kubespray 2.24 추가

contrib/aws_inventory/kubespray-aws-inventory.py

@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+
+from __future__ import print_function
+import boto3
+import os
+import argparse
+import json
+
+class SearchEC2Tags(object):
+
+  def __init__(self):
+    self.parse_args()
+    if self.args.list:
+      self.search_tags()
+    if self.args.host:
+      data = {}
+      print(json.dumps(data, indent=2))
+
+  def parse_args(self):
+
+    ##Check if VPC_VISIBILITY is set, if not default to private
+    if "VPC_VISIBILITY" in os.environ:
+      self.vpc_visibility = os.environ['VPC_VISIBILITY']
+    else:
+      self.vpc_visibility = "private"
+
+    ##Support --list and --host flags. We largely ignore the host one.
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--list', action='store_true', default=False, help='List instances')
+    parser.add_argument('--host', action='store_true', help='Get all the variables about a specific instance')
+    self.args = parser.parse_args()
+
+  def search_tags(self):
+    hosts = {}
+    hosts['_meta'] = { 'hostvars': {} }
+
+    ##Search ec2 three times to find nodes of each group type. Relies on kubespray-role key/value.
+    for group in ["kube_control_plane", "kube_node", "etcd"]:
+      hosts[group] = []
+      tag_key = "kubespray-role"
+      tag_value = ["*"+group+"*"]
+      region = os.environ['AWS_REGION']
+
+      ec2 = boto3.resource('ec2', region)
+      filters = [{'Name': 'tag:'+tag_key, 'Values': tag_value}, {'Name': 'instance-state-name', 'Values': ['running']}]
+      cluster_name = os.getenv('CLUSTER_NAME')
+      if cluster_name:
+        filters.append({'Name': 'tag-key', 'Values': ['kubernetes.io/cluster/'+cluster_name]})
+      instances = ec2.instances.filter(Filters=filters)
+      for instance in instances:
+
+        ##Suppose default vpc_visibility is private
+        dns_name = instance.private_dns_name
+        ansible_host = {
+          'ansible_ssh_host': instance.private_ip_address
+        }
+
+        ##Override when vpc_visibility actually is public
+        if self.vpc_visibility == "public":
+          dns_name = instance.public_dns_name
+          ansible_host = {
+            'ansible_ssh_host': instance.public_ip_address
+          }
+
+        ##Set when instance actually has node_labels
+        node_labels_tag = list(filter(lambda t: t['Key'] == 'kubespray-node-labels', instance.tags))
+        if node_labels_tag:
+          ansible_host['node_labels'] = dict([ label.strip().split('=') for label in node_labels_tag[0]['Value'].split(',') ])
+
+        ##Set when instance actually has node_taints
+        node_taints_tag = list(filter(lambda t: t['Key'] == 'kubespray-node-taints', instance.tags))
+        if node_taints_tag:
+          ansible_host['node_taints'] = list([ taint.strip() for taint in node_taints_tag[0]['Value'].split(',') ])
+
+        hosts[group].append(dns_name)
+        hosts['_meta']['hostvars'][dns_name] = ansible_host
+
+    hosts['k8s_cluster'] = {'children':['kube_control_plane', 'kube_node']}
+    print(json.dumps(hosts, sort_keys=True, indent=2))
+
+SearchEC2Tags()