我们基于kubekey 1.0.1做了本地化修改，那为什么要做本地化修改呢？
实际上kubekey 1.0.1 部署kubesphere流程如下：
- 检测依赖安装情况
- 部署kubernetes集群
- 部署存储插件（默认openebs localPV）
- 部署kubesphere
如下
createTasks := []manager.Task{
{Task: preinstall.Precheck, ErrMsg: "Failed to precheck"},
{Task: preinstall.DownloadBinaries, ErrMsg: "Failed to download kube binaries"},
{Task: preinstall.InitOS, ErrMsg: "Failed to init OS"},
{Task: docker.InstallerDocker, ErrMsg: "Failed to install docker"},
{Task: preinstall.PrePullImages, ErrMsg: "Failed to pre-pull images"},
{Task: etcd.GenerateEtcdCerts, ErrMsg: "Failed to generate etcd certs"},
{Task: etcd.SyncEtcdCertsToMaster, ErrMsg: "Failed to sync etcd certs"},
{Task: etcd.GenerateEtcdService, ErrMsg: "Failed to create etcd service"},
{Task: etcd.SetupEtcdCluster, ErrMsg: "Failed to start etcd cluster"},
{Task: etcd.RefreshEtcdConfig, ErrMsg: "Failed to refresh etcd configuration"},
{Task: etcd.BackupEtcd, ErrMsg: "Failed to backup etcd data"},
{Task: kubernetes.GetClusterStatus, ErrMsg: "Failed to get cluster status"},
{Task: kubernetes.InstallKubeBinaries, ErrMsg: "Failed to install kube binaries"},
{Task: kubernetes.InitKubernetesCluster, ErrMsg: "Failed to init kubernetes cluster"},
{Task: network.DeployNetworkPlugin, ErrMsg: "Failed to deploy network plugin"},
{Task: kubernetes.JoinNodesToCluster, ErrMsg: "Failed to join node"},
{Task: addons.InstallAddons, ErrMsg: "Failed to deploy addons"},
{Task: kubesphere.DeployLocalVolume, ErrMsg: "Failed to deploy localVolume"},
{Task: kubesphere.DeployKubeSphere, ErrMsg: "Failed to deploy kubesphere"},
}
1.部署分离
我们修改了pkg/install/install.go部分内容, 首先将部署存储与kubesphere流程摘除，此时kubekey只是用来部署kubernetes集群
createTasks := []manager.Task{
{Task: preinstall.CheckOfflineBinaries, ErrMsg: "Failed to find kube offline binaries"},
//{Task: preinstall.DetectKernel, ErrMsg: "Failed to check kernel"},
{Task: preinstall.InitYum, ErrMsg: "Failed to config yum"},
{Task: preinstall.InitTime, ErrMsg: "Failed to config time"},
{Task: preinstall.Precheck, ErrMsg: "Failed to precheck"},
{Task: preinstall.InitOS, ErrMsg: "Failed to init OS"},
{Task: docker.InstallerDocker, ErrMsg: "Failed to install docker"},
{Task: docker.ConfigDocker, ErrMsg: "Failed to config docker"},
{Task: preinstall.PrePullImages, ErrMsg: "Failed to pre-pull images"},
{Task: etcd.GenerateEtcdCerts, ErrMsg: "Failed to generate etcd certs"},
{Task: etcd.SyncEtcdCertsToMaster, ErrMsg: "Failed to sync etcd certs"},
{Task: etcd.GenerateEtcdService, ErrMsg: "Failed to create etcd service"},
{Task: etcd.SetupEtcdCluster, ErrMsg: "Failed to start etcd cluster"},
{Task: etcd.RefreshEtcdConfig, ErrMsg: "Failed to refresh etcd configuration"},
{Task: etcd.BackupEtcd, ErrMsg: "Failed to backup etcd data"},
{Task: kubernetes.GetClusterStatus, ErrMsg: "Failed to get cluster status"},
{Task: kubernetes.InstallKubeBinaries, ErrMsg: "Failed to install kube binaries"},
{Task: kubernetes.InitKubernetesCluster, ErrMsg: "Failed to init kubernetes cluster"},
{Task: network.DeployNetworkPlugin, ErrMsg: "Failed to deploy network plugin"},
{Task: kubernetes.JoinNodesToCluster, ErrMsg: "Failed to join node"},
{Task: addons.InstallAddons, ErrMsg: "Failed to deploy addons"},
// 重写配置
//{Task: kubernetes.OverwriteKubeletConfig, ErrMsg: "Failed to overwrite config"},
//{Task: kubesphere.DeployCephVolume, ErrMsg: "Failed to deploy cephVolume"},
//{Task: kubesphere.DeployLocalVolume, ErrMsg: "Failed to deploy localVolume"},
//{Task: kubesphere.DeployKubeSphere, ErrMsg: "Failed to deploy kubesphere"},
}
2.自定义运行时配置
这里说的运行时配置是指/etc/docker/daemon.json，实际使用过程中我们对该配置进行了一些变更。
{
"log-opts": {
"max-size": "500m",
"max-file":"3"
},
"userland-proxy": false,
"live-restore": true,
"default-ulimits": {
"nofile": {
"Hard": 65535,
"Name": "nofile",
"Soft": 65535
}
},
"default-address-pools": [
{
"base": "172.80.0.0/16",
"size": 24
},
{
"base": "172.90.0.0/16",
"size": 24
}
],
"default-gateway": "",
"default-gateway-v6": "",
"default-runtime": "runc",
"default-shm-size": "64M",
{{- if .DataPath }}
"data-root": "{{ .DataPath }}",
{{- end}}
{{- if .Mirrors }}
"registry-mirrors": [{{ .Mirrors }}],
{{- end}}
{{- if .InsecureRegistries }}
"insecure-registries": [{{ .InsecureRegistries }}],
{{- end}}
"exec-opts": ["native.cgroupdriver=systemd"]
}
主要通过修改ConfigDocker函数实现
func ExecTasks(mgr *manager.Manager) error {
createTasks := []manager.Task{
...
{Task: docker.ConfigDocker, ErrMsg: "Failed to config docker"},
}
...
}
3.镜像添加私有域名
kubesphere所使用的镜像tag列表如下(部分镜像)
kubesphere/kube-apiserver:v1.20.4
kubesphere/kube-scheduler:v1.20.4
kubesphere/kube-proxy:v1.20.4
kubesphere/kube-controller-manager:v1.20.4
kubesphere/kube-apiserver:v1.19.8
kubesphere/kube-scheduler:v1.19.8
kubesphere/kube-proxy:v1.19.8
kubesphere/kube-controller-manager:v1.19.8
kubesphere/kube-apiserver:v1.19.9
kubesphere/kube-scheduler:v1.19.9
kubesphere/kube-proxy:v1.19.9
kubesphere/kube-controller-manager:v1.19.9
kubesphere/kube-apiserver:v1.18.6
kubesphere/kube-scheduler:v1.18.6
由于实际投产环境为离线环境，这些镜像在该场景下无法正常拉取到，所以我们对这些镜像添加了自定义域名，以私有镜像库（harbor）的方式进行管理。
修改后的镜像tag如下
harbor.wl.io/kubesphere/kube-apiserver:v1.20.4
harbor.wl.io/kubesphere/kube-scheduler:v1.20.4
harbor.wl.io/kubesphere/kube-proxy:v1.20.4
harbor.wl.io/kubesphere/kube-controller-manager:v1.20.4
harbor.wl.io/kubesphere/kube-apiserver:v1.19.8
harbor.wl.io/kubesphere/kube-scheduler:v1.19.8
harbor.wl.io/kubesphere/kube-proxy:v1.19.8
harbor.wl.io/kubesphere/kube-controller-manager:v1.19.8
harbor.wl.io/kubesphere/kube-apiserver:v1.19.9
harbor.wl.io/kubesphere/kube-scheduler:v1.19.9
harbor.wl.io/kubesphere/kube-proxy:v1.19.9
harbor.wl.io/kubesphere/kube-controller-manager:v1.19.9
harbor.wl.io/kubesphere/kube-apiserver:v1.18.6
harbor.wl.io/kubesphere/kube-scheduler:v1.18.6
并通过kubekey在部署阶段，添加自定义host解析（/etc/hosts）
我们在对kubekey本地化后的配置样例如下
apiVersion: kubekey.kubesphere.io/v1alpha1
kind: Cluster
metadata:
name: sample
spec:
hosts:
- {name: node1, address: 192.168.1.11, internalAddress: 192.168.1.11, user: root, password: 123456}
- {name: node2, address: 192.168.1.12, internalAddress: 192.168.1.12, user: root, password: 123456}
- {name: node3, address: 192.168.1.13, internalAddress: 192.168.1.13, user: root, password: 123456}
roleGroups:
etcd:
- node1-3
master:
- node1-3
worker:
- node1-3
controlPlaneEndpoint:
domain: lb.kubesphere.local
address: "192.168.1.111"
port: "6443"
externalHarbor:
domain: 123456
address: 192.168.1.114
user: admin
password: 123456
kubernetes:
version: v1.18.6
imageRepo: kubesphere
clusterName: cluster.local
network:
plugin: calico
kubePodsCIDR: 10.233.64.0/18
kubeServiceCIDR: 10.233.0.0/18
docker:
DataPath: /data
storage:
type: local
ceph:
id: 90140a86-58c9-41ce-8825-c4123bc52edd
monitors:
- 192.168.1.69:6789
- 192.168.1.70:6789
- 192.168.1.71:6789
userID: kubernetes
userKey: AQB1dFFgVJSnBhAAtJOOKOVU78aWN2iudY8QDw==
adminKey: AQDlcFFges49BxAA0xAYat3tzyMHRZ4LNJqqIw==
fsName: cephfs-paas
pools:
rbdDelete: rbd-paas-pool
rbdRetain: rbd-paas-pool-retain
fs: cephfs-paas-pool
registry:
registryMirrors:
- http://harbor.wl.io
insecureRegistries:
- harbor.wl.io
privateRegistry: harbor.wl.io
addons: []