For managing gateway instances on Kubernetes, Kong Mesh provides a
MeshGatewayInstance CRD.
This resource launches kuma-dp in your cluster.
If you are running a multi-zone Kong Mesh, MeshGatewayInstance needs to be created in a specific zone, not the global cluster.
See the dedicated section for using built-in gateways on
multi-zone.
This resource manages a Kubernetes Deployment and Service
suitable for providing service capacity for the MeshGateway with the matching kuma.io/service tag.
The kuma.io/service value you select will be used in MeshGateway to configure listeners.
apiVersion: kuma.io/v1alpha1
kind: MeshGatewayInstance
metadata:
name: edge-gateway
namespace: default
spec:
replicas: 1
serviceType: LoadBalancer
tags:
kuma.io/service: edge-gateway
See the MeshGatewayInstance docs for more options.
You’ll need to create a Dataplane object for your gateway:
type: Dataplane
mesh: default
name: gateway-instance-1
networking:
address: 127.0.0.1
gateway:
type: BUILTIN
tags:
kuma.io/service: edge-gateway
Note that this gateway has an identifying kuma.io/service tag.
Now you need to explicitly run kuma-dp:
kuma-dp run \
--cp-address=https://localhost:5678/ \
--dns-enabled=false \
--dataplane-token-file=kuma-token-gateway \ # this needs to be generated like for regular Dataplane
--dataplane-file=my-gateway.yaml # the Dataplane resource described above
Using MeshGatewayInstance is highly recommended. If for any reason you are
unable to use MeshGatewayInstance to deploy builtin gateways, you can manually create a Deployment and Service
to manage kuma-dp instances and forward traffic to them.
Keep in mind however, that you’ll need to keep the listeners of your
MeshGateway in sync with your Service.
These instructions will use the resources created by MeshGatewayInstance with
version 2.6.2 as a
guide but remember to create a MeshGatewayInstance for your version to configure as
much as you can and use it as a basis for these self-managed resources.
Given a MeshGateway spec:
spec:
conf:
listeners:
- port: 80
protocol: HTTP
selectors:
- match:
kuma.io/service: demo-app_gateway
Service
The Service will forward traffic to the kuma-dp we’ll configure in the next
section. Its ports need to be in sync with the MeshGateway listeners.
metadata:
annotations:
kuma.io/gateway: builtin
name: demo-app-gateway
namespace: kuma-demo
spec:
ports:
- name: "80"
port: 80
protocol: TCP
targetPort: 80
selector:
app: demo-app-gateway
The selector should match the Pod template created in the next section.
Deployment
The Deployment we’ll create will manage running some number of kuma-dp
instances that are configured to serve traffic for your MeshGateway.
We’ll cover just spec.selector and spec.template here because
other parts of the Deployment can be configured arbitrarily.
Most importantly you’ll need to change:
-
kuma.io/tags annotation - must match the MeshGateway selectors
-
KUMA_CONTROL_PLANE_CA_CERT environment variable - can be retrieved with kubectl get secret -tls-cert -n kong-mesh-system -o=jsonpath='{.data.ca\.crt}' | base64 -d
-
containers[0].image field - should be the version of Kong Mesh you’re using
Make sure containers[0].resources is appropriate for your use case.
selector:
matchLabels:
app: demo-app-gateway
template:
metadata:
annotations:
kuma.io/gateway: builtin
kuma.io/mesh: default
kuma.io/tags: '{"kuma.io/service":"demo-app_gateway"}'
creationTimestamp: null
labels:
app: demo-app-gateway
kuma.io/sidecar-injection: disabled
spec:
containers:
- args:
- run
- --log-level=info
- --concurrency=2
env:
- name: INSTANCE_IP
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: status.podIP
- name: KUMA_CONTROL_PLANE_CA_CERT
value: |
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
- name: KUMA_CONTROL_PLANE_URL
value: https://kong-mesh-control-plane.kong-mesh-system:5678
- name: KUMA_DATAPLANE_DRAIN_TIME
value: 30s
- name: KUMA_DATAPLANE_MESH
value: default
- name: KUMA_DATAPLANE_RUNTIME_TOKEN_PATH
value: /var/run/secrets/kubernetes.io/serviceaccount/token
- name: KUMA_DNS_CORE_DNS_BINARY_PATH
value: coredns
- name: KUMA_DNS_CORE_DNS_EMPTY_PORT
value: "15054"
- name: KUMA_DNS_CORE_DNS_PORT
value: "15053"
- name: KUMA_DNS_ENABLED
value: "true"
- name: KUMA_DNS_ENABLE_LOGGING
value: "false"
- name: KUMA_DNS_ENVOY_DNS_PORT
value: "15055"
- name: POD_NAME
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: metadata.name
- name: POD_NAMESPACE
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: metadata.namespace
- name: KUMA_DATAPLANE_RESOURCES_MAX_MEMORY_BYTES
valueFrom:
resourceFieldRef:
containerName: kuma-gateway
divisor: "0"
resource: limits.memory
image: docker.io//kuma-dp:2.6.2
livenessProbe:
failureThreshold: 12
httpGet:
path: /ready
port: 9901
scheme: HTTP
initialDelaySeconds: 60
periodSeconds: 5
successThreshold: 1
timeoutSeconds: 3
name: kuma-gateway
readinessProbe:
failureThreshold: 12
httpGet:
path: /ready
port: 9901
scheme: HTTP
initialDelaySeconds: 1
periodSeconds: 5
successThreshold: 1
timeoutSeconds: 3
resources:
limits:
cpu: "1"
ephemeral-storage: 1G
memory: 512Mi
requests:
cpu: 50m
ephemeral-storage: 50M
memory: 64Mi
securityContext:
allowPrivilegeEscalation: false
runAsGroup: 5678
runAsUser: 5678
volumeMounts:
- mountPath: /tmp
name: tmp
securityContext:
sysctls:
- name: net.ipv4.ip_unprivileged_port_start
value: "0"
volumes:
- emptyDir: {}
name: tmp
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