提交 ffcb14a6 编写于 作者: T Thomas Stromberg

Add support for Cilium CNI (--cni=cilium)

上级 7fb09bb6
......@@ -134,7 +134,7 @@ func initMinikubeFlags() {
startCmd.Flags().String(criSocket, "", "The cri socket path to be used.")
startCmd.Flags().String(networkPlugin, "", "Kubelet network plug-in to use (default: auto)")
startCmd.Flags().Bool(enableDefaultCNI, false, "DEPRECATED: Replaced by --cni=bridge")
startCmd.Flags().String(cniFlag, "", "CNI plug-in to use. Valid options: auto, bridge, flannel, kindnet, or path to a CNI manifest (default: auto)")
startCmd.Flags().String(cniFlag, "", "CNI plug-in to use. Valid options: auto, bridge, cilium, flannel, kindnet, or path to a CNI manifest (default: auto)")
startCmd.Flags().StringSlice(waitComponents, kverify.DefaultWaitList, fmt.Sprintf("comma separated list of Kubernetes components to verify and wait for after starting a cluster. defaults to %q, available options: %q . other acceptable values are 'all' or 'none', 'true' and 'false'", strings.Join(kverify.DefaultWaitList, ","), strings.Join(kverify.AllComponentsList, ",")))
startCmd.Flags().Duration(waitTimeout, 6*time.Minute, "max time to wait per Kubernetes core services to be healthy.")
startCmd.Flags().Bool(nativeSSH, true, "Use native Golang SSH client (default true). Set to 'false' to use the command line 'ssh' command when accessing the docker machine. Useful for the machine drivers when they will not start with 'Waiting for SSH'.")
......
/*
Copyright 2020 The Kubernetes Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package cni
import (
"os/exec"
"github.com/pkg/errors"
"k8s.io/minikube/pkg/minikube/config"
)
// From https://raw.githubusercontent.com/cilium/cilium/v1.8/install/kubernetes/quick-install.yaml
var ciliumTmpl = `---
# Source: cilium/charts/agent/templates/serviceaccount.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: cilium
namespace: kube-system
---
# Source: cilium/charts/operator/templates/serviceaccount.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: cilium-operator
namespace: kube-system
---
# Source: cilium/charts/config/templates/configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
name: cilium-config
namespace: kube-system
data:
# Identity allocation mode selects how identities are shared between cilium
# nodes by setting how they are stored. The options are "crd" or "kvstore".
# - "crd" stores identities in kubernetes as CRDs (custom resource definition).
# These can be queried with:
# kubectl get ciliumid
# - "kvstore" stores identities in a kvstore, etcd or consul, that is
# configured below. Cilium versions before 1.6 supported only the kvstore
# backend. Upgrades from these older cilium versions should continue using
# the kvstore by commenting out the identity-allocation-mode below, or
# setting it to "kvstore".
identity-allocation-mode: crd
# If you want to run cilium in debug mode change this value to true
debug: "false"
# Enable IPv4 addressing. If enabled, all endpoints are allocated an IPv4
# address.
enable-ipv4: "true"
# Enable IPv6 addressing. If enabled, all endpoints are allocated an IPv6
# address.
enable-ipv6: "false"
enable-bpf-clock-probe: "true"
# If you want cilium monitor to aggregate tracing for packets, set this level
# to "low", "medium", or "maximum". The higher the level, the less packets
# that will be seen in monitor output.
monitor-aggregation: medium
# The monitor aggregation interval governs the typical time between monitor
# notification events for each allowed connection.
#
# Only effective when monitor aggregation is set to "medium" or higher.
monitor-aggregation-interval: 5s
# The monitor aggregation flags determine which TCP flags which, upon the
# first observation, cause monitor notifications to be generated.
#
# Only effective when monitor aggregation is set to "medium" or higher.
monitor-aggregation-flags: all
# bpf-policy-map-max specified the maximum number of entries in endpoint
# policy map (per endpoint)
bpf-policy-map-max: "16384"
# Specifies the ratio (0.0-1.0) of total system memory to use for dynamic
# sizing of the TCP CT, non-TCP CT, NAT and policy BPF maps.
bpf-map-dynamic-size-ratio: "0.0025"
# Pre-allocation of map entries allows per-packet latency to be reduced, at
# the expense of up-front memory allocation for the entries in the maps. The
# default value below will minimize memory usage in the default installation;
# users who are sensitive to latency may consider setting this to "true".
#
# This option was introduced in Cilium 1.4. Cilium 1.3 and earlier ignore
# this option and behave as though it is set to "true".
#
# If this value is modified, then during the next Cilium startup the restore
# of existing endpoints and tracking of ongoing connections may be disrupted.
# This may lead to policy drops or a change in loadbalancing decisions for a
# connection for some time. Endpoints may need to be recreated to restore
# connectivity.
#
# If this option is set to "false" during an upgrade from 1.3 or earlier to
# 1.4 or later, then it may cause one-time disruptions during the upgrade.
preallocate-bpf-maps: "false"
# Regular expression matching compatible Istio sidecar istio-proxy
# container image names
sidecar-istio-proxy-image: "cilium/istio_proxy"
# Encapsulation mode for communication between nodes
# Possible values:
# - disabled
# - vxlan (default)
# - geneve
tunnel: vxlan
# Name of the cluster. Only relevant when building a mesh of clusters.
cluster-name: default
# DNS Polling periodically issues a DNS lookup for each 'matchName' from
# cilium-agent. The result is used to regenerate endpoint policy.
# DNS lookups are repeated with an interval of 5 seconds, and are made for
# A(IPv4) and AAAA(IPv6) addresses. Should a lookup fail, the most recent IP
# data is used instead. An IP change will trigger a regeneration of the Cilium
# policy for each endpoint and increment the per cilium-agent policy
# repository revision.
#
# This option is disabled by default starting from version 1.4.x in favor
# of a more powerful DNS proxy-based implementation, see [0] for details.
# Enable this option if you want to use FQDN policies but do not want to use
# the DNS proxy.
#
# To ease upgrade, users may opt to set this option to "true".
# Otherwise please refer to the Upgrade Guide [1] which explains how to
# prepare policy rules for upgrade.
#
# [0] http://docs.cilium.io/en/stable/policy/language/#dns-based
# [1] http://docs.cilium.io/en/stable/install/upgrade/#changes-that-may-require-action
tofqdns-enable-poller: "false"
# wait-bpf-mount makes init container wait until bpf filesystem is mounted
wait-bpf-mount: "false"
masquerade: "true"
enable-bpf-masquerade: "true"
enable-xt-socket-fallback: "true"
install-iptables-rules: "true"
auto-direct-node-routes: "false"
kube-proxy-replacement: "probe"
node-port-bind-protection: "true"
enable-auto-protect-node-port-range: "true"
enable-session-affinity: "true"
k8s-require-ipv4-pod-cidr: "true"
k8s-require-ipv6-pod-cidr: "false"
enable-endpoint-health-checking: "true"
enable-well-known-identities: "false"
enable-remote-node-identity: "true"
operator-api-serve-addr: "127.0.0.1:9234"
ipam: "cluster-pool"
cluster-pool-ipv4-cidr: "10.0.0.0/8"
cluster-pool-ipv4-mask-size: "24"
disable-cnp-status-updates: "true"
---
# Source: cilium/charts/agent/templates/clusterrole.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: cilium
rules:
- apiGroups:
- networking.k8s.io
resources:
- networkpolicies
verbs:
- get
- list
- watch
- apiGroups:
- discovery.k8s.io
resources:
- endpointslices
verbs:
- get
- list
- watch
- apiGroups:
- ""
resources:
- namespaces
- services
- nodes
- endpoints
verbs:
- get
- list
- watch
- apiGroups:
- ""
resources:
- pods
- nodes
verbs:
- get
- list
- watch
- update
- apiGroups:
- ""
resources:
- nodes
- nodes/status
verbs:
- patch
- apiGroups:
- apiextensions.k8s.io
resources:
- customresourcedefinitions
verbs:
- create
- get
- list
- watch
- update
- apiGroups:
- cilium.io
resources:
- ciliumnetworkpolicies
- ciliumnetworkpolicies/status
- ciliumclusterwidenetworkpolicies
- ciliumclusterwidenetworkpolicies/status
- ciliumendpoints
- ciliumendpoints/status
- ciliumnodes
- ciliumnodes/status
- ciliumidentities
verbs:
- '*'
---
# Source: cilium/charts/operator/templates/clusterrole.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: cilium-operator
rules:
- apiGroups:
- ""
resources:
# to automatically delete [core|kube]dns pods so that are starting to being
# managed by Cilium
- pods
verbs:
- get
- list
- watch
- delete
- apiGroups:
- discovery.k8s.io
resources:
- endpointslices
verbs:
- get
- list
- watch
- apiGroups:
- ""
resources:
# to perform the translation of a CNP that contains 'ToGroup' to its endpoints
- services
- endpoints
# to check apiserver connectivity
- namespaces
verbs:
- get
- list
- watch
- apiGroups:
- cilium.io
resources:
- ciliumnetworkpolicies
- ciliumnetworkpolicies/status
- ciliumclusterwidenetworkpolicies
- ciliumclusterwidenetworkpolicies/status
- ciliumendpoints
- ciliumendpoints/status
- ciliumnodes
- ciliumnodes/status
- ciliumidentities
- ciliumidentities/status
verbs:
- '*'
- apiGroups:
- apiextensions.k8s.io
resources:
- customresourcedefinitions
verbs:
- get
- list
- watch
---
# Source: cilium/charts/agent/templates/clusterrolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: cilium
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cilium
subjects:
- kind: ServiceAccount
name: cilium
namespace: kube-system
---
# Source: cilium/charts/operator/templates/clusterrolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: cilium-operator
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cilium-operator
subjects:
- kind: ServiceAccount
name: cilium-operator
namespace: kube-system
---
# Source: cilium/charts/agent/templates/daemonset.yaml
apiVersion: apps/v1
kind: DaemonSet
metadata:
labels:
k8s-app: cilium
name: cilium
namespace: kube-system
spec:
selector:
matchLabels:
k8s-app: cilium
template:
metadata:
annotations:
# This annotation plus the CriticalAddonsOnly toleration makes
# cilium to be a critical pod in the cluster, which ensures cilium
# gets priority scheduling.
# https://kubernetes.io/docs/tasks/administer-cluster/guaranteed-scheduling-critical-addon-pods/
scheduler.alpha.kubernetes.io/critical-pod: ""
labels:
k8s-app: cilium
spec:
affinity:
podAntiAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
- labelSelector:
matchExpressions:
- key: k8s-app
operator: In
values:
- cilium
topologyKey: kubernetes.io/hostname
containers:
- args:
- --config-dir=/tmp/cilium/config-map
command:
- cilium-agent
livenessProbe:
httpGet:
host: '127.0.0.1'
path: /healthz
port: 9876
scheme: HTTP
httpHeaders:
- name: "brief"
value: "true"
failureThreshold: 10
# The initial delay for the liveness probe is intentionally large to
# avoid an endless kill & restart cycle if in the event that the initial
# bootstrapping takes longer than expected.
initialDelaySeconds: 120
periodSeconds: 30
successThreshold: 1
timeoutSeconds: 5
readinessProbe:
httpGet:
host: '127.0.0.1'
path: /healthz
port: 9876
scheme: HTTP
httpHeaders:
- name: "brief"
value: "true"
failureThreshold: 3
initialDelaySeconds: 5
periodSeconds: 30
successThreshold: 1
timeoutSeconds: 5
env:
- name: K8S_NODE_NAME
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: spec.nodeName
- name: CILIUM_K8S_NAMESPACE
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: metadata.namespace
- name: CILIUM_Cilium_MASTER_DEVICE
valueFrom:
configMapKeyRef:
key: Cilium-master-device
name: cilium-config
optional: true
- name: CILIUM_Cilium_UNINSTALL_ON_EXIT
valueFrom:
configMapKeyRef:
key: Cilium-uninstall-on-exit
name: cilium-config
optional: true
- name: CILIUM_CLUSTERMESH_CONFIG
value: /var/lib/cilium/clustermesh/
- name: CILIUM_CNI_CHAINING_MODE
valueFrom:
configMapKeyRef:
key: cni-chaining-mode
name: cilium-config
optional: true
- name: CILIUM_CUSTOM_CNI_CONF
valueFrom:
configMapKeyRef:
key: custom-cni-conf
name: cilium-config
optional: true
image: "docker.io/cilium/cilium:v1.8.0"
imagePullPolicy: IfNotPresent
lifecycle:
postStart:
exec:
command:
- "/cni-install.sh"
- "--enable-debug=false"
preStop:
exec:
command:
- /cni-uninstall.sh
name: cilium-agent
securityContext:
capabilities:
add:
- NET_ADMIN
- SYS_MODULE
privileged: true
volumeMounts:
- mountPath: /sys/fs/bpf
name: bpf-maps
- mountPath: /var/run/cilium
name: cilium-run
- mountPath: /host/opt/cni/bin
name: cni-path
- mountPath: /host/etc/cni/net.d
name: etc-cni-netd
- mountPath: /var/lib/cilium/clustermesh
name: clustermesh-secrets
readOnly: true
- mountPath: /tmp/cilium/config-map
name: cilium-config-path
readOnly: true
# Needed to be able to load kernel modules
- mountPath: /lib/modules
name: lib-modules
readOnly: true
- mountPath: /run/xtables.lock
name: xtables-lock
hostNetwork: true
initContainers:
- command:
- /init-container.sh
env:
- name: CILIUM_ALL_STATE
valueFrom:
configMapKeyRef:
key: clean-cilium-state
name: cilium-config
optional: true
- name: CILIUM_BPF_STATE
valueFrom:
configMapKeyRef:
key: clean-cilium-bpf-state
name: cilium-config
optional: true
- name: CILIUM_WAIT_BPF_MOUNT
valueFrom:
configMapKeyRef:
key: wait-bpf-mount
name: cilium-config
optional: true
image: "docker.io/cilium/cilium:v1.8.0"
imagePullPolicy: IfNotPresent
name: clean-cilium-state
securityContext:
capabilities:
add:
- NET_ADMIN
privileged: true
volumeMounts:
- mountPath: /sys/fs/bpf
name: bpf-maps
mountPropagation: HostToContainer
- mountPath: /var/run/cilium
name: cilium-run
resources:
requests:
cpu: 100m
memory: 100Mi
restartPolicy: Always
priorityClassName: system-node-critical
serviceAccount: cilium
serviceAccountName: cilium
terminationGracePeriodSeconds: 1
tolerations:
- operator: Exists
volumes:
# To keep state between restarts / upgrades
- hostPath:
path: /var/run/cilium
type: DirectoryOrCreate
name: cilium-run
# To keep state between restarts / upgrades for bpf maps
- hostPath:
path: /sys/fs/bpf
type: DirectoryOrCreate
name: bpf-maps
# To install cilium cni plugin in the host
- hostPath:
path: /opt/cni/bin
type: DirectoryOrCreate
name: cni-path
# To install cilium cni configuration in the host
- hostPath:
path: /etc/cni/net.d
type: DirectoryOrCreate
name: etc-cni-netd
# To be able to load kernel modules
- hostPath:
path: /lib/modules
name: lib-modules
# To access iptables concurrently with other processes (e.g. kube-proxy)
- hostPath:
path: /run/xtables.lock
type: FileOrCreate
name: xtables-lock
# To read the clustermesh configuration
- name: clustermesh-secrets
secret:
defaultMode: 420
optional: true
secretName: cilium-clustermesh
# To read the configuration from the config map
- configMap:
name: cilium-config
name: cilium-config-path
updateStrategy:
rollingUpdate:
maxUnavailable: 2
type: RollingUpdate
---
# Source: cilium/charts/operator/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
io.cilium/app: operator
name: cilium-operator
name: cilium-operator
namespace: kube-system
spec:
replicas: 1
selector:
matchLabels:
io.cilium/app: operator
name: cilium-operator
strategy:
rollingUpdate:
maxSurge: 1
maxUnavailable: 1
type: RollingUpdate
template:
metadata:
annotations:
labels:
io.cilium/app: operator
name: cilium-operator
spec:
containers:
- args:
- --config-dir=/tmp/cilium/config-map
- --debug=$(CILIUM_DEBUG)
command:
- cilium-operator-generic
env:
- name: K8S_NODE_NAME
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: spec.nodeName
- name: CILIUM_K8S_NAMESPACE
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: metadata.namespace
- name: CILIUM_DEBUG
valueFrom:
configMapKeyRef:
key: debug
name: cilium-config
optional: true
- name: AWS_ACCESS_KEY_ID
valueFrom:
secretKeyRef:
key: AWS_ACCESS_KEY_ID
name: cilium-aws
optional: true
- name: AWS_SECRET_ACCESS_KEY
valueFrom:
secretKeyRef:
key: AWS_SECRET_ACCESS_KEY
name: cilium-aws
optional: true
- name: AWS_DEFAULT_REGION
valueFrom:
secretKeyRef:
key: AWS_DEFAULT_REGION
name: cilium-aws
optional: true
image: "docker.io/cilium/operator-generic:v1.8.0"
imagePullPolicy: IfNotPresent
name: cilium-operator
livenessProbe:
httpGet:
host: '127.0.0.1'
path: /healthz
port: 9234
scheme: HTTP
initialDelaySeconds: 60
periodSeconds: 10
timeoutSeconds: 3
volumeMounts:
- mountPath: /tmp/cilium/config-map
name: cilium-config-path
readOnly: true
hostNetwork: true
restartPolicy: Always
priorityClassName: system-cluster-critical
serviceAccount: cilium-operator
serviceAccountName: cilium-operator
volumes:
# To read the configuration from the config map
- configMap:
name: cilium-config
name: cilium-config-path
`
// Cilium is the Cilium CNI manager
type Cilium struct {
cc config.ClusterConfig
}
// String returns a string representation of this CNI
func (c Cilium) String() string {
return "Cilium"
}
// Apply enables the CNI
func (c Cilium) Apply(r Runner) error {
// see https://kubernetes.io/docs/tasks/administer-cluster/network-policy-provider/cilium-network-policy/
if _, err := r.RunCmd(exec.Command("sudo", "/bin/bash", "-c", "grep 'bpffs /sys/fs/bpf' /proc/mounts || sudo mount bpffs -t bpf /sys/fs/bpf")); err != nil {
return errors.Wrap(err, "bpf mount")
}
return applyManifest(c.cc, r, manifestAsset([]byte(ciliumTmpl)))
}
// CIDR returns the default CIDR used by this CNI
func (c Cilium) CIDR() string {
return DefaultPodCIDR
}
......@@ -82,6 +82,8 @@ func New(cc config.ClusterConfig) (Manager, error) {
return KindNet{cc: cc}, nil
case "bridge":
return Bridge{cc: cc}, nil
case "cilium":
return Cilium{cc: cc}, nil
case "flannel":
return Flannel{cc: cc}, nil
default:
......
......@@ -29,7 +29,7 @@ minikube start [flags]
--auto-update-drivers If set, automatically updates drivers to the latest version. Defaults to true. (default true)
--base-image string The base image to use for docker/podman drivers. Intended for local development. (default "gcr.io/k8s-minikube/kicbase:v0.0.10@sha256:f58e0c4662bac8a9b5dda7984b185bad8502ade5d9fa364bf2755d636ab51438")
--cache-images If true, cache docker images for the current bootstrapper and load them into the machine. Always false with --driver=none. (default true)
--cni string CNI plug-in to use. Valid options: auto, bridge, flannel, kindnet, or path to a CNI manifest (default: auto)
--cni string CNI plug-in to use. Valid options: auto, bridge, cilium, flannel, kindnet, or path to a CNI manifest (default: auto)
--container-runtime string The container runtime to be used (docker, crio, containerd). (default "docker")
--cpus int Number of CPUs allocated to Kubernetes. (default 2)
--cri-socket string The cri socket path to be used.
......
......@@ -51,6 +51,7 @@ func TestNetworkPlugins(t *testing.T) {
{"kindnet", []string{"--cni=kindnet"}, "cni", "app=kindnet", true},
{"false", []string{"--cni=false"}, "", "", false},
{"custom-weave", []string{fmt.Sprintf("--cni=%s", filepath.Join(*testdataDir, "weavenet.yaml"))}, "cni", "", true},
{"cilium", []string{"--cni=cilium"}, "cni", "k8s-app=cilium", true},
}
for _, tc := range tests {
......
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