Add security docker for functest-kubernetes

run kube-hunter and kube-bench cases dealing with security in kubernetes (check
vulnerabilities) [1][2]

It's the first step only printing the output.

[1]: https://github.com/aquasecurity/kube-bench
[2]: https://github.com/aquasecurity/kube-hunter

Co-Authored-By: Cédric Ollivier <cedric.ollivier@orange.com>
Change-Id: I3bd9bda80046ef7a0c494d51dfb0b8cbfea02bb0
Signed-off-by: mrichomme <morgan.richomme@orange.com>

4 files changed, 186 insertions, 0 deletions

diff --git a/functest_kubernetes/security/__init__.py b/functest_kubernetes/security/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/functest_kubernetes/security/__init__.py
diff --git a/functest_kubernetes/security/kube-bench.yaml b/functest_kubernetes/security/kube-bench.yaml
new file mode 100644
index 00000000..ec42ba16
--- /dev/null
+++ b/functest_kubernetes/security/kube-bench.yaml
@@ -0,0 +1,51 @@
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: kube-bench
+spec:
+  template:
+    metadata:
+      labels:
+        app: kube-bench
+    spec:
+      hostPID: true
+      containers:
+        - name: kube-bench
+          image: aquasec/kube-bench:latest
+          command: ["kube-bench"]
+          volumeMounts:
+            - name: var-lib-etcd
+              mountPath: /var/lib/etcd
+              readOnly: true
+            - name: var-lib-kubelet
+              mountPath: /var/lib/kubelet
+              readOnly: true
+            - name: etc-systemd
+              mountPath: /etc/systemd
+              readOnly: true
+            - name: etc-kubernetes
+              mountPath: /etc/kubernetes
+              readOnly: true
+              # /usr/local/mount-from-host/bin is mounted to access kubectl / kubelet, for auto-detecting the Kubernetes version.
+              # You can omit this mount if you specify --version as part of the command.
+            - name: usr-bin
+              mountPath: /usr/local/mount-from-host/bin
+              readOnly: true
+      restartPolicy: Never
+      volumes:
+        - name: var-lib-etcd
+          hostPath:
+            path: "/var/lib/etcd"
+        - name: var-lib-kubelet
+          hostPath:
+            path: "/var/lib/kubelet"
+        - name: etc-systemd
+          hostPath:
+            path: "/etc/systemd"
+        - name: etc-kubernetes
+          hostPath:
+            path: "/etc/kubernetes"
+        - name: usr-bin
+          hostPath:
+            path: "/usr/bin"
diff --git a/functest_kubernetes/security/kube-hunter.yaml b/functest_kubernetes/security/kube-hunter.yaml
new file mode 100644
index 00000000..ce88c062
--- /dev/null
+++ b/functest_kubernetes/security/kube-hunter.yaml
@@ -0,0 +1,14 @@
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: kube-hunter
+spec:
+  template:
+    spec:
+      containers:
+      - name: kube-hunter
+        image: aquasec/kube-hunter
+        command: ["python", "kube-hunter.py"]
+        args: ["--pod"]
+      restartPolicy: Never
+  backoffLimit: 4
diff --git a/functest_kubernetes/security/security.py b/functest_kubernetes/security/security.py
new file mode 100644
index 00000000..33e70f86
--- /dev/null
+++ b/functest_kubernetes/security/security.py
@@ -0,0 +1,121 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2020 Orange and others.
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+
+"""
+Define the parent for Kubernetes testing.
+"""
+
+from __future__ import division
+
+import logging
+import time
+import yaml
+
+from kubernetes import client
+from kubernetes import config
+from kubernetes import watch
+import pkg_resources
+from xtesting.core import testcase
+
+
+class SecurityTesting(testcase.TestCase):
+    """Run Security job"""
+    namespace = 'default'
+    watch_timeout = 1200
+
+    __logger = logging.getLogger(__name__)
+
+    def __init__(self, **kwargs):
+        super(SecurityTesting, self).__init__(**kwargs)
+        config.load_kube_config()
+        self.corev1 = client.CoreV1Api()
+        self.batchv1 = client.BatchV1Api()
+        self.pod = None
+        self.job_name = None
+
+    def deploy_job(self):
+        """Run Security job
+
+        It runs a single security job and then simply prints its output asis.
+        """
+
+        assert self.job_name
+        with open(pkg_resources.resource_filename(
+                "functest_kubernetes",
+                "security/{}.yaml".format(self.job_name))) as yfile:
+            body = yaml.safe_load(yfile)
+            api_response = self.batchv1.create_namespaced_job(
+                body=body, namespace="default")
+            self.__logger.info("Job %s created", api_response.metadata.name)
+            self.__logger.debug("create_namespaced_job: %s", api_response)
+        watch_job = watch.Watch()
+        for event in watch_job.stream(
+                func=self.batchv1.list_namespaced_job,
+                namespace=self.namespace, timeout_seconds=self.watch_timeout):
+            if (event["object"].metadata.name == self.job_name and
+                    event["object"].status.succeeded == 1):
+                self.__logger.info(
+                    "%s started in %0.2f sec", event['object'].metadata.name,
+                    time.time()-self.start_time)
+                watch_job.stop()
+        pods = self.corev1.list_namespaced_pod(
+            self.namespace, label_selector='job-name={}'.format(self.job_name))
+        self.pod = pods.items[0].metadata.name
+        api_response = self.corev1.read_namespaced_pod_log(
+            name=self.pod, namespace=self.namespace)
+        self.__logger.warning("\n\n%s", api_response)
+        self.result = 100
+
+    def run(self, **kwargs):
+        assert self.job_name
+        self.start_time = time.time()
+        try:
+            self.deploy_job()
+        except client.rest.ApiException:
+            self.__logger.exception("Cannot run %s", self.job_name)
+        self.stop_time = time.time()
+
+    def clean(self):
+        try:
+            api_response = self.corev1.delete_namespaced_pod(
+                name=self.pod, namespace=self.namespace)
+            self.__logger.debug("delete_namespaced_pod: %s", api_response)
+        except client.rest.ApiException:
+            pass
+        try:
+            api_response = self.batchv1.delete_namespaced_job(
+                name=self.job_name, namespace=self.namespace)
+            self.__logger.debug(
+                "delete_namespaced_deployment: %s", api_response)
+        except client.rest.ApiException:
+            pass
+
+
+class KubeHunter(SecurityTesting):
+    """kube-hunter hunts for security weaknesses in Kubernetes clusters.
+
+    See https://github.com/aquasecurity/kube-hunter for more details
+    """
+
+    def __init__(self, **kwargs):
+        super(KubeHunter, self).__init__(**kwargs)
+        self.job_name = "kube-hunter"
+
+
+class KubeBench(SecurityTesting):
+    """kube-bench checks whether Kubernetes is deployed securelyself.
+
+    It runs the checks documented in the CIS Kubernetes Benchmark.
+
+    See https://github.com/aquasecurity/kube-bench for more details
+    """
+
+    def __init__(self, **kwargs):
+        super(KubeBench, self).__init__(**kwargs)
+        self.job_name = "kube-bench"