create K8S cluster by TOSCA
[oom.git] / TOSCA / kubernetes-cluster-TOSCA / scripts / kubernetes_master / start.py
diff --git a/TOSCA/kubernetes-cluster-TOSCA/scripts/kubernetes_master/start.py b/TOSCA/kubernetes-cluster-TOSCA/scripts/kubernetes_master/start.py
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+#!/usr/bin/env python
+
+# ============LICENSE_START==========================================
+# ===================================================================
+# Copyright © 2017 AT&T
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#============LICENSE_END============================================
+
+#This script will be execute on master host. This script will check whether Kube-DNS is running, and set secrets in cloudify.
+
+import os
+import subprocess
+import pip
+try:
+    import yaml
+except ImportError:
+    pip.main(['install', 'pyyaml'])
+    import yaml
+
+from cloudify import ctx
+from cloudify.exceptions import RecoverableError
+from cloudify import manager
+
+
+def execute_command(_command):
+
+    ctx.logger.debug('_command {0}.'.format(_command))
+
+    subprocess_args = {
+        'args': _command.split(),
+        'stdout': subprocess.PIPE,
+        'stderr': subprocess.PIPE
+    }
+
+    ctx.logger.debug('subprocess_args {0}.'.format(subprocess_args))
+
+    process = subprocess.Popen(**subprocess_args)
+    output, error = process.communicate()
+
+    ctx.logger.debug('command: {0} '.format(_command))
+    ctx.logger.debug('output: {0} '.format(output))
+    ctx.logger.debug('error: {0} '.format(error))
+    ctx.logger.debug('process.returncode: {0} '.format(process.returncode))
+
+    if process.returncode:
+        ctx.logger.error('Running `{0}` returns error.'.format(_command))
+        return False
+
+    return output
+
+
+def check_kubedns_status(_get_pods):
+
+    ctx.logger.debug('get_pods: {0} '.format(_get_pods))
+
+    for pod_line in _get_pods.split('\n'):
+        ctx.logger.debug('pod_line: {0} '.format(pod_line))
+        try:
+            _namespace, _name, _ready, _status, _restarts, _age = pod_line.split()
+        except ValueError:
+            pass
+        else:
+            if 'kube-dns' in _name and 'Running' not in _status:
+                return False
+            elif 'kube-dns' in _name and 'Running' in _status:
+                return True
+    return False
+
+
+if __name__ == '__main__':
+
+    cfy_client = manager.get_rest_client()
+
+    # Checking if the Kubernetes DNS service is running (last step).
+    admin_file_dest = os.path.join(os.path.expanduser('~'), 'admin.conf')
+    os.environ['KUBECONFIG'] = admin_file_dest
+    get_pods = execute_command('kubectl get pods --all-namespaces')
+    if not check_kubedns_status(get_pods):
+        raise RecoverableError('kube-dns not Running')
+
+    # Storing the K master configuration.
+    kubernetes_master_config = {}
+    with open(admin_file_dest, 'r') as outfile:
+        try:
+            kubernetes_master_config = yaml.load(outfile)
+        except yaml.YAMLError as e:
+            RecoverableError(
+                'Unable to read Kubernetes Admin file: {0}: {1}'.format(
+                    admin_file_dest, str(e)))
+    ctx.instance.runtime_properties['configuration_file_content'] = \
+        kubernetes_master_config
+
+    clusters = kubernetes_master_config.get('clusters')
+    _clusters = {}
+    for cluster in clusters:
+        __name = cluster.get('name')
+        _cluster = cluster.get('cluster', {})
+        _secret_key = '%s_certificate_authority_data' % __name
+        if cfy_client and not len(cfy_client.secrets.list(key=_secret_key)) == 1:
+            cfy_client.secrets.create(key=_secret_key, value=_cluster.get('certificate-authority-data'))
+            ctx.logger.info('Set secret: {0}.'.format(_secret_key))
+        else:
+            cfy_client.secrets.update(key=_secret_key, value=_cluster.get('certificate-authority-data'))
+        ctx.instance.runtime_properties['%s_certificate_authority_data' % __name] = _cluster.get('certificate-authority-data')
+        _clusters[__name] = _cluster
+    del __name
+
+    contexts = kubernetes_master_config.get('contexts')
+    _contexts = {}
+    for context in contexts:
+        __name = context.get('name')
+        _context = context.get('context', {})
+        _contexts[__name] = _context
+    del __name
+
+    users = kubernetes_master_config.get('users')
+    _users = {}
+    for user in users:
+        __name = user.get('name')
+        _user = user.get('user', {})
+        _secret_key = '%s_client_certificate_data' % __name
+        if cfy_client and not len(cfy_client.secrets.list(key=_secret_key)) == 1:
+            cfy_client.secrets.create(key=_secret_key, value=_user.get('client-certificate-data'))
+            ctx.logger.info('Set secret: {0}.'.format(_secret_key))
+        else:
+            cfy_client.secrets.update(key=_secret_key, value=_user.get('client-certificate-data'))
+        _secret_key = '%s_client_key_data' % __name
+        if cfy_client and not len(cfy_client.secrets.list(key=_secret_key)) == 1:
+            cfy_client.secrets.create(key=_secret_key, value=_user.get('client-key-data'))
+            ctx.logger.info('Set secret: {0}.'.format(_secret_key))
+        else:
+            cfy_client.secrets.update(key=_secret_key, value=_user.get('client-key-data'))
+        ctx.instance.runtime_properties['%s_client_certificate_data' % __name] = _user.get('client-certificate-data')
+        ctx.instance.runtime_properties['%s_client_key_data' % __name] = _user.get('client-key-data')
+        _users[__name] = _user
+    del __name
+
+    ctx.instance.runtime_properties['kubernetes'] = {
+        'clusters': _clusters,
+        'contexts': _contexts,
+        'users': _users
+    }