12.集群初始化
[root@k8s-master01 ~]# kubeadm init --config /root/kubeadm-config.yaml --upload-certs
[init] Using Kubernetes version: v1.21.8
[preflight] Running pre-flight checks
[preflight] Pulling images required for setting up a Kubernetes cluster
[preflight] This might take a minute or two, depending on the speed of your internet connection
[preflight] You can also perform this action in beforehand using 'kubeadm config images pull'
[certs] Using certificateDir folder "/etc/kubernetes/pki"
[certs] Generating "ca" certificate and key
[certs] Generating "apiserver" certificate and key
[certs] apiserver serving cert is signed for DNS names [k8s-master01 kubernetes kubernetes.default kubernetes.default.svc kubernetes.default.svc.example.local] and IPs [10.96.0.1 172.31.3.101 172.31.3.188]
[certs] Generating "apiserver-kubelet-client" certificate and key
[certs] Generating "front-proxy-ca" certificate and key
[certs] Generating "front-proxy-client" certificate and key
[certs] Generating "etcd/ca" certificate and key
[certs] Generating "etcd/server" certificate and key
[certs] etcd/server serving cert is signed for DNS names [k8s-master01 localhost] and IPs [172.31.3.101 127.0.0.1 ::1]
[certs] Generating "etcd/peer" certificate and key
[certs] etcd/peer serving cert is signed for DNS names [k8s-master01 localhost] and IPs [172.31.3.101 127.0.0.1 ::1]
[certs] Generating "etcd/healthcheck-client" certificate and key
[certs] Generating "apiserver-etcd-client" certificate and key
[certs] Generating "sa" key and public key
[kubeconfig] Using kubeconfig folder "/etc/kubernetes"
[kubeconfig] Writing "admin.conf" kubeconfig file
[kubeconfig] Writing "kubelet.conf" kubeconfig file
[kubeconfig] Writing "controller-manager.conf" kubeconfig file
[kubeconfig] Writing "scheduler.conf" kubeconfig file
[kubelet-start] Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env"
[kubelet-start] Writing kubelet configuration to file "/var/lib/kubelet/config.yaml"
[kubelet-start] Starting the kubelet
[control-plane] Using manifest folder "/etc/kubernetes/manifests"
[control-plane] Creating static Pod manifest for "kube-apiserver"
[control-plane] Creating static Pod manifest for "kube-controller-manager"
[control-plane] Creating static Pod manifest for "kube-scheduler"
[etcd] Creating static Pod manifest for local etcd in "/etc/kubernetes/manifests"
[wait-control-plane] Waiting for the kubelet to boot up the control plane as static Pods from directory "/etc/kubernetes/manifests". This can take up to 4m0s
[apiclient] All control plane components are healthy after 24.045056 seconds
[upload-config] Storing the configuration used in ConfigMap "kubeadm-config" in the "kube-system" Namespace
[kubelet] Creating a ConfigMap "kubelet-config-1.21" in namespace kube-system with the configuration for the kubelets in the cluster
[upload-certs] Storing the certificates in Secret "kubeadm-certs" in the "kube-system" Namespace
[upload-certs] Using certificate key:
dc421f527c89e2c7de6ca5a5a97f5dc6d340d917166c1b25f0402e4f0e2a5dda
[mark-control-plane] Marking the node k8s-master01 as control-plane by adding the labels: [node-role.kubernetes.io/master(deprecated) node-role.kubernetes.io/control-plane node.kubernetes.io/exclude-from-external-load-balancers]
[mark-control-plane] Marking the node k8s-master01 as control-plane by adding the taints [node-role.kubernetes.io/master:NoSchedule]
[bootstrap-token] Using token: 7t2weq.bjbawausm0jaxury
[bootstrap-token] Configuring bootstrap tokens, cluster-info ConfigMap, RBAC Roles
[bootstrap-token] configured RBAC rules to allow Node Bootstrap tokens to get nodes
[bootstrap-token] configured RBAC rules to allow Node Bootstrap tokens to post CSRs in order for nodes to get long term certificate credentials
[bootstrap-token] configured RBAC rules to allow the csrapprover controller automatically approve CSRs from a Node Bootstrap Token
[bootstrap-token] configured RBAC rules to allow certificate rotation for all node client certificates in the cluster
[bootstrap-token] Creating the "cluster-info" ConfigMap in the "kube-public" namespace
[kubelet-finalize] Updating "/etc/kubernetes/kubelet.conf" to point to a rotatable kubelet client certificate and key
[addons] Applied essential addon: CoreDNS
[addons] Applied essential addon: kube-proxy
Your Kubernetes control-plane has initialized successfully!
To start using your cluster, you need to run the following as a regular user:
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
Alternatively, if you are the root user, you can run:
export KUBECONFIG=/etc/kubernetes/admin.conf
You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
https://kubernetes.io/docs/concepts/cluster-administration/addons/
You can now join any number of the control-plane node running the following command on each as root:
kubeadm join 172.31.3.188:6443 --token 7t2weq.bjbawausm0jaxury \
--discovery-token-ca-cert-hash sha256:c3accb0162e710461f5f0b4e800ec9e3a4c37445c92b9f272bf4c8f7ef0c0132 \
--control-plane --certificate-key dc421f527c89e2c7de6ca5a5a97f5dc6d340d917166c1b25f0402e4f0e2a5dda
Please note that the certificate-key gives access to cluster sensitive data, keep it secret!
As a safeguard, uploaded-certs will be deleted in two hours; If necessary, you can use
"kubeadm init phase upload-certs --upload-certs" to reload certs afterward.
Then you can join any number of worker nodes by running the following on each as root:
kubeadm join 172.31.3.188:6443 --token 7t2weq.bjbawausm0jaxury \
--discovery-token-ca-cert-hash sha256:c3accb0162e710461f5f0b4e800ec9e3a4c37445c92b9f272bf4c8f7ef0c0132
Master01节点配置环境变量，用于访问Kubernetes集群：
[root@k8s-master01 ~]# cat >> /root/.bashrc <<EOF
export KUBECONFIG=/etc/kubernetes/admin.conf
EOF
[root@k8s-master01 ~]# source .bashrc
#Kubectl 自动补全
#CentOS
[root@k8s-master01 ~]# yum -y install bash-completion
#Ubuntu
[root@k8s-master01 ~]# apt -y install bash-completion
[root@k8s-master01 ~]# source <(kubectl completion bash)
[root@k8s-master01 ~]# echo "source <(kubectl completion bash)" >> ~/.bashrc
查看节点状态：
[root@k8s-master01 ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
k8s-master01 NotReady control-plane,master 3m6s v1.21.8
采用初始化安装方式，所有的系统组件均以容器的方式运行并且在kube-system命名空间内，此时可以查看Pod状态：
[root@k8s-master01 ~]# kubectl get pods -n kube-system -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
coredns-78db7484ff-6qndp 0/1 Pending 0 3m20s <none> <none> <none> <none>
coredns-78db7484ff-snvkx 0/1 Pending 0 3m20s <none> <none> <none> <none>
etcd-k8s-master01 1/1 Running 0 3m16s 172.31.3.101 k8s-master01 <none> <none>
kube-apiserver-k8s-master01 1/1 Running 0 3m16s 172.31.3.101 k8s-master01 <none> <none>
kube-controller-manager-k8s-master01 1/1 Running 0 3m16s 172.31.3.101 k8s-master01 <none> <none>
kube-proxy-ngpjq 1/1 Running 0 3m20s 172.31.3.101 k8s-master01 <none> <none>
kube-scheduler-k8s-master01 1/1 Running 0 3m16s 172.31.3.101 k8s-master01 <none> <none>
13.高可用Master
添加master02和master03:
kubeadm join 172.31.3.188:6443 --token 7t2weq.bjbawausm0jaxury \
--discovery-token-ca-cert-hash sha256:c3accb0162e710461f5f0b4e800ec9e3a4c37445c92b9f272bf4c8f7ef0c0132 \
--control-plane --certificate-key dc421f527c89e2c7de6ca5a5a97f5dc6d340d917166c1b25f0402e4f0e2a5dda
[root@k8s-master01 ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
k8s-master01 NotReady control-plane,master 5m18s v1.21.8
k8s-master02.example.local NotReady control-plane,master 50s v1.21.8
k8s-master03.example.local NotReady control-plane,master 8s v1.21.8
14.Node节点的配置
添加node01、node02、node03:
kubeadm join 172.31.3.188:6443 --token 7t2weq.bjbawausm0jaxury \
--discovery-token-ca-cert-hash sha256:c3accb0162e710461f5f0b4e800ec9e3a4c37445c92b9f272bf4c8f7ef0c0132
[root@k8s-master01 ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
k8s-master01 NotReady control-plane,master 6m23s v1.21.8
k8s-master02.example.local NotReady control-plane,master 115s v1.21.8
k8s-master03.example.local NotReady control-plane,master 73s v1.21.8
k8s-node01.example.local NotReady <none> 26s v1.21.8
k8s-node02.example.local NotReady <none> 14s v1.21.8
k8s-node03.example.local NotReady <none> 4s v1.21.8
15.安装Calico
15.1 安装calico
[root@ansible-server ansible]# mkdir -p roles/calico/{tasks,vars,templates}
[root@ansible-server ansible]# cd roles/calico
[root@ansible-server calico]# ls
tasks templates vars
#下面HARBOR_DOMAIN的地址设置成自己的harbor域名地址
[root@ansible-server calico]# vim vars/main.yml
HARBOR_DOMAIN: harbor.raymonds.cc
[root@ansible-server calico]# cat templates/calico-etcd.yaml.j2
---
# Source: calico/templates/calico-etcd-secrets.yaml
# The following contains k8s Secrets for use with a TLS enabled etcd cluster.
# For information on populating Secrets, see http://kubernetes.io/docs/user-guide/secrets/
apiVersion: v1
kind: Secret
type: Opaque
metadata:
name: calico-etcd-secrets
namespace: kube-system
data:
# Populate the following with etcd TLS configuration if desired, but leave blank if
# not using TLS for etcd.
# The keys below should be uncommented and the values populated with the base64
# encoded contents of each file that would be associated with the TLS data.
# Example command for encoding a file contents: cat <file> | base64 -w 0
# etcd-key: null
# etcd-cert: null
# etcd-ca: null
---
# Source: calico/templates/calico-config.yaml
# This ConfigMap is used to configure a self-hosted Calico installation.
kind: ConfigMap
apiVersion: v1
metadata:
name: calico-config
namespace: kube-system
data:
# Configure this with the location of your etcd cluster.
etcd_endpoints: "http://<ETCD_IP>:<ETCD_PORT>"
# If you're using TLS enabled etcd uncomment the following.
# You must also populate the Secret below with these files.
etcd_ca: "" # "/calico-secrets/etcd-ca"
etcd_cert: "" # "/calico-secrets/etcd-cert"
etcd_key: "" # "/calico-secrets/etcd-key"
# Typha is disabled.
typha_service_name: "none"
# Configure the backend to use.
calico_backend: "bird"
# Configure the MTU to use for workload interfaces and tunnels.
# - If Wireguard is enabled, set to your network MTU - 60
# - Otherwise, if VXLAN or BPF mode is enabled, set to your network MTU - 50
# - Otherwise, if IPIP is enabled, set to your network MTU - 20
# - Otherwise, if not using any encapsulation, set to your network MTU.
veth_mtu: "1440"
# The CNI network configuration to install on each node. The special
# values in this config will be automatically populated.
cni_network_config: |-
{
"name": "k8s-pod-network",
"cniVersion": "0.3.1",
"plugins": [
{
"type": "calico",
"log_level": "info",
"etcd_endpoints": "__ETCD_ENDPOINTS__",
"etcd_key_file": "__ETCD_KEY_FILE__",
"etcd_cert_file": "__ETCD_CERT_FILE__",
"etcd_ca_cert_file": "__ETCD_CA_CERT_FILE__",
"mtu": __CNI_MTU__,
"ipam": {
"type": "calico-ipam"
},
"policy": {
"type": "k8s"
},
"kubernetes": {
"kubeconfig": "__KUBECONFIG_FILEPATH__"
}
},
{
"type": "portmap",
"snat": true,
"capabilities": {"portMappings": true}
},
{
"type": "bandwidth",
"capabilities": {"bandwidth": true}
}
]
}
---
# Source: calico/templates/calico-kube-controllers-rbac.yaml
# Include a clusterrole for the kube-controllers component,
# and bind it to the calico-kube-controllers serviceaccount.
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: calico-kube-controllers
rules:
# Pods are monitored for changing labels.
# The node controller monitors Kubernetes nodes.
# Namespace and serviceaccount labels are used for policy.
- apiGroups: [""]
resources:
- pods
- nodes
- namespaces
- serviceaccounts
verbs:
- watch
- list
- get
# Watch for changes to Kubernetes NetworkPolicies.
- apiGroups: ["networking.k8s.io"]
resources:
- networkpolicies
verbs:
- watch
- list
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: calico-kube-controllers
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: calico-kube-controllers
subjects:
- kind: ServiceAccount
name: calico-kube-controllers
namespace: kube-system
---
---
# Source: calico/templates/calico-node-rbac.yaml
# Include a clusterrole for the calico-node DaemonSet,
# and bind it to the calico-node serviceaccount.
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: calico-node
rules:
# The CNI plugin needs to get pods, nodes, and namespaces.
- apiGroups: [""]
resources:
- pods
- nodes
- namespaces
verbs:
- get
- apiGroups: [""]
resources:
- endpoints
- services
verbs:
# Used to discover service IPs for advertisement.
- watch
- list
# Pod CIDR auto-detection on kubeadm needs access to config maps.
- apiGroups: [""]
resources:
- configmaps
verbs:
- get
- apiGroups: [""]
resources:
- nodes/status
verbs:
# Needed for clearing NodeNetworkUnavailable flag.
- patch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: calico-node
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: calico-node
subjects:
- kind: ServiceAccount
name: calico-node
namespace: kube-system
---
# Source: calico/templates/calico-node.yaml
# This manifest installs the calico-node container, as well
# as the CNI plugins and network config on
# each master and worker node in a Kubernetes cluster.
kind: DaemonSet
apiVersion: apps/v1
metadata:
name: calico-node
namespace: kube-system
labels:
k8s-app: calico-node
spec:
selector:
matchLabels:
k8s-app: calico-node
updateStrategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 1
template:
metadata:
labels:
k8s-app: calico-node
spec:
nodeSelector:
kubernetes.io/os: linux
hostNetwork: true
tolerations:
# Make sure calico-node gets scheduled on all nodes.
- effect: NoSchedule
operator: Exists
# Mark the pod as a critical add-on for rescheduling.
- key: CriticalAddonsOnly
operator: Exists
- effect: NoExecute
operator: Exists
serviceAccountName: calico-node
# Minimize downtime during a rolling upgrade or deletion; tell Kubernetes to do a "force
# deletion": https://kubernetes.io/docs/concepts/workloads/pods/pod/#termination-of-pods.
terminationGracePeriodSeconds: 0
priorityClassName: system-node-critical
initContainers:
# This container installs the CNI binaries
# and CNI network config file on each node.
- name: install-cni
image: registry.cn-beijing.aliyuncs.com/dotbalo/cni:v3.15.3
command: ["/install-cni.sh"]
env:
# Name of the CNI config file to create.
- name: CNI_CONF_NAME
value: "10-calico.conflist"
# The CNI network config to install on each node.
- name: CNI_NETWORK_CONFIG
valueFrom:
configMapKeyRef:
name: calico-config
key: cni_network_config
# The location of the etcd cluster.
- name: ETCD_ENDPOINTS
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_endpoints
# CNI MTU Config variable
- name: CNI_MTU
valueFrom:
configMapKeyRef:
name: calico-config
key: veth_mtu
# Prevents the container from sleeping forever.
- name: SLEEP
value: "false"
volumeMounts:
- mountPath: /host/opt/cni/bin
name: cni-bin-dir
- mountPath: /host/etc/cni/net.d
name: cni-net-dir
- mountPath: /calico-secrets
name: etcd-certs
securityContext:
privileged: true
# Adds a Flex Volume Driver that creates a per-pod Unix Domain Socket to allow Dikastes
# to communicate with Felix over the Policy Sync API.
- name: flexvol-driver
image: registry.cn-beijing.aliyuncs.com/dotbalo/pod2daemon-flexvol:v3.15.3
volumeMounts:
- name: flexvol-driver-host
mountPath: /host/driver
securityContext:
privileged: true
containers:
# Runs calico-node container on each Kubernetes node. This
# container programs network policy and routes on each
# host.
- name: calico-node
image: registry.cn-beijing.aliyuncs.com/dotbalo/node:v3.15.3
env:
# The location of the etcd cluster.
- name: ETCD_ENDPOINTS
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_endpoints
# Location of the CA certificate for etcd.
- name: ETCD_CA_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_ca
# Location of the client key for etcd.
- name: ETCD_KEY_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_key
# Location of the client certificate for etcd.
- name: ETCD_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_cert
# Set noderef for node controller.
- name: CALICO_K8S_NODE_REF
valueFrom:
fieldRef:
fieldPath: spec.nodeName
# Choose the backend to use.
- name: CALICO_NETWORKING_BACKEND
valueFrom:
configMapKeyRef:
name: calico-config
key: calico_backend
# Cluster type to identify the deployment type
- name: CLUSTER_TYPE
value: "k8s,bgp"
# Auto-detect the BGP IP address.
- name: IP
value: "autodetect"
# Enable IPIP
- name: CALICO_IPV4POOL_IPIP
value: "Always"
# Enable or Disable VXLAN on the default IP pool.
- name: CALICO_IPV4POOL_VXLAN
value: "Never"
# Set MTU for tunnel device used if ipip is enabled
- name: FELIX_IPINIPMTU
valueFrom:
configMapKeyRef:
name: calico-config
key: veth_mtu
# Set MTU for the VXLAN tunnel device.
- name: FELIX_VXLANMTU
valueFrom:
configMapKeyRef:
name: calico-config
key: veth_mtu
# Set MTU for the Wireguard tunnel device.
- name: FELIX_WIREGUARDMTU
valueFrom:
configMapKeyRef:
name: calico-config
key: veth_mtu
# The default IPv4 pool to create on startup if none exists. Pod IPs will be
# chosen from this range. Changing this value after installation will have
# no effect. This should fall within `--cluster-cidr`.
# - name: CALICO_IPV4POOL_CIDR
# value: "192.168.0.0/16"
# Disable file logging so `kubectl logs` works.
- name: CALICO_DISABLE_FILE_LOGGING
value: "true"
# Set Felix endpoint to host default action to ACCEPT.
- name: FELIX_DEFAULTENDPOINTTOHOSTACTION
value: "ACCEPT"
# Disable IPv6 on Kubernetes.
- name: FELIX_IPV6SUPPORT
value: "false"
# Set Felix logging to "info"
- name: FELIX_LOGSEVERITYSCREEN
value: "info"
- name: FELIX_HEALTHENABLED
value: "true"
securityContext:
privileged: true
resources:
requests:
cpu: 250m
livenessProbe:
exec:
command:
- /bin/calico-node
- -felix-live
- -bird-live
periodSeconds: 10
initialDelaySeconds: 10
failureThreshold: 6
readinessProbe:
exec:
command:
- /bin/calico-node
- -felix-ready
- -bird-ready
periodSeconds: 10
volumeMounts:
- mountPath: /lib/modules
name: lib-modules
readOnly: true
- mountPath: /run/xtables.lock
name: xtables-lock
readOnly: false
- mountPath: /var/run/calico
name: var-run-calico
readOnly: false
- mountPath: /var/lib/calico
name: var-lib-calico
readOnly: false
- mountPath: /calico-secrets
name: etcd-certs
- name: policysync
mountPath: /var/run/nodeagent
volumes:
# Used by calico-node.
- name: lib-modules
hostPath:
path: /lib/modules
- name: var-run-calico
hostPath:
path: /var/run/calico
- name: var-lib-calico
hostPath:
path: /var/lib/calico
- name: xtables-lock
hostPath:
path: /run/xtables.lock
type: FileOrCreate
# Used to install CNI.
- name: cni-bin-dir
hostPath:
path: /opt/cni/bin
- name: cni-net-dir
hostPath:
path: /etc/cni/net.d
# Mount in the etcd TLS secrets with mode 400.
# See https://kubernetes.io/docs/concepts/configuration/secret/
- name: etcd-certs
secret:
secretName: calico-etcd-secrets
defaultMode: 0400
# Used to create per-pod Unix Domain Sockets
- name: policysync
hostPath:
type: DirectoryOrCreate
path: /var/run/nodeagent
# Used to install Flex Volume Driver
- name: flexvol-driver-host
hostPath:
type: DirectoryOrCreate
path: /usr/libexec/kubernetes/kubelet-plugins/volume/exec/nodeagent~uds
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: calico-node
namespace: kube-system
---
# Source: calico/templates/calico-kube-controllers.yaml
# See https://github.com/projectcalico/kube-controllers
apiVersion: apps/v1
kind: Deployment
metadata:
name: calico-kube-controllers
namespace: kube-system
labels:
k8s-app: calico-kube-controllers
spec:
# The controllers can only have a single active instance.
replicas: 1
selector:
matchLabels:
k8s-app: calico-kube-controllers
strategy:
type: Recreate
template:
metadata:
name: calico-kube-controllers
namespace: kube-system
labels:
k8s-app: calico-kube-controllers
spec:
nodeSelector:
kubernetes.io/os: linux
tolerations:
# Mark the pod as a critical add-on for rescheduling.
- key: CriticalAddonsOnly
operator: Exists
- key: node-role.kubernetes.io/master
effect: NoSchedule
serviceAccountName: calico-kube-controllers
priorityClassName: system-cluster-critical
# The controllers must run in the host network namespace so that
# it isn't governed by policy that would prevent it from working.
hostNetwork: true
containers:
- name: calico-kube-controllers
image: registry.cn-beijing.aliyuncs.com/dotbalo/kube-controllers:v3.15.3
env:
# The location of the etcd cluster.
- name: ETCD_ENDPOINTS
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_endpoints
# Location of the CA certificate for etcd.
- name: ETCD_CA_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_ca
# Location of the client key for etcd.
- name: ETCD_KEY_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_key
# Location of the client certificate for etcd.
- name: ETCD_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_cert
# Choose which controllers to run.
- name: ENABLED_CONTROLLERS
value: policy,namespace,serviceaccount,workloadendpoint,node
volumeMounts:
# Mount in the etcd TLS secrets.
- mountPath: /calico-secrets
name: etcd-certs
readinessProbe:
exec:
command:
- /usr/bin/check-status
- -r
volumes:
# Mount in the etcd TLS secrets with mode 400.
# See https://kubernetes.io/docs/concepts/configuration/secret/
- name: etcd-certs
secret:
secretName: calico-etcd-secrets
defaultMode: 0400
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: calico-kube-controllers
namespace: kube-system
---
# Source: calico/templates/calico-typha.yaml
---
# Source: calico/templates/configure-canal.yaml
---
# Source: calico/templates/kdd-crds.yaml
#修改下面内容
[root@ansible-server calico]# grep "etcd_endpoints:.*" templates/calico-etcd.yaml.j2
etcd_endpoints: "http://<ETCD_IP>:<ETCD_PORT>"
[root@ansible-server calico]# sed -i 's#etcd_endpoints: "http://<ETCD_IP>:<ETCD_PORT>"#etcd_endpoints: "{% for i in groups.master %}https://{{ hostvars[i].ansible_default_ipv4.address }}:2379{% if not loop.last %},{% endif %}{% endfor %}"#g' templates/calico-etcd.yaml.j2
[root@ansible-server calico]# grep "etcd_endpoints:.*" templates/calico-etcd.yaml.j2
etcd_endpoints: {% for i in groups.master %}https://{{ hostvars[i].ansible_default_ipv4.address }}{% if not loop.last %},{% endif %}{% endfor %}
[root@ansible-server calico]# vim tasks/calico_file.yml
- name: copy calico-etcd.yaml file
template:
src: calico-etcd.yaml.j2
dest: /root/calico-etcd.yaml
when:
- ansible_hostname=="k8s-master01"
[root@ansible-server calico]# vim tasks/config.yml
- name: get ETCD_KEY key
shell:
cmd: cat /etc/kubernetes/pki/etcd/server.key | base64 | tr -d '\n'
register: ETCD_KEY
when:
- ansible_hostname=="k8s-master01"
- name: Modify the ".*etcd-key:.*" line
replace:
path: /root/calico-etcd.yaml
regexp: '# (etcd-key:) null'
replace: '\1 {{ ETCD_KEY.stdout }}'
when:
- ansible_hostname=="k8s-master01"
- name: get ETCD_CERT key
shell:
cmd: cat /etc/kubernetes/pki/etcd/server.crt | base64 | tr -d '\n'
register: ETCD_CERT
when:
- ansible_hostname=="k8s-master01"
- name: Modify the ".*etcd-cert:.*" line
replace:
path: /root/calico-etcd.yaml
regexp: '# (etcd-cert:) null'
replace: '\1 {{ ETCD_CERT.stdout }}'
when:
- ansible_hostname=="k8s-master01"
- name: get ETCD_CA key
shell:
cmd: cat /etc/kubernetes/pki/etcd/ca.crt | base64 | tr -d '\n'
when:
- ansible_hostname=="k8s-master01"
register: ETCD_CA
- name: Modify the ".*etcd-ca:.*" line
replace:
path: /root/calico-etcd.yaml
regexp: '# (etcd-ca:) null'
replace: '\1 {{ ETCD_CA.stdout }}'
when:
- ansible_hostname=="k8s-master01"
- name: Modify the ".*etcd_ca:.*" line
replace:
path: /root/calico-etcd.yaml
regexp: '(etcd_ca:) ""'
replace: '\1 "/calico-secrets/etcd-ca"'
when:
- ansible_hostname=="k8s-master01"
- name: Modify the ".*etcd_cert:.*" line
replace:
path: /root/calico-etcd.yaml
regexp: '(etcd_cert:) ""'
replace: '\1 "/calico-secrets/etcd-cert"'
when:
- ansible_hostname=="k8s-master01"
- name: Modify the ".*etcd_key:.*" line
replace:
path: /root/calico-etcd.yaml
regexp: '(etcd_key:) ""'
replace: '\1 "/calico-secrets/etcd-key"'
when:
- ansible_hostname=="k8s-master01"
- name: Modify the ".*CALICO_IPV4POOL_CIDR.*" line
replace:
path: /root/calico-etcd.yaml
regexp: '# (- name: CALICO_IPV4POOL_CIDR)'
replace: '\1'
when:
- ansible_hostname=="k8s-master01"
- name: get POD_SUBNET
shell:
cmd: cat /etc/kubernetes/manifests/kube-controller-manager.yaml | grep cluster-cidr= | awk -F= '{print $NF}'
register: POD_SUBNET
when:
- ansible_hostname=="k8s-master01"
- name: Modify the ".*192.168.0.0.*" line
replace:
path: /root/calico-etcd.yaml
regexp: '# (value:) "192.168.0.0/16"'
replace: ' \1 "{{ POD_SUBNET.stdout }}"'
when:
- ansible_hostname=="k8s-master01"
- name: Modify the "image:" line
replace:
path: /root/calico-etcd.yaml
regexp: '(.*image:) docker.io/calico(/.*)'
replace: '\1 {{ HARBOR_DOMAIN }}/google_containers\2'
when:
- ansible_hostname=="k8s-master01"
[root@ansible-server calico]# vim tasks/download_images.yml
- name: get calico version
shell:
chdir: /root
cmd: awk -F "/" '/image:/{print $NF}' calico-etcd.yaml
register: CALICO_VERSION
when:
- ansible_hostname=="k8s-master01"
- name: download calico image
shell: |
{% for i in CALICO_VERSION.stdout_lines %}
docker pull registry.cn-beijing.aliyuncs.com/raymond9/{{ i }}
docker tag registry.cn-beijing.aliyuncs.com/raymond9/{{ i }} {{ HARBOR_DOMAIN }}/google_containers/{{ i }}
docker rmi registry.cn-beijing.aliyuncs.com/raymond9/{{ i }}
docker push {{ HARBOR_DOMAIN }}/google_containers/{{ i }}
{% endfor %}
when:
- ansible_hostname=="k8s-master01"
[root@ansible-server calico]# vim tasks/install_calico.yml
- name: install calico
shell:
chdir: /root
cmd: "kubectl --kubeconfig=/etc/kubernetes/admin.conf apply -f calico-etcd.yaml"
when:
- ansible_hostname=="k8s-master01"
[root@ansible-server calico]# vim tasks/main.yml
- include: calico_file.yml
- include: config.yml
- include: download_images.yml
- include: install_calico.yml
[root@ansible-server calico]# cd ../../
[root@ansible-server ansible]# tree roles/calico
roles/calico
├── tasks
│ ├── calico_file.yml
│ ├── config.yml
│ ├── download_images.yml
│ ├── install_calico.yml
│ └── main.yml
├── templates
│ └── calico-etcd.yaml.j2
└── vars
└── main.yml
3 directories, 7 files
[root@ansible-server ansible]# vim calico_role.yml
---
- hosts: master
roles:
- role: calico
[root@ansible-server ansible]# ansible-playbook calico_role.yml
15.2 验证calico
[root@k8s-master01 ~]# kubectl get pod -A |grep calico
kube-system calico-kube-controllers-5d8579866c-jnls7 1/1 Running 0 42s
kube-system calico-node-c7lgh 1/1 Running 0 42s
kube-system calico-node-f4ckr 1/1 Running 0 42s
kube-system calico-node-ql5nt 1/1 Running 0 42s
kube-system calico-node-r7cjc 1/1 Running 0 42s
kube-system calico-node-twwl8 1/1 Running 0 42s
kube-system calico-node-xnbw9 1/1 Running 0 42s
[root@k8s-master01 ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
k8s-master01 Ready control-plane,master 8m53s v1.21.8
k8s-master02.example.local Ready control-plane,master 4m25s v1.21.8
k8s-master03.example.local Ready control-plane,master 3m43s v1.21.8
k8s-node01.example.local Ready <none> 2m56s v1.21.8
k8s-node02.example.local Ready <none> 2m44s v1.21.8
k8s-node03.example.local Ready <none> 2m34s v1.21.8
16.安装Metrics
16.1 安装metrics
[root@ansible-server ansible]# mkdir -p roles/metrics/{files,vars,tasks}
[root@ansible-server ansible]# cd roles/metrics/
[root@ansible-server metrics]# ls
files tasks vars
#下面NODE变量改成自己NODE的IP地址，HARBOR_DOMAIN的地址设置成自己的harbor域名地址
[root@ansible-server metrics]# vim vars/main.yml
NODE:
- 172.31.3.108
- 172.31.3.109
- 172.31.3.110
HARBOR_DOMAIN: harbor.raymonds.cc
[root@ansible-server metrics]# cat files/components.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
k8s-app: metrics-server
name: metrics-server
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
k8s-app: metrics-server
rbac.authorization.k8s.io/aggregate-to-admin: "true"
rbac.authorization.k8s.io/aggregate-to-edit: "true"
rbac.authorization.k8s.io/aggregate-to-view: "true"
name: system:aggregated-metrics-reader
rules:
- apiGroups:
- metrics.k8s.io
resources:
- pods
- nodes
verbs:
- get
- list
- watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
k8s-app: metrics-server
name: system:metrics-server
rules:
- apiGroups:
- ""
resources:
- pods
- nodes
- nodes/stats
- namespaces
- configmaps
verbs:
- get
- list
- watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
k8s-app: metrics-server
name: metrics-server-auth-reader
namespace: kube-system
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: extension-apiserver-authentication-reader
subjects:
- kind: ServiceAccount
name: metrics-server
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
k8s-app: metrics-server
name: metrics-server:system:auth-delegator
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:auth-delegator
subjects:
- kind: ServiceAccount
name: metrics-server
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
k8s-app: metrics-server
name: system:metrics-server
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:metrics-server
subjects:
- kind: ServiceAccount
name: metrics-server
namespace: kube-system
---
apiVersion: v1
kind: Service
metadata:
labels:
k8s-app: metrics-server
name: metrics-server
namespace: kube-system
spec:
ports:
- name: https
port: 443
protocol: TCP
targetPort: https
selector:
k8s-app: metrics-server
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
k8s-app: metrics-server
name: metrics-server
namespace: kube-system
spec:
selector:
matchLabels:
k8s-app: metrics-server
strategy:
rollingUpdate:
maxUnavailable: 0
template:
metadata:
labels:
k8s-app: metrics-server
spec:
containers:
- args:
- --cert-dir=/tmp
- --secure-port=4443
- --metric-resolution=30s
- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
image: k8s.gcr.io/metrics-server/metrics-server:v0.4.1
imagePullPolicy: IfNotPresent
livenessProbe:
failureThreshold: 3
httpGet:
path: /livez
port: https
scheme: HTTPS
periodSeconds: 10
name: metrics-server
ports:
- containerPort: 4443
name: https
protocol: TCP
readinessProbe:
failureThreshold: 3
httpGet:
path: /readyz
port: https
scheme: HTTPS
periodSeconds: 10
securityContext:
readOnlyRootFilesystem: true
runAsNonRoot: true
runAsUser: 1000
volumeMounts:
- mountPath: /tmp
name: tmp-dir
nodeSelector:
kubernetes.io/os: linux
priorityClassName: system-cluster-critical
serviceAccountName: metrics-server
volumes:
- emptyDir: {}
name: tmp-dir
---
apiVersion: apiregistration.k8s.io/v1
kind: APIService
metadata:
labels:
k8s-app: metrics-server
name: v1beta1.metrics.k8s.io
spec:
group: metrics.k8s.io
groupPriorityMinimum: 100
insecureSkipTLSVerify: true
service:
name: metrics-server
namespace: kube-system
version: v1beta1
versionPriority: 100
[root@ansible-server metrics]# vim files/components.yaml
...
spec:
containers:
- args:
- --cert-dir=/tmp
- --secure-port=4443
- --metric-resolution=30s
- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
#添加下面内容
- --kubelet-insecure-tls
- --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.crt
- --requestheader-username-headers=X-Remote-User
- --requestheader-group-headers=X-Remote-Group
- --requestheader-extra-headers-prefix=X-Remote-Extra-
...
volumeMounts:
- mountPath: /tmp
name: tmp-dir
#添加下面内容
- name: ca-ssl
mountPath: /etc/kubernetes/pki
...
volumes:
- emptyDir: {}
name: tmp-dir
#添加下面内容
- name: ca-ssl
hostPath:
path: /etc/kubernetes/pki
[root@ansible-server metrics]# vim tasks/metrics_file.yml
- name: copy components.yaml file
copy:
src: components.yaml
dest: /root/components.yaml
[root@ansible-server metrics]# vim tasks/config.yml
- name: transfer front-proxy-ca.crt file from mater01 to node
synchronize:
src: /etc/kubernetes/pki/front-proxy-ca.crt
dest: /etc/kubernetes/pki/front-proxy-ca.crt
mode: pull
delegate_to: "{{ item }}"
loop:
"{{ NODE }}"
- name: Modify the "image:" line
replace:
path: /root/components.yaml
regexp: '(.*image:) k8s.gcr.io/metrics-server(/.*)'
replace: '\1 {{ HARBOR_DOMAIN }}/google_containers\2'
[root@ansible-server metrics]# vim tasks/download_images.yml
- name: get metrics version
shell:
chdir: /root
cmd: awk -F "/" '/image:/{print $NF}' components.yaml
register: METRICS_VERSION
- name: download metrics image
shell: |
{% for i in METRICS_VERSION.stdout_lines %}
docker pull registry.aliyuncs.com/google_containers/{{ i }}
docker tag registry.aliyuncs.com/google_containers/{{ i }} {{ HARBOR_DOMAIN }}/google_containers/{{ i }}
docker rmi registry.aliyuncs.com/google_containers/{{ i }}
docker push {{ HARBOR_DOMAIN }}/google_containers/{{ i }}
{% endfor %}
[root@ansible-server metrics]# vim tasks/install_metrics.yml
- name: install metrics
shell:
chdir: /root
cmd: "kubectl --kubeconfig=/etc/kubernetes/admin.conf apply -f components.yaml"
[root@ansible-server metrics]# vim tasks/main.yml
- include: metrics_file.yml
- include: config.yml
- include: download_images.yml
- include: install_metrics.yml
[root@ansible-server metrics]# cd ../../
[root@ansible-server ansible]# tree roles/metrics/
roles/metrics/
├── files
│ └── components.yaml
├── tasks
│ ├── config.yml
│ ├── download_images.yml
│ ├── install_metrics.yml
│ ├── main.yml
│ └── metrics_file.yml
└── vars
└── main.yml
3 directories, 7 files
[root@ansible-server ansible]# vim metrics_role.yml
---
- hosts: master01
roles:
- role: metrics
[root@ansible-server ansible]# ansible-playbook metrics_role.yml
16.2 验证metrics
[root@k8s-master01 ~]# kubectl get pod -n kube-system |grep metrics
metrics-server-9787b55bd-x75nn 1/1 Running 0 18s
[root@k8s-master01 ~]# kubectl top node --use-protocol-buffers
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
k8s-master01 159m 7% 1542Mi 40%
k8s-master02.example.local 133m 6% 1225Mi 32%
k8s-master03.example.local 141m 7% 1182Mi 30%
k8s-node01.example.local 63m 3% 768Mi 20%
k8s-node02.example.local 62m 3% 762Mi 19%
k8s-node03.example.local 68m 3% 799Mi 20%
17.安装dashboard
17.1 安装dashboard
[root@ansible-server ansible]# mkdir -p roles/dashboard/{tasks,vars,files,templates}
[root@ansible-server ansible]# cd roles/dashboard/
[root@ansible-server dashboard]# ls
files tasks templates vars
#下面HARBOR_DOMAIN的地址设置成自己的harbor域名地址
[root@ansible-server dashboard]# vim vars/main.yml
HARBOR_DOMAIN: harbor.raymonds.cc
NODEPORT: 30005
[root@ansible-server dashboard]# cat templates/recommended.yaml.j2
# Copyright 2017 The Kubernetes Authors.
#
# 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.
apiVersion: v1
kind: Namespace
metadata:
name: kubernetes-dashboard
---
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
---
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
spec:
type: NodePort
ports:
- port: 443
targetPort: 8443
nodePort: {{ NODEPORT }}
selector:
k8s-app: kubernetes-dashboard
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-certs
namespace: kubernetes-dashboard
type: Opaque
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-csrf
namespace: kubernetes-dashboard
type: Opaque
data:
csrf: ""
---
apiVersion: v1
kind: Secret
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-key-holder
namespace: kubernetes-dashboard
type: Opaque
---
kind: ConfigMap
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard-settings
namespace: kubernetes-dashboard
---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
rules:
# Allow Dashboard to get, update and delete Dashboard exclusive secrets.
- apiGroups: [""]
resources: ["secrets"]
resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs", "kubernetes-dashboard-csrf"]
verbs: ["get", "update", "delete"]
# Allow Dashboard to get and update 'kubernetes-dashboard-settings' config map.
- apiGroups: [""]
resources: ["configmaps"]
resourceNames: ["kubernetes-dashboard-settings"]
verbs: ["get", "update"]
# Allow Dashboard to get metrics.
- apiGroups: [""]
resources: ["services"]
resourceNames: ["heapster", "dashboard-metrics-scraper"]
verbs: ["proxy"]
- apiGroups: [""]
resources: ["services/proxy"]
resourceNames: ["heapster", "http:heapster:", "https:heapster:", "dashboard-metrics-scraper", "http:dashboard-metrics-scraper"]
verbs: ["get"]
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
rules:
# Allow Metrics Scraper to get metrics from the Metrics server
- apiGroups: ["metrics.k8s.io"]
resources: ["pods", "nodes"]
verbs: ["get", "list", "watch"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: kubernetes-dashboard
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kubernetes-dashboard
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: kubernetes-dashboard
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: kubernetes-dashboard
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kubernetes-dashboard
---
kind: Deployment
apiVersion: apps/v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
k8s-app: kubernetes-dashboard
template:
metadata:
labels:
k8s-app: kubernetes-dashboard
spec:
containers:
- name: kubernetes-dashboard
image: kubernetesui/dashboard:v2.2.0
imagePullPolicy: Always
ports:
- containerPort: 8443
protocol: TCP
args:
- --auto-generate-certificates
- --namespace=kubernetes-dashboard
# Uncomment the following line to manually specify Kubernetes API server Host
# If not specified, Dashboard will attempt to auto discover the API server and connect
# to it. Uncomment only if the default does not work.
# - --apiserver-host=http://my-address:port
volumeMounts:
- name: kubernetes-dashboard-certs
mountPath: /certs
# Create on-disk volume to store exec logs
- mountPath: /tmp
name: tmp-volume
livenessProbe:
httpGet:
scheme: HTTPS
path: /
port: 8443
initialDelaySeconds: 30
timeoutSeconds: 30
securityContext:
allowPrivilegeEscalation: false
readOnlyRootFilesystem: true
runAsUser: 1001
runAsGroup: 2001
volumes:
- name: kubernetes-dashboard-certs
secret:
secretName: kubernetes-dashboard-certs
- name: tmp-volume
emptyDir: {}
serviceAccountName: kubernetes-dashboard
nodeSelector:
"kubernetes.io/os": linux
# Comment the following tolerations if Dashboard must not be deployed on master
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
---
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: dashboard-metrics-scraper
name: dashboard-metrics-scraper
namespace: kubernetes-dashboard
spec:
ports:
- port: 8000
targetPort: 8000
selector:
k8s-app: dashboard-metrics-scraper
---
kind: Deployment
apiVersion: apps/v1
metadata:
labels:
k8s-app: dashboard-metrics-scraper
name: dashboard-metrics-scraper
namespace: kubernetes-dashboard
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
k8s-app: dashboard-metrics-scraper
template:
metadata:
labels:
k8s-app: dashboard-metrics-scraper
annotations:
seccomp.security.alpha.kubernetes.io/pod: 'runtime/default'
spec:
containers:
- name: dashboard-metrics-scraper
image: kubernetesui/metrics-scraper:v1.0.6
ports:
- containerPort: 8000
protocol: TCP
livenessProbe:
httpGet:
scheme: HTTP
path: /
port: 8000
initialDelaySeconds: 30
timeoutSeconds: 30
volumeMounts:
- mountPath: /tmp
name: tmp-volume
securityContext:
allowPrivilegeEscalation: false
readOnlyRootFilesystem: true
runAsUser: 1001
runAsGroup: 2001
serviceAccountName: kubernetes-dashboard
nodeSelector:
"kubernetes.io/os": linux
# Comment the following tolerations if Dashboard must not be deployed on master
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
volumes:
- name: tmp-volume
emptyDir: {}
[root@ansible-server dashboard]# vim templates/recommended.yaml.j2
...
kind: Service
apiVersion: v1
metadata:
labels:
k8s-app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kubernetes-dashboard
spec:
type: NodePort #添加这行
ports:
- port: 443
targetPort: 8443
nodePort: {{ NODEPORT }} #添加这行
selector:
k8s-app: kubernetes-dashboard
...
[root@ansible-server dashboard]# vim files/admin.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: admin-user
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: admin-user
annotations:
rbac.authorization.kubernetes.io/autoupdate: "true"
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: admin-user
namespace: kube-system
[root@ansible-server dashboard]# vim tasks/dashboard_file.yml
- name: copy recommended.yaml file
template:
src: recommended.yaml.j2
dest: /root/recommended.yaml
- name: copy admin.yaml file
copy:
src: admin.yaml
dest: /root/admin.yaml
[root@ansible-server dashboard]# vim tasks/config.yml
- name: Modify the "image:" line
replace:
path: /root/recommended.yaml
regexp: '(.*image:) kubernetesui(/.*)'
replace: '\1 {{ HARBOR_DOMAIN }}/google_containers\2'
[root@ansible-server dashboard]# vim tasks/download_images.yml
- name: get dashboard version
shell:
chdir: /root
cmd: awk -F "/" '/image:/{print $NF}' recommended.yaml
register: DASHBOARD_VERSION
- name: download dashboard image
shell: |
{% for i in DASHBOARD_VERSION.stdout_lines %}
docker pull registry.aliyuncs.com/google_containers/{{ i }}
docker tag registry.aliyuncs.com/google_containers/{{ i }} {{ HARBOR_DOMAIN }}/google_containers/{{ i }}
docker rmi registry.aliyuncs.com/google_containers/{{ i }}
docker push {{ HARBOR_DOMAIN }}/google_containers/{{ i }}
{% endfor %}
[root@ansible-server dashboard]# vim tasks/install_dashboard.yml
- name: install dashboard
shell:
chdir: /root
cmd: "kubectl --kubeconfig=/etc/kubernetes/admin.conf apply -f recommended.yaml -f admin.yaml"
[root@ansible-server dashboard]# vim tasks/main.yml
- include: dashboard_file.yml
- include: config.yml
- include: download_images.yml
- include: install_dashboard.yml
[root@ansible-server dashboard]# cd ../../
[root@ansible-server ansible]# tree roles/dashboard/
roles/dashboard/
├── files
│ └── admin.yaml
├── tasks
│ ├── config.yml
│ ├── dashboard_file.yml
│ ├── download_images.yml
│ ├── install_dashboard.yml
│ └── main.yml
├── templates
│ └── recommended.yaml.j2
└── vars
└── main.yml
4 directories, 8 files
[root@ansible-server ansible]# vim dashboard_role.yml
---
- hosts: master01
roles:
- role: dashboard
[root@ansible-server ansible]# ansible-playbook dashboard_role.yml
17.2 登录dashboard
https://172.31.3.101:30005
查看token值：
[root@k8s-master01 ~]# kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk '{print $1}')
Name: admin-user-token-4cgk2
Namespace: kube-system
Labels: <none>
Annotations: kubernetes.io/service-account.name: admin-user
kubernetes.io/service-account.uid: 8ea51eb9-5c85-47f8-afef-d087162d6168
Type: kubernetes.io/service-account-token
Data
====
token: eyJhbGciOiJSUzI1NiIsImtpZCI6ImhlemE5UEhFc0w2VWZabzlUV2k5c1RaQzZZbmxzMThmZ05ldkpnbWZGeUkifQ.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJrdWJlLXN5c3RlbSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VjcmV0Lm5hbWUiOiJhZG1pbi11c2VyLXRva2VuLTRjZ2syIiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZXJ2aWNlLWFjY291bnQubmFtZSI6ImFkbWluLXVzZXIiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC51aWQiOiI4ZWE1MWViOS01Yzg1LTQ3ZjgtYWZlZi1kMDg3MTYyZDYxNjgiLCJzdWIiOiJzeXN0ZW06c2VydmljZWFjY291bnQ6a3ViZS1zeXN0ZW06YWRtaW4tdXNlciJ9.YQVpRA-laaOkOPKnKcHRuOsTj7bNiu-1woJlOC-OWu6mrwOvHGnxC7ru5ugwXQxYDbJXgVX3CzQDbZ1j_6RI4SdvC2H28E2GNtUxVLfKaRMBIiQ1aWv6OmYlQMINqfjd6ZR7m9gwO0iLKkMSrwxZw19ydE0ZlymkImeboSjST0z4nXZvSsRcuZjR52mOLru75E3bYCUiPWAypRRI3z0ZHl_JZ9Lurq3jWlxD_ooYQ17_qVcK_ymc3FxkiGQ9NcMPo3WdQEa-YVOQa7K1_SWMkRBYnOEB-NNvi9SQerWmAglndd9DsBGB3n63BlI05gtfUiH0lUBuj7FIyP7tYYMPdA
ca.crt: 1066 bytes
namespace: 11 bytes
18.一些必须的配置更改
将Kube-proxy改为ipvs模式，因为在初始化集群的时候注释了ipvs配置，所以需要自行修改一下：
在master01节点执行
[root@k8s-master01 ~]# curl 127.0.0.1:10249/proxyMode
iptables
[root@k8s-master01 ~]# kubectl edit cm kube-proxy -n kube-system
mode: "ipvs"
更新Kube-Proxy的Pod：
[root@k8s-master01 ~]# kubectl patch daemonset kube-proxy -p "{\"spec\":{\"template\":{\"metadata\":{\"annotations\":{\"date\":\"`date +'%s'`\"}}}}}" -n kube-system
daemonset.apps/kube-proxy patched
验证Kube-Proxy模式
[root@k8s-master01 ~]# curl 127.0.0.1:10249/proxyMode
ipvs
[root@k8s-master01 ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 172.17.0.1:30005 rr
-> 192.169.111.130:8443 Masq 1 0 0
TCP 172.31.3.101:30005 rr
-> 192.169.111.130:8443 Masq 1 0 0
TCP 192.162.55.64:30005 rr
-> 192.169.111.130:8443 Masq 1 0 0
TCP 10.96.0.1:443 rr
-> 172.31.3.101:6443 Masq 1 0 0
-> 172.31.3.102:6443 Masq 1 0 0
-> 172.31.3.103:6443 Masq 1 0 0
TCP 10.96.0.10:53 rr
-> 192.167.195.129:53 Masq 1 0 0
-> 192.169.111.129:53 Masq 1 0 0
TCP 10.96.0.10:9153 rr
-> 192.167.195.129:9153 Masq 1 0 0
-> 192.169.111.129:9153 Masq 1 0 0
TCP 10.99.1.2:8000 rr
-> 192.167.195.130:8000 Masq 1 0 0
TCP 10.101.227.108:443 rr
-> 192.169.111.130:8443 Masq 1 0 0
TCP 10.109.223.212:443 rr
-> 192.170.21.193:4443 Masq 1 0 0
TCP 127.0.0.1:30005 rr
-> 192.169.111.130:8443 Masq 1 0 0
UDP 10.96.0.10:53 rr
-> 192.167.195.129:53 Masq 1 0 0
-> 192.169.111.129:53 Masq 1 0 0
