Openshift/K8S : Get routes hostnames and learn their reachability

You may want to learn your whole Kubernetes or Openshift routes and their hostnames. Also you want to learn reachability of them. Here comes a shortcut!

First step is creating a variable :

hosts=$(oc get route -A \ -o jsonpath='{.items[*].spec.host}')

You can ensure that just getting the hostnames, rather than any other info by running :

After this point we need a series of shell command to get names and HTTP status of our routes. For this task, write out the codes shown below :

for host in $hosts ; do \ curl https://$host -k -w "%{url_effective} %{http_code}\n" -o /dev/null -s ; \ done https://oauth-openshift.apps.ocp4.ozgurkkisa.com/ 403 https://console-openshift-console.apps.ocp4.ozgurkkisa.com/ 200
https://downloads-openshift-console.apps.ocp4.ozgurkkisa.com/ 200
https://alertmanager-main-openshift-monitoring.apps.ocp4.ozgurkkisa.com/ 403
https://grafana-openshift-monitoring.apps.ocp4.ozgurkkisa.com/ 403
https://prometheus-k8s-openshift-monitoring.apps.ocp4.ozgurkkisa.com/ 403
https://thanos-querier-openshift-monitoring.apps.ocp4.ozgurkkisa.com/ 403

As you see above, you are viewing the hostnames, url’s and HTTP service status of all routes.

Alternatively you can save this code as a shell script file (.sh) and run whenever you want.

Hope this helps! Have a nice day :)

Originally published at https://ozgurkkisa.blogspot.com on April 3, 2022.