| #!/usr/bin/env python |
| """ |
| This script attempts to probe an ONAP deployment in a Kubernetes cluster on an OpenStack stack |
| and extract all pods and corresponding docker image versions along with some of the tool versions utilised. |
| """ |
| |
| import os |
| import sys |
| import subprocess |
| import argparse |
| import logging |
| |
| OPENSTACK_GET_SERVER_IPS = 'openstack server list --name "^(%s-).*" -c Name -c Networks -f value --sort-column Name' |
| |
| SSH_CMD_TEMPLATE = 'ssh -o StrictHostKeychecking=no -i %s ubuntu@%s "sudo su -c \\"%s\\""' |
| |
| KUBECTL_GET_ALL_POD_IMAGES_AND_SHAS = 'kubectl get pods --all-namespaces -o=jsonpath=\'{range .items[*]}' \ |
| '{\\\\\\"\\n\\\\\\"}{.metadata.name}{\\\\\\":::\\\\\\"}' \ |
| '{range .status.containerStatuses[*]}{.image}{\\\\\\"___\\\\\\"}' \ |
| '{.imageID}{\\\\\\" \\\\\\"}{end}{end}{\\\\\\"\\n\\\\\\"}\'' |
| |
| DOCKER_INSPECT = 'docker inspect --format=\'{{index .RepoTags 0}}{{\\\\\\" \\\\\\"}}{{index .RepoDigests 0}}\' ' \ |
| '\$(docker images -q | uniq| tr \'\n\' \' \')' |
| |
| KUBECTL_VERSION = 'kubectl version' |
| DOCKER_VERSION = 'docker --version' |
| |
| logging.basicConfig(level=logging.DEBUG, format='%(message)s') |
| file_log = logging.FileHandler(filename='onap-probe-report.txt', mode='w') |
| file_log.setLevel(logging.INFO) |
| formatter = logging.Formatter('%(message)s') |
| file_log.setFormatter(formatter) |
| logging.getLogger('').addHandler(file_log) |
| |
| |
| class CommandResult(object): |
| def __init__(self, exit_code, stdout, stderr): |
| self.exit_code = exit_code |
| self.stdout = stdout |
| self.stderr = stderr |
| |
| |
| def run_command_or_exit(command, message=""): |
| if message: |
| logging.debug(message) |
| logging.debug('cmd> ' + command) |
| |
| child = subprocess.Popen(command, stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE, shell=True) |
| result = child.communicate() |
| |
| cmd_result = CommandResult(child.returncode, |
| result[0].strip(), result[1].strip()) |
| |
| if cmd_result.exit_code: |
| logging.error("exit_code: '%d', stdout: '%s', stderr: '%s'" % |
| (cmd_result.exit_code, cmd_result.stdout, cmd_result.stderr)) |
| sys.exit(1) |
| |
| return cmd_result |
| |
| |
| class OpenStackK8sCluster(object): |
| def __init__(self, stack_name, identity_file): |
| self.stack_name = stack_name |
| self.identity_file = identity_file |
| self.servers = {} |
| self.vm_docker_images = set() |
| self.kubectl_version = 'unknown' |
| self.docker_version = 'unknown' |
| |
| response = run_command_or_exit(OPENSTACK_GET_SERVER_IPS % stack_name, |
| "Get all stack servers and ip addressed using stack name").stdout |
| for line in response.split('\n'): |
| parts = line.split() |
| self.servers[parts[0].replace(stack_name+'-', "")] = parts[2] |
| |
| def __str__(self): |
| desc = "Stack name: " + self.stack_name + '\n' |
| for key, value in sorted(self.servers.items()): |
| desc += " " + key + " : " + value + "\n" |
| return desc.strip() |
| |
| def get_stack_name(self): |
| return self.stack_name |
| |
| def get_identity_file(self): |
| return self.identity_file |
| |
| def get_rancher_ip_address(self): |
| return self.servers['rancher'] |
| |
| def get_worker_nodes(self): |
| return [value for key, value in self.servers.items() if 'k8s-' in key.lower()] |
| |
| def get_orchestrators(self): |
| return [value for key, value in self.servers.items() if 'orch-' in key.lower()] |
| |
| def determine_docker_images_on_vms(self): |
| for node_ip in self.get_worker_nodes() + self.get_orchestrators(): |
| command = SSH_CMD_TEMPLATE % (self.get_identity_file(), node_ip, DOCKER_INSPECT) |
| vm_inspect_results = run_command_or_exit(command, "Examine server and list docker images").stdout |
| |
| for inspect_line in vm_inspect_results.split('\n'): |
| name_tag, name_digest = inspect_line.split(' ') |
| name, tag = name_tag.rsplit(':', 1) |
| digest = name_digest.split('sha256:')[1] |
| self.vm_docker_images.add((name, tag, digest)) |
| |
| def get_docker_images_on_vms(self): |
| return self.vm_docker_images |
| |
| def get_number_of_vm_docker_images(self): |
| return len(self.vm_docker_images) |
| |
| def determine_kubectl_version(self): |
| command = SSH_CMD_TEMPLATE % (self.get_identity_file(), self.get_rancher_ip_address(), KUBECTL_VERSION) |
| self.kubectl_version = run_command_or_exit(command, "Examine rancher vm to determine kubectl version").stdout |
| |
| def get_kubectl_version(self): |
| return self.kubectl_version |
| |
| def determine_docker_version(self): |
| command = SSH_CMD_TEMPLATE % (self.get_identity_file(), self.get_worker_nodes()[0], DOCKER_VERSION) |
| self.docker_version = run_command_or_exit(command, "Examine worker node to determine docker version").stdout |
| |
| def get_docker_version(self): |
| return self.docker_version |
| |
| |
| class OnapDeployment(object): |
| def __init__(self, openstack_stack): |
| self.stack = openstack_stack |
| self.raw = "" |
| self.pods = [] |
| self.unique_images = set() |
| |
| def dig(self): |
| command = SSH_CMD_TEMPLATE % (self.stack.get_identity_file(), self.stack.get_rancher_ip_address(), |
| KUBECTL_GET_ALL_POD_IMAGES_AND_SHAS) |
| self.raw = run_command_or_exit(command, "Use kubectl to retrieve all pods and pod images in K8S cluster").stdout |
| |
| for row in self.raw.strip().split("\n"): |
| self.pods.append(Pod(row)) |
| |
| for pod in self.pods: |
| for image in pod.get_images(): |
| self.unique_images.add(image) |
| |
| def __str__(self): |
| desc = "Pods and docker images:\n" |
| for pod in sorted(self.pods): |
| desc += str(pod) |
| return desc.strip() |
| |
| def get_number_of_pods(self): |
| return len(self.pods) |
| |
| def get_docker_images(self): |
| return sorted(self.unique_images) |
| |
| def get_number_of_unique_docker_images(self): |
| return len(self.unique_images) |
| |
| def get_number_of_docker_images(self): |
| images = [] |
| for pod in self.pods: |
| for image in pod.get_images(): |
| images.append(image) |
| return len(images) |
| |
| |
| class Pod(object): |
| def __init__(self, data): |
| self.name, images = data.strip().split(":::") |
| self.shas_images = {} |
| for item in images.split(" "): |
| image_raw, sha_raw = item.split("___") |
| if "sha256:" in images: |
| self.shas_images[sha_raw.split("sha256:")[1]] = image_raw |
| |
| def get_images(self): |
| return self.shas_images.values() |
| |
| def __cmp__(self, other): |
| return cmp(self.name, other.name) |
| |
| def __str__(self): |
| desc = self.name + "\n" |
| for key, value in sorted(self.shas_images.items(), key=lambda x: x[1]): |
| desc += " " + value + ", " + key + "\n" |
| return desc |
| |
| |
| def main(): |
| # Disable output buffering to receive the output instantly |
| sys.stdout = os.fdopen(sys.stdout.fileno(), "w", 0) |
| sys.stderr = os.fdopen(sys.stderr.fileno(), "w", 0) |
| |
| help_desc = "Script to probe an ONAP k8s cluster on an OpenStack stack and report back information on the " \ |
| "stack vms, all pods and corresponding docker image versions/digests and some of the tool versions " \ |
| "utilised." |
| parser = argparse.ArgumentParser(description=help_desc) |
| parser.add_argument("-s", "--stack-name", dest="stack_name", |
| help="OpenStack stack name used by this ONAP deployment", |
| metavar="STACKNAME", required=True) |
| parser.add_argument("-i", "--identity_file", dest="identity_file", |
| help="OpenStack identity file to be used by ssh to access servers", |
| metavar="IDENTITY-FILE", required=True) |
| args = parser.parse_args() |
| |
| openstack_k8s = OpenStackK8sCluster(args.stack_name, args.identity_file) |
| openstack_k8s.determine_kubectl_version() |
| openstack_k8s.determine_docker_version() |
| openstack_k8s.determine_docker_images_on_vms() |
| |
| onap_dep = OnapDeployment(openstack_k8s) |
| onap_dep.dig() |
| |
| logging.info('\n%s\n' % openstack_k8s) |
| logging.info("number of pods: %d" % onap_dep.get_number_of_pods()) |
| logging.info("number of docker images in pods: %d" % onap_dep.get_number_of_docker_images()) |
| logging.info("number of unique docker images in pods: %d" % onap_dep.get_number_of_unique_docker_images()) |
| logging.info("number of unique docker images on vms: %d" % openstack_k8s.get_number_of_vm_docker_images()) |
| logging.info("docker version:\n%s" % openstack_k8s.get_docker_version()) |
| logging.info("kubectl version:\n%s" % openstack_k8s.get_kubectl_version()) |
| |
| logging.info("\n%s\n" % onap_dep) |
| |
| logging.info("<image-name>,<image-version>,<image-digest>") |
| for entry in sorted(openstack_k8s.get_docker_images_on_vms()): |
| logging.info('%s,%s,%s' % (entry[0], entry[1], entry[2])) |
| |
| |
| if __name__ == "__main__": |
| main() |