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jiangtao7/autoscaling_boto.py

Forked from numan/autoscaling_boto.py
Created September 13, 2018 05:09
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Revisions

  1. @numan numan revised this gist Jul 18, 2011. 1 changed file with 3 additions and 3 deletions.
    6 changes: 3 additions & 3 deletions autoscaling_boto.py
    View file
    Original file line number Diff line number Diff line change
    @@ -35,7 +35,7 @@
    This section is for configuring the rest of the script.
    This script will do 3 things:
    1. Setup a new Elastic Load Balancer
    2. Create a Auto Scaling Group and configure it with an Launch Configuration
    2. Create an Auto Scaling Group and configure it with an Launch Configuration
    3. Create Policies for Scaling Up and Scaling Down
    """
    AWS_ACCESS_KEY = '' #Your access key
    @@ -45,7 +45,7 @@

    elastic_load_balancer = {
    'name': 'my-lb',#The name of your load balancer
    'health_check_target': 'HTTP:80/index.html',#Loaction to perform health checks
    'health_check_target': 'HTTP:80/index.html',#Location to perform health checks
    'connection_forwarding': [(80, 80, 'http'), (443, 443, 'tcp')],#[Load Balancer Port, EC2 Instance Port, Protocol]
    'timeout': 3, #Number of seconds to wait for a response from a ping
    'interval': 20 #Number of seconds between health checks
    @@ -66,7 +66,7 @@
    'access_key': 'as-ami-ec2key', #The key the EC2 instance will be configured with
    'security_groups': ['as-ami-webserver'], #The security group(s) your instances will belong to
    'instance_type': 't1.micro', #The size of instance that will be launched
    'instance_monitoring': True #Indicated weather the instances will be launched with detailed monitoring enabled
    'instance_monitoring': True #Indicated whether the instances will be launched with detailed monitoring enabled. Needed to enable CloudWatch
    }

    ##############################END CONFIGURATION#######################################
  2. @numan numan revised this gist Jul 17, 2011. 1 changed file with 5 additions and 3 deletions.
    8 changes: 5 additions & 3 deletions autoscaling_boto.py
    View file
    Original file line number Diff line number Diff line change
    @@ -46,7 +46,9 @@
    elastic_load_balancer = {
    'name': 'my-lb',#The name of your load balancer
    'health_check_target': 'HTTP:80/index.html',#Loaction to perform health checks
    'connection_forwarding': [(80, 80, 'http'), (443, 443, 'tcp')]#[Load Balancer Port, EC2 Instance Port, Protocol]
    'connection_forwarding': [(80, 80, 'http'), (443, 443, 'tcp')],#[Load Balancer Port, EC2 Instance Port, Protocol]
    'timeout': 3, #Number of seconds to wait for a response from a ping
    'interval': 20 #Number of seconds between health checks
    }

    autoscaling_group = {
    @@ -84,9 +86,9 @@
    #=================Create a Load Balancer=============================================
    #For a complete list of options see http://boto.cloudhackers.com/ref/ec2.html#module-boto.ec2.elb.healthcheck
    hc = HealthCheck('healthCheck',
    interval=20,
    interval=elastic_load_balancer['interval'],
    target=elastic_load_balancer['health_check_target'],
    timeout=3)
    timeout=elastic_load_balancer['timeout'])

    #For a complete list of options see http://boto.cloudhackers.com/ref/ec2.html#boto.ec2.elb.ELBConnection.create_load_balancer
    lb = conn_elb.create_load_balancer(elastic_load_balancer['name'],
  3. @numan numan created this gist Jul 17, 2011.
    133 changes: 133 additions & 0 deletions autoscaling_boto.py
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,133 @@
    """
    The MIT License (MIT)
    Copyright (c) 2011 Numan Sachwani
    Permission is hereby granted, free of charge, to any person obtaining a copy of
    this software and associated documentation files (the "Software"), to deal in
    the Software without restriction, including without limitation the rights to
    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
    of the Software, and to permit persons to whom the Software is furnished to do
    so, subject to the following conditions:
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
    """
    import boto.ec2

    from boto.ec2.elb import ELBConnection
    from boto.ec2.elb import HealthCheck

    from boto.ec2.autoscale import AutoScaleConnection
    from boto.ec2.autoscale import LaunchConfiguration
    from boto.ec2.autoscale import AutoScalingGroup
    from boto.ec2.autoscale import ScalingPolicy

    ##############################CONFIGURATION#######################################
    """
    This section is for configuring the rest of the script.
    This script will do 3 things:
    1. Setup a new Elastic Load Balancer
    2. Create a Auto Scaling Group and configure it with an Launch Configuration
    3. Create Policies for Scaling Up and Scaling Down
    """
    AWS_ACCESS_KEY = '' #Your access key
    AWS_SECRET_KEY = '' #Your secret key

    region = 'us-east-1' #The region you want to connect to

    elastic_load_balancer = {
    'name': 'my-lb',#The name of your load balancer
    'health_check_target': 'HTTP:80/index.html',#Loaction to perform health checks
    'connection_forwarding': [(80, 80, 'http'), (443, 443, 'tcp')]#[Load Balancer Port, EC2 Instance Port, Protocol]
    }

    autoscaling_group = {
    'name': 'my-autoscaling-group',#descriptive name for your auto scaling group
    'min_size': 1,#Minimum number of instances that should be running at all times
    'max_size': 1 #Maximum number of instances that should be running at all times

    }

    lc_name = 'my-launch-config' #Descriptive name for your launch configuration

    #=================AMI to launch======================================================
    as_ami = {
    'id': 'ami-8e1fece7', #The AMI ID of the instance your Auto Scaling group will launch
    'access_key': 'as-ami-ec2key', #The key the EC2 instance will be configured with
    'security_groups': ['as-ami-webserver'], #The security group(s) your instances will belong to
    'instance_type': 't1.micro', #The size of instance that will be launched
    'instance_monitoring': True #Indicated weather the instances will be launched with detailed monitoring enabled
    }

    ##############################END CONFIGURATION#######################################

    #=================Construct a list of all availability zones for your region=========
    conn_reg = boto.ec2.connect_to_region(region_name=region)
    zones = conn_reg.get_all_zones()

    zoneStrings = []
    for zone in zones:
    zoneStrings.append(zone.name)


    conn_elb = ELBConnection(AWS_ACCESS_KEY, AWS_SECRET_KEY)
    conn_as = AutoScaleConnection(AWS_ACCESS_KEY, AWS_SECRET_KEY)

    #=================Create a Load Balancer=============================================
    #For a complete list of options see http://boto.cloudhackers.com/ref/ec2.html#module-boto.ec2.elb.healthcheck
    hc = HealthCheck('healthCheck',
    interval=20,
    target=elastic_load_balancer['health_check_target'],
    timeout=3)

    #For a complete list of options see http://boto.cloudhackers.com/ref/ec2.html#boto.ec2.elb.ELBConnection.create_load_balancer
    lb = conn_elb.create_load_balancer(elastic_load_balancer['name'],
    zoneStrings,
    elastic_load_balancer['connection_forwarding'])

    lb.configure_health_check(hc)

    #DNS name for your new load balancer
    print "Map the CNAME of your website to: %s" % (lb.dns_name)

    #=================Create a Auto Scaling Group and a Launch Configuration=============================================
    #For a complete list of options see http://boto.cloudhackers.com/ref/ec2.html#boto.ec2.autoscale.launchconfig.LaunchConfiguration
    lc = LaunchConfiguration(name=lc_name, image_id=as_ami['id'],
    key_name=as_ami['access_key'],
    security_groups=as_ami['security_groups'],
    instance_type=as_ami['instance_type'],
    instance_monitoring=as_ami['instance_monitoring'])
    conn_as.create_launch_configuration(lc)

    #For a complete list of options see http://boto.cloudhackers.com/ref/ec2.html#boto.ec2.autoscale.group.AutoScalingGroup
    ag = AutoScalingGroup(group_name=autoscaling_group['name'], load_balancers=[elastic_load_balancer['name']],
    availability_zones=zoneStrings,
    launch_config=lc, min_size=autoscaling_group['min_size'], max_size=autoscaling_group['max_size'])
    conn_as.create_auto_scaling_group(ag)


    #=================Create Scaling Policies=============================================
    #Policy for scaling the number of servers up and down
    #For a complete list of options see http://boto.cloudhackers.com/ref/ec2.html#boto.ec2.autoscale.policy.ScalingPolicy
    scalingUpPolicy = ScalingPolicy(name='webserverScaleUpPolicy',
    adjustment_type='ChangeInCapacity',
    as_name=ag.name,
    scaling_adjustment=2,
    cooldown=180)

    scalingDownPolicy = ScalingPolicy(name='webserverScaleDownPolicy',
    adjustment_type='ChangeInCapacity',
    as_name=ag.name,
    scaling_adjustment=-1,
    cooldown=180)

    conn_as.create_scaling_policy(scalingUpPolicy)
    conn_as.create_scaling_policy(scalingDownPolicy)