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302 lines
9.5 KiB
302 lines
9.5 KiB
#!/home/alpcentaur/ProjektA/PrototypeWebApp/venv/bin/python3.5
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# Copyright (c) 2009 Chris Moyer http://coredumped.org/
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish, dis-
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# tribute, sublicense, and/or sell copies of the Software, and to permit
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# persons to whom the Software is furnished to do so, subject to the fol-
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# lowing conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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#
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# Elastic Load Balancer Tool
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#
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VERSION = "0.2"
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usage = """%prog [options] [command]
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Commands:
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list|ls List all Elastic Load Balancers
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delete <name> Delete ELB <name>
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get <name> Get all instances associated with <name>
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create <name> Create an ELB; -z and -l are required
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add <name> <instances> Add <instances> in ELB <name>
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remove|rm <name> <instances> Remove <instances> from ELB <name>
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reap <name> Remove terminated instances from ELB <name>
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enable|en <name> <zone> Enable Zone <zone> for ELB <name>
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disable <name> <zone> Disable Zone <zone> for ELB <name>
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addl <name> Add listeners (specified by -l) to the ELB
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<name>
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rml <name> <port> Remove Listener(s) specified by the port on
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the ELB <name>
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"""
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def find_elb(elb, name):
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try:
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elbs = elb.get_all_load_balancers(name)
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except boto.exception.BotoServerError as se:
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if se.code == 'LoadBalancerNotFound':
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elbs = []
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else:
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raise
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if len(elbs) < 1:
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print "No load balancer by the name of %s found" % name
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return None
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elif len(elbs) > 1:
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print "More than one elb matches %s?" % name
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return None
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# Should not happen
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if name not in elbs[0].name:
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print "No load balancer by the name of %s found" % name
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return None
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return elbs[0]
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def list(elb):
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"""List all ELBs"""
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print "%-20s %s" % ("Name", "DNS Name")
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print "-" * 80
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for b in elb.get_all_load_balancers():
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print "%-20s %s" % (b.name, b.dns_name)
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def check_valid_region(conn, region):
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if conn is None:
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print 'Invalid region (%s)' % region
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sys.exit(1)
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def get(elb, name):
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"""Get details about ELB <name>"""
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b = find_elb(elb, name)
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if b:
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print "=" * 80
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print "Name: %s" % b.name
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print "DNS Name: %s" % b.dns_name
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if b.canonical_hosted_zone_name:
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chzn = b.canonical_hosted_zone_name
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print "Canonical hosted zone name: %s" % chzn
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if b.canonical_hosted_zone_name_id:
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chznid = b.canonical_hosted_zone_name_id
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print "Canonical hosted zone name id: %s" % chznid
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print
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print "Health Check: %s" % b.health_check
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print
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print "Listeners"
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print "---------"
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print "%-8s %-8s %s" % ("IN", "OUT", "PROTO")
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for l in b.listeners:
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print "%-8s %-8s %s" % (l[0], l[1], l[2])
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print
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print " Zones "
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print "---------"
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for z in b.availability_zones:
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print z
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print
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# Make map of all instance Id's to Name tags
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import boto
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from boto.compat.six import iteritems
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if not options.region:
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ec2 = boto.connect_ec2()
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else:
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ec2 = boto.ec2.connect_to_region(options.region)
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check_valid_region(ec2, options.region)
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instance_health = b.get_instance_health()
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instances = [state.instance_id for state in instance_health]
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names = dict((k,'') for k in instances)
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for i in ec2.get_only_instances():
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if i.id in instances:
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names[i.id] = i.tags.get('Name', '')
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name_column_width = max([4] + [len(v) for k,v in iteritems(names)]) + 2
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print "Instances"
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print "---------"
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print "%-12s %-15s %-*s %s" % ("ID",
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"STATE",
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name_column_width, "NAME",
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"DESCRIPTION")
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for state in instance_health:
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print "%-12s %-15s %-*s %s" % (state.instance_id,
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state.state,
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name_column_width, names[state.instance_id],
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state.description)
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print
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def create(elb, name, zones, listeners):
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"""Create an ELB named <name>"""
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l_list = []
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for l in listeners:
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l = l.split(",")
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if l[2] == 'HTTPS':
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l_list.append((int(l[0]), int(l[1]), l[2], l[3]))
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else:
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l_list.append((int(l[0]), int(l[1]), l[2]))
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b = elb.create_load_balancer(name, zones, l_list)
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return get(elb, name)
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def delete(elb, name):
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"""Delete this ELB"""
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b = find_elb(elb, name)
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if b:
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b.delete()
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print "Load Balancer %s deleted" % name
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def add_instances(elb, name, instances):
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"""Add <instance> to ELB <name>"""
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b = find_elb(elb, name)
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if b:
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b.register_instances(instances)
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return get(elb, name)
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def remove_instances(elb, name, instances):
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"""Remove instance from elb <name>"""
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b = find_elb(elb, name)
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if b:
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b.deregister_instances(instances)
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return get(elb, name)
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def reap_instances(elb, name):
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"""Remove terminated instances from elb <name>"""
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b = find_elb(elb, name)
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if b:
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for state in b.get_instance_health():
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if (state.state == 'OutOfService' and
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state.description == 'Instance is in terminated state.'):
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b.deregister_instances([state.instance_id])
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return get(elb, name)
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def enable_zone(elb, name, zone):
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"""Enable <zone> for elb"""
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b = find_elb(elb, name)
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if b:
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b.enable_zones([zone])
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return get(elb, name)
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def disable_zone(elb, name, zone):
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"""Disable <zone> for elb"""
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b = find_elb(elb, name)
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if b:
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b.disable_zones([zone])
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return get(elb, name)
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def add_listener(elb, name, listeners):
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"""Add listeners to a given load balancer"""
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l_list = []
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for l in listeners:
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l = l.split(",")
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l_list.append((int(l[0]), int(l[1]), l[2]))
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b = find_elb(elb, name)
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if b:
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b.create_listeners(l_list)
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return get(elb, name)
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def rm_listener(elb, name, ports):
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"""Remove listeners from a given load balancer"""
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b = find_elb(elb, name)
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if b:
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b.delete_listeners(ports)
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return get(elb, name)
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if __name__ == "__main__":
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try:
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import readline
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except ImportError:
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pass
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import boto
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import sys
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from optparse import OptionParser
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from boto.mashups.iobject import IObject
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parser = OptionParser(version=VERSION, usage=usage)
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parser.add_option("-z", "--zone",
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help="Operate on zone",
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action="append", default=[], dest="zones")
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parser.add_option("-l", "--listener",
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help="Specify Listener in,out,proto",
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action="append", default=[], dest="listeners")
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parser.add_option("-r", "--region",
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help="Region to connect to",
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action="store", dest="region")
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(options, args) = parser.parse_args()
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if len(args) < 1:
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parser.print_help()
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sys.exit(1)
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if not options.region:
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elb = boto.connect_elb()
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else:
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import boto.ec2.elb
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elb = boto.ec2.elb.connect_to_region(options.region)
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check_valid_region(elb, options.region)
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print "%s" % (elb.region.endpoint)
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command = args[0].lower()
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if command in ("ls", "list"):
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list(elb)
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elif command == "get":
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get(elb, args[1])
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elif command == "create":
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if not options.listeners:
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print "-l option required for command create"
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sys.exit(1)
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if not options.zones:
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print "-z option required for command create"
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sys.exit(1)
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create(elb, args[1], options.zones, options.listeners)
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elif command == "delete":
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delete(elb, args[1])
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elif command in ("add", "put"):
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add_instances(elb, args[1], args[2:])
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elif command in ("rm", "remove"):
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remove_instances(elb, args[1], args[2:])
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elif command == "reap":
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reap_instances(elb, args[1])
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elif command in ("en", "enable"):
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enable_zone(elb, args[1], args[2])
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elif command == "disable":
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disable_zone(elb, args[1], args[2])
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elif command == "addl":
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if not options.listeners:
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print "-l option required for command addl"
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sys.exit(1)
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add_listener(elb, args[1], options.listeners)
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elif command == "rml":
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if not args[2:]:
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print "port required"
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sys.exit(2)
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rm_listener(elb, args[1], args[2:])
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