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Change the default Pod CIDR to 10.20.0.0/14

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* Change the default Pod CIDR from 10.2.0.0/16 to 10.20.0.0/14
(10.20.0.0 - 10.23.255.255) to support 1024 nodes by default
* Most CNI providers divide the Pod CIDR so that each node has
a /24 to allocate to local pods (256). The previous `10.2.0.0/16`
default only fits 256 /24's so 256 nodes were supported without
customizing the pod_cidr
This commit is contained in:
Dalton Hubble
2024-12-23 09:55:40 -08:00
parent 84eab93108
commit 44fc53e8db
22 changed files with 22 additions and 22 deletions
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2
docs/fedora-coreos/aws.md
View File

@@ -227,7 +227,7 @@ Reference the DNS zone id with `aws_route53_zone.zone-for-clusters.zone_id`.
| networking | Choice of networking provider | "cilium" | "calico" or "cilium" or "flannel" |
| network_mtu | CNI interface MTU (calico only) | 1480 | 8981 |
| host_cidr | CIDR IPv4 range to assign to EC2 instances | "10.0.0.0/16" | "10.1.0.0/16" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.2.0.0/16" | "10.22.0.0/16" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.20.0.0/14" | "10.22.0.0/16" |
| service_cidr | CIDR IPv4 range to assign to Kubernetes services | "10.3.0.0/16" | "10.3.0.0/24" |
| worker_node_labels | List of initial worker node labels | [] | ["worker-pool=default"] |

2
docs/fedora-coreos/azure.md
View File

@@ -254,7 +254,7 @@ Reference the DNS zone with `azurerm_dns_zone.clusters.name` and its resource gr
| worker_snippets | Worker Butane snippets | [] | [example](/advanced/customization/#usage) |
| networking | Choice of networking provider | "cilium" | "calico" or "cilium" or "flannel" |
| network_cidr | Virtual network CIDR ranges | { ipv4 = ["10.0.0.0/16"], ipv6 = [ULA, ...] } | { ipv4 = ["10.0.0.0/20"] } |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.2.0.0/16" | "10.22.0.0/16" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.20.0.0/14" | "10.22.0.0/16" |
| service_cidr | CIDR IPv4 range to assign to Kubernetes services | "10.3.0.0/16" | "10.3.0.0/24" |
| worker_node_labels | List of initial worker node labels | [] | ["worker-pool=default"] |

2
docs/fedora-coreos/bare-metal.md
View File

@@ -369,7 +369,7 @@ Check the [variables.tf](https://github.com/poseidon/typhoon/blob/master/bare-me
| network_mtu | CNI interface MTU (calico-only) | 1480 | - |
| snippets | Map from machine names to lists of Butane snippets | {} | [examples](/advanced/customization/) |
| network_ip_autodetection_method | Method to detect host IPv4 address (calico-only) | "first-found" | "can-reach=10.0.0.1" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.2.0.0/16" | "10.22.0.0/16" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.20.0.0/14" | "10.22.0.0/16" |
| service_cidr | CIDR IPv4 range to assign to Kubernetes services | "10.3.0.0/16" | "10.3.0.0/24" |
| kernel_args | Additional kernel args to provide at PXE boot | [] | ["kvm-intel.nested=1"] |
| worker_node_labels | Map from worker name to list of initial node labels | {} | {"node2" = ["role=special"]} |

2
docs/fedora-coreos/digitalocean.md
View File

@@ -242,7 +242,7 @@ Digital Ocean requires the SSH public key be uploaded to your account, so you ma
| controller_snippets | Controller Butane snippets | [] | [example](/advanced/customization/) |
| worker_snippets | Worker Butane snippets | [] | [example](/advanced/customization/) |
| networking | Choice of networking provider | "cilium" | "calico" or "cilium" or "flannel" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.2.0.0/16" | "10.22.0.0/16" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.20.0.0/14" | "10.22.0.0/16" |
| service_cidr | CIDR IPv4 range to assign to Kubernetes services | "10.3.0.0/16" | "10.3.0.0/24" |
Check the list of valid [droplet types](https://developers.digitalocean.com/documentation/changelog/api-v2/new-size-slugs-for-droplet-plan-changes/) or use `doctl compute size list`.

2
docs/fedora-coreos/google-cloud.md
View File

@@ -225,7 +225,7 @@ resource "google_dns_managed_zone" "zone-for-clusters" {
| controller_snippets | Controller Butane snippets | [] | [examples](/advanced/customization/) |
| worker_snippets | Worker Butane snippets | [] | [examples](/advanced/customization/) |
| networking | Choice of networking provider | "cilium" | "calico" or "cilium" or "flannel" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.2.0.0/16" | "10.22.0.0/16" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.20.0.0/14" | "10.22.0.0/16" |
| service_cidr | CIDR IPv4 range to assign to Kubernetes services | "10.3.0.0/16" | "10.3.0.0/24" |
| worker_node_labels | List of initial worker node labels | [] | ["worker-pool=default"] |

2
docs/flatcar-linux/aws.md
View File

@@ -225,7 +225,7 @@ Reference the DNS zone id with `aws_route53_zone.zone-for-clusters.zone_id`.
| networking | Choice of networking provider | "cilium" | "calico" or "cilium" or "flannel" |
| network_mtu | CNI interface MTU (calico only) | 1480 | 8981 |
| host_cidr | CIDR IPv4 range to assign to EC2 instances | "10.0.0.0/16" | "10.1.0.0/16" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.2.0.0/16" | "10.22.0.0/16" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.20.0.0/14" | "10.22.0.0/16" |
| service_cidr | CIDR IPv4 range to assign to Kubernetes services | "10.3.0.0/16" | "10.3.0.0/24" |
| worker_node_labels | List of initial worker node labels | [] | ["worker-pool=default"] |

2
docs/flatcar-linux/azure.md
View File

@@ -242,7 +242,7 @@ Reference the DNS zone with `azurerm_dns_zone.clusters.name` and its resource gr
| worker_snippets | Worker Container Linux Config snippets | [] | [example](/advanced/customization/#usage) |
| networking | Choice of networking provider | "cilium" | "calico" or "cilium" or "flannel" |
| network_cidr | Virtual network CIDR ranges | { ipv4 = ["10.0.0.0/16"], ipv6 = [ULA, ...] } | { ipv4 = ["10.0.0.0/20"] } |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.2.0.0/16" | "10.22.0.0/16" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.20.0.0/14" | "10.22.0.0/16" |
| service_cidr | CIDR IPv4 range to assign to Kubernetes services | "10.3.0.0/16" | "10.3.0.0/24" |
| worker_node_labels | List of initial worker node labels | [] | ["worker-pool=default"] |

2
docs/flatcar-linux/bare-metal.md
View File

@@ -380,7 +380,7 @@ Check the [variables.tf](https://github.com/poseidon/typhoon/blob/master/bare-me
| network_mtu | CNI interface MTU (calico-only) | 1480 | - |
| snippets | Map from machine names to lists of Container Linux Config snippets | {} | [examples](/advanced/customization/) |
| network_ip_autodetection_method | Method to detect host IPv4 address (calico-only) | "first-found" | "can-reach=10.0.0.1" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.2.0.0/16" | "10.22.0.0/16" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.20.0.0/14" | "10.22.0.0/16" |
| service_cidr | CIDR IPv4 range to assign to Kubernetes services | "10.3.0.0/16" | "10.3.0.0/24" |
| kernel_args | Additional kernel args to provide at PXE boot | [] | ["kvm-intel.nested=1"] |
| worker_node_labels | Map from worker name to list of initial node labels | {} | {"node2" = ["role=special"]} |

2
docs/flatcar-linux/digitalocean.md
View File

@@ -242,7 +242,7 @@ Digital Ocean requires the SSH public key be uploaded to your account, so you ma
| controller_snippets | Controller Container Linux Config snippets | [] | [example](/advanced/customization/) |
| worker_snippets | Worker Container Linux Config snippets | [] | [example](/advanced/customization/) |
| networking | Choice of networking provider | "cilium" | "calico" or "cilium" or "flannel" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.2.0.0/16" | "10.22.0.0/16" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.20.0.0/14" | "10.22.0.0/16" |
| service_cidr | CIDR IPv4 range to assign to Kubernetes services | "10.3.0.0/16" | "10.3.0.0/24" |
Check the list of valid [droplet types](https://developers.digitalocean.com/documentation/changelog/api-v2/new-size-slugs-for-droplet-plan-changes/) or use `doctl compute size list`.

2
docs/flatcar-linux/google-cloud.md
View File

@@ -223,7 +223,7 @@ resource "google_dns_managed_zone" "zone-for-clusters" {
| controller_snippets | Controller Container Linux Config snippets | [] | [example](/advanced/customization/) |
| worker_snippets | Worker Container Linux Config snippets | [] | [example](/advanced/customization/) |
| networking | Choice of networking provider | "cilium" | "calico" or "cilium" or "flannel" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.2.0.0/16" | "10.22.0.0/16" |
| pod_cidr | CIDR IPv4 range to assign to Kubernetes pods | "10.20.0.0/14" | "10.22.0.0/16" |
| service_cidr | CIDR IPv4 range to assign to Kubernetes services | "10.3.0.0/16" | "10.3.0.0/24" |
| worker_node_labels | List of initial worker node labels | [] | ["worker-pool=default"] |