage``
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The ``br-storage`` bridge is **optional**, but recommended for production
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environments. It provides segregated access to Block Storage devices
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between OpenStack services and Block Storage devices.
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The ``br-storage`` bridge provides segregated access to Block Storage
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devices between OpenStack services and Block Storage devices.
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The bridge attaches to a physical or logical interface, typically a
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``bond0`` VLAN subinterface. It also attaches to ``eth2`` in each
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@ -80,9 +74,9 @@ Target hosts are configured with the following network bridges.
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* OpenStack Networking tunnel: ``br-vxlan``
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The ``br-vxlan`` bridge is **required** if the environment is configured to
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allow projects to create virtual networks. It provides the interface for
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virtual (VXLAN) tunnel networks.
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The ``br-vxlan`` bridge is **required if** the environment is configured to
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allow projects to create virtual networks using VXLAN.
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It provides the interface for virtual (VXLAN) tunnel networks.
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The bridge attaches to a physical or logical interface, typically a
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``bond1`` VLAN subinterface. It also attaches to ``eth10`` in each
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@ -93,7 +87,7 @@ Target hosts are configured with the following network bridges.
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* OpenStack Networking provider: ``br-vlan``
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The ``br-vlan`` bridge is **required**. It provides infrastructure for VLAN
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The ``br-vlan`` bridge is provides infrastructure for VLAN
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tagged or flat (no VLAN tag) networks.
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The bridge attaches to a physical or logical interface, typically ``bond1``.
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@ -1,6 +1,5 @@
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============================================
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Configuring the operating system and storage
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============================================
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Configuring the operating system
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================================
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This section describes the installation and configuration of operating
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systems for the target hosts, as well as deploying SSH keys and
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@ -27,8 +26,8 @@ installation on target hosts that do not have local (console) access.
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We also recommend setting your locale to `en_US.UTF-8`. Other locales might
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work, but they are not tested or supported.
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Configure the operating system (Ubuntu)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Configure Ubuntu
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~~~~~~~~~~~~~~~~
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#. Update package source lists
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@ -74,8 +73,8 @@ Configure the operating system (Ubuntu)
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#. Reboot the host to activate the changes and use the new kernel.
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Configure the operating system (CentOS)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Configure CentOS
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~~~~~~~~~~~~~~~~
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#. Upgrade the system packages and kernel:
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@ -117,8 +116,8 @@ Configure the operating system (CentOS)
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#. Reboot the host to activate the changes and use the new kernel.
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Configure the operating system (openSUSE)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Configure openSUSE
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~~~~~~~~~~~~~~~~~~
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#. Upgrade the system packages and kernel:
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@ -160,8 +159,8 @@ Configure the operating system (openSUSE)
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#. Reboot the host to activate the changes and use the new kernel.
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Deploying Secure Shell (SSH) keys
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Configure SSH keys
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==================
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Ansible uses SSH to connect the deployment host and target hosts.
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@ -190,16 +189,14 @@ practices, see `GitHub's documentation about generating SSH keys`_.
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``lxc_container_ssh_key`` variable to the public key for
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the container.
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.. _configuring-storage:
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Configure storage
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~~~~~~~~~~~~~~~~~
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Configuring the storage
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=======================
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`Logical Volume Manager (LVM)`_ enables a single device to be split into
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multiple logical volumes that appear as a physical storage device to the
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operating system. The Block Storage (cinder) service, and the LXC containers
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that run the OpenStack infrastructure, can optionally use LVM for their data
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storage.
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operating system. The Block Storage (cinder) service, and LXC containers
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that optionally run the OpenStack infrastructure,
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can optionally use LVM for their data storage.
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.. note::
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@ -217,7 +214,8 @@ storage.
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# vgcreate cinder-volumes physical_volume_device_path
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#. Optionally, create an LVM volume group named ``lxc`` for container file
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systems. If the ``lxc`` volume group does not exist, containers are
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systems if you want to use LXC with LVM.
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If the ``lxc`` volume group does not exist, containers are
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automatically installed on the file system under ``/var/lib/lxc`` by
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default.
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@ -4,11 +4,8 @@
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Prepare the target hosts
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========================
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.. toctree::
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:maxdepth: 2
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targethosts-prepare.rst
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targethosts-networkconfig.rst
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.. figure:: figures/installation-workflow-targethosts.png
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:width: 100%
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.. include:: targethosts-prepare.rst
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.. include:: targethosts-networkconfig.rst
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