def rollback(deployment_description, rollback_to=0):
'''
Undo upgrade by rolling back to a previous revision of the deployment.
By default, go back one revision.
rollback_to can be used to supply a specific revision number.
Returns the image for the app container and the replica count from the rolled-back deployment
'''
'''
2018-07-13
Currently this does not work due to a bug in the create_namespaced_deployment_rollback() method.
The k8s python client code throws an exception while processing the response from the API.
See:
- https://github.com/kubernetes-client/python/issues/491
- https://github.com/kubernetes/kubernetes/pull/63837
The fix has been merged into the master branch but is not in the latest release.
'''
_configure_api(deployment_description["location"])
deployment = deployment_description["deployment"]
namespace = deployment_description["namespace"]
# Initiate the rollback
client.ExtensionsV1beta1Api().create_namespaced_deployment_rollback(
deployment, namespace,
client.AppsV1beta1DeploymentRollback(
name=deployment,
rollback_to=client.AppsV1beta1RollbackConfig(
revision=rollback_to)))
# Read back the spec for the rolled-back deployment
spec = client.ExtensionsV1beta1Api().read_namespaced_deployment(
deployment, namespace)
return spec.spec.template.spec.containers[0].image, spec.spec.replicas
def rollbackDeploymentPolicy(obj, api):
#check if alert has been duplicated
if getLabels(obj, api) == "v1":
print("Duplicate alert")
return
api_instance = client.AppsV1beta1Api(api)
#Parse name string and assign required values
n = getName(obj)
namespace = n[2]
deployment = n[4]
#Parse deployment name to remove suffix
n = deployment.split("-")
deployment = n[0]+"-"+n[1]+"-"+n[2]
body = client.AppsV1beta1DeploymentRollback(None,None,deployment, client.AppsV1beta1RollbackConfig())
print("Target: ", deployment)
resp = api_instance.create_namespaced_deployment_rollback(deployment, namespace, body)
print(resp)
def _get_rollback_config(self, rollback_to=None):
if rollback_to:
return client.AppsV1beta1RollbackConfig(rollback_to)
def post(self):
arg = self.request.arguments
print(arg)
#获取namespace,keyword,回滚版本字段不为空的deploy和version
namespace = arg['namespace'][0].decode('utf-8')
keyword = arg['keyword'][0].decode('utf-8')
v2 = client.AppsV1Api()
v3 = client.AppsV1beta1Api()
rollback_dict = {}
for deploy in arg:
if deploy != 'namespace' and deploy != 'keyword':
version = arg[deploy][0].decode('utf-8')
if version.strip():
rollback_dict[deploy]=version
#如果rollback_dict不为空，则区分上一个版本和具体版本分别执行更新
if rollback_dict:
for deploy_name in rollback_dict:
if rollback_dict[deploy_name] == '上一个版本':
# v3 = client.AppsV1beta1Api()
rollback = client.AppsV1beta1DeploymentRollback(name=deploy_name,rollback_to=client.AppsV1beta1RollbackConfig(revision=0))
v3.create_namespaced_deployment_rollback(name=deploy_name, namespace=namespace, body=rollback)
else:
# v2 = client.AppsV1Api()
api_response = v2.read_namespaced_deployment(name=deploy_name, namespace=namespace)
image = api_response.spec.template.spec.containers[0].image
# print(image[:-12]+rollback_dict[deploy_name])
image_roll = image[:-12]+rollback_dict[deploy_name]
api_response.spec.template.spec.containers[0].image = image_roll
v2.patch_namespaced_deployment(name=deploy_name, namespace=namespace, body=api_response)
else:
print('no deploy need rollback')
#返回更新后的deploy信息
data = {'status': True, 'error': "", 'message': '','data': ''}
deploy_list=[]
#根据namespace和keyword获取对应的deploy，如keyword为空，则获取当前namespace下的所有deploy，
# v2 = client.AppsV1Api()
api_response = v2.list_namespaced_deployment(namespace)
for deploy in api_response.items:
if keyword in deploy.metadata.name:
deploy_dict = {}
deploy_dict['deploy'] = deploy.metadata.name
deploy_dict['image'] = deploy.spec.template.spec.containers[0].image
deploy_dict['replicas'] = deploy.status.replicas
deploy_dict['available'] = deploy.status.available_replicas
if not deploy_dict['available']:
deploy_dict['available'] = 0
#根据deploy_dict['deploy']获取当前deploy前5的version号
# sql='''
# select k8s_project.project_name,k8s_project_version.version_id from
# k8s_project,k8s_project_version
# where k8s_project.project_id = k8s_project_version.project_id
# and k8s_project.project_name=%s order by k8s_project_version.gmt_create desc limit 3
# '''
# cursor.execute(sql,[deploy_dict['deploy']])
# result=cursor.fetchall()
#通过harborapi获取版本信息，通过正则，截取image中的harbor项目名称,如果正则取到值,获取最近5个版本的版本号
repository_name_re = re.findall('/.+:',deploy_dict['image'])
if repository_name_re:
repository_name = repository_name_re[0][1:-1]
harbor_api = HarborApi(settings.harbor_dict["host"],settings.harbor_dict["user"],settings.harbor_dict["passwd"])
harbor_api.login_get_session_id()
result = harbor_api.tags_info_list(repository_name)[-5:]
result.reverse()
else:
result=[]
deploy_dict['version'] = result
deploy_list.append(deploy_dict)
print(deploy_list)
data['data'] = deploy_list
self.write(json.dumps(data))