$ openstack role add --user <user> --project <project> swiftoperatorinstall-config.yaml file for RHOSPIn OpenShift Container Platform version 4.6, you can install a customized cluster on
Red Hat OpenStack Platform (RHOSP). To customize the installation, modify parameters in the install-config.yaml before you install the cluster.
Review details about the OpenShift Container Platform installation and update processes.
Verify that OpenShift Container Platform 4.6 is compatible with your RHOSP version in the Available platforms section. You can also compare platform support across different versions by viewing the OpenShift Container Platform on RHOSP support matrix.
Verify that your network configuration does not rely on a provider network. Provider networks are not supported.
Have a storage service installed in RHOSP, like block storage (Cinder) or object storage (Swift). Object storage is the recommended storage technology for OpenShift Container Platform registry cluster deployment. For more information, see Optimizing storage.
Have metadata service enabled in RHOSP
To support an OpenShift Container Platform installation, your Red Hat OpenStack Platform (RHOSP) quota must meet the following requirements:
| Resource | Value |
|---|---|
Floating IP addresses |
3 |
Ports |
15 |
Routers |
1 |
Subnets |
1 |
RAM |
112 GB |
vCPUs |
28 |
Volume storage |
275 GB |
Instances |
7 |
Security groups |
3 |
Security group rules |
60 |
A cluster might function with fewer than recommended resources, but its performance is not guaranteed.
|
If RHOSP object storage (Swift) is available and operated by a user account with the |
By default, your security group and security group rule quotas might be low. If you encounter problems, run openstack quota set --secgroups 3 --secgroup-rules 60 <project> as an administrator to increase them.
|
An OpenShift Container Platform deployment comprises control plane machines, compute machines, and a bootstrap machine.
By default, the OpenShift Container Platform installation process stands up three control plane and three compute machines.
Each machine requires:
An instance from the RHOSP quota
A port from the RHOSP quota
A flavor with at least 16 GB memory, 4 vCPUs, and 25 GB storage space
|
Compute machines host the applications that you run on OpenShift Container Platform; aim to run as many as you can. |
During installation, a bootstrap machine is temporarily provisioned to stand up the control plane. After the production control plane is ready, the bootstrap machine is deprovisioned.
The bootstrap machine requires:
An instance from the RHOSP quota
A port from the RHOSP quota
A flavor with at least 16 GB memory, 4 vCPUs, and 25 GB storage space
In OpenShift Container Platform 4.6, you require access to the Internet to install your cluster.
You must have Internet access to:
Access OpenShift Cluster Manager to download the installation program and perform subscription management. If the cluster has internet access and you do not disable Telemetry, that service automatically entitles your cluster.
Access Quay.io to obtain the packages that are required to install your cluster.
Obtain the packages that are required to perform cluster updates.
|
If your cluster cannot have direct Internet access, you can perform a restricted network installation on some types of infrastructure that you provision. During that process, you download the content that is required and use it to populate a mirror registry with the packages that you need to install a cluster and generate the installation program. With some installation types, the environment that you install your cluster in will not require Internet access. Before you update the cluster, you update the content of the mirror registry. |
Swift is operated by a user account with the swiftoperator role. Add the role to an account before you run the installation program.
|
If the Red Hat OpenStack Platform (RHOSP) object storage service, commonly known as Swift, is available, OpenShift Container Platform uses it as the image registry storage. If it is unavailable, the installation program relies on the RHOSP block storage service, commonly known as Cinder. If Swift is present and you want to use it, you must enable access to it. If it is not present, or if you do not want to use it, skip this section. |
You have a RHOSP administrator account on the target environment.
The Swift service is installed.
On Ceph RGW, the account in url option is enabled.
To enable Swift on RHOSP:
As an administrator in the RHOSP CLI, add the swiftoperator role to the account that will access Swift:
$ openstack role add --user <user> --project <project> swiftoperatorYour RHOSP deployment can now use Swift for the image registry.
The OpenShift Container Platform installation process requires external network access. You must provide an external network value to it, or deployment fails. Before you begin the process, verify that a network with the external router type exists in Red Hat OpenStack Platform (RHOSP).
Using the RHOSP CLI, verify the name and ID of the 'External' network:
$ openstack network list --long -c ID -c Name -c "Router Type"+--------------------------------------+----------------+-------------+
| ID | Name | Router Type |
+--------------------------------------+----------------+-------------+
| 148a8023-62a7-4672-b018-003462f8d7dc | public_network | External |
+--------------------------------------+----------------+-------------+A network with an external router type appears in the network list. If at least one does not, see Creating a default floating IP network and Creating a default provider network.
|
If the external network’s CIDR range overlaps one of the default network ranges, you must change the matching network ranges in the The default network ranges are:
|
| If the installation program finds multiple networks with the same name, it sets one of them at random. To avoid this behavior, create unique names for resources in RHOSP. |
|
If the Neutron trunk service plug-in is enabled, a trunk port is created by default. For more information, see Neutron trunk port. |
The OpenShift Container Platform installation program relies on a file that is called clouds.yaml. The file describes Red Hat OpenStack Platform (RHOSP) configuration parameters, including the project name, log in information, and authorization service URLs.
Create the clouds.yaml file:
If your RHOSP distribution includes the Horizon web UI, generate a clouds.yaml file in it.
|
Remember to add a password to the |
If your RHOSP distribution does not include the Horizon web UI, or you do not want to use Horizon, create the file yourself. For detailed information about clouds.yaml, see Config files in the RHOSP documentation.
clouds:
shiftstack:
auth:
auth_url: http://10.10.14.42:5000/v3
project_name: shiftstack
username: shiftstack_user
password: XXX
user_domain_name: Default
project_domain_name: Default
dev-env:
region_name: RegionOne
auth:
username: 'devuser'
password: XXX
project_name: 'devonly'
auth_url: 'https://10.10.14.22:5001/v2.0'If your RHOSP installation uses self-signed certificate authority (CA) certificates for endpoint authentication:
Copy the certificate authority file to your machine.
Add the machine to the certificate authority trust bundle:
$ sudo cp ca.crt.pem /etc/pki/ca-trust/source/anchors/Update the trust bundle:
$ sudo update-ca-trust extractAdd the cacerts key to the clouds.yaml file. The value must be an absolute, non-root-accessible path to the CA certificate:
clouds:
shiftstack:
...
cacert: "/etc/pki/ca-trust/source/anchors/ca.crt.pem"|
After you run the installer with a custom CA certificate, you can update the certificate by editing the value of the |
Place the clouds.yaml file in one of the following locations:
The value of the OS_CLIENT_CONFIG_FILE environment variable
The current directory
A Unix-specific user configuration directory, for example ~/.config/openstack/clouds.yaml
A Unix-specific site configuration directory, for example /etc/openstack/clouds.yaml
The installation program searches for clouds.yaml in that order.
Before you install OpenShift Container Platform, download the installation file on a local computer.
You have a computer that runs Linux or macOS, with 500 MB of local disk space
Access the Infrastructure Provider page on the OpenShift Cluster Manager site. If you have a Red Hat account, log in with your credentials. If you do not, create an account.
Select your infrastructure provider.
Navigate to the page for your installation type, download the installation program for your operating system, and place the file in the directory where you will store the installation configuration files.
|
The installation program creates several files on the computer that you use to install your cluster. You must keep the installation program and the files that the installation program creates after you finish installing the cluster. Both files are required to delete the cluster. |
|
Deleting the files created by the installation program does not remove your cluster, even if the cluster failed during installation. To remove your cluster, complete the OpenShift Container Platform uninstallation procedures for your specific cloud provider. |
Extract the installation program. For example, on a computer that uses a Linux operating system, run the following command:
$ tar xvf openshift-install-linux.tar.gzDownload your installation pull secret from the Red Hat OpenShift Cluster Manager. This pull secret allows you to authenticate with the services that are provided by the included authorities, including Quay.io, which serves the container images for OpenShift Container Platform components.
You can customize the OpenShift Container Platform cluster you install on Red Hat OpenStack Platform (RHOSP).
Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.
Create the install-config.yaml file.
Change to the directory that contains the installation program and run the following command:
$ ./openshift-install create install-config --dir <installation_directory> (1)| 1 | For <installation_directory>, specify the directory name to store the
files that the installation program creates. |
|
Specify an empty directory. Some installation assets, like bootstrap X.509 certificates have short expiration intervals, so you must not reuse an installation directory. If you want to reuse individual files from another cluster installation, you can copy them into your directory. However, the file names for the installation assets might change between releases. Use caution when copying installation files from an earlier OpenShift Container Platform version. |
At the prompts, provide the configuration details for your cloud:
Optional: Select an SSH key to use to access your cluster machines.
|
For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your |
Select openstack as the platform to target.
Specify the Red Hat OpenStack Platform (RHOSP) external network name to use for installing the cluster.
Specify the floating IP address to use for external access to the OpenShift API.
Specify a RHOSP flavor with at least 16 GB RAM to use for control plane and compute nodes.
Select the base domain to deploy the cluster to. All DNS records will be sub-domains of this base and will also include the cluster name.
Enter a name for your cluster. The name must be 14 or fewer characters long.
Paste the pull secret from the Red Hat OpenShift Cluster Manager.
Modify the install-config.yaml file. You can find more information about
the available parameters in the Installation configuration parameters section.
Back up the install-config.yaml file so that you can use
it to install multiple clusters.
|
The |
Production environments can deny direct access to the Internet and instead have
an HTTP or HTTPS proxy available. You can configure a new OpenShift Container Platform
cluster to use a proxy by configuring the proxy settings in the
install-config.yaml file.
You have an existing install-config.yaml file.
You reviewed the sites that your cluster requires access to and determined whether any of them need to bypass the proxy. By default, all cluster egress traffic is proxied, including calls to hosting cloud provider APIs. You added sites to the Proxy object’s spec.noProxy field to bypass the proxy if necessary.
|
The For installations on Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Azure, and Red Hat OpenStack Platform (RHOSP), the |
Edit your install-config.yaml file and add the proxy settings. For example:
apiVersion: v1
baseDomain: my.domain.com
proxy:
httpProxy: http://<username>:<pswd>@<ip>:<port> (1)
httpsProxy: https://<username>:<pswd>@<ip>:<port> (2)
noProxy: example.com (3)
additionalTrustBundle: | (4)
-----BEGIN CERTIFICATE-----
<MY_TRUSTED_CA_CERT>
-----END CERTIFICATE-----
...| 1 | A proxy URL to use for creating HTTP connections outside the cluster. The
URL scheme must be http. |
| 2 | A proxy URL to use for creating HTTPS connections outside the cluster. |
| 3 | A comma-separated list of destination domain names, IP addresses, or
other network CIDRs to exclude from proxying. Preface a domain with . to match subdomains only. For example, .y.com matches x.y.com, but not y.com. Use * to bypass the proxy for all destinations. |
| 4 | If provided, the installation program generates a config map that is named user-ca-bundle in
the openshift-config namespace to hold the additional CA
certificates. If you provide additionalTrustBundle and at least one proxy setting, the Proxy object is configured to reference the user-ca-bundle config map in the trustedCA field. The Cluster Network
Operator then creates a trusted-ca-bundle config map that merges the contents specified for the trustedCA parameter
with the RHCOS trust bundle. The additionalTrustBundle field is required unless
the proxy’s identity certificate is signed by an authority from the RHCOS trust
bundle. |
|
The installation program does not support the proxy |
Save the file and reference it when installing OpenShift Container Platform.
The installation program creates a cluster-wide proxy that is named cluster that uses the proxy
settings in the provided install-config.yaml file. If no proxy settings are
provided, a cluster Proxy object is still created, but it will have a nil
spec.
|
Only the |
Before you deploy an OpenShift Container Platform cluster, you provide parameter values to describe your account on the cloud platform that hosts your cluster and optionally customize your cluster’s platform. When you create the install-config.yaml installation configuration file, you provide values for the required parameters through the command line. If you customize your cluster, you can modify the install-config.yaml file to provide more details about the platform.
|
After installation, you cannot modify these parameters in the |
|
The |
Required installation configuration parameters are described in the following table:
| Parameter | Description | Values |
|---|---|---|
|
The API version for the |
String |
|
The base domain of your cloud provider. The base domain is used to create routes to your OpenShift Container Platform cluster components. The full DNS name for your cluster is a combination of the |
A fully-qualified domain or subdomain name, such as |
|
Kubernetes resource |
Object |
|
The name of the cluster. DNS records for the cluster are all subdomains of |
String of lowercase letters, hyphens ( |
|
The configuration for the specific platform upon which to perform the installation: |
Object |
|
Get a pull secret from the Red Hat OpenShift Cluster Manager to authenticate downloading container images for OpenShift Container Platform components from services such as Quay.io. |
|
You can customize your installation configuration based on the requirements of your existing network infrastructure. For example, you can expand the IP address block for the cluster network or provide different IP address blocks than the defaults.
Only IPv4 addresses are supported.
| Parameter | Description | Values | ||
|---|---|---|---|---|
|
The configuration for the cluster network. |
Object
|
||
|
The cluster network provider Container Network Interface (CNI) plug-in to install. |
Either |
||
|
The IP address blocks for pods. The default value is If you specify multiple IP address blocks, the blocks must not overlap. |
An array of objects. For example: |
||
|
Required if you use An IPv4 network. |
An IP address block in Classless Inter-Domain Routing (CIDR) notation.
The prefix length for an IPv4 block is between |
||
|
The subnet prefix length to assign to each individual node. For example, if |
A subnet prefix. The default value is |
||
|
The IP address block for services. The default value is The OpenShift SDN and OVN-Kubernetes network providers support only a single IP address block for the service network. |
An array with an IP address block in CIDR format. For example: |
||
|
The IP address blocks for machines. If you specify multiple IP address blocks, the blocks must not overlap. |
An array of objects. For example: |
||
|
Required if you use |
An IP network block in CIDR notation. For example,
|
Optional installation configuration parameters are described in the following table:
| Parameter | Description | Values | ||||
|---|---|---|---|---|---|---|
|
A PEM-encoded X.509 certificate bundle that is added to the nodes' trusted certificate store. This trust bundle may also be used when a proxy has been configured. |
String |
||||
|
The configuration for the machines that comprise the compute nodes. |
Array of machine-pool objects. For details, see the following "Machine-pool" table. |
||||
|
Determines the instruction set architecture of the machines in the pool. Currently, heteregeneous clusters are not supported, so all pools must specify the same architecture. Valid values are |
String |
||||
|
Whether to enable or disable simultaneous multithreading, or
|
|
||||
|
Required if you use |
|
||||
|
Required if you use |
|
||||
|
The number of compute machines, which are also known as worker machines, to provision. |
A positive integer greater than or equal to |
||||
|
The configuration for the machines that comprise the control plane. |
Array of |
||||
|
Determines the instruction set architecture of the machines in the pool. Currently, heterogeneous clusters are not supported, so all pools must specify the same architecture. Valid values are |
String |
||||
|
Whether to enable or disable simultaneous multithreading, or
|
|
||||
|
Required if you use |
|
||||
|
Required if you use |
|
||||
|
The number of control plane machines to provision. |
The only supported value is |
||||
|
The Cloud Credential Operator (CCO) mode. If no mode is specified, the CCO dynamically tries to determine the capabilities of the provided credentials, with a preference for mint mode on the platforms where multiple modes are supported.
|
|
||||
|
Enable or disable FIPS mode. The default is
|
|
||||
|
Sources and repositories for the release-image content. |
Array of objects. Includes a |
||||
|
Required if you use |
String |
||||
|
Specify one or more repositories that may also contain the same images. |
Array of strings |
||||
|
How to publish or expose the user-facing endpoints of your cluster, such as the Kubernetes API, OpenShift routes. |
Setting this field to
|
||||
|
The SSH key or keys to authenticate access your cluster machines.
|
One or more keys. For example: |
Additional RHOSP configuration parameters are described in the following table:
| Parameter | Description | Values |
|---|---|---|
|
For compute machines, the size in gigabytes of the root volume. If you do not set this value, machines use ephemeral storage. |
Integer, for example |
|
For compute machines, the root volume’s type. |
String, for example |
|
For control plane machines, the size in gigabytes of the root volume. If you do not set this value, machines use ephemeral storage. |
Integer, for example |
|
For control plane machines, the root volume’s type. |
String, for example |
|
The name of the RHOSP cloud to use from the list of clouds in the
|
String, for example |
|
The RHOSP external network name to be used for installation. |
String, for example |
|
The RHOSP flavor to use for control plane and compute machines. |
String, for example |
Optional RHOSP configuration parameters are described in the following table:
| Parameter | Description | Values |
|---|---|---|
|
Additional networks that are associated with compute machines. Allowed address pairs are not created for additional networks. |
A list of one or more UUIDs as strings. For example, |
|
Additional security groups that are associated with compute machines. |
A list of one or more UUIDs as strings. For example, |
|
RHOSP Compute (Nova) availability zones (AZs) to install machines on. If this parameter is not set, the installer relies on the default settings for Nova that the RHOSP administrator configured. On clusters that use Kuryr, RHOSP Octavia does not support availability zones. Load balancers and, if you are using the Amphora provider driver, OpenShift Container Platform services that rely on Amphora VMs, are not created according to the value of this property. |
A list of strings. For example, |
|
Additional networks that are associated with control plane machines. Allowed address pairs are not created for additional networks. |
A list of one or more UUIDs as strings. For example, |
|
Additional security groups that are associated with control plane machines. |
A list of one or more UUIDs as strings. For example, |
|
RHOSP Compute (Nova) availability zones (AZs) to install machines on. If this parameter is not set, the installer relies on the default settings for Nova that the RHOSP administrator configured. On clusters that use Kuryr, RHOSP Octavia does not support availability zones. Load balancers and, if you are using the Amphora provider driver, OpenShift Container Platform services that rely on Amphora VMs, are not created according to the value of this property. |
A list of strings. For example, |
|
The location from which the installer downloads the RHCOS image. You must set this parameter to perform an installation in a restricted network. |
An HTTP or HTTPS URL, optionally with an SHA-256 checksum. For example, |
|
The default machine pool platform configuration. |
|
|
An existing floating IP address to associate with the Ingress port. To use this property, you must also define the |
An IP address, for example |
|
An existing floating IP address to associate with the API load balancer. To use this property, you must also define the |
An IP address, for example |
|
IP addresses for external DNS servers that cluster instances use for DNS resolution. |
A list of IP addresses as strings. For example, |
|
The UUID of a RHOSP subnet that the cluster’s nodes use. Nodes and virtual IP (VIP) ports are created on this subnet. The first item in If you deploy to a custom subnet, you cannot specify an external DNS server to the OpenShift Container Platform installer. Instead, add DNS to the subnet in RHOSP. |
A UUID as a string. For example, |
Optionally, you can deploy a cluster on a Red Hat OpenStack Platform (RHOSP) subnet of your choice. The subnet’s GUID is passed as the value of platform.openstack.machinesSubnet in the install-config.yaml file.
This subnet is used as the cluster’s primary subnet; nodes and ports are created on it.
Before you run the OpenShift Container Platform installer with a custom subnet, verify that:
The target network and subnet are available.
DHCP is enabled on the target subnet.
You can provide installer credentials that have permission to create ports on the target network.
If your network configuration requires a router, it is created in RHOSP. Some configurations rely on routers for floating IP address translation.
Your network configuration does not rely on a provider network. Provider networks are not supported.
|
By default, the API VIP takes x.x.x.5 and the Ingress VIP takes x.x.x.7 from your network’s CIDR block. To override these default values,
set values for |
install-config.yaml file for RHOSPThis sample install-config.yaml demonstrates all of the possible Red Hat OpenStack Platform (RHOSP)
customization options.
This sample file is provided for reference only. You must obtain your
install-config.yaml file by using the installation program.
|
apiVersion: v1
baseDomain: example.com
clusterID: os-test
controlPlane:
name: master
platform: {}
replicas: 3
compute:
- name: worker
platform:
openstack:
type: ml.large
replicas: 3
metadata:
name: example
networking:
clusterNetwork:
- cidr: 10.128.0.0/14
hostPrefix: 23
machineNetwork:
- cidr: 10.0.0.0/16
serviceNetwork:
- 172.30.0.0/16
networkType: OpenShiftSDN
platform:
openstack:
cloud: mycloud
externalNetwork: external
computeFlavor: m1.xlarge
lbFloatingIP: 128.0.0.1
fips: false
pullSecret: '{"auths": ...}'
sshKey: ssh-ed25519 AAAA...Optionally, you can set the affinity policy for compute machines during installation. The installer does not select an affinity policy for compute machines by default.
You can also create machine sets that use particular RHOSP server groups after installation.
|
Control plane machines are created with a |
|
You can learn more about RHOSP instance scheduling and placement in the RHOSP documentation. |
Create the install-config.yaml file and complete any modifications to it.
Using the RHOSP command-line interface, create a server group for your compute machines. For example:
$ openstack \
--os-compute-api-version=2.15 \
server group create \
--policy anti-affinity \
my-openshift-worker-groupFor more information, see the server group create command documentation.
Change to the directory that contains the installation program and create the manifests:
$ ./openshift-install create manifests --dir=<installation_directory>where:
installation_directory Specifies the name of the directory that contains the install-config.yaml file for your cluster.
Open manifests/99_openshift-cluster-api_worker-machineset-0.yaml, the MachineSet definition file.
Add the property serverGroupID to the definition beneath the spec.template.spec.providerSpec.value property. For example:
apiVersion: machine.openshift.io/v1beta1
kind: MachineSet
metadata:
labels:
machine.openshift.io/cluster-api-cluster: <infrastructure_ID>
machine.openshift.io/cluster-api-machine-role: <node_role>
machine.openshift.io/cluster-api-machine-type: <node_role>
name: <infrastructure_ID>-<node_role>
namespace: openshift-machine-api
spec:
replicas: <number_of_replicas>
selector:
matchLabels:
machine.openshift.io/cluster-api-cluster: <infrastructure_ID>
machine.openshift.io/cluster-api-machineset: <infrastructure_ID>-<node_role>
template:
metadata:
labels:
machine.openshift.io/cluster-api-cluster: <infrastructure_ID>
machine.openshift.io/cluster-api-machine-role: <node_role>
machine.openshift.io/cluster-api-machine-type: <node_role>
machine.openshift.io/cluster-api-machineset: <infrastructure_ID>-<node_role>
spec:
providerSpec:
value:
apiVersion: openstackproviderconfig.openshift.io/v1alpha1
cloudName: openstack
cloudsSecret:
name: openstack-cloud-credentials
namespace: openshift-machine-api
flavor: <nova_flavor>
image: <glance_image_name_or_location>
serverGroupID: aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee (1)
kind: OpenstackProviderSpec
networks:
- filter: {}
subnets:
- filter:
name: <subnet_name>
tags: openshiftClusterID=<infrastructure_ID>
securityGroups:
- filter: {}
name: <infrastructure_ID>-<node_role>
serverMetadata:
Name: <infrastructure_ID>-<node_role>
openshiftClusterID: <infrastructure_ID>
tags:
- openshiftClusterID=<infrastructure_ID>
trunk: true
userDataSecret:
name: <node_role>-user-data
availabilityZone: <optional_openstack_availability_zone>| 1 | Add the UUID of your server group here. |
Optional: Back up the manifests/99_openshift-cluster-api_worker-machineset-0.yaml file. The installation program deletes the manifests/ directory when creating the cluster.
When you install the cluster, the installer uses the MachineSet definition that you modified to create compute machines within your RHOSP server group.
If you want to perform installation debugging or disaster recovery on your cluster, you must provide an SSH key to both your ssh-agent and the installation program. You can use this key to access the bootstrap machine in a public cluster to troubleshoot installation issues.
|
In a production environment, you require disaster recovery and debugging. |
You can use this key to SSH into the master nodes as the user core. When you
deploy the cluster, the key is added to the core user’s
~/.ssh/authorized_keys list.
If you do not have an SSH key that is configured for password-less authentication on your computer, create one. For example, on a computer that uses a Linux operating system, run the following command:
$ ssh-keygen -t ed25519 -N '' \
-f <path>/<file_name> (1)| 1 | Specify the path and file name, such as ~/.ssh/id_rsa, of the new SSH key. If you have an existing key pair, ensure your public key is in the your ~/.ssh directory. |
Running this command generates an SSH key that does not require a password in the location that you specified.
|
If you plan to install an OpenShift Container Platform cluster that uses FIPS Validated / Modules in Process cryptographic libraries on the |
Start the ssh-agent process as a background task:
$ eval "$(ssh-agent -s)"Agent pid 31874|
If your cluster is in FIPS mode, only use FIPS-compliant algorithms to generate the SSH key. The key must be either RSA or ECDSA. |
Add your SSH private key to the ssh-agent:
$ ssh-add <path>/<file_name> (1)Identity added: /home/<you>/<path>/<file_name> (<computer_name>)| 1 | Specify the path and file name for your SSH private key, such as ~/.ssh/id_rsa |
When you install OpenShift Container Platform, provide the SSH public key to the installation program.
At deployment, all OpenShift Container Platform machines are created in a Red Hat OpenStack Platform (RHOSP)-tenant network. Therefore, they are not accessible directly in most RHOSP deployments.
You can configure OpenShift Container Platform API and application access by using floating IP addresses (FIPs) during installation. You can also complete an installation without configuring FIPs, but the installer will not configure a way to reach the API or applications externally.
Create floating IP (FIP) addresses for external access to the OpenShift Container Platform API and cluster applications.
Using the Red Hat OpenStack Platform (RHOSP) CLI, create the API FIP:
$ openstack floating ip create --description "API <cluster_name>.<base_domain>" <external_network>Using the Red Hat OpenStack Platform (RHOSP) CLI, create the apps, or Ingress, FIP:
$ openstack floating ip create --description "Ingress <cluster_name>.<base_domain>" <external_network>Add records that follow these patterns to your DNS server for the API and Ingress FIPs:
api.<cluster_name>.<base_domain>. IN A <API_FIP>
*.apps.<cluster_name>.<base_domain>. IN A <apps_FIP>|
If you do not control the DNS server, you can add the record to your |
Add the FIPs to the
install-config.yaml
file as the values of the following
parameters:
platform.openstack.ingressFloatingIP
platform.openstack.lbFloatingIP
If you use these values, you must also enter an external network as the value of the
platform.openstack.externalNetwork parameter in the install-config.yaml file.
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You can make OpenShift Container Platform resources available outside of the cluster by assigning a floating IP address and updating your firewall configuration. |
You can install OpenShift Container Platform on Red Hat OpenStack Platform (RHOSP) without providing floating IP addresses.
In the
install-config.yaml
file, do not define the following
parameters:
platform.openstack.ingressFloatingIP
platform.openstack.lbFloatingIP
If you cannot provide an external network, you can also leave platform.openstack.externalNetwork blank. If you do not provide a value for platform.openstack.externalNetwork, a router is not created for you, and, without additional action, the installer will fail to retrieve an image from Glance. You must configure external connectivity on your own.
If you run the installer from a system that cannot reach the cluster API due to a lack of floating IP addresses or name resolution, installation fails. To prevent installation failure in these cases, you can use a proxy network or run the installer from a system that is on the same network as your machines.
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You can enable name resolution by creating DNS records for the API and Ingress ports. For example: If you do not control the DNS server, you can add the record to your |
You can install OpenShift Container Platform on a compatible cloud platform.
|
You can run the |
Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.
Change to the directory that contains the installation program and initialize the cluster deployment:
$ ./openshift-install create cluster --dir <installation_directory> \ (1)
--log-level=info (2)
| 1 | For <installation_directory>, specify the
location of your customized ./install-config.yaml file. |
| 2 | To view different installation details, specify warn, debug, or
error instead of info. |
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If the cloud provider account that you configured on your host does not have sufficient permissions to deploy the cluster, the installation process stops, and the missing permissions are displayed. |
When the cluster deployment completes, directions for accessing your cluster,
including a link to its web console and credentials for the kubeadmin user,
display in your terminal.
...
INFO Install complete!
INFO To access the cluster as the system:admin user when using 'oc', run 'export KUBECONFIG=/home/myuser/install_dir/auth/kubeconfig'
INFO Access the OpenShift web-console here: https://console-openshift-console.apps.mycluster.example.com
INFO Login to the console with user: "kubeadmin", and password: "4vYBz-Ee6gm-ymBZj-Wt5AL"
INFO Time elapsed: 36m22s|
The cluster access and credential information also outputs to |
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You must not delete the installation program or the files that the installation program creates. Both are required to delete the cluster. |
You can verify your OpenShift Container Platform cluster’s status during or after installation.
In the cluster environment, export the administrator’s kubeconfig file:
$ export KUBECONFIG=<installation_directory>/auth/kubeconfig (1)| 1 | For <installation_directory>, specify the path to the directory that you stored the installation files in. |
The kubeconfig file contains information about the cluster that is used by the CLI to connect a client to the correct cluster and API server.
View the control plane and compute machines created after a deployment:
$ oc get nodesView your cluster’s version:
$ oc get clusterversionView your Operators' status:
$ oc get clusteroperatorView all running pods in the cluster:
$ oc get pods -AYou can log in to your cluster as a default system user by exporting the cluster kubeconfig file.
The kubeconfig file contains information about the cluster that is used by the CLI to connect a client to the correct cluster and API server.
The file is specific to a cluster and is created during OpenShift Container Platform installation.
You deployed an OpenShift Container Platform cluster.
You installed the oc CLI.
Export the kubeadmin credentials:
$ export KUBECONFIG=<installation_directory>/auth/kubeconfig (1)| 1 | For <installation_directory>, specify the path to the directory that you stored
the installation files in. |
Verify you can run oc commands successfully using the exported configuration:
$ oc whoamisystem:adminSee Accessing the web console for more details about accessing and understanding the OpenShift Container Platform web console.
In OpenShift Container Platform 4.6, the Telemetry service, which runs by default to provide metrics about cluster health and the success of updates, requires internet access. If your cluster is connected to the internet, Telemetry runs automatically, and your cluster is registered to OpenShift Cluster Manager.
After you confirm that your OpenShift Cluster Manager inventory is correct, either maintained automatically by Telemetry or manually by using OpenShift Cluster Manager, use subscription watch to track your OpenShift Container Platform subscriptions at the account or multi-cluster level.
See About remote health monitoring for more information about the Telemetry service
If necessary, you can opt out of remote health reporting.
If you need to enable external access to node ports, configure ingress cluster traffic by using a node port.
If you did not configure RHOSP to accept application traffic over floating IP addresses, configure RHOSP access with floating IP addresses.