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Add db sizing guide

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galal-hussein
2020-03-24 22:17:25 +02:00
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content/k3s/latest/en/installation/installation-requirements/_index.md
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@@ -67,3 +67,16 @@ The cluster performance depends on database performance. To ensure optimal speed
### Network ### Network
You should consider increasing the subnet size for the cluster CIDR so that you don't run out of IPs for the pods. You can do that by passing the `--cluster-cidr` option to K3s server upon starting. You should consider increasing the subnet size for the cluster CIDR so that you don't run out of IPs for the pods. You can do that by passing the `--cluster-cidr` option to K3s server upon starting.
### Database
K3s supports different databases including MySQL, PostgreSQL, MariaDB, and etcd, the following is a sizing guide for the database resources you need to run large clusters:
| Deployment Size | Nodes | VCPUS | RAM |
|:---------------:|:---------:|:-----:|:-----:|
| Small | Up to 10 | 1 | 2 GB |
| Medium | Up to 100 | 2 | 8 GB |
| Large | Up to 250 | 4 | 16 GB |
| X-Large | Up to 500 | 8 | 32 GB |
| XX-Large | 500+ | 16 | 64 GB |