Uses the rackspace APIs to allow for scaling based on aggregate metrics across a cluster. Can be used and installed on the auto-scale group members or on a dedicated management instance.
pip install rax-autoscaler
V0.3 is a major change from 0.2 and as such there are many breaking changes in the configuration file. Here is what you need to fix to upgrade successfully.
The monitoring information is now a plugin and needs to be moved to the plugin section. The only monitoring plugin available in 0.2 was raxmon so you should specify the raxmon plugin and just move the check_type, check_config, metric_name, thresholds down.
"autoscale_groups": {
"group0": {
"group_id": "group id",
"scale_up_policy": "scale up policy id",
"scale_down_policy": "scale down policy id",
"check_type": "agent.load_average",
"check_config": {},
"metric_name": "1m",
"scale_up_threshold": 0.6,
"scale_down_threshold": 0.4,
"webhooks": {
"scale_up": {
"pre": [
"url",
"url"
],
"post": [
"url"
]
},
"scale_down": {
"pre": [
"url",
"url"
],
"post": [
"url"
]
}
}
}
}
"autoscale_groups": {
"group0": {
"group_id": "704a2260-f4b9-46a9-be83-dbfb19919ee0",
"scale_up_policy": "74588ebe-7ca7-4950-9b86-e622a11295b6",
"scale_down_policy": "b22f4fce-132f-40af-b8c6-0e22704b1241",
"webhooks": {
"scale_up": {
"pre": [
"url",
"url"
],
"post": [
"url"
]
},
"scale_down": {
"pre": [
"url",
"url"
],
"post": [
"url"
]
}
},
"plugins":{
"raxmon":{
"scale_up_threshold": 0.6,
"scale_down_threshold": 0.4,
"check_type": "agent.load_average",
"load_balancers": [17443]
}
}
}
}
- Fork rax-autoscaler repository, and clone it on your laptop
- Create your feature branch from devel branch:
git checkout -b my-new-feature origin/devel - Commit, comment, push to your fork on GitHub, and create new Pull Request
You might want to install pip packages in your Python virtualenv:
pip install -r requirements-dev.txt
Copyright 2014 Rackspace US, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.