mirror of https://github.com/k3s-io/k3s
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
117 lines
5.3 KiB
117 lines
5.3 KiB
## K3S Performance Tests
|
|
---
|
|
|
|
These scripts uses Terraform to automate building and testing on k3s clusters on AWS, it supports building normal and HA clusters with N master nodes, N workers nodes and multiple storage backends including:
|
|
|
|
- MySQL RDS
|
|
- Postgres RDS
|
|
- Etcd
|
|
- SQlite
|
|
|
|
The scripts divides into three sections:
|
|
|
|
- server
|
|
- agents
|
|
- tests
|
|
|
|
### Server
|
|
|
|
The server section deploys the storage backend and then deploys N master nodes, the scripts can be customized to use HA mode or use a single node cluster with sqlite backend, it can also support using 1 master node with external DB, the scripts can also be customized to specify instance type and k3s version, all available options are described in the variable section below.
|
|
|
|
The server section will also create a one or more agent nodes specifically for Prometheus deployment, clusterloader2 will deploy prometheus and grafana.
|
|
|
|
### Agents
|
|
|
|
The agents section deploys the k3s agents, it can be customized with different options that controls the agent node count and the instance types.
|
|
|
|
### Tests
|
|
|
|
The tests section uses a fork off the (clusterloader2)[https://github.com/kubernetes/perf-tests/tree/master/clusterloader2] tool, the fork just modifies the logging and removes the etcd metrics probes.
|
|
|
|
this section will use a dockerized version of the tool, which will run the tests and save the report in `tests/<test_name>-<random-number>`.
|
|
|
|
The current available tests are:
|
|
|
|
- load test
|
|
- density test
|
|
|
|
## Variables
|
|
|
|
The scripts can be modified by customizing the variables in `scripts/config`, the variables includes:
|
|
|
|
**Main Vars**
|
|
|
|
| Name | Description |
|
|
|:----------------:|:------------------------------------------------------------------------------:|
|
|
| CLUSTER_NAME | The cluster name on aws, this will prefix each component in the cluster |
|
|
| DOMAIN_NAME | DNS name of the Loadbalancer for k3s master(s) |
|
|
| ZONE_ID | AWS route53 zone id for modifying the dns name |
|
|
| K3S_VERSION | K3S version that will be used with the cluster |
|
|
| EXTRA_SSH_KEYS | Public ssh keys that will be added to the servers |
|
|
| PRIVATE_KEY_PATH | Private ssh key that will be used by clusterloader2 to ssh and collect metrics |
|
|
| DEBUG | Debug mode for k3s servers |
|
|
|
|
**Database Variables**
|
|
|
|
| Name | Description |
|
|
|:----------------:|:---------------------------------------------------------------------------------------------------:|
|
|
| DB_ENGINE | The database type, this can be "mysql", "postgres", or "etcd" |
|
|
| DB_INSTANCE_TYPE | The RDS instance type for mysql and postgres, etcd uses db.* class as well as its parsed internally |
|
|
| DB_NAME | Database name created only in postgres and mysql |
|
|
| DB_USERNAME | Database username created only for postgres and mysql |
|
|
| DB_PASSWORD | Database password for the user created only for postgres and mysql |
|
|
| DB_VERSION | Database version |
|
|
|
|
**K3S Server Variables**
|
|
|
|
| Name | Description |
|
|
|:--------------------:|:---------------------------------------------------------------------------------:|
|
|
| SERVER_HA | Whether or not to use HA mode, if not then sqlite will be used as storage backend |
|
|
| SERVER_COUNT | k3s master node count |
|
|
| SERVER_INSTANCE_TYPE | Ec2 instance type created for k3s server(s) |
|
|
|
|
**K3S Agent Variables**
|
|
|
|
| Name | Description |
|
|
|:-------------------:|:-----------------------------------------:|
|
|
| AGENT_NODE_COUNT | Number of k3s agents that will be created |
|
|
| AGENT_INSTANCE_TYPE | Ec2 instance type created for k3s agents |
|
|
|
|
**Prometheus server Variables**
|
|
|
|
| Name | Description |
|
|
|:-------------------------:|:-------------------------------------------------------------------:|
|
|
| PROM_WORKER_NODE_COUNT | Number of k3s agents that will be created for prometheus deployment |
|
|
| PROM_WORKER_INSTANCE_TYPE | Ec2 instance type created for k3s prometheus agents |
|
|
|
|
|
|
## Usage
|
|
|
|
### build
|
|
|
|
The script includes a Makefile that run different sections, to build the master and workers, adjust the config file in `tests/perf/scripts/config` and then use the following:
|
|
|
|
```
|
|
cd tests/perf
|
|
make apply
|
|
```
|
|
|
|
This will basically build the db, server, and agent layers, it will also deploy a kubeconfig file in tests/kubeconfig.yaml.
|
|
|
|
### test
|
|
|
|
To start the clusterloader2 load test you can modify the tests/perf/tests/load/config.yaml and then run the following:
|
|
|
|
```
|
|
cd tests/perf
|
|
make test
|
|
```
|
|
|
|
### destroy
|
|
|
|
To destroy the cluster just run the following:
|
|
```
|
|
make destroy
|
|
make clean
|
|
```
|