When I deploy https://projectcontour.io/ ingress controller on my Digital Ocean K8S cluster, a load balancer gets created automatically.
I consider to use Ansible as management tool for K8S to automate the deployment.
After the following tasks:
- name: retrieve file
get_url:
url: https://projectcontour.io/quickstart/contour.yaml
dest: /testing/contour.yaml
register: download_contour
- name: create deployment
k8s:
src: /testing/deployment.yml
when: download_contour.changed
I would like to wait until the contour gets EXTERNAL-IP address assigned, then continue with other tasks. Here is an example on my local computer:
kubectl get -n projectcontour service envoy -o wide
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR
envoy LoadBalancer 10.96.226.84 172.18.255.200 80:31092/TCP,443:30362/TCP 2d15h app=envoy
How to wait until the envoy LoadBalancer gets the EXTERNAL-IP address assigned in Ansible?
I haven't tested it, but I think you could try to do something like this:
- shell: if [[ $(kubectl get services envoy -n projectcontour --output jsonpath='{.status.loadBalancer.ingress[0]}') ]]; then exit 0; else exit 1; fi;
register: wait_for_ext_ip
until: wait_for_ext_ip.rc == 0
retries: 10
delay: 5
You should use the until loops:
tasks:
- name: run kubectl to retreive external IP - Wait for task to complete
shell: "kubectl get -n projectcontour service envoy -o wide | awk '{ print $4}' | grep -v EXT"
register: k_ext_ip
until: k_ext_ip.stdout.find("1.2.3.4") != -1
retries: 6
delay: 10
For the shell command, I simply used some basic linux commands. It's better to replace those with Kubectl aligned commands to view only the EXTERNAL-IP.