Add post about using bundle option

content/posts/2024-03-22-use-bundle-option.md

@@ -0,0 +1,41 @@
+---
+title: "How to use bundle option"
+date: 2024-03-22T12:39:10+05:30
+---
+
+CRC provides a config option called `bundle` to configure the _location_ of the bundle. This option is useful when you
+want to use a bundle that is not the default one or user want to try a bundle which is not part of release but available
+at the OpenShift mirror location. The `bundle` option can accept local filesystem paths, container registry URLs, and
+http/https URLs. This blog post will guide you through the process of using the `bundle` option using config or
+setup/start commands.
+
+## Using `bundle` option with `crc config` command
+
+You can use the `crc config set bundle` command to set the bundle location. This command can accept local filesystem paths,
+container registry URLs, and http/https URLs. Here are some examples:
+
+```bash
+# Assume user want to use microshift-4.15.0 bundle which is not part of crc release but available at the OpenShift mirror location
+crc config set bundle https://developers.redhat.com/content-gateway/file/pub/openshift-v4/clients/crc/bundles/microshift/4.15.0/crc_microshift_libvirt_4.15.0_amd64.crcbundle
+crc setup
+crc start
+```
+
+## Using `bundle` option with `crc setup` and `crc start` commands
+```bash
+crc setup --bundle https://developers.redhat.com/content-gateway/file/pub/openshift-v4/clients/crc/bundles/microshift/4.15.0/crc_microshift_libvirt_4.15.0_amd64.crcbundle
+crc start --bundle https://developers.redhat.com/content-gateway/file/pub/openshift-v4/clients/crc/bundles/microshift/4.15.0/crc_microshift_libvirt_4.15.0_amd64.crcbundle
+```
+
+**Beware**, if you use -b https:// there will be no signature checks
+Bundles downloaded from mirror.openshift.com can be verified this way:
+```bash
+curl -L -O https://developers.redhat.com/content-gateway/file/pub/openshift-v4/clients/crc/bundles/microshift/4.15.0/crc_microshift_libvirt_4.15.0_amd64.crcbundle
+curl -L -O https://developers.redhat.com/content-gateway/file/pub/openshift-v4/clients/crc/bundles/microshift/4.15.0/crc_microshift_libvirt_4.15.0_amd64.crcbundle.sha256
+sha256sum crc_microshift_libvirt_4.15.0_amd64.crcbundle => should match with the content of crc_microshift_libvirt_4.15.0_amd64.crcbundle.sha256
+```
+
+## Conclusion
+This blog post has shown you how to use the `bundle` option with CRC. By following these steps, you can quickly and easily
+spin up a local cluster using the bundle of your choice.
+As usual, we'd like to get your [feedback](https://github.com/crc-org/crc/issues/new/choose) on all this work!