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Merge pull request #25 from IBM/issue13
Use Kubernetes API Instead of Calling Kubectl Through the Subproccess Module
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,91 +1,90 @@ | ||
| import requests | ||
| import os | ||
| import subprocess | ||
| import json | ||
| from src.common.functions import Color as Color | ||
|
|
||
| class IngressCreator: | ||
| def __init__(self, clusterNameOrID, resourceGroupID, namespace, secretName, serviceName, servicePort, accessToken, refreshToken, ingressSubdomain ): | ||
| def __init__(self, clusterNameOrID, resourceGroupID, namespace, secretName, serviceName, servicePort, accessToken, refreshToken, ingressSubdomain, iks_master_url): | ||
| self.clusterNameOrID=clusterNameOrID | ||
| self.resourceGroupID=resourceGroupID | ||
| self.namespace=namespace | ||
| self.secretName=secretName | ||
| self.serviceName=serviceName | ||
| self.servicePort=servicePort | ||
| self.accessToken= accessToken | ||
| self.accessToken=accessToken | ||
| self.refreshToken=refreshToken | ||
| self.ingressSubdomain=ingressSubdomain | ||
|
|
||
| def getKubeConfig(self): | ||
|
|
||
| url = "https://containers.cloud.ibm.com/global/v2/getKubeconfig?cluster="+self.clusterNameOrID | ||
|
|
||
| payload = "" | ||
| headers = { | ||
| 'X-Auth-Resource-Group': self.resourceGroupID, | ||
| 'X-Auth-Refresh-Token': self.refreshToken, | ||
| 'Authorization': self.accessToken, | ||
| 'accept': 'application/json' | ||
| } | ||
| try: | ||
| response = requests.request("GET", url, headers=headers, data=payload) | ||
| text_file = open("config.txt", "w") | ||
| n = text_file.write(response.text) | ||
| text_file.close() | ||
| os.environ['KUBECONFIG'] = "config.txt" | ||
| print(Color.GREEN+"SUCCESS: Installed kube config file"+Color.END) | ||
|
|
||
| except: | ||
| print(Color.RED+"ERROR: Unable to Install kube config file"+Color.END) | ||
| self.iks_master_url=iks_master_url | ||
|
|
||
| def create_ingress(self): | ||
| if self.iks_master_url =="": | ||
| print(Color.RED+"ERROR: Public service endpoint for IKS Cluster is not enabled"+Color.END) | ||
| #1. get id token to make kubernetes API calls | ||
| url = "https://iam.cloud.ibm.com/identity/token" | ||
|
|
||
| #1. setting config | ||
| self.getKubeConfig() | ||
| payload="grant_type=urn%3Aibm%3Aparams%3Aoauth%3Agrant-type%3Aapikey&apikey="+os.getenv("CIS_SERVICES_APIKEY") | ||
| headers = { | ||
| 'content-type': 'application/x-www-form-urlencoded', | ||
| 'Authorization': 'Basic a3ViZTprdWJl', | ||
| 'cache-control': 'no-cache' | ||
| } | ||
| try: | ||
| response = requests.request("POST", url, headers=headers, data=payload) | ||
| data=json.loads(response.text) | ||
| idToken=data["id_token"] | ||
| except: | ||
| print(Color.RED+"ERROR: Unable to get id token"+Color.END) | ||
|
|
||
| #2. getting ingressSubdomain | ||
| ingressFileName="ingress.yaml" | ||
|
|
||
|
|
||
|
|
||
| #2. apply yaml file through kubernetes API | ||
| url = self.iks_master_url+"/apis/networking.k8s.io/v1beta1/namespaces/"+self.namespace+"/ingresses" | ||
| payload = json.dumps({ | ||
| "apiVersion": "networking.k8s.io/v1beta1", | ||
| "kind": "Ingress", | ||
| "metadata": { | ||
| "name": "cis-cert", | ||
| "annotations": { | ||
| "nginx.ingress.kubernetes.io/ssl-redirect": "false" | ||
| } | ||
| }, | ||
| "spec": { | ||
| "tls": [ | ||
| { | ||
| "hosts": [ | ||
| self.ingressSubdomain | ||
| ], | ||
| "secretName": self.secretName | ||
| } | ||
| ], | ||
| "rules": [ | ||
| { | ||
| "host": self.ingressSubdomain, | ||
| "http": { | ||
| "paths": [ | ||
| { | ||
| "path": "/", | ||
| "backend": { | ||
| "serviceName": self.serviceName, | ||
| "servicePort": int(self.servicePort) | ||
| } | ||
| } | ||
| ] | ||
| } | ||
| } | ||
| ] | ||
| } | ||
| }) | ||
| headers = { | ||
| 'Authorization': 'bearer'+' '+idToken, | ||
| 'Content-Type': 'application/json' | ||
| } | ||
| try: | ||
| response = requests.request("POST", url, headers=headers, data=payload, verify=False) | ||
| print(Color.GREEN+"SUCCESS: Created ingress file"+Color.END) | ||
|
|
||
| yaml='''apiVersion: networking.k8s.io/v1beta1 | ||
| kind: Ingress | ||
| metadata: | ||
| name: cis-ingress | ||
| annotations: | ||
| nginx.ingress.kubernetes.io/ssl-redirect: "false" | ||
| spec: | ||
| tls: | ||
| - hosts: | ||
| - '''+self.ingressSubdomain+''' | ||
| secretName: '''+self.secretName+''' | ||
| rules: | ||
| - host: '''+self.ingressSubdomain+''' | ||
| http: | ||
| paths: | ||
| - path: / | ||
| backend: | ||
| serviceName: '''+self.serviceName+''' | ||
| servicePort: '''+self.servicePort | ||
| except: | ||
| print(Color.RED+"ERROR: Unable to create ingress file"+Color.END) | ||
|
|
||
| #3. create yaml file | ||
| text_file = open(ingressFileName, "w") | ||
| n = text_file.write(yaml) | ||
| text_file.close() | ||
|
|
||
| #4. kubectl sanity check | ||
| try: | ||
| subprocess.check_output(["kubectl", "--help"], stderr=subprocess.STDOUT) | ||
| except: | ||
| print(Color.RED+"ERROR: Kubectl is not installed"+Color.END) | ||
|
|
||
| #5. apply yaml | ||
| try: | ||
|
|
||
| subprocess.check_output(["kubectl", "apply", "-f", ingressFileName, "--namespace="+self.namespace], stderr=subprocess.STDOUT) | ||
| print(Color.GREEN+"SUCCESS: Ingress was created"+Color.END) | ||
|
|
||
| except subprocess.CalledProcessError as e: | ||
| print(Color.RED+"ERROR: Ingress was not created"+Color.END) | ||
| #6 delete ingress yaml and kube config file | ||
| os.remove(ingressFileName) | ||
| os.remove("config.txt") | ||
| #future enchancements: use kubectl api |
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