jolexa/mado repository overview
mado
mado is: Marathon Autoscaling Docker Oneshot, an attempt to autoscale your marathon apps
Vision
The vision is to have a Docker image that will run once to autoscale marathon applications.
I envision multiple backends that will be used. The actual scale up and down is a stable interface that should only change if upstream changes API spec.
Backend Support:
| Backend | Status | Environment Token Name |
|---|---|---|
| LogicMonitor | Supported | logicmonitor |
| AWS CloudWatch | Supported | cloudwatch |
| Others? | ??? |
Running
It should be very easy to run this wherever marathon.mesos resolves to the correct address (requires mesos-dns somewhere). Docker is used to provide a simple interface to run (though, it isn't too complicated if you choose to decompose it)
There are many environment variables in lieu of a config file or parameters to make this as re-usable as possible. They get passed to the Docker runtime. Backend specific variables have a common prefix and can be omitted it not used.
Common:
| Variable | Description |
|---|---|
| BACKEND_SERVICE | Supporting Services for polling. See key above for support |
| THRESHOLD | Threshold to take action |
| SCALE_UP_PERCENT | (int) Percentage to scale the MARATHON_APP_GROUP |
| SCALE_DOWN_PERCENT | (int) Percentage to scale the MARATHON_APP_GROUP |
| SCALE_FLOOR | (int) (Optional) Lowest desired number of instances in a group |
| SCALE_CEILING | (int) (Optional) Highest desired number of instances in a group |
| MARATHON_APP_GROUP | Group of apps to scale |
LogicMonitor:
| Variable | Description |
|---|---|
| LM_COMPANY | LogicMonitor Company |
| LM_USER | LogicMonitor User |
| LM_PASS | LogicMonitor Pass |
| LM_DATASOURCE | LogicMonitor Datasource |
| LM_DATAPOINT | LogicMonitor Datapoint |
| LM_HOST | LogicMonitor Host where datasource is applied |
CloudWatch:
| Variable | Description |
|---|---|
| CW_NAMESPACE | Namespace, allowed values here |
| CW_METRIC | Metric Name |
| CW_DIMENSION_NAME | Dimension Name |
| CW_DIMENSION_VALUE | Dimension Value |
| CW_AGGREGATION_TYPE | Aggregation Type, Supported: "Maximum" or "Average" |
Contibutors and Contributions
See contributors
Standard, fork, PR, merge
Feedback welcome and desired!
Tag summary
Content type
Image
Digest
Size
263.8 MB
Last updated
over 10 years ago
docker pull jolexa/mado