介绍
大多数情况下，单主节点集群大致足以供开发和测试环境使用。但是，对于生产环境，您需要考虑集群的高可用性。如果关键组件（例如 kube-apiserver、kube-scheduler 和 kube-controller-manager）都在同一个主节点上运行，一旦主节点宕机，Kubernetes 和 KubeSphere 都将不可用。因此，您需要为多个主节点配置负载均衡器，以创建高可用集群。您可以使用任意云负载均衡器或者任意硬件负载均衡器（例如 F5）。此外，也可以使用 Keepalived 和 HAproxy，或者 Nginx 来创建高可用集群。
架构
在您开始操作前，请确保准备了 6 台 Linux 机器，其中 3 台充当主节点，另外 3 台充当工作节点。下图展示了这些机器的详情，包括它们的私有 IP 地址和角色。
配置负载均衡器
您必须在您的环境中创建一个负载均衡器来监听（在某些云平台也称作监听器）关键端口。建议监听下表中的端口。
服务 协议 端口
apiserver TCP 6443
ks-console TCP 30880
http TCP 80
https TCP 443
配置免密
root@hello:~# ssh-keygen
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
root@hello:~# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
下载 KubeKey
Kubekey 是新一代安装程序，可以简单、快速和灵活地安装 Kubernetes 和 KubeSphere。
root@cby:~# export KKZONE=cn
root@cby:~# curl -sfL https://get-kk.kubesphere.io | VERSION=v1.2.0 sh -
Downloading kubekey v1.2.0 from https://kubernetes.pek3b.qingstor.com/kubekey/releases/download/v1.2.0/kubekey-v1.2.0-linux-amd64.tar.gz ...
Kubekey v1.2.0 Download Complete!
为 kk 添加可执行权限
root@cby:~# chmod +x kk
root@cby:~# ./kk create config --with-kubesphere v3.2.0 --with-kubernetes v1.22.1
部署 KubeSphere 和 Kubernetes
root@cby:~# vim config-sample.yaml
root@cby:~#
root@cby:~#
root@cby:~# cat config-sample.yaml
apiVersion: kubekey.kubesphere.io/v1alpha1
kind: Cluster
metadata:
name: sample
spec:
hosts:
- {name: master1, address: 192.168.1.10, internalAddress: 192.168.1.10, user: root, password: Cby123..}
- {name: master2, address: 192.168.1.11, internalAddress: 192.168.1.11, user: root, password: Cby123..}
- {name: master3, address: 192.168.1.12, internalAddress: 192.168.1.12, user: root, password: Cby123..}
- {name: node1, address: 192.168.1.13, internalAddress: 192.168.1.13, user: root, password: Cby123..}
- {name: node2, address: 192.168.1.14, internalAddress: 192.168.1.14, user: root, password: Cby123..}
- {name: node3, address: 192.168.1.15, internalAddress: 192.168.1.15, user: root, password: Cby123..}
- {name: node4, address: 192.168.1.16, internalAddress: 192.168.1.16, user: root, password: Cby123..}
- {name: node5, address: 192.168.1.51, internalAddress: 192.168.1.51, user: root, password: Cby123..}
- {name: node6, address: 192.168.1.52, internalAddress: 192.168.1.52, user: root, password: Cby123..}
- {name: node7, address: 192.168.1.53, internalAddress: 192.168.1.53, user: root, password: Cby123..}
- {name: node8, address: 192.168.1.54, internalAddress: 192.168.1.54, user: root, password: Cby123..}
- {name: node9, address: 192.168.1.55, internalAddress: 192.168.1.55, user: root, password: Cby123..}
- {name: node10, address: 192.168.1.56, internalAddress: 192.168.1.56, user: root, password: Cby123..}
- {name: node11, address: 192.168.1.57, internalAddress: 192.168.1.57, user: root, password: Cby123..}
roleGroups:
etcd:
- master1
- master2
- master3
master:
- master1
- master2
- master3
worker:
- node1
- node2
- node3
- node4
- node5
- node6
- node7
- node8
- node9
- node10
- node11
controlPlaneEndpoint:
##Internal loadbalancer for apiservers
#internalLoadbalancer: haproxy
domain: lb.kubesphere.local
address: "192.168.1.20"
port: 6443
kubernetes:
version: v1.22.1
clusterName: cluster.local
network:
plugin: calico
kubePodsCIDR: 10.233.64.0/18
kubeServiceCIDR: 10.233.0.0/18
registry:
registryMirrors: []
insecureRegistries: []
addons: []
---
apiVersion: installer.kubesphere.io/v1alpha1
kind: ClusterConfiguration
metadata:
name: ks-installer
namespace: kubesphere-system
labels:
version: v3.2.0
spec:
persistence:
storageClass: ""
authentication:
jwtSecret: ""
local_registry: ""
# dev_tag: ""
etcd:
monitoring: false
endpointIps: localhost
port: 2379
tlsEnable: true
common:
core:
console:
enableMultiLogin: true
port: 30880
type: NodePort
# apiserver:
# resources: {}
# controllerManager:
# resources: {}
redis:
enabled: false
volumeSize: 2Gi
openldap:
enabled: false
volumeSize: 2Gi
minio:
volumeSize: 20Gi
monitoring:
# type: external
endpoint: http://prometheus-operated.kubesphere-monitoring-system.svc:9090
GPUMonitoring:
enabled: false
gpu:
kinds:
- resourceName: "nvidia.com/gpu"
resourceType: "GPU"
default: true
es:
# master:
# volumeSize: 4Gi
# replicas: 1
# resources: {}
# data:
# volumeSize: 20Gi
# replicas: 1
# resources: {}
logMaxAge: 7
elkPrefix: logstash
basicAuth:
enabled: false
username: ""
password: ""
externalElasticsearchUrl: ""
externalElasticsearchPort: ""
alerting:
enabled: false
# thanosruler:
# replicas: 1
# resources: {}
auditing:
enabled: false
# operator:
# resources: {}
# webhook:
# resources: {}
devops:
enabled: false
jenkinsMemoryLim: 2Gi
jenkinsMemoryReq: 1500Mi
jenkinsVolumeSize: 8Gi
jenkinsJavaOpts_Xms: 512m
jenkinsJavaOpts_Xmx: 512m
jenkinsJavaOpts_MaxRAM: 2g
events:
enabled: false
# operator:
# resources: {}
# exporter:
# resources: {}
# ruler:
# enabled: false
# replicas: 2
# resources: {}
logging:
enabled: false
containerruntime: docker
logsidecar:
enabled: false
replicas: 2
# resources: {}
metrics_server:
enabled: false
monitoring:
storageClass: ""
# kube_rbac_proxy:
# resources: {}
# kube_state_metrics:
# resources: {}
# prometheus:
# replicas: 1
# volumeSize: 20Gi
# resources: {}
# operator:
# resources: {}
# adapter:
# resources: {}
# node_exporter:
# resources: {}
# alertmanager:
# replicas: 1
# resources: {}
# notification_manager:
# resources: {}
# operator:
# resources: {}
# proxy:
# resources: {}
gpu:
nvidia_dcgm_exporter:
enabled: false
# resources: {}
multicluster:
clusterRole: none
network:
networkpolicy:
enabled: false
ippool:
type: none
topology:
type: none
openpitrix:
store:
enabled: false
servicemesh:
enabled: false
kubeedge:
enabled: false
cloudCore:
nodeSelector: {"node-role.kubernetes.io/worker": ""}
tolerations: []
cloudhubPort: "10000"
cloudhubQuicPort: "10001"
cloudhubHttpsPort: "10002"
cloudstreamPort: "10003"
tunnelPort: "10004"
cloudHub:
advertiseAddress:
- ""
nodeLimit: "100"
service:
cloudhubNodePort: "30000"
cloudhubQuicNodePort: "30001"
cloudhubHttpsNodePort: "30002"
cloudstreamNodePort: "30003"
tunnelNodePort: "30004"
edgeWatcher:
nodeSelector: {"node-role.kubernetes.io/worker": ""}
tolerations: []
edgeWatcherAgent:
nodeSelector: {"node-role.kubernetes.io/worker": ""}
tolerations: []
root@cby:~#
若是haproxy配置如下：
frontend kube-apiserver
bind *:6443
mode tcp
option tcplog
default_backend kube-apiserver
backend kube-apiserver
mode tcp
option tcplog
option tcp-check
balance roundrobin
default-server inter 10s downinter 5s rise 2 fall 2 slowstart 60s maxconn 250 maxqueue 256 weight 100
server kube-apiserver-1 192.168.1.10:6443 check
server kube-apiserver-2 192.168.1.11:6443 check
server kube-apiserver-3 192.168.1.12:6443 check
安装所需环境
root@hello:~# bash -x 1.sh
root@hello:~# cat 1.sh
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
ssh [email protected] "apt update && apt install sudo curl openssl ebtables socat ipset conntrack nfs-common -y"
开始安装
配置完成后，您可以执行以下命令来开始安装：
root@hello:~# ./kk create cluster -f config-sample.yaml
+---------+------+------+---------+----------+-------+-------+-----------+--------+------------+-------------+------------------+--------------+
| name | sudo | curl | openssl | ebtables | socat | ipset | conntrack | docker | nfs client | ceph client | glusterfs client | time |
+---------+------+------+---------+----------+-------+-------+-----------+--------+------------+-------------+------------------+--------------+
| node3 | y | y | y | y | y | y | y | | y | | | UTC 13:26:01 |
| node1 | y | y | y | y | y | y | y | | y | | | UTC 13:26:01 |
| node4 | y | y | y | y | y | y | y | | y | | | UTC 13:26:01 |
| node8 | y | y | y | y | y | y | y | | y | | | UTC 13:26:01 |
| node11 | y | y | y | y | y | y | y | | y | | | UTC 13:26:01 |
| master1 | y | y | y | y | y | y | y | | y | | | UTC 13:26:00 |
| node5 | y | y | y | y | y | y | y | | y | | | UTC 13:26:00 |
| master2 | y | y | y | y | y | y | y | | y | | | UTC 13:26:00 |
| node2 | y | y | y | y | y | y | y | | y | | | UTC 13:26:01 |
| node7 | y | y | y | y | y | y | y | | y | | | UTC 13:26:00 |
| master3 | y | y | y | y | y | y | y | | y | | | UTC 13:26:01 |
| node6 | y | y | y | y | y | y | y | | y | | | UTC 13:26:01 |
| node9 | y | y | y | y | y | y | y | | y | | | UTC 13:26:01 |
| node10 | y | y | y | y | y | y | y | | y | | | UTC 13:26:01 |
+---------+------+------+---------+----------+-------+-------+-----------+--------+------------+-------------+------------------+--------------+
This is a simple check of your environment.
Before installation, you should ensure that your machines meet all requirements specified at
https://github.com/kubesphere/kubekey#requirements-and-recommendations
Continue this installation? [yes/no]: yes
INFO[13:26:06 UTC] Downloading Installation Files
INFO[13:26:06 UTC] Downloading kubeadm ...
---略---
验证安装
运行以下命令查看安装日志。
root@cby:~# kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -f
**************************************************
Collecting installation results ...
#####################################################
### Welcome to KubeSphere! ###
#####################################################
Console: http://192.168.1.10:30880
Account: admin
Password: P@88w0rd
NOTES：
1. After you log into the console, please check the
monitoring status of service components in
"Cluster Management". If any service is not
ready, please wait patiently until all components
are up and running.
2. Please change the default password after login.
#####################################################
https://kubesphere.io 2021-11-10 10:24:00
#####################################################
root@hello:~# kubectl get node
NAME STATUS ROLES AGE VERSION
master1 Ready control-plane,master 30m v1.22.1
master2 Ready control-plane,master 29m v1.22.1
master3 Ready control-plane,master 29m v1.22.1
node1 Ready worker 29m v1.22.1
node10 Ready worker 29m v1.22.1
node11 Ready worker 29m v1.22.1
node2 Ready worker 29m v1.22.1
node3 Ready worker 29m v1.22.1
node4 Ready worker 29m v1.22.1
node5 Ready worker 29m v1.22.1
node6 Ready worker 29m v1.22.1
node7 Ready worker 30m v1.22.1
node8 Ready worker 30m v1.22.1
node9 Ready worker 29m v1.22.1在安装后启用插件
使用 admin 用户登录控制台。点击左上角的平台管理，然后选择集群管理。
点击 CRD，然后在搜索栏中输入 clusterconfiguration。点击搜索结果查看其详情页。
在自定义资源中，点击 ks-installer 右侧的 ，然后选择编辑 YAML。
apiVersion: installer.kubesphere.io/v1alpha1
kind: ClusterConfiguration
metadata:
annotations:
kubectl.kubernetes.io/last-applied-configuration: >
{"apiVersion":"installer.kubesphere.io/v1alpha1","kind":"ClusterConfiguration","metadata":{"annotations":{},"labels":{"version":"v3.2.0"},"name":"ks-installer","namespace":"kubesphere-system"},"spec":{"alerting":{"enabled":false},"auditing":{"enabled":false},"authentication":{"jwtSecret":""},"common":{"core":{"console":{"enableMultiLogin":true,"port":30880,"type":"NodePort"}},"es":{"basicAuth":{"enabled":false,"password":"","username":""},"elkPrefix":"logstash","externalElasticsearchPort":"","externalElasticsearchUrl":"","logMaxAge":7},"gpu":{"kinds":[{"default":true,"resourceName":"nvidia.com/gpu","resourceType":"GPU"}]},"minio":{"volumeSize":"20Gi"},"monitoring":{"GPUMonitoring":{"enabled":false},"endpoint":"http://prometheus-operated.kubesphere-monitoring-system.svc:9090"},"openldap":{"enabled":false,"volumeSize":"2Gi"},"redis":{"enabled":false,"volumeSize":"2Gi"}},"devops":{"enabled":false,"jenkinsJavaOpts_MaxRAM":"2g","jenkinsJavaOpts_Xms":"512m","jenkinsJavaOpts_Xmx":"512m","jenkinsMemoryLim":"2Gi","jenkinsMemoryReq":"1500Mi","jenkinsVolumeSize":"8Gi"},"etcd":{"endpointIps":"192.168.1.10,192.168.1.11,192.168.1.12","monitoring":false,"port":2379,"tlsEnable":true},"events":{"enabled":false},"kubeedge":{"cloudCore":{"cloudHub":{"advertiseAddress":[""],"nodeLimit":"100"},"cloudhubHttpsPort":"10002","cloudhubPort":"10000","cloudhubQuicPort":"10001","cloudstreamPort":"10003","nodeSelector":{"node-role.kubernetes.io/worker":""},"service":{"cloudhubHttpsNodePort":"30002","cloudhubNodePort":"30000","cloudhubQuicNodePort":"30001","cloudstreamNodePort":"30003","tunnelNodePort":"30004"},"tolerations":[],"tunnelPort":"10004"},"edgeWatcher":{"edgeWatcherAgent":{"nodeSelector":{"node-role.kubernetes.io/worker":""},"tolerations":[]},"nodeSelector":{"node-role.kubernetes.io/worker":""},"tolerations":[]},"enabled":false},"logging":{"containerruntime":"docker","enabled":false,"logsidecar":{"enabled":false,"replicas":2}},"metrics_server":{"enabled":false},"monitoring":{"gpu":{"nvidia_dcgm_exporter":{"enabled":false}},"storageClass":""},"multicluster":{"clusterRole":"none"},"network":{"ippool":{"type":"none"},"networkpolicy":{"enabled":false},"topology":{"type":"none"}},"openpitrix":{"store":{"enabled":false}},"persistence":{"storageClass":""},"servicemesh":{"enabled":false}}}
labels:
version: v3.2.0
name: ks-installer
namespace: kubesphere-system
spec:
alerting:
enabled: true
auditing:
enabled: true
authentication:
jwtSecret: ''
common:
core:
console:
enableMultiLogin: true
port: 30880
type: NodePort
es:
basicAuth:
enabled: true
password: ''
username: ''
elkPrefix: logstash
externalElasticsearchPort: ''
externalElasticsearchUrl: ''
logMaxAge: 7
gpu:
kinds:
- default: true
resourceName: nvidia.com/gpu
resourceType: GPU
minio:
volumeSize: 20Gi
monitoring:
GPUMonitoring:
enabled: true
endpoint: 'http://prometheus-operated.kubesphere-monitoring-system.svc:9090'
openldap:
enabled: true
volumeSize: 2Gi
redis:
enabled: true
volumeSize: 2Gi
devops:
enabled: true
jenkinsJavaOpts_MaxRAM: 2g
jenkinsJavaOpts_Xms: 512m
jenkinsJavaOpts_Xmx: 512m
jenkinsMemoryLim: 2Gi
jenkinsMemoryReq: 1500Mi
jenkinsVolumeSize: 8Gi
etcd:
endpointIps: '192.168.1.10,192.168.1.11,192.168.1.12'
monitoring: false
port: 2379
tlsEnable: true
events:
enabled: true
kubeedge:
cloudCore:
cloudHub:
advertiseAddress:
- ''
nodeLimit: '100'
cloudhubHttpsPort: '10002'
cloudhubPort: '10000'
cloudhubQuicPort: '10001'
cloudstreamPort: '10003'
nodeSelector:
node-role.kubernetes.io/worker: ''
service:
cloudhubHttpsNodePort: '30002'
cloudhubNodePort: '30000'
cloudhubQuicNodePort: '30001'
cloudstreamNodePort: '30003'
tunnelNodePort: '30004'
tolerations: []
tunnelPort: '10004'
edgeWatcher:
edgeWatcherAgent:
nodeSelector:
node-role.kubernetes.io/worker: ''
tolerations: []
nodeSelector:
node-role.kubernetes.io/worker: ''
tolerations: []
enabled: true
logging:
containerruntime: docker
enabled: true
logsidecar:
enabled: true
replicas: 2
metrics_server:
enabled: true
monitoring:
gpu:
nvidia_dcgm_exporter:
enabled: true
storageClass: ''
multicluster:
clusterRole: none
network:
ippool:
type: weave-scope
networkpolicy:
enabled: true
topology:
type: none
openpitrix:
store:
enabled: true
persistence:
storageClass: ''
servicemesh:
enabled: true
批量将所有服务器设置阿里云加速
root@hello:~# vim 8
root@hello:~# cat 8
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://ted9wxpi.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker
root@hello:~# vim 7
root@hello:~# cat 7
scp 8 [email protected]:
scp 8 [email protected]:
scp 8 [email protected]:
scp 8 [email protected]:
scp 8 [email protected]:
scp 8 [email protected]:
scp 8 [email protected]:
scp 8 [email protected]:
scp 8 [email protected]:
scp 8 [email protected]:
scp 8 [email protected]:
scp 8 [email protected]:
scp 8 [email protected]:
root@hello:~# bash -x 7
root@hello:~# vim 6
root@hello:~# cat 6
ssh [email protected] "bash -x 8"
ssh [email protected] "bash -x 8"
ssh [email protected] "bash -x 8"
ssh [email protected] "bash -x 8"
ssh [email protected] "bash -x 8"
ssh [email protected] "bash -x 8"
ssh [email protected] "bash -x 8"
ssh [email protected] "bash -x 8"
ssh [email protected] "bash -x 8"
ssh [email protected] "bash -x 8"
ssh [email protected] "bash -x 8"
ssh [email protected] "bash -x 8"
ssh [email protected] "bash -x 8"
ssh [email protected] "bash -x 8"
root@hello:~# bash -x 6
查看node节点
root@hello:~# kubectl get node
NAME STATUS ROLES AGE VERSION
master1 Ready control-plane,master 11h v1.22.1
master2 Ready control-plane,master 11h v1.22.1
master3 Ready control-plane,master 11h v1.22.1
node1 Ready worker 11h v1.22.1
node10 Ready worker 11h v1.22.1
node11 Ready worker 11h v1.22.1
node2 Ready worker 11h v1.22.1
node3 Ready worker 11h v1.22.1
node4 Ready worker 11h v1.22.1
node5 Ready worker 11h v1.22.1
node6 Ready worker 11h v1.22.1
node7 Ready worker 11h v1.22.1
node8 Ready worker 11h v1.22.1
node9 Ready worker 11h v1.22.1
root@hello:~#
root@hello:~#
