66 lines
1.8 KiB
Python
66 lines
1.8 KiB
Python
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#!/usr/bin/env python
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# A simple dynamic replacemant of 'kargo prepare'
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# Generates ansible inventory from a list of IPs in 'nodes' file.
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import argparse
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import json
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def read_nodes_from_file(filename):
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f = open(filename, 'r')
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content = [x.strip('\n') for x in f.readlines()]
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return content
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def nodes_to_hash(nodes_list, masters):
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nodes = {
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'all': {
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'hosts': [],
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},
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'etcd': {
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'hosts': [],
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},
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'kube-master': {
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'hosts': [],
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},
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'kube-node': {
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'hosts': [],
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},
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'k8s-cluster': {
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'children': ['kube-node', 'kube-master']
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}
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}
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for node_ip in nodes_list:
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nodes['all']['hosts'].append("%s" % node_ip)
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nodes['kube-node']['hosts'].append("%s" % node_ip)
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if i <= masters:
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nodes['kube-master']['hosts'].append("%s" % node_ip)
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if i <= 3:
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nodes['etcd']['hosts'].append("%s" % node_ip)
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return nodes
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def main():
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parser = argparse.ArgumentParser(description='Ansible dynamic inventory')
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parser.add_argument('--nodes', help='File with list of nodes, one IP per line', default='nodes')
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parser.add_argument('--masters', type=int, help='Number of master nodes, will be taken from the top of list', default=2)
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parser.add_argument('--list', action='store_true')
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parser.add_argument('--host', default=False)
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args = parser.parse_args()
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nodes_list = read_nodes_from_file(args.nodes)
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if len(nodes_list) < 3:
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print "Error: requires at least 3 nodes"
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return
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nodes = nodes_to_hash(nodes_list, args.masters)
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if args.host:
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print "{}"
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else:
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print json.dumps(nodes)
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if __name__ == "__main__":
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main()
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