Auto-Scaling (AS)

Auto-Scaling Configuration

An Auto-Scaling (AS) configuration is a template of Elastic Cloud Servers in an AS group. It defines the specifications of the instances to be added to the AS group. The AS configuration is decoupled from the AS group and can be used several times in different groups. Up to 100 AS configurations can be created for each user.

List Configurations

This interface is used to query all Auto-Scaling configurations and to filter the output with query parameters.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')

for config in conn.auto_scaling.configs():
    print(config)

Create Configuration

This interface is used to create an Auto-Scaling Configuration instance with parameters.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')

attrs = {
    'name': 'test-config',
    'instance_config': {
        'flavorRef': 's2.medium.1',
        'imageRef': '1616e0b6-503a-4698-946f-cf9942c4c73b',
        'disk': [{
            'size': 20,
            'volume_type': 'SATA',
            'disk_type': 'SYS'
        }],
        'key_name': 'test-key',
    }
}

config = conn.auto_scaling.create_config(**attrs)
print(config)

Get Configuration

This interface is used to get an Auto-Scaling Configuration by ID or an instance of class Config.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


config_id = "1234567-6aa0-4c8b-b350-3bd937addeb7"
config = conn.auto_scaling.get_config(config_id)
print(config)

Find Configuration

This interface is used to find an Auto-Scaling Configuration instance by name or id.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')

config = "config_name_or_id"

config = conn.auto_scaling.find_config(config)
print(config)

Delete Configuration

This interface is used to delete an Auto-Scaling Configuration instance by id or an instance of class Config.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


config_id = '1234567-ad7a-48ce-8f92-b55c651439d2'
conn.auto_scaling.delete_config(config_id)

Batch Delete Configurations

This interface is used to delete multiple Auto-Scaling Configuration instances by id or an instance of class Config.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')

config1 = conn.auto_scaling.find_config('test-config1')
config2 = conn.auto_scaling.find_config('test-config2')

configs = [config1, config2]

conn.auto_scaling.batch_delete_configs(configs)

Auto-Scaling Group

An Auto-Scaling (AS) group consists of a collection of instances that apply to the same scaling scenario. An AS group specifies parameters, such as the maximum number of instances, expected number of instances, minimum number of instances, VPC, subnet, and load balancing. Each user can create a maximum of 25 AS groups by default.

List Groups

This interface is used to query all Auto-Scaling Groups and to filter the output with query parameters.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')

for group in conn.auto_scaling.groups():
    print(group)

Create Group

This interface is used to create an Auto-Scaling Group with parameters.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')

attrs = {
    "scaling_group_name": "TestGroup",
    "scaling_configuration_id": "0d138717-e79d-4fa7-b8aa-37ddec1b3ce7",
    "desire_instance_number": 0,
    "min_instance_number": 0,
    "max_instance_number": 10,
    "vpc_id": "26ca2783-dc40-4e3a-95b1-5a0756441e12",
    "available_zones": ["eu-de-01", "eu-de-03"],
    "networks": [
        {
            "id": "25d24fc8-d019-4a34-9fff-0a09fde6a9cb"
        }
    ]
}

group = conn.auto_scaling.create_group(**attrs)
print(group)

Get Group

This interface is used to get an Auto-Scaling Group by ID or an instance of class Group.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


group_id = "1234567-6aa0-4c8b-b350-3bd937addeb7"
group = conn.auto_scaling.get_group(group_id)
print(group)

Find Group

This interface is used to find an Auto-Scaling Group instance by name or id.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')

group = "group_name_or_id"

group = conn.auto_scaling.find_group(group)
print(group)

Delete Group

This interface is used to delete an Auto-Scaling Group instance by id or an instance of class Group.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


group_id = '1234567-ad7a-48ce-8f92-b55c651439d2'
conn.auto_scaling.delete_group(group_id)

Pause Group

This interface is used to pause an Auto-Scaling Group instance in passive state by using id or an instance of class Group.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


group = "group_name_or_id"
group = conn.auto_scaling.find_group(group)

conn.auto_scaling.pause_group(group)

Resume Group

This interface is used to resume an Auto-Scaling Group instance in active state by using id or an instance of class Group.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


group_id = "123456_group_id"

conn.auto_scaling.resume_group(group_id)

Auto-Scaling Policy

An Auto-Scaling (AS) policy defines whether to increase or decrease the number of instances in an AS group. If the number and the expected number of instances in an AS group are different due to the execution of the AS policy, AS automatically adjusts the number of instances to the expected. AS supports the following policy variants:

• alarm-triggered policy

• periodic policy

• scheduled policy

List Policy

This interface is used to query all Auto-Scaling Policies of an AS group and to filter the output with query parameters.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')

group = "group_name_or_id"
group = conn.auto_scaling.find_group(group)

for policy in conn.auto_scaling.policies(group):
    print(policy)

Create Policy

This interface is used to create an Auto-Scaling Policy with parameters.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')

attrs = {
    "scaling_group_id": "as_group_id",
    "scaling_policy_name": "as_policy_name",
    "scaling_policy_type": "ALARM",
    "alarm_id": "cloudeye_alarm_id",
    "scheduled_policy": {},
    "cool_down_time": 300,
    "scaling_policy_action": {
        "operation": "ADD",
        "instance_number": 1
    }
}

policy = conn.auto_scaling.create_policy(**attrs)
print(policy)

Get Policy

This interface is used to get an Auto-Scaling Policy by ID or an instance of class Policy.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


policy_id = "1234567-6aa0-4c8b-b350-3bd937addeb7"
policy = conn.auto_scaling.get_policy(policy_id)
print(policy)

Find Policy

This interface is used to find an Auto-Scaling Policy instance by name or id.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')

policy = "policy_name_or_id"

policy = conn.auto_scaling.find_policy(policy)
print(policy)

Delete Policy

This interface is used to delete an Auto-Scaling Policy instance by id or an instance of class Policy.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


policy_id = '1234567-ad7a-48ce-8f92-b55c651439d2'
conn.auto_scaling.delete_policy(policy_id)

Update Policy

This interface is used to update an Auto-Scaling Policy instance by using policy’s id or an instance of class Policy and provide new attributes.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


policy = "policy_name_or_id"
attrs = {
    "scaling_policy_type": "RECURRENCE",
    "scaling_policy_name": "policy_01",
    "scheduled_policy": {
        "launch_time": "16:00",
        "recurrence_type": "Daily",
        "end_time": "2016-02-08T17:31Z",
        "start_time": "2016-01-08T17:31Z"
    },
    "scaling_policy_action": {
        "operation": "SET",
        "instance_number": 2
    }
}

policy = conn.auto_scaling.find_policy(policy)
conn.auto_scaling.update_policy(policy, **attrs)

Pause Policy

This interface is used to pause an Auto-Scaling Policy instance in passive state by using id or an instance of class Policy.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


policy = "policy_name_or_id"
policy = conn.auto_scaling.find_policy(policy)

conn.auto_scaling.pause_policy(policy)

Resume Policy

This interface is used to resume an Auto-Scaling Policy instance in active state by using id or an instance of class Policy.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


policy = "policy_name_or_id"
policy = conn.auto_scaling.find_policy(policy)

conn.auto_scaling.resume_policy(policy)

Execute Policy

This interface is used to execute an Auto-Scaling Policy instance and run the defined actions.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


policy = "policy_name_or_id"
policy = conn.auto_scaling.find_policy(policy)

conn.auto_scaling.execute_policy(policy)

Auto-Scaling Instance

An Auto-Scaling (AS) Instance is the executive unit of an Auto-Scaling group.

List Instances

This interface is used to query all Auto-Scaling Instances of an AS group and to filter the output with query parameters.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')

group = "group_name_or_id"
group = conn.auto_scaling.find_group(group)

for activity in conn.auto_scaling.activities(group):
    print(activity)

Remove Instance

This interface is used to remove an Auto-Scaling Instances of an AS group.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')

instance = "instance_id"

conn.auto_scaling.remove_instance(
    instance,
    delete=False  # If True, instance will be deleted after remove
)

Batch Action Instance

This interface is used to run actions on an Auto-Scaling group by adding or deleting instance.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


group = "group_name_or_id"
group = conn.auto_scaling.find_group(group)

instances = [
    "instance_id",
    "instance_id2"
]

action = "ADD"

conn.auto_scaling.batch_instance_action(
    group,
    instances,
    action,  # ADD, REMOVE, PROTECT, UNPROTECT
    delete_instance=False
)

Auto-Scaling Actions and Quotas

Auto-Scaling quotas and query scaling action logs can be querried.

List Scaling Actions

This interface is used to query all Auto-Scaling scaling action logs of an AS group and to filter the output with query parameters.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


group = "group_name_or_id"
group = conn.auto_scaling.find_group(group)


for activity in conn.auto_scaling.activities(group):
    print(activity)

List User or Group Quota for Auto-Scaling

This interface is used to query all Auto-Scaling quotas of an AS group or a user and to filter the output with query parameters.

import openstack

openstack.enable_logging(True)
conn = openstack.connect(cloud='otc')


# group = "group_name_or_id"
# group = conn.auto_scaling.find_group(group)

# If group is set, group quotas ar listed instead of user quotas
for quota in conn.auto_scaling.quotas(group=None):
    print(quota)

last updated: 2023-08-18 10:18