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Upgrade Calico v3.9.2 to v3.10.0
* Allow advertising Kubernetes service ClusterIPs to BGPPeer routers via a BGPConfiguration * Improve EdgeRouter docs about routes and BGP * https://docs.projectcalico.org/v3.10/release-notes/ * https://docs.projectcalico.org/v3.10/networking/advertise-service-ips
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Dalton Hubble
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@ -4,6 +4,8 @@ Notable changes between versions.
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## Latest
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* Upgrade Calico from v3.9.2 to [v3.10.0](https://docs.projectcalico.org/v3.10/release-notes/)
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* Allow advertising service ClusterIPs to peer routers via a [BGPConfiguration](https://docs.projectcalico.org/v3.10/networking/advertise-service-ips)
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* Switch `kube-proxy` from iptables to ipvs mode ([#574](https://github.com/poseidon/typhoon/pull/574))
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#### Addons
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@ -1,6 +1,6 @@
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# Kubernetes assets (kubeconfig, manifests)
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module "bootstrap" {
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=e09d6bef33693455ee77b9e6b6882dc7d35c523c"
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=3c7334ab55b4ebef4109072da99452d59ee6179a"
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cluster_name = var.cluster_name
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api_servers = [format("%s.%s", var.cluster_name, var.dns_zone)]
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@ -1,6 +1,6 @@
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# Kubernetes assets (kubeconfig, manifests)
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module "bootstrap" {
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=e09d6bef33693455ee77b9e6b6882dc7d35c523c"
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=3c7334ab55b4ebef4109072da99452d59ee6179a"
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cluster_name = var.cluster_name
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api_servers = [format("%s.%s", var.cluster_name, var.dns_zone)]
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@ -1,6 +1,6 @@
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# Kubernetes assets (kubeconfig, manifests)
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module "bootstrap" {
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=e09d6bef33693455ee77b9e6b6882dc7d35c523c"
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=3c7334ab55b4ebef4109072da99452d59ee6179a"
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cluster_name = var.cluster_name
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api_servers = [format("%s.%s", var.cluster_name, var.dns_zone)]
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@ -1,6 +1,6 @@
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# Kubernetes assets (kubeconfig, manifests)
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module "bootstrap" {
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=e09d6bef33693455ee77b9e6b6882dc7d35c523c"
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=3c7334ab55b4ebef4109072da99452d59ee6179a"
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cluster_name = var.cluster_name
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api_servers = [var.k8s_domain_name]
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@ -1,6 +1,6 @@
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# Kubernetes assets (kubeconfig, manifests)
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module "bootstrap" {
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=e09d6bef33693455ee77b9e6b6882dc7d35c523c"
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=3c7334ab55b4ebef4109072da99452d59ee6179a"
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cluster_name = var.cluster_name
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api_servers = [var.k8s_domain_name]
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@ -1,6 +1,6 @@
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# Kubernetes assets (kubeconfig, manifests)
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module "bootstrap" {
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=e09d6bef33693455ee77b9e6b6882dc7d35c523c"
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=3c7334ab55b4ebef4109072da99452d59ee6179a"
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cluster_name = var.cluster_name
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api_servers = [format("%s.%s", var.cluster_name, var.dns_zone)]
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@ -6,6 +6,39 @@ Typhoon ensures certain networking hardware integrates well with bare-metal Kube
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Ubiquiti EdgeRouters and EdgeOS work well with bare-metal Kubernetes clusters. Familiarity with EdgeRouter setup and CLI usage is required.
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### DHCP
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Assign static IPs to clients with known MAC addresses. This is called a static mapping by EdgeOS. Configure the router with the commands based on region inventory.
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```
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configure
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show service dhcp-server shared-network
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set service dhcp-server shared-network-name LAN subnet SUBNET static-mapping NAME mac-address MACADDR
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set service dhcp-server shared-network-name LAN subnet SUBNET static-mapping NAME ip-address 10.0.0.20
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```
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### DNS
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Add DNS A records to static IPs as `dnsmasq` host-records.
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```
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configure
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set service dns forwarding options host-record=node.example.com,10.0.0.20
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```
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Forward `*.svc.cluster.local` queries to the CoreDNS Kubernetes service IP to allow clients to resolve Kubernetes services.
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```
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set service dns forwarding options server=/svc.cluster.local/10.3.0.10
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commit-confirm
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```
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Restart `dnsmasq`.
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```
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sudo /etc/init.d/dnsmasq restart
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```
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### PXE
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Ubiquiti EdgeRouters can provide a PXE-enabled network boot environment for client machines.
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@ -65,55 +98,88 @@ set service dns forwarding options tftp-root=/config/tftpboot
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commit-confirm
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```
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### DHCP
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### Routing
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Assign static IPs to clients with known MAC addresses. This is called a static mapping by EdgeOS. Configure the router with the commands based on region inventory.
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#### Static Routes
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```
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configure
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show service dhcp-server shared-network
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set service dhcp-server shared-network-name LAN subnet SUBNET static-mapping NAME mac-address MACADDR
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set service dhcp-server shared-network-name LAN subnet SUBNET static-mapping NAME ip-address 10.0.0.20
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```
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### DNS
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Assign DNS A records to nodes as options to `dnsmasq`.
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```
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configure
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set service dns forwarding options host-record=node.example.com,10.0.0.20
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```
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Restart `dnsmasq`.
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```
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sudo /etc/init.d/dnsmasq restart
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```
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Configure queries for `*.svc.cluster.local` to be forwarded to the Kubernetes `coredns` service IP to allow hosts to resolve cluster-local Kubernetes names.
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```
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configure
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show service dns forwarding
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set service dns forwarding options server=/svc.cluster.local/10.3.0.10
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commit-confirm
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```
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### Kubernetes Services
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Add static routes for the Kubernetes IPv4 service range to Kubernetes node(s) so hosts can route to Kubernetes services (default: 10.3.0.0/16).
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Add static route(s) to Kubernetes node(s) that can route to Kubernetes service IPs (default: 10.3.0.0/16). Kubernetes service IPs will become routeable on the LAN.
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```
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configure
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show protocols static route
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set protocols static route 10.3.0.0/16 next-hop NODE_IP
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...
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commit-confirm
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```
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!!! note
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Adding multiple next-hop nodes provides equal-cost multi-path (ECMP) routing. EdgeOS v2.0+ is required. The kernel in prior versions used flow-hash to balanced packets, whereas with v2.0, round-robin sessions are used.
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Adding multiple next-hop nodes provides equal-cost multi-path (ECMP) routing. EdgeOS v2.0+ is required. The kernel in prior versions used flow-hash to balanced packets, whereas with v2.0, round-robin sessions are used.
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#### BGP
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EdgeRouter can exchange routes with other autonomous systems, including a cluster's Calico AS. Peers will exchange `podCIDR` routes to make individual pods routeable on the LAN.
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Define the EdgeRouter AS (if undefined).
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```
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configure
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show protocols bgp 1
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set protocols bgp 1 parameters router-id ROUTER_IP
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```
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Peer with node(s) in another AS (eg. Calico default 64512)
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```
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set protocols bgp 1 neighbor NODE1_IP remote-as 64512
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set protocols bgp 1 neighbor NODE2_IP remote-as 64512
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set protocols bgp 1 neighbor NODE3_IP remote-as 64512
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commit-confirm
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```
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Configure Calico node(s) as to peer with the EdgeRouter.
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```
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apiVersion: crd.projectcalico.org/v1
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kind: BGPPeer
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metadata:
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name: NODE_NAME-to-edgerouter
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spec:
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peerIP: ROUTER_IP
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asNumber: 1
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node: NODE_NAME
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```
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Or, if every node is to be peered (i.e. full mesh), define a global BGPPeer.
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```
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apiVersion: crd.projectcalico.org/v1
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kind: BGPPeer
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metadata:
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name: global
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spec:
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peerIP: ROUTER_IP
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asNumber: 1
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```
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If Calico nodes should advertise Kubernetes Service IPs (i.e. ClusterIPs) as well, add a `BGPConfiguration`.
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```
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apiVersion: crd.projectcalico.org/v1
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kind: BGPConfiguration
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metadata:
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name: default
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spec:
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logSeverityScreen: Info
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nodeToNodeMeshEnabled: true
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serviceClusterIPs:
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- cidr: 10.3.0.0/16
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```
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Show a summary of peers and exchanged routes.
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```
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show ip bgp summary
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show ip route bgp
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```
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### Port Forwarding
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@ -150,35 +216,3 @@ set service gui https-port 4443
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commit-confirm
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```
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### BGP
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Add the EdgeRouter as a global BGP peer for nodes in a Kubernetes cluster (requires Calico). Neighbors will exchange `podCIDR` routes and individual pods will become routable on the LAN.
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Configure node(s) as BGP neighbors.
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```
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show protocols bgp 1
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set protocols bgp 1 parameters router-id LAN_IP
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set protocols bgp 1 neighbor NODE1_IP remote-as 64512
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set protocols bgp 1 neighbor NODE2_IP remote-as 64512
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set protocols bgp 1 neighbor NODE3_IP remote-as 64512
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```
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View the neighbors and exchanged routes.
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```
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show ip bgp neighbors
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show ip route bgp
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```
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Be sure to register the peer by creating a Calico `BGPPeer` CRD with `kubectl apply`.
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```
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apiVersion: crd.projectcalico.org/v1
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kind: BGPPeer
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metadata:
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name: NAME
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spec:
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peerIP: LAN_IP
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asNumber: 64512
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```
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@ -1,6 +1,6 @@
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# Kubernetes assets (kubeconfig, manifests)
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module "bootstrap" {
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=e09d6bef33693455ee77b9e6b6882dc7d35c523c"
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source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=3c7334ab55b4ebef4109072da99452d59ee6179a"
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cluster_name = var.cluster_name
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api_servers = [format("%s.%s", var.cluster_name, var.dns_zone)]
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