The page you’re looking for does not exist. It may have been moved. + You can return to the + start page, or follow one of the + links in the navigation to the left.
+If you arrived on this page by clicking on a link, please notify the + owner of the site that the link is broken. If you typed the URL of this + page manually, please double check that you entered the address correctly.
+CRC disables cluster monitoring by default to ensure that CRC can run on a typical notebook. +Monitoring is responsible for listing your cluster in the Red Hat Hybrid Cloud Console. +Follow this procedure to enable monitoring for your cluster.
+You must assign additional memory to the CRC instance.
+At least 14 GiB of memory, a value of 14336, is recommended for core functionality.
+Increased workloads will require more memory.
+For more information, see Configuring the instance.
Set the enable-cluster-monitoring configurable property to true:
$ crc config set enable-cluster-monitoring true+
Start the instance:
+$ crc start+
| + + | +
+
+
+Cluster monitoring cannot be disabled.
+To remove monitoring, set the |
+
To verify CRC can run on a typical notebook, some resource-heavy services get disabled by default. +These services can be enabled by manually removing the desired Operator from the Operator override list.
+A running CRC virtual machine and a working oc command.
+For more information, see Accessing the OpenShift cluster with oc.
You must log in through oc as the kubeadmin user.
List unmanaged Operators and note the numeric index for the desired Operator:
+On Linux or macOS:
+$ oc get clusterversion version -ojsonpath='{range .spec.overrides[*]}{.name}{"\n"}{end}' | nl -v 0
+On Microsoft Windows using PowerShell:
+PS> oc get clusterversion version -ojsonpath='{range .spec.overrides[*]}{.name}{"\n"}{end}' | % {$nl++;"`t$($nl-1) `t $_"};$nl=0
+Start the desired Operator using the identified numeric index:
+$ oc patch clusterversion/version --type='json' -p '[{"op":"remove", "path":"/spec/overrides/<unmanaged-operator-index>"}]'
+clusterversion.config.openshift.io/version patched
+Use the crc config command to configure both the crc executable and the CRC instance.
+The crc config command requires a subcommand to act on the configuration.
+The available subcommands are get, set, unset, and view.
+The get, set, and unset subcommands operate on named configurable properties.
+Run the crc config --help command to list the available properties.
You can also use the crc config command to configure the behavior of the startup checks for the crc start and crc setup commands.
+By default, startup checks report an error and stop execution when their conditions are not met.
+Set the value of a property starting with skip-check to true to skip the check.
The CRC executable provides commands to view configurable properties and the current CRC configuration.
+To view the available configurable properties:
+$ crc config --help+
To view the values for a configurable property:
+$ crc config get <property>+
To view the complete current configuration:
+$ crc config view+
| + + | +
+
+
+The |
+
You can change the container runtime used for the CRC instance by selecting the desired preset.
+You can change the selected preset using the command line interface.
+| + + | +
+
+
+You cannot change the preset of an existing CRC instance. +Preset changes are only applied when a CRC instance is created. +To enable preset changes, you must delete the existing instance and start a new one. + |
+
Change the selected preset from the command line:
+$ crc config set preset <name>+
Valid preset names are:
+| Name | +Preset | +
|---|---|
|
+OpenShift Container Platform |
+
|
+OKD |
+
|
+MicroShift |
+
For more information about the minimum system requirements for each preset, see Minimum system requirements.
+Use the cpus and memory properties to configure the default number of vCPUs and amount of memory available to the CRC instance, respectively.
Alternatively, the number of vCPUs and amount of memory can be assigned using the --cpus and --memory flags to the crc start command, respectively.
| + + | +
+
+
+You cannot change the configuration of a running CRC instance. +To enable configuration changes, you must stop the running instance and start it again. + |
+
To configure the number of vCPUs available to the instance:
+$ crc config set cpus <number>+
The default value for the cpus property is 4.
+The number of vCPUs to assign must be greater than or equal to the default.
To start the instance with the desired number of vCPUs:
+$ crc start --cpus <number>+
To configure the memory available to the instance:
+$ crc config set memory <number-in-mib>+
| + + | +
+
+
+Values for available memory are set in mebibytes (MiB). +One gibibyte (GiB) of memory is equal to 1024 MiB. + |
+
The default value for the memory property is 10752.
+The amount of memory to assign must be greater than or equal to the default.
To start the instance with the desired amount of memory:
+$ crc start --memory <number-in-mib>+
CRC has the following minimum hardware and operating system requirements.
+CRC is supported on these architectures:
+| Preset | +AMD64 | +Intel 64 | +Apple silicon | +
|---|---|---|---|
OpenShift Container Platform |
+yes |
+yes |
+yes |
+
OKD |
+yes |
+yes |
+no |
+
MicroShift |
+yes |
+yes |
+yes |
+
CRC does not support nested virtualization.
+Depending on the desired container runtime, CRC requires the following system resources:
+4 physical CPU cores
+10.5 GB of free memory
+35 GB of storage space
+2 physical CPU cores
+4 GB of free memory
+35 GB of storage space
+| + + | +
+
+
+The OpenShift Container Platform and MicroShift presets require these minimum resources to run in the CRC instance. +Some workloads might require more resources. +To assign more resources to the CRC instance, see Configuring the instance. + |
+
CRC requires the following minimum version of a supported operating system:
+On Microsoft Windows, CRC requires fully updated Microsoft Windows 10 or Microsoft Windows 11. +CRC does not work on earlier versions of Microsoft Windows.
+CRC does not work on Microsoft Windows Home Edition.
+On macOS, CRC requires macOS 13 Ventura or later. +CRC does not work on earlier versions of macOS.
+On Linux, CRC is supported only on the latest two Red Hat Enterprise Linux/CentOS 8 and 9 minor releases and on the latest two stable Fedora releases.
+When using Red Hat Enterprise Linux, the machine running CRC must be registered with the Red Hat Customer Portal.
+Ubuntu 18.04 LTS or later and Debian 10 or later are not supported and might require manual set up of the host machine.
+See Required software packages to install the required packages for your Linux distribution.
+CRC requires the libvirt and NetworkManager packages to run on Linux.
+Consult the following table to find the command used to install these packages for your Linux distribution:
| Linux Distribution | +Installation command | +
|---|---|
Fedora/Red Hat Enterprise Linux/CentOS |
+
|
+
Debian/Ubuntu |
+
|
+
CRC is available as a portable executable for Red Hat Enterprise Linux. +On Microsoft Windows and macOS, CRC is available using a guided installer.
+Your host machine must meet the minimum system requirements. +For more information, see Minimum system requirements.
+Download the latest release of CRC for your platform.
+On Microsoft Windows, extract the contents of the archive.
+On macOS or Microsoft Windows, run the guided installer and follow the instructions.
+| + + | +
+
+
+On Microsoft Windows, you must install CRC to your local C:\ drive. +You cannot run CRC from a network drive. + |
+
On Red Hat Enterprise Linux, assuming the archive is in the ~/Downloads directory, follow these steps:
+Extract the contents of the archive:
+$ cd ~/Downloads +$ tar xvf crc-linux-amd64.tar.xz+
Create the ~/bin directory if it does not exist and copy the crc executable to it:
$ mkdir -p ~/bin +$ cp ~/Downloads/crc-linux-*-amd64/crc ~/bin+
Add the ~/bin directory to your $PATH:
$ export PATH=$PATH:$HOME/bin +$ echo 'export PATH=$PATH:$HOME/bin' >> ~/.bashrc+
CRC prompts you before use for optional, anonymous usage data collection to assist with development. +No personally identifiable information is collected. +Consent for usage data collection can be granted or revoked by you at any time.
+For more information about collected data, see the Red Hat Telemetry data collection notice.
+To grant or revoke consent for usage data collection, see Configuring usage data collection.
+Consent for usage data collection can be granted or revoked by you at any time using the following configuration commands.
+| + + | +
+
+
+Changes to telemetry consent do not modify a running instance.
+The change will take effect next time you run the |
+
To manually enable telemetry, run the following command:
+$ crc config set consent-telemetry yes+
To manually disable telemetry, run the following command:
+$ crc config set consent-telemetry no+
For more information about the collected data, see the Red Hat Telemetry data collection notice.
+Newer versions of the CRC executable require manual set up to prevent potential incompatibilities with earlier versions.
+Delete the existing CRC instance:
+$ crc delete+
| + + | +
+
+
+The |
+
Replace the earlier crc executable with the executable of the latest release.
+Verify that the new crc executable is in use by checking its version:
$ crc version+
Set up the new CRC release:
+$ crc setup+
Start the new CRC instance:
+$ crc start+
CRC brings a minimal OpenShift Container Platform 4 cluster to your local computer. +This runtime provides minimal environments for development and testing purposes. +CRC is mainly targeted at running on developers' desktops. +For other OpenShift Container Platform use cases, such as headless or multi-developer setups, use the full OpenShift installer.
+See the OpenShift Container Platform documentation for a full introduction to OpenShift Container Platform.
+CRC includes the crc command-line interface (CLI) to interact with the CRC instance using the desired container runtime.
The OpenShift preset for CRC provides a regular OpenShift Container Platform installation with the following notable differences:
+The OpenShift Container Platform cluster is ephemeral and is not intended for production use.
+CRC does not have a supported upgrade path to newer OpenShift Container Platform versions. +Upgrading the OpenShift Container Platform version might cause issues that are difficult to reproduce.
+It uses a single node, which behaves as both a control plane and worker node.
+It disables the Cluster Monitoring Operator by default. +This disabled Operator causes the corresponding part of the web console to be non-functional.
+It disables the following operators:
+Cloud Credential Operator.
+Cluster Autoscaler Operator.
+Cloud Controller Manager Operator.
+The OpenShift Container Platform cluster runs in a virtual machine known as an instance. +This might cause other differences, particularly with external networking.
+The OpenShift Container Platform cluster provided by CRC also includes the following non-customizable cluster settings. +These settings should not be modified:
+The *.crc.testing domain.
+The address range used for internal cluster communication.
+The cluster uses the 172 address range. +This can cause issues when, for example, a proxy is run in the same address space.
+The OpenShift Container Platform cluster managed by CRC uses 2 DNS domain names, crc.testing and apps-crc.testing.
+The crc.testing domain is for core OpenShift Container Platform services.
+The apps-crc.testing domain is for accessing OpenShift applications deployed on the cluster.
For example, the OpenShift Container Platform API server is exposed as api.crc.testing while the OpenShift Container Platform console is accessed as console-openshift-console.apps-crc.testing.
+These DNS domains are served by a dnsmasq DNS container running inside the CRC instance.
The crc setup command detects and adjusts your system DNS configuration so that it can resolve these domains.
+Additional checks are done to verify DNS is properly configured when running crc start.
On Linux, depending on your distribution, CRC expects the following DNS configuration:
+This configuration is used by default on Fedora 33 or newer, and on Ubuntu Desktop editions.
+CRC expects NetworkManager to manage networking.
+CRC configures systemd-resolved to forward requests for the testing domain to the 192.168.130.11 DNS server.
+192.168.130.11 is the IP of the CRC instance.
systemd-resolved configuration is done with a NetworkManager dispatcher script in /etc/NetworkManager/dispatcher.d/99-crc.sh:
#!/bin/sh + +export LC_ALL=C + +systemd-resolve --interface crc --set-dns 192.168.130.11 --set-domain ~testing + +exit 0+
| + + | +
+
+
+
|
+
This configuration is used by default on Fedora 32 or older, on Red Hat Enterprise Linux, and on CentOS.
+CRC expects NetworkManager to manage networking.
+NetworkManager uses dnsmasq with the /etc/NetworkManager/conf.d/crc-nm-dnsmasq.conf configuration file.
The configuration file for this dnsmasq instance is /etc/NetworkManager/dnsmasq.d/crc.conf:
server=/crc.testing/192.168.130.11 +server=/apps-crc.testing/192.168.130.11+
The NetworkManager dnsmasq instance forwards requests for the crc.testing and apps-crc.testing domains to the 192.168.130.11 DNS server.
The OpenShift Container Platform cluster managed by CRC reserves IP subnets for internal use, which should not collide with your host network. +Ensure that the following IP subnets are available for use:
+10.217.0.0/22
10.217.4.0/23
192.168.126.0/24
Additionally, the host hypervisor might reserve another IP subnet depending on the host operating system.
+No additional subnet is reserved on macOS and Microsoft Windows.
+The additional reserved subnet for Linux is 192.168.130.0/24.
You can start CRC behind a defined proxy using environment variables or configurable properties.
+| + + | +
+
+
+SOCKS proxies are not supported by OpenShift Container Platform. + |
+
If you are not using crc oc-env, when interacting with the cluster, export the .testing domain as part of the no_proxy environment variable.
+The embedded oc executable does not require manual settings.
+For more information about using the embedded oc executable, see Accessing the OpenShift cluster with the OpenShift CLI.
Define a proxy using the http_proxy and https_proxy environment variables or using the crc config set command as follows:
$ crc config set http-proxy http://proxy.example.com:<port> +$ crc config set https-proxy http://proxy.example.com:<port> +$ crc config set no-proxy <comma-separated-no-proxy-entries>+
If the proxy uses a custom CA certificate file, set it as follows:
+$ crc config set proxy-ca-file <path-to-custom-ca-file>+
| + + | +
+
+
+Proxy-related values set in the configuration for CRC have priority over values set with environment variables. + |
+
When you run services on your host, you can configure CRC to access these services.
+You have a service which is running on your host and want to consume it with CRC.
+You are using the user mode network. On macOS and Microsoft Windows this is the default behavior.
+Enable accessing services from host to CRC:
+$ crc config set host-network-access true+
Verify that the CRC configuration uses user network mode and enables host network access:
+$ crc config view +[...] +- network-mode : user +- host-network-access : true +[...]+
If CRC instance is already running then restart it (stop ⇒ start), otherwise just start it.
+$ crc stop && crc start+
Assuming your service is running on the host on port 8080, to access
+it from the CRC instance, use host.crc.testing:8080.
Configure a remote server to run an OpenShift Container Platform cluster provided by CRC.
+This procedure assumes the use of a Red Hat Enterprise Linux, Fedora, or CentOS server. +Run every command in this procedure on the remote server.
+| + + | +
+
+
+Perform this procedure only on a local network. +Exposing an insecure server on the internet has many security implications. + |
+
CRC is installed and set up on the remote server. +For more information, see Installing CRC and Setting up CRC.
+CRC is configured to use the OpenShift preset on the remote server. +For more information, see Changing the selected preset.
+Your user account has sudo permissions on the remote server.
Start the cluster:
+$ crc start+
Ensure that the cluster remains running during this procedure.
+Install the haproxy package and other utilities:
$ sudo dnf install haproxy /usr/sbin/semanage+
Modify the firewall to allow communication with the cluster:
+$ sudo systemctl enable --now firewalld +$ sudo firewall-cmd --add-service=http --permanent +$ sudo firewall-cmd --add-service=https --permanent +$ sudo firewall-cmd --add-service=kube-apiserver --permanent +$ sudo firewall-cmd --reload+
For SELinux, allow HAProxy to listen on TCP port 6443 to serve kube-apiserver on this port:
$ sudo semanage port -a -t http_port_t -p tcp 6443+
Create a backup of the default haproxy configuration:
$ sudo cp /etc/haproxy/haproxy.cfg{,.bak}
+Configure haproxy for use with the cluster:
$ export CRC_IP=$(crc ip) +$ sudo tee /etc/haproxy/haproxy.cfg &>/dev/null <<EOF +global + log /dev/log local0 + +defaults + balance roundrobin + log global + maxconn 100 + mode tcp + timeout connect 5s + timeout client 500s + timeout server 500s + +listen apps + bind 0.0.0.0:80 + server crcvm $CRC_IP:80 check + +listen apps_ssl + bind 0.0.0.0:443 + server crcvm $CRC_IP:443 check + +listen api + bind 0.0.0.0:6443 + server crcvm $CRC_IP:6443 check +EOF+
Start the haproxy service:
$ sudo systemctl start haproxy+
Use dnsmasq to connect a client machine to a remote server running an OpenShift Container Platform cluster managed by CRC.
This procedure assumes the use of a Red Hat Enterprise Linux, Fedora, or CentOS client. +Run every command in this procedure on the client.
+| + + | +
+
+
+Connect to a server that is only exposed on your local network. + |
+
A remote server is set up for the client to connect to. +For more information, see Setting up CRC on a remote server.
+You know the external IP address of the server.
+You have the latest OpenShift CLI (oc) in your $PATH on the client.
Install the dnsmasq package:
$ sudo dnf install dnsmasq+
Enable the use of dnsmasq for DNS resolution in NetworkManager:
$ sudo tee /etc/NetworkManager/conf.d/use-dnsmasq.conf &>/dev/null <<EOF +[main] +dns=dnsmasq +EOF+
Add DNS entries for CRC to the dnsmasq configuration:
$ sudo tee /etc/NetworkManager/dnsmasq.d/external-crc.conf &>/dev/null <<EOF +address=/apps-crc.testing/SERVER_IP_ADDRESS +address=/api.crc.testing/SERVER_IP_ADDRESS +EOF+
| + + | +
+
+
+Comment out any existing entries in /etc/NetworkManager/dnsmasq.d/crc.conf. +These entries are created by running a local instance of CRC and will conflict with the entries for the remote cluster. + |
+
Reload the NetworkManager service:
+$ sudo systemctl reload NetworkManager+
Log in to the remote cluster as the developer user with oc:
$ oc login -u developer -p developer https://api.crc.testing:6443+
The remote OpenShift Container Platform web console is available at https://console-openshift-console.apps-crc.testing.
+| + + | +
+
+
+The goal of CRC is to deliver an OpenShift Container Platform environment for development and testing purposes. +Issues occurring during installation or usage of specific OpenShift applications are outside of the scope of CRC. +Report such issues to the relevant project. + |
+
To access the cluster for troubleshooting or debugging purposes, follow this procedure.
+| + + | +
+
+
+Direct access to the OpenShift Container Platform cluster is not needed for regular use and is strongly discouraged. + |
+
Enable OpenShift CLI (oc) access to the cluster and log in as the kubeadmin user.
+For detailed steps, see Accessing the OpenShift cluster with the OpenShift CLI.
Run the oc get nodes command to identify the desired node.
+The output will be similar to this:
$ oc get nodes +NAME STATUS ROLES AGE VERSION +crc-shdl4-master-0 Ready master,worker 7d7h v1.14.6+7e13ab9a7+
Run oc debug nodes/<node> where <node> is the name of the node printed in the previous step.
The system bundle of OpenShift Container Platform in each released crc executable expires 1 year after the release.
+This expiration is due to certificates embedded in the OpenShift Container Platform cluster.
+The crc start command triggers an automatic certificate renewal process when needed.
+Certificate renewal can add up to five minutes to the start time of the cluster.
To avoid this additional startup time, or in case of failures in the certificate renewal process, use the following procedure:
+To resolve expired certificate errors that cannot be automatically renewed:
+Download the latest CRC release and place the crc executable in your $PATH.
Remove the cluster with certificate errors using the crc delete command:
$ crc delete+
| + + | +
+
+
+The |
+
Set up the new release:
+$ crc setup+
Start the new instance:
+$ crc start+
Created CRC instances contain bundle information and instance data.
+Bundle information and instance data is not updated when setting up a new CRC release.
+This information is not updated due to customization in the earlier instance data.
+This will lead to errors when running the crc start command:
$ crc start +... +FATA Bundle 'crc_hyperkit_4.2.8.crcbundle' was requested, but the existing VM is using +'crc_hyperkit_4.2.2.crcbundle'+
Issue the crc delete command before attempting to start the instance:
$ crc delete+
| + + | +
+
+
+The |
+
Resolve most issues by restarting CRC with a clean state.
+This involves stopping the instance, deleting it, reverting changes made by the crc setup command, reapplying those changes, and restarting the instance.
You set up the host machine with the crc setup command.
+For more information, see Setting up CRC.
You started CRC with the crc start command.
+For more information, see Starting the instance.
You are using the latest CRC release. +Using a version earlier than CRC 1.2.0 might result in errors related to expired x509 certificates. +For more information, see Troubleshooting expired certificates.
+To troubleshoot CRC, perform the following steps:
+Stop the CRC instance:
+$ crc stop+
Delete the CRC instance:
+$ crc delete+
| + + | +
+
+
+The |
+
Clean up remaining changes from the crc setup command:
$ crc cleanup+
| + + | +
+
+
+The |
+
Set up your host machine to reapply the changes:
+$ crc setup+
Start the CRC instance:
+$ crc start+
| + + | +
+
+
+The cluster takes a minimum of four minutes to start the necessary containers and Operators before serving a request. + |
+
If your issue is not resolved by this procedure, perform the following steps:
+Search open issues for the issue that you are encountering.
+If no existing issue addresses the encountered issue, create an issue and attach the ~/.crc/crc.log file to the created issue. +The ~/.crc/crc.log file has detailed debugging and troubleshooting information which can help diagnose the problem that you are experiencing.
+CRC presets represent a managed container runtime, and the lower bounds of system resources required by the instance to run it. +CRC offers presets for:
+openshiftOpenShift Container Platform
+okdOKD
+microshiftMicroShift
+On Microsoft Windows and macOS, the CRC guided installer prompts you for your desired preset.
+On Linux, the OpenShift Container Platform preset is selected by default.
+You can change this selection using the crc config command before running the crc setup command.
+Only one preset can be active at a time.
For more information about the minimum system requirements for each preset, see Minimum system requirements.
+For more information on changing the selected preset, see Changing the selected preset.
+The crc setup command performs operations to set up the environment of your host machine for the CRC instance.
The crc setup command creates the ~/.crc directory if it does not already exist.
| + + | +
+
+
+If you are setting up a new version, capture any changes made to the instance before setting up a new CRC release. + |
+
On Linux or macOS, ensure that your user account has permission to use the sudo command.
+On Microsoft Windows, ensure that your user account can elevate to Administrator privileges.
| + + | +
+
+
+Do not run the |
+
Set up your host machine for CRC:
+$ crc setup+
For more information about the available container runtime presets, see About presets.
+The crc start command starts the CRC instance and configured container runtime.
To avoid networking-related issues, ensure that you are not connected to a VPN and that your network connection is reliable.
+You set up the host machine using the crc setup command.
+For more information, see Setting up CRC.
On Microsoft Windows, ensure that your user account can elevate to Administrator privileges.
+For the OpenShift preset, ensure that you have a valid OpenShift user pull secret. +Copy or download the pull secret from the Pull Secret section of the CRC page on the Red Hat Hybrid Cloud Console.
+| + + | +
+
+
+Accessing the user pull secret requires a Red Hat account. + |
+
Start the CRC instance:
+$ crc start+
For the OpenShift preset, supply your user pull secret when prompted.
+| + + | +
+
+
+The cluster takes a minimum of four minutes to start the necessary containers and Operators before serving a request. + |
+
To change the default resources allocated to the instance, see Configuring the instance.
+If you see errors during crc start, see the Troubleshooting CRC section for potential solutions.
Access the OpenShift Container Platform cluster running in the CRC instance by using the OpenShift Container Platform web console or OpenShift CLI (oc).
Access the OpenShift Container Platform web console by using your web browser.
+Access the cluster by using either the kubeadmin or developer user.
+Use the developer user for creating projects or OpenShift applications and for application deployment.
+Use the kubeadmin user only for administrative tasks such as creating new users or setting roles.
CRC is configured to use the OpenShift preset. +For more information, see Changing the selected preset.
+A running CRC instance. +For more information, see Starting the instance.
+To access the OpenShift Container Platform web console with your default web browser, run the following command:
+$ crc console+
Log in as the developer user with the password printed in the output of the crc start command.
+You can also view the password for the developer and kubeadmin users by running the following command:
$ crc console --credentials+
See Troubleshooting CRC if you cannot access the OpenShift Container Platform cluster managed by CRC.
+The OpenShift Container Platform documentation covers the creation of projects and applications.
+Access the OpenShift Container Platform cluster managed by CRC by using the OpenShift CLI (oc).
CRC is configured to use the OpenShift preset. +For more information, see Changing the selected preset.
+A running CRC instance. +For more information, see Starting the instance.
+Run the crc oc-env command to print the command needed to add the cached oc executable to your $PATH:
$ crc oc-env+
Run the printed command.
+Log in as the developer user:
$ oc login -u developer https://api.crc.testing:6443+
| + + | +
+
+
+The |
+
You can now use oc to interact with your OpenShift Container Platform cluster.
+For example, to verify that the OpenShift Container Platform cluster Operators are available, log in as the kubeadmin user and run the following command:
$ oc config use-context crc-admin +$ oc whoami +kubeadmin +$ oc get co+
| + + | +
+
+
+CRC disables the Cluster Monitoring Operator by default. + |
+
See Troubleshooting CRC if you cannot access the OpenShift Container Platform cluster managed by CRC.
+The OpenShift Container Platform documentation covers the creation of projects and applications.
+The OpenShift Container Platform cluster running in the CRC instance includes an internal container image registry by default. +This internal container image registry can be used as a publication target for locally developed container images. +To access the internal OpenShift Container Platform registry, follow these steps.
+CRC is configured to use the OpenShift preset. +For more information, see Changing the selected preset.
+A running CRC instance. +For more information, see Starting the instance.
+A working OpenShift CLI (oc) command.
+For more information, see Accessing the OpenShift cluster with the OpenShift CLI.
Check which user is logged in to the cluster:
+$ oc whoami+
| + + | +
+
+
+For demonstration purposes, the current user is assumed to be |
+
Log in to the registry as that user with its token:
+$ oc registry login --insecure=true+
Create a new project:
+$ oc new-project demo+
Mirror an example container image:
+$ oc image mirror registry.access.redhat.com/ubi8/ubi:latest=default-route-openshift-image-registry.apps-crc.testing/demo/ubi8:latest --insecure=true --filter-by-os=linux/amd64+
Get imagestreams and verify that the pushed image is listed:
+$ oc get is+
Enable image lookup in the imagestream:
+$ oc set image-lookup ubi8+
This setting allows the imagestream to be the source of images without having to provide the full URL to the internal registry.
+Create a pod using the recently pushed image:
+$ oc run demo --image=ubi8 --command -- sleep 600s+
odoYou can use odo to create OpenShift projects and applications from the command line.
+This procedure deploys a sample application to the OpenShift Container Platform cluster running in the CRC instance.
You have installed odo.
+For more information, see Installing odo in the odo documentation.
CRC is configured to use the OpenShift preset. +For more information, see Changing the selected preset.
+The CRC instance is running. +For more information, see Starting the instance.
+Log in to the running OpenShift Container Platform cluster managed by CRC as the developer user:
$ odo login -u developer -p developer+
Create a project for your application:
+$ odo project create sample-app+
Create a directory for your components:
+$ mkdir sample-app +$ cd sample-app+
Clone an example Node.js application:
+$ git clone https://github.com/openshift/nodejs-ex +$ cd nodejs-ex+
Add a nodejs component to the application:
$ odo create nodejs+
Create a URL and add an entry to the local configuration file:
+$ odo url create --port 8080+
Push the changes:
+$ odo push+
Your component is now deployed to the cluster with an accessible URL.
+List the URLs and check the desired URL for the component:
+$ odo url list+
View the deployed application using the generated URL.
+For more information about using odo, see the odo documentation.
The crc stop command stops the running CRC instance and container runtime.
+The stopping process takes a few minutes while the cluster shuts down.
Stop the CRC instance and container runtime:
+$ crc stop+
The crc delete command deletes an existing CRC instance.
Delete the CRC instance:
+$ crc delete+
| + + | +
+
+
+The |
+
The page you requested has been relocated to https://crc.dev/docs/getting_started/getting_started/introducing/.
diff --git a/index.html b/index.html new file mode 100644 index 0000000..78113a7 --- /dev/null +++ b/index.html @@ -0,0 +1,9 @@ + + + + + + +The page you requested has been relocated to https://crc.dev/docs/getting_started/getting_started/introducing/.
diff --git a/robots.txt b/robots.txt new file mode 100644 index 0000000..c2a49f4 --- /dev/null +++ b/robots.txt @@ -0,0 +1,2 @@ +User-agent: * +Allow: / diff --git a/search-index.js b/search-index.js new file mode 100644 index 0000000..e074943 --- /dev/null +++ b/search-index.js @@ -0,0 +1 @@ +antoraSearch.initSearch(lunr, 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disables cluster monitoring by default to ensure that CRC can run on a typical notebook. Monitoring is responsible for listing your cluster in the Red Hat Hybrid Cloud Console. Follow this procedure to enable monitoring for your cluster. Prerequisites You must assign additional memory to the CRC instance. At least 14 GiB of memory, a value of 14336, is recommended for core functionality. Increased workloads will require more memory. For more information, see Configuring the instance. Procedure Set the enable-cluster-monitoring configurable property to true: $ crc config set enable-cluster-monitoring true Start the instance: $ crc start Cluster monitoring cannot be disabled. To remove monitoring, set the enable-cluster-monitoring configurable property to false and delete the existing CRC instance. To verify CRC can run on a typical notebook, some resource-heavy services get disabled by default. These services can be enabled by manually removing the desired Operator from the Operator override list. Prerequisites A running CRC virtual machine and a working oc command. For more information, see Accessing the OpenShift cluster with oc. You must log in through oc as the kubeadmin user. Procedure List unmanaged Operators and note the numeric index for the desired Operator: On Linux or macOS: $ oc get clusterversion version -ojsonpath='{range .spec.overrides[*]}{.name}{\"\\n\"}{end}' | nl -v 0 On Microsoft Windows using PowerShell: PS> oc get clusterversion version -ojsonpath='{range .spec.overrides[*]}{.name}{\"\\n\"}{end}' | % {$nl++;\"`t$($nl-1) `t $_\"};$nl=0 Start the desired Operator using the identified numeric index: $ oc patch clusterversion/version --type='json' -p '[{\"op\":\"remove\", \"path\":\"/spec/overrides/\"}]' clusterversion.config.openshift.io/version patched","title":"Administrative tasks","component":"getting_started","version":"","name":"administrative-tasks","url":"/getting_started/getting_started/administrative-tasks/","titles":[{"text":"Starting monitoring","hash":"_starting_monitoring","id":1},{"text":"Enabling override Operators","hash":"_enabling_override_operators","id":2}]},"2":{"id":2,"text":"Use the crc config command to configure both the crc executable and the CRC instance. The crc config command requires a subcommand to act on the configuration. The available subcommands are get, set, unset, and view. The get, set, and unset subcommands operate on named configurable properties. Run the crc config --help command to list the available properties. You can also use the crc config command to configure the behavior of the startup checks for the crc start and crc setup commands. By default, startup checks report an error and stop execution when their conditions are not met. Set the value of a property starting with skip-check to true to skip the check. The CRC executable provides commands to view configurable properties and the current CRC configuration. Procedure To view the available configurable properties: $ crc config --help To view the values for a configurable property: $ crc config get To view the complete current configuration: $ crc config view The crc config view command does not return any information if the configuration consists of default values. You can change the container runtime used for the CRC instance by selecting the desired preset. You can change the selected preset using the command line interface. You cannot change the preset of an existing CRC instance. Preset changes are only applied when a CRC instance is created. To enable preset changes, you must delete the existing instance and start a new one. Procedure Change the selected preset from the command line: $ crc config set preset Valid preset names are: Table 1. Preset names Name Preset openshift OpenShift Container Platform okd OKD microshift MicroShift Additional resources For more information about the minimum system requirements for each preset, see Minimum system requirements. Use the cpus and memory properties to configure the default number of vCPUs and amount of memory available to the CRC instance, respectively. Alternatively, the number of vCPUs and amount of memory can be assigned using the --cpus and --memory flags to the crc start command, respectively. You cannot change the configuration of a running CRC instance. To enable configuration changes, you must stop the running instance and start it again. Procedure To configure the number of vCPUs available to the instance: $ crc config set cpus The default value for the cpus property is 4. The number of vCPUs to assign must be greater than or equal to the default. To start the instance with the desired number of vCPUs: $ crc start --cpus To configure the memory available to the instance: $ crc config set memory Values for available memory are set in mebibytes (MiB). One gibibyte (GiB) of memory is equal to 1024 MiB. The default value for the memory property is 10752. The amount of memory to assign must be greater than or equal to the default. To start the instance with the desired amount of memory: $ crc start --memory","title":"Configuring CRC","component":"getting_started","version":"","name":"configuring","url":"/getting_started/getting_started/configuring/","titles":[{"text":"About CRC configuration","hash":"_about_crc_configuration","id":1},{"text":"Viewing CRC configuration","hash":"_viewing_crc_configuration","id":2},{"text":"Changing the selected preset","hash":"_changing_the_selected_preset","id":3},{"text":"Configuring the instance","hash":"_configuring_the_instance","id":4}]},"3":{"id":3,"text":"CRC has the following minimum hardware and operating system requirements. CRC is supported on these architectures: Table 1. Preset and architecture compatibility Preset AMD64 Intel 64 Apple silicon OpenShift Container Platform yes yes yes OKD yes yes no MicroShift yes yes yes CRC does not support nested virtualization. Depending on the desired container runtime, CRC requires the following system resources: 4 physical CPU cores 10.5 GB of free memory 35 GB of storage space 2 physical CPU cores 4 GB of free memory 35 GB of storage space The OpenShift Container Platform and MicroShift presets require these minimum resources to run in the CRC instance. Some workloads might require more resources. To assign more resources to the CRC instance, see Configuring the instance. CRC requires the following minimum version of a supported operating system: On Microsoft Windows, CRC requires fully updated Microsoft Windows 10 or Microsoft Windows 11. CRC does not work on earlier versions of Microsoft Windows. CRC does not work on Microsoft Windows Home Edition. On macOS, CRC requires macOS 13 Ventura or later. CRC does not work on earlier versions of macOS. On Linux, CRC is supported only on the latest two Red Hat Enterprise Linux/CentOS 8 and 9 minor releases and on the latest two stable Fedora releases. When using Red Hat Enterprise Linux, the machine running CRC must be registered with the Red Hat Customer Portal. Ubuntu 18.04 LTS or later and Debian 10 or later are not supported and might require manual set up of the host machine. See Required software packages to install the required packages for your Linux distribution. CRC requires the libvirt and NetworkManager packages to run on Linux. Consult the following table to find the command used to install these packages for your Linux distribution: Table 2. Package installation commands by distribution Linux Distribution Installation command Fedora/Red Hat Enterprise Linux/CentOS sudo dnf install NetworkManager Debian/Ubuntu sudo apt install qemu-kvm libvirt-daemon libvirt-daemon-system network-manager CRC is available as a portable executable for Red Hat Enterprise Linux. On Microsoft Windows and macOS, CRC is available using a guided installer. Prerequisites Your host machine must meet the minimum system requirements. For more information, see Minimum system requirements. Procedure Download the latest release of CRC for your platform. On Microsoft Windows, extract the contents of the archive. On macOS or Microsoft Windows, run the guided installer and follow the instructions. On Microsoft Windows, you must install CRC to your local C:\\ drive. You cannot run CRC from a network drive. On Red Hat Enterprise Linux, assuming the archive is in the ~/Downloads directory, follow these steps: Extract the contents of the archive: $ cd ~/Downloads $ tar xvf crc-linux-amd64.tar.xz Create the ~/bin directory if it does not exist and copy the crc executable to it: $ mkdir -p ~/bin $ cp ~/Downloads/crc-linux-*-amd64/crc ~/bin Add the ~/bin directory to your $PATH: $ export PATH=$PATH:$HOME/bin $ echo 'export PATH=$PATH:$HOME/bin' >> ~/.bashrc CRC prompts you before use for optional, anonymous usage data collection to assist with development. No personally identifiable information is collected. Consent for usage data collection can be granted or revoked by you at any time. Additional resources For more information about collected data, see the Red Hat Telemetry data collection notice. To grant or revoke consent for usage data collection, see Configuring usage data collection. Consent for usage data collection can be granted or revoked by you at any time using the following configuration commands. Changes to telemetry consent do not modify a running instance. The change will take effect next time you run the crc start command. Procedure To manually enable telemetry, run the following command: $ crc config set consent-telemetry yes To manually disable telemetry, run the following command: $ crc config set consent-telemetry no Additional resources For more information about the collected data, see the Red Hat Telemetry data collection notice. Newer versions of the CRC executable require manual set up to prevent potential incompatibilities with earlier versions. Procedure Download the latest release of CRC. Delete the existing CRC instance: $ crc delete The crc delete command results in the loss of data stored in the CRC instance. Save any desired information stored in the instance before running this command. Replace the earlier crc executable with the executable of the latest release. Verify that the new crc executable is in use by checking its version: $ crc version Set up the new CRC release: $ crc setup Start the new CRC instance: $ crc start","title":"Installing CRC","component":"getting_started","version":"","name":"installing","url":"/getting_started/getting_started/installing/","titles":[{"text":"Minimum system requirements","hash":"_minimum_system_requirements","id":1},{"text":"Hardware requirements","hash":"_hardware_requirements","id":2},{"text":"For OpenShift Container Platform","hash":"_for_openshift_container_platform","id":3},{"text":"For MicroShift","hash":"_for_microshift","id":4},{"text":"Operating system requirements","hash":"_operating_system_requirements","id":5},{"text":"Requirements on Microsoft Windows","hash":"_requirements_on_microsoft_windows","id":6},{"text":"Requirements on macOS","hash":"_requirements_on_macos","id":7},{"text":"Requirements on Linux","hash":"_requirements_on_linux","id":8},{"text":"Required software packages for Linux","hash":"_required_software_packages_for_linux","id":9},{"text":"Installing CRC","hash":"_installing_crc","id":10},{"text":"About usage data collection","hash":"_about_usage_data_collection","id":11},{"text":"Configuring usage data collection","hash":"_configuring_usage_data_collection","id":12},{"text":"Upgrading CRC","hash":"_upgrading_crc","id":13}]},"4":{"id":4,"text":"CRC brings a minimal OpenShift Container Platform 4 cluster to your local computer. This runtime provides minimal environments for development and testing purposes. CRC is mainly targeted at running on developers' desktops. For other OpenShift Container Platform use cases, such as headless or multi-developer setups, use the full OpenShift installer. See the OpenShift Container Platform documentation for a full introduction to OpenShift Container Platform. CRC includes the crc command-line interface (CLI) to interact with the CRC instance using the desired container runtime. The OpenShift preset for CRC provides a regular OpenShift Container Platform installation with the following notable differences: The OpenShift Container Platform cluster is ephemeral and is not intended for production use. CRC does not have a supported upgrade path to newer OpenShift Container Platform versions. Upgrading the OpenShift Container Platform version might cause issues that are difficult to reproduce. It uses a single node, which behaves as both a control plane and worker node. It disables the Cluster Monitoring Operator by default. This disabled Operator causes the corresponding part of the web console to be non-functional. It disables the following operators: Cloud Credential Operator. Cluster Autoscaler Operator. Cloud Controller Manager Operator. The OpenShift Container Platform cluster runs in a virtual machine known as an instance. This might cause other differences, particularly with external networking. The OpenShift Container Platform cluster provided by CRC also includes the following non-customizable cluster settings. These settings should not be modified: The *.crc.testing domain. The address range used for internal cluster communication. The cluster uses the 172 address range. This can cause issues when, for example, a proxy is run in the same address space.","title":"Introducing CRC","component":"getting_started","version":"","name":"introducing","url":"/getting_started/getting_started/introducing/","titles":[{"text":"About CRC","hash":"_about_crc","id":1},{"text":"Differences from a production OpenShift Container Platform installation","hash":"_differences_from_a_production_openshift_container_platform_installation","id":2}]},"5":{"id":5,"text":"The OpenShift Container Platform cluster managed by CRC uses 2 DNS domain names, crc.testing and apps-crc.testing. The crc.testing domain is for core OpenShift Container Platform services. The apps-crc.testing domain is for accessing OpenShift applications deployed on the cluster. For example, the OpenShift Container Platform API server is exposed as api.crc.testing while the OpenShift Container Platform console is accessed as console-openshift-console.apps-crc.testing. These DNS domains are served by a dnsmasq DNS container running inside the CRC instance. The crc setup command detects and adjusts your system DNS configuration so that it can resolve these domains. Additional checks are done to verify DNS is properly configured when running crc start. On Linux, depending on your distribution, CRC expects the following DNS configuration: This configuration is used by default on Fedora 33 or newer, and on Ubuntu Desktop editions. CRC expects NetworkManager to manage networking. CRC configures systemd-resolved to forward requests for the testing domain to the 192.168.130.11 DNS server. 192.168.130.11 is the IP of the CRC instance. systemd-resolved configuration is done with a NetworkManager dispatcher script in /etc/NetworkManager/dispatcher.d/99-crc.sh: #!/bin/sh export LC_ALL=C systemd-resolve --interface crc --set-dns 192.168.130.11 --set-domain ~testing exit 0 systemd-resolved is also available as an unsupported Technology Preview on Red Hat Enterprise Linux and CentOS 8.3. After configuring the host to use systemd-resolved, stop any running clusters and rerun crc setup. This configuration is used by default on Fedora 32 or older, on Red Hat Enterprise Linux, and on CentOS. CRC expects NetworkManager to manage networking. NetworkManager uses dnsmasq with the /etc/NetworkManager/conf.d/crc-nm-dnsmasq.conf configuration file. The configuration file for this dnsmasq instance is /etc/NetworkManager/dnsmasq.d/crc.conf: server=/crc.testing/192.168.130.11 server=/apps-crc.testing/192.168.130.11 The NetworkManager dnsmasq instance forwards requests for the crc.testing and apps-crc.testing domains to the 192.168.130.11 DNS server. The OpenShift Container Platform cluster managed by CRC reserves IP subnets for internal use, which should not collide with your host network. Ensure that the following IP subnets are available for use: Reserved IP subnets 10.217.0.0/22 10.217.4.0/23 192.168.126.0/24 Additionally, the host hypervisor might reserve another IP subnet depending on the host operating system. No additional subnet is reserved on macOS and Microsoft Windows. The additional reserved subnet for Linux is 192.168.130.0/24. You can start CRC behind a defined proxy using environment variables or configurable properties. SOCKS proxies are not supported by OpenShift Container Platform. Prerequisites If you are not using crc oc-env, when interacting with the cluster, export the .testing domain as part of the no_proxy environment variable. The embedded oc executable does not require manual settings. For more information about using the embedded oc executable, see Accessing the OpenShift cluster with the OpenShift CLI. Procedure Define a proxy using the http_proxy and https_proxy environment variables or using the crc config set command as follows: $ crc config set http-proxy http://proxy.example.com: $ crc config set https-proxy http://proxy.example.com: $ crc config set no-proxy If the proxy uses a custom CA certificate file, set it as follows: $ crc config set proxy-ca-file Proxy-related values set in the configuration for CRC have priority over values set with environment variables. When you run services on your host, you can configure CRC to access these services. Prerequisites You have a service which is running on your host and want to consume it with CRC. You are using the user mode network. On macOS and Microsoft Windows this is the default behavior. Procedure Enable accessing services from host to CRC: $ crc config set host-network-access true Verify that the CRC configuration uses user network mode and enables host network access: $ crc config view [...] - network-mode : user - host-network-access : true [...] If CRC instance is already running then restart it (stop ⇒ start), otherwise just start it. $ crc stop && crc start Verification Assuming your service is running on the host on port 8080, to access it from the CRC instance, use host.crc.testing:8080. Configure a remote server to run an OpenShift Container Platform cluster provided by CRC. This procedure assumes the use of a Red Hat Enterprise Linux, Fedora, or CentOS server. Run every command in this procedure on the remote server. Perform this procedure only on a local network. Exposing an insecure server on the internet has many security implications. Prerequisites CRC is installed and set up on the remote server. For more information, see Installing CRC and Setting up CRC. CRC is configured to use the OpenShift preset on the remote server. For more information, see Changing the selected preset. Your user account has sudo permissions on the remote server. Procedure Start the cluster: $ crc start Ensure that the cluster remains running during this procedure. Install the haproxy package and other utilities: $ sudo dnf install haproxy /usr/sbin/semanage Modify the firewall to allow communication with the cluster: $ sudo systemctl enable --now firewalld $ sudo firewall-cmd --add-service=http --permanent $ sudo firewall-cmd --add-service=https --permanent $ sudo firewall-cmd --add-service=kube-apiserver --permanent $ sudo firewall-cmd --reload For SELinux, allow HAProxy to listen on TCP port 6443 to serve kube-apiserver on this port: $ sudo semanage port -a -t http_port_t -p tcp 6443 Create a backup of the default haproxy configuration: $ sudo cp /etc/haproxy/haproxy.cfg{,.bak} Configure haproxy for use with the cluster: $ export CRC_IP=$(crc ip) $ sudo tee /etc/haproxy/haproxy.cfg &>/dev/null /dev/null /dev/null <