K8s 管理系统项目[API部分–Deployment]
1. 实现接口
service/dataselector.go
package service
import (
"sort"
"strings"
"time"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
)
// dataselector 用于排序,过滤,分页的数据类型
type dataSelector struct {
GenericDataList []DataCell
DataSelect *DataSelectQuery
}
// DataCell 接口,用于各种资源List的类型转换,转换后可以使用dataselector的排序,过滤,分页方法
type DataCell interface {
GetCreation() time.Time
GetName() string
}
// DataSelectQuery 定义过滤和分页的结构体,过滤:Name 分页:Limit和Page
type DataSelectQuery struct {
Filter *FilterQuery
Paginate *PaginateQuery
}
// FilterQuery 用于查询 过滤:Name
type FilterQuery struct {
Name string
}
// 分页:Limit和Page Limit是单页的数据条数,Page是第几页
type PaginateQuery struct {
Page int
Limit int
}
// 实现自定义的排序方法,需要重写Len,Swap,Less方法
// Len用于获取数组的长度
func (d *dataSelector) Len() int {
return len(d.GenericDataList)
}
// Swap用于数据比较大小后的位置变更
func (d *dataSelector) Swap(i, j int) {
d.GenericDataList[i], d.GenericDataList[j] = d.GenericDataList[j], d.GenericDataList[i]
}
// Less用于比较大小
func (d *dataSelector) Less(i, j int) bool {
return d.GenericDataList[i].GetCreation().Before(d.GenericDataList[j].GetCreation())
}
// 重写以上三个方法,用sort.Sort 方法触发排序
func (d *dataSelector) Sort() *dataSelector {
sort.Sort(d)
return d
}
// Filter方法用于过滤,比较数据Name属性,若包含则返回
func (d *dataSelector) Filter() *dataSelector {
if d.DataSelect.Filter.Name == "" {
return d
}
filtered := []DataCell{}
for _, value := range d.GenericDataList {
// 定义是否匹配的标签变量,默认是匹配的
matches := true
objName := value.GetName()
if !strings.Contains(objName, d.DataSelect.Filter.Name) {
matches = false
continue
}
if matches {
filtered = append(filtered, value)
}
}
d.GenericDataList = filtered
return d
}
// Paginate 分页,根据Limit和Page的传参,取一定范围内的数据返回
func (d *dataSelector) Paginate() *dataSelector {
limit := d.DataSelect.Paginate.Limit
page := d.DataSelect.Paginate.Page
//验证参数合法,若参数不合法,则返回所有数据
if limit <= 0 || page <= 0 {
return d
}
//举例:25个元素的数组,limit是10,page是3,startIndex是20,endIndex是30(实际上endIndex是25)
startIndex := limit * (page - 1)
endIndex := limit * page
//处理最后一页,这时候就把endIndex由30改为25了
if len(d.GenericDataList) < endIndex {
endIndex = len(d.GenericDataList)
}
d.GenericDataList = d.GenericDataList[startIndex:endIndex]
return d
}
// 定义podCell, 重写GetCreation和GetName 方法后,可以进行数据转换
// covev1.Pod --> podCell --> DataCell
// appsv1.Deployment --> deployCell --> DataCell
type podCell corev1.Pod
// 重写DataCell接口的两个方法
func (p podCell) GetCreation() time.Time {
return p.CreationTimestamp.Time
}
func (p podCell) GetName() string {
return p.Name
}
// deployCell
type deploymentCell appsv1.Deployment
func (d deploymentCell) GetCreation() time.Time {
return d.CreationTimestamp.Time
}
func (d deploymentCell) GetName() string {
return d.Name
}
2. Deployment功能
service/deployment.go
- 列表
- 获取Deployment详情
- 修改Deployment副本数
- 创建Deployment
- 删除Deployment
- 重启Deployment
- 更新Deployment
- 获取每个namespace的Deployment数量
2.1 from和to方法
func (d *deployment) toCells(std []appsv1.Deployment) []DataCell {
cells := make([]DataCell, len(std))
for i := range std {
cells[i] = deploymentCell(std[i])
}
return cells
}
func (d *deployment) fromCells(cells []DataCell) []appsv1.Deployment {
deployments := make([]appsv1.Deployment, len(cells))
for i := range cells {
deployments[i] = appsv1.Deployment(cells[i].(deploymentCell))
}
return deployments
}
2.2 获取deployment副本数
// 设置deployment副本数
func (d *deployment) ScaleDeployment(deploymentName, namespace string, scaleNum int) (replica int32, err error) {
//获取autoscalingv1.Scale类型的对象,能点出当前的副本数
scale, err := K8s.ClientSet.AppsV1().Deployments(namespace).GetScale(context.TODO(), deploymentName, metav1.GetOptions{})
if err != nil {
logger.Error(errors.New("获取Deployment副本数信息失败, " + err.Error()))
return 0, errors.New("获取Deployment副本数信息失败, " + err.Error())
}
//修改副本数
scale.Spec.Replicas = int32(scaleNum)
//更新副本数,传入scale对象
newScale, err := K8s.ClientSet.AppsV1().Deployments(namespace).UpdateScale(context.TODO(), deploymentName, scale, metav1.UpdateOptions{})
if err != nil {
logger.Error(errors.New("更新Deployment副本数信息失败, " + err.Error()))
return 0, errors.New("更新Deployment副本数信息失败, " + err.Error())
}
return newScale.Spec.Replicas, nil
}
2.3 创建deployment
// 创建deployment,接收DeployCreate对象
func (d *deployment) CreateDeployment(data *DeployCreate) (err error) {
//将data中的属性组装成appsv1.Deployment对象,并将入参数据放入
deployment := &appsv1.Deployment{
//ObjectMeta中定义资源名、命名空间以及标签
ObjectMeta: metav1.ObjectMeta{
Name: data.Name,
Namespace: data.Namespace,
Labels: data.Label,
},
//Spec中定义副本数、选择器、以及pod属性
Spec: appsv1.DeploymentSpec{
Replicas: &data.Replicas,
Selector: &metav1.LabelSelector{
MatchLabels: data.Label,
},
Template: corev1.PodTemplateSpec{
//定义pod名和标签
ObjectMeta: metav1.ObjectMeta{
Name: data.Name,
Labels: data.Label,
},
//定义容器名、镜像和端口
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: data.Name,
Image: data.Image,
Ports: []corev1.ContainerPort{
{
Name: "http",
Protocol: corev1.ProtocolTCP,
ContainerPort: data.ContainerPort,
},
},
},
},
},
},
},
//Status定义资源的运行状态,这里由于是新建,传入空的appsv1.DeploymentStatus{}对象即可
Status: appsv1.DeploymentStatus{},
}
//判断是否打开健康检查功能,若打开,则定义ReadinessProbe和LivenessProbe
if data.HealthCheck {
//设置第一个容器的ReadinessProbe,因为我们pod中只有一个容器,所以直接使用index 0即可
//若pod中有多个容器,则这里需要使用for循环去定义了
deployment.Spec.Template.Spec.Containers[0].ReadinessProbe = &corev1.Probe{
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Path: data.HealthPath,
//intstr.IntOrString的作用是端口可以定义为整型,也可以定义为字符串
//Type=0则表示表示该结构体实例内的数据为整型,转json时只使用IntVal的数据
//Type=1则表示表示该结构体实例内的数据为字符串,转json时只使用StrVal的数据
Port: intstr.IntOrString{
Type: 0,
IntVal: data.ContainerPort,
},
},
},
//初始化等待时间
InitialDelaySeconds: 5,
//超时时间
TimeoutSeconds: 5,
//执行间隔
PeriodSeconds: 5,
}
deployment.Spec.Template.Spec.Containers[0].LivenessProbe = &corev1.Probe{
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Path: data.HealthPath,
Port: intstr.IntOrString{
Type: 0,
IntVal: data.ContainerPort,
},
},
},
InitialDelaySeconds: 15,
TimeoutSeconds: 5,
PeriodSeconds: 5,
}
//定义容器的limit和request资源
deployment.Spec.Template.Spec.Containers[0].Resources.Limits = map[corev1.ResourceName]resource.Quantity{
corev1.ResourceCPU: resource.MustParse(data.Cpu),
corev1.ResourceMemory: resource.MustParse(data.Memory),
}
deployment.Spec.Template.Spec.Containers[0].Resources.Requests = map[corev1.ResourceName]resource.Quantity{
corev1.ResourceCPU: resource.MustParse(data.Cpu),
corev1.ResourceMemory: resource.MustParse(data.Memory),
}
}
//调用sdk创建deployment
_, err = K8s.ClientSet.AppsV1().Deployments(data.Namespace).Create(context.TODO(), deployment, metav1.CreateOptions{})
if err != nil {
logger.Error(errors.New("创建Deployment失败, " + err.Error()))
return errors.New("创建Deployment失败, " + err.Error())
}
return nil
}
2.4 删除Deployment
// 删除deployment
func (d *deployment) DeleteDeployment(deploymentName, namespace string) (err error) {
err = K8s.ClientSet.AppsV1().Deployments(namespace).Delete(context.TODO(), deploymentName, metav1.DeleteOptions{})
if err != nil {
logger.Error(errors.New("删除Deployment失败, " + err.Error()))
return errors.New("删除Deployment失败, " + err.Error())
}
return nil
}
2.5 重启deployment
// 重启deployment
func (d *deployment) RestartDeployment(deploymentName, namespace string) (err error) {
//此功能等同于一下kubectl命令
//kubectl deployment ${service} -p \
//'{"spec":{"template":{"spec":{"containers":[{"name":"'"${service}"'","env":[{"name":"RESTART_","value":"'$(date +%s)'"}]}]}}}}'
//使用patchData Map组装数据
patchData := map[string]interface{}{
"spec": map[string]interface{}{
"template": map[string]interface{}{
"spec": map[string]interface{}{
"containers": []map[string]interface{}{
{"name": deploymentName,
"env": []map[string]string{{
"name": "RESTART_",
"value": strconv.FormatInt(time.Now().Unix(), 10),
}},
},
},
},
},
},
}
//序列化为字节,因为patch方法只接收字节类型参数
patchByte, err := json.Marshal(patchData)
if err != nil {
logger.Error(errors.New("json序列化失败, " + err.Error()))
return errors.New("json序列化失败, " + err.Error())
}
//调用patch方法更新deployment
_, err = K8s.ClientSet.AppsV1().Deployments(namespace).Patch(context.TODO(), deploymentName, "application/strategic-merge-patch+json", patchByte, metav1.PatchOptions{})
if err != nil {
logger.Error(errors.New("重启Deployment失败, " + err.Error()))
return errors.New("重启Deployment失败, " + err.Error())
}
return nil
}
2.6 更新deployment
// 更新deployment
func (d *deployment) UpdateDeployment(namespace, content string) (err error) {
var deploy = &appsv1.Deployment{}
err = json.Unmarshal([]byte(content), deploy)
if err != nil {
logger.Error(errors.New("反序列化失败, " + err.Error()))
return errors.New("反序列化失败, " + err.Error())
}
_, err = K8s.ClientSet.AppsV1().Deployments(namespace).Update(context.TODO(), deploy, metav1.UpdateOptions{})
if err != nil {
logger.Error(errors.New("更新Deployment失败, " + err.Error()))
return errors.New("更新Deployment失败, " + err.Error())
}
return nil
}
2.7 获取所有Namespace中Deployment数量
// 获取每个namespace的deployment数量
func (d *deployment) GetDeployNumPerNp() (deploysNps []*DeploysNp, err error) {
namespaceList, err := K8s.ClientSet.CoreV1().Namespaces().List(context.TODO(), metav1.ListOptions{})
if err != nil {
return nil, err
}
for _, namespace := range namespaceList.Items {
deploymentList, err := K8s.ClientSet.AppsV1().Deployments(namespace.Name).List(context.TODO(), metav1.ListOptions{})
if err != nil {
return nil, err
}
deploysNp := &DeploysNp{
Namespace: namespace.Name,
DeployNum: len(deploymentList.Items),
}
deploysNps = append(deploysNps, deploysNp)
}
return deploysNps, nil
}
2.8 整个deployment
service/deployment.go
package service
import (
"context"
"encoding/json"
"errors"
"strconv"
"time"
"github.com/wonderivan/logger"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
)
var Deployment deployment
type deployment struct{}
// 定义列表的返回内容,Items是deployment元素列表,Total为deployment元素数量
type DeploymentsResp struct {
Items []appsv1.Deployment `json:"items"`
Total int `json:"total"`
}
// 定义DeployCreate结构体,用于创建deployment需要的参数属性的定义
type DeployCreate struct {
Name string `json:"name"`
Namespace string `json:"namespace"`
Replicas int32 `json:"replicas"`
Image string `json:"image"`
Label map[string]string `json:"label"`
Cpu string `json:"cpu"`
Memory string `json:"memory"`
ContainerPort int32 `json:"container_port"`
HealthCheck bool `json:"health_check"`
HealthPath string `json:"health_path"`
}
// 定义DeploysNp类型,用于返回namespace中deployment的数量
type DeploysNp struct {
Namespace string `json:"namespace"`
DeployNum int `json:"deployment_num"`
}
// 获取deployment列表,支持过滤、排序、分页
func (d *deployment) GetDeployments(filterName, namespace string, limit, page int) (deploymentsResp *DeploymentsResp, err error) {
//获取deploymentList类型的deployment列表
deploymentList, err := K8s.ClientSet.AppsV1().Deployments(namespace).List(context.TODO(), metav1.ListOptions{})
if err != nil {
logger.Error(errors.New("获取Deployment列表失败, " + err.Error()))
return nil, errors.New("获取Deployment列表失败, " + err.Error())
}
//将deploymentList中的deployment列表(Items),放进dataselector对象中,进行排序
selectableData := &dataSelector{
GenericDataList: d.toCells(deploymentList.Items),
DataSelect: &DataSelectQuery{
Filter: &FilterQuery{Name: filterName},
Paginate: &PaginateQuery{
Limit: limit,
Page: page,
},
},
}
filtered := selectableData.Filter()
total := len(filtered.GenericDataList)
data := filtered.Sort().Paginate()
//将[]DataCell类型的deployment列表转为appsv1.deployment列表
deployments := d.fromCells(data.GenericDataList)
return &DeploymentsResp{
Items: deployments,
Total: total,
}, nil
}
// 获取deployment详情
func (d *deployment) GetDeploymentDetail(deploymentName, namespace string) (deployment *appsv1.Deployment, err error) {
deployment, err = K8s.ClientSet.AppsV1().Deployments(namespace).Get(context.TODO(), deploymentName, metav1.GetOptions{})
if err != nil {
logger.Error(errors.New("获取Deployment详情失败, " + err.Error()))
return nil, errors.New("获取Deployment详情失败, " + err.Error())
}
return deployment, nil
}
// 设置deployment副本数
func (d *deployment) ScaleDeployment(deploymentName, namespace string, scaleNum int) (replica int32, err error) {
//获取autoscalingv1.Scale类型的对象,能点出当前的副本数
scale, err := K8s.ClientSet.AppsV1().Deployments(namespace).GetScale(context.TODO(), deploymentName, metav1.GetOptions{})
if err != nil {
logger.Error(errors.New("获取Deployment副本数信息失败, " + err.Error()))
return 0, errors.New("获取Deployment副本数信息失败, " + err.Error())
}
//修改副本数
scale.Spec.Replicas = int32(scaleNum)
//更新副本数,传入scale对象
newScale, err := K8s.ClientSet.AppsV1().Deployments(namespace).UpdateScale(context.TODO(), deploymentName, scale, metav1.UpdateOptions{})
if err != nil {
logger.Error(errors.New("更新Deployment副本数信息失败, " + err.Error()))
return 0, errors.New("更新Deployment副本数信息失败, " + err.Error())
}
return newScale.Spec.Replicas, nil
}
// 创建deployment,接收DeployCreate对象
func (d *deployment) CreateDeployment(data *DeployCreate) (err error) {
//将data中的属性组装成appsv1.Deployment对象,并将入参数据放入
deployment := &appsv1.Deployment{
//ObjectMeta中定义资源名、命名空间以及标签
ObjectMeta: metav1.ObjectMeta{
Name: data.Name,
Namespace: data.Namespace,
Labels: data.Label,
},
//Spec中定义副本数、选择器、以及pod属性
Spec: appsv1.DeploymentSpec{
Replicas: &data.Replicas,
Selector: &metav1.LabelSelector{
MatchLabels: data.Label,
},
Template: corev1.PodTemplateSpec{
//定义pod名和标签
ObjectMeta: metav1.ObjectMeta{
Name: data.Name,
Labels: data.Label,
},
//定义容器名、镜像和端口
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: data.Name,
Image: data.Image,
Ports: []corev1.ContainerPort{
{
Name: "http",
Protocol: corev1.ProtocolTCP,
ContainerPort: data.ContainerPort,
},
},
},
},
},
},
},
//Status定义资源的运行状态,这里由于是新建,传入空的appsv1.DeploymentStatus{}对象即可
Status: appsv1.DeploymentStatus{},
}
//判断是否打开健康检查功能,若打开,则定义ReadinessProbe和LivenessProbe
if data.HealthCheck {
//设置第一个容器的ReadinessProbe,因为我们pod中只有一个容器,所以直接使用index 0即可
//若pod中有多个容器,则这里需要使用for循环去定义了
deployment.Spec.Template.Spec.Containers[0].ReadinessProbe = &corev1.Probe{
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Path: data.HealthPath,
//intstr.IntOrString的作用是端口可以定义为整型,也可以定义为字符串
//Type=0则表示表示该结构体实例内的数据为整型,转json时只使用IntVal的数据
//Type=1则表示表示该结构体实例内的数据为字符串,转json时只使用StrVal的数据
Port: intstr.IntOrString{
Type: 0,
IntVal: data.ContainerPort,
},
},
},
//初始化等待时间
InitialDelaySeconds: 5,
//超时时间
TimeoutSeconds: 5,
//执行间隔
PeriodSeconds: 5,
}
deployment.Spec.Template.Spec.Containers[0].LivenessProbe = &corev1.Probe{
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Path: data.HealthPath,
Port: intstr.IntOrString{
Type: 0,
IntVal: data.ContainerPort,
},
},
},
InitialDelaySeconds: 15,
TimeoutSeconds: 5,
PeriodSeconds: 5,
}
//定义容器的limit和request资源
deployment.Spec.Template.Spec.Containers[0].Resources.Limits = map[corev1.ResourceName]resource.Quantity{
corev1.ResourceCPU: resource.MustParse(data.Cpu),
corev1.ResourceMemory: resource.MustParse(data.Memory),
}
deployment.Spec.Template.Spec.Containers[0].Resources.Requests = map[corev1.ResourceName]resource.Quantity{
corev1.ResourceCPU: resource.MustParse(data.Cpu),
corev1.ResourceMemory: resource.MustParse(data.Memory),
}
}
//调用sdk创建deployment
_, err = K8s.ClientSet.AppsV1().Deployments(data.Namespace).Create(context.TODO(), deployment, metav1.CreateOptions{})
if err != nil {
logger.Error(errors.New("创建Deployment失败, " + err.Error()))
return errors.New("创建Deployment失败, " + err.Error())
}
return nil
}
// 删除deployment
func (d *deployment) DeleteDeployment(deploymentName, namespace string) (err error) {
err = K8s.ClientSet.AppsV1().Deployments(namespace).Delete(context.TODO(), deploymentName, metav1.DeleteOptions{})
if err != nil {
logger.Error(errors.New("删除Deployment失败, " + err.Error()))
return errors.New("删除Deployment失败, " + err.Error())
}
return nil
}
// 重启deployment
func (d *deployment) RestartDeployment(deploymentName, namespace string) (err error) {
//此功能等同于一下kubectl命令
//kubectl deployment ${service} -p \
//'{"spec":{"template":{"spec":{"containers":[{"name":"'"${service}"'","env":[{"name":"RESTART_","value":"'$(date +%s)'"}]}]}}}}'
//使用patchData Map组装数据
patchData := map[string]interface{}{
"spec": map[string]interface{}{
"template": map[string]interface{}{
"spec": map[string]interface{}{
"containers": []map[string]interface{}{
{"name": deploymentName,
"env": []map[string]string{{
"name": "RESTART_",
"value": strconv.FormatInt(time.Now().Unix(), 10),
}},
},
},
},
},
},
}
//序列化为字节,因为patch方法只接收字节类型参数
patchByte, err := json.Marshal(patchData)
if err != nil {
logger.Error(errors.New("json序列化失败, " + err.Error()))
return errors.New("json序列化失败, " + err.Error())
}
//调用patch方法更新deployment
_, err = K8s.ClientSet.AppsV1().Deployments(namespace).Patch(context.TODO(), deploymentName, "application/strategic-merge-patch+json", patchByte, metav1.PatchOptions{})
if err != nil {
logger.Error(errors.New("重启Deployment失败, " + err.Error()))
return errors.New("重启Deployment失败, " + err.Error())
}
return nil
}
// 更新deployment
func (d *deployment) UpdateDeployment(namespace, content string) (err error) {
var deploy = &appsv1.Deployment{}
err = json.Unmarshal([]byte(content), deploy)
if err != nil {
logger.Error(errors.New("反序列化失败, " + err.Error()))
return errors.New("反序列化失败, " + err.Error())
}
_, err = K8s.ClientSet.AppsV1().Deployments(namespace).Update(context.TODO(), deploy, metav1.UpdateOptions{})
if err != nil {
logger.Error(errors.New("更新Deployment失败, " + err.Error()))
return errors.New("更新Deployment失败, " + err.Error())
}
return nil
}
// 获取每个namespace的deployment数量
func (d *deployment) GetDeployNumPerNp() (deploysNps []*DeploysNp, err error) {
namespaceList, err := K8s.ClientSet.CoreV1().Namespaces().List(context.TODO(), metav1.ListOptions{})
if err != nil {
return nil, err
}
for _, namespace := range namespaceList.Items {
deploymentList, err := K8s.ClientSet.AppsV1().Deployments(namespace.Name).List(context.TODO(), metav1.ListOptions{})
if err != nil {
return nil, err
}
deploysNp := &DeploysNp{
Namespace: namespace.Name,
DeployNum: len(deploymentList.Items),
}
deploysNps = append(deploysNps, deploysNp)
}
return deploysNps, nil
}
func (d *deployment) toCells(std []appsv1.Deployment) []DataCell {
cells := make([]DataCell, len(std))
for i := range std {
cells[i] = deploymentCell(std[i])
}
return cells
}
func (d *deployment) fromCells(cells []DataCell) []appsv1.Deployment {
deployments := make([]appsv1.Deployment, len(cells))
for i := range cells {
deployments[i] = appsv1.Deployment(cells[i].(deploymentCell))
}
return deployments
}
3. 获取Deployment列表
controller/deployment.go
package controller
import (
"fmt"
"k8s-plantform/service"
"net/http"
"github.com/gin-gonic/gin"
"github.com/wonderivan/logger"
)
var Deployment deployment
type deployment struct{}
// 获取deployment列表,支持过滤、排序、分页
func (d *deployment) GetDeployments(ctx *gin.Context) {
params := new(struct {
FilterName string `form:"filter_name"`
Namespace string `form:"namespace"`
Page int `form:"page"`
Limit int `form:"limit"`
})
if err := ctx.Bind(params); err != nil {
logger.Error("Bind请求参数失败, " + err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
data, err := service.Deployment.GetDeployments(params.FilterName, params.Namespace, params.Limit, params.Page)
if err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "获取Deployment列表成功",
"data": data,
})
}
// 获取deployment详情
func (d *deployment) GetDeploymentDetail(ctx *gin.Context) {
params := new(struct {
DeploymentName string `form:"deployment_name"`
Namespace string `form:"namespace"`
})
if err := ctx.Bind(params); err != nil {
logger.Error("Bind请求参数失败, " + err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
data, err := service.Deployment.GetDeploymentDetail(params.DeploymentName, params.Namespace)
if err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "获取Deployment详情成功",
"data": data,
})
}
// 创建deployment
func (d *deployment) CreateDeployment(ctx *gin.Context) {
var (
deployCreate = new(service.DeployCreate)
err error
)
if err = ctx.ShouldBindJSON(deployCreate); err != nil {
logger.Error("Bind请求参数失败, " + err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
if err = service.Deployment.CreateDeployment(deployCreate); err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "创建Deployment成功",
"data": nil,
})
}
// 设置deployment副本数
func (d *deployment) ScaleDeployment(ctx *gin.Context) {
params := new(struct {
DeploymentName string `json:"deployment_name"`
Namespace string `json:"namespace"`
ScaleNum int `json:"scale_num"`
})
//PUT请求,绑定参数方法改为ctx.ShouldBindJSON
if err := ctx.ShouldBindJSON(params); err != nil {
logger.Error("Bind请求参数失败, " + err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
data, err := service.Deployment.ScaleDeployment(params.DeploymentName, params.Namespace, params.ScaleNum)
if err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "设置Deployment副本数成功",
"data": fmt.Sprintf("最新副本数: %d", data),
})
}
// 删除deployment
func (d *deployment) DeleteDeployment(ctx *gin.Context) {
params := new(struct {
DeploymentName string `json:"deployment_name"`
Namespace string `json:"namespace"`
})
//DELETE请求,绑定参数方法改为ctx.ShouldBindJSON
if err := ctx.ShouldBindJSON(params); err != nil {
logger.Error("Bind请求参数失败, " + err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
err := service.Deployment.DeleteDeployment(params.DeploymentName, params.Namespace)
if err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "删除Deployment成功",
"data": nil,
})
}
// 重启deployment
func (d *deployment) RestartDeployment(ctx *gin.Context) {
params := new(struct {
DeploymentName string `json:"deployment_name"`
Namespace string `json:"namespace"`
})
//PUT请求,绑定参数方法改为ctx.ShouldBindJSON
if err := ctx.ShouldBindJSON(params); err != nil {
logger.Error("Bind请求参数失败, " + err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
err := service.Deployment.RestartDeployment(params.DeploymentName, params.Namespace)
if err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "重启Deployment成功",
"data": nil,
})
}
// 更新deployment
func (d *deployment) UpdateDeployment(ctx *gin.Context) {
params := new(struct {
Namespace string `json:"namespace"`
Content string `json:"content"`
})
//PUT请求,绑定参数方法改为ctx.ShouldBindJSON
if err := ctx.ShouldBindJSON(params); err != nil {
logger.Error("Bind请求参数失败, " + err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
err := service.Deployment.UpdateDeployment(params.Namespace, params.Content)
if err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "更新Deployment成功",
"data": nil,
})
}
// 获取每个namespace的pod数量
func (d *deployment) GetDeployNumPerNp(ctx *gin.Context) {
data, err := service.Deployment.GetDeployNumPerNp()
if err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "获取每个namespace的deployment数量成功",
"data": data,
})
}
4. 定义路由
controller/router.go
package controller
import (
"github.com/gin-gonic/gin"
)
// 初始化router类型的对象,首字母大写,用于跨包调用
var Router router
// 声明一个router的结构体
type router struct{}
func (r *router) InitApiRouter(router *gin.Engine) {
router.
// Pods
GET("/api/k8s/pods", Pod.GetPods).
GET("/api/k8s/pods/detail", Pod.GetPodDetail).
POST("/api/k8s/pods", Pod.DeletePod).
DELETE("/api/k8s/pod/del", Pod.DeletePod).
PUT("/api/k8s/pod/update", Pod.UpdatePod).
GET("/api/k8s/pod/container", Pod.GetPodContainer).
GET("/api/k8s/pod/log", Pod.GetPodLog).
GET("/api/k8s/pod/numnp", Pod.GetPodNumPerNp).
//deployment操作
GET("/api/k8s/deployments", Deployment.GetDeployments).
GET("/api/k8s/deployment/detail", Deployment.GetDeploymentDetail).
PUT("/api/k8s/deployment/scale", Deployment.ScaleDeployment).
DELETE("/api/k8s/deployment/del", Deployment.DeleteDeployment).
PUT("/api/k8s/deployment/restart", Deployment.RestartDeployment).
PUT("/api/k8s/deployment/update", Deployment.UpdateDeployment).
GET("/api/k8s/deployment/numnp", Deployment.GetDeployNumPerNp).
POST("/api/k8s/deployment/create", Deployment.CreateDeployment)
}
5. 测试Deployment方法
5.1 获取Deployment清单
/api/k8s/deployments
5.2 获取Deployment清单详情
/api/k8s/deployment/detail
5.3 修改Deployment副本数
/api/k8s/deployment/scale
root@master-01:~/exam-CKA# kubectl get deployments.apps -A
NAMESPACE NAME READY UP-TO-DATE AVAILABLE AGE
default nginx-deployment 3/3 3 3 2d20h
kube-system coredns 0/2 2 0 2d23h
wework wework-tomcat-app1-deployment 1/1 1 1 2d21h
wework wework-tomcat-app2-deployment 1/1 1 1 2d21h
root@master-01:~/exam-CKA# kubectl get deployments.apps
NAME READY UP-TO-DATE AVAILABLE AGE
nginx-deployment 4/4 4 4 2d20h
root@master-01:~/exam-CKA# kubectl get pods
NAME READY STATUS RESTARTS AGE
nginx-deployment-66b6c48dd5-24grz 1/1 Running 0 2d20h
nginx-deployment-66b6c48dd5-cz6ql 1/1 Running 0 31s
nginx-deployment-66b6c48dd5-gttz6 1/1 Running 0 2d20h
nginx-deployment-66b6c48dd5-gxksp 1/1 Running 0 2d20h
test-pod1 1/1 Running 1 2d23h
test-pod2 1/1 Running 1 2d23h
test-pod3 1/1 Running 1 2d23h
test-pod4 1/1 Running 1 2d23h
5.4 创建Deployment
/api/k8s/deployment/create
root@master-01:~/exam-CKA# kubectl get deployments.apps
NAME READY UP-TO-DATE AVAILABLE AGE
nginx-deployment 4/4 4 4 2d20h
这个放到前端一起测
5.5 删除Deployment
/api/k8s/deployment/del
root@master-01:~/exam-CKA/yaml# kubectl get deployments.apps -n k8s
NAME READY UP-TO-DATE AVAILABLE AGE
front-end 1/1 1 1 11s
front-end这个deployment就被删除了
# kubectl get deployments.apps -n k8s
No resources found in k8s namespace.
5.6 重启Deployment
/api/k8s/deployment/restart
root@master-01:~/exam-CKA/yaml# kubectl get deployments.apps,pods
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/nginx 3/3 3 3 115s
NAME READY STATUS RESTARTS AGE
pod/nginx-64dd8946f7-7c6nj 1/1 Running 0 63s
pod/nginx-64dd8946f7-8wp7f 1/1 Running 0 67s
pod/nginx-64dd8946f7-9f9bn 1/1 Running 0 65s
pod/test-pod1 1/1 Running 1 3d
pod/test-pod2 1/1 Running 1 3d
pod/test-pod3 1/1 Running 1 3d
pod/test-pod4 1/1 Running 1 3d
这里可以看到pod已经被重启过了
root@master-01:~/exam-CKA/yaml# kubectl get deployments.apps,pods
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/nginx 3/3 3 3 3m15s
NAME READY STATUS RESTARTS AGE
pod/nginx-64f8cb6df4-5mtjg 1/1 Running 0 17s
pod/nginx-64f8cb6df4-jkgtq 1/1 Running 0 22s
pod/nginx-64f8cb6df4-qj9dj 1/1 Running 0 19s
pod/test-pod1 1/1 Running 1 3d
pod/test-pod2 1/1 Running 1 3d
pod/test-pod3 1/1 Running 1 3d
pod/test-pod4 1/1 Running 1 3d
5.7 更新Deployment
/api/k8s/deployment/update
这个放到前端一起测.其实之前的restart已经实现了部分功能
5.8 获取每个namespace的Deployment数量
/api/k8s/deployment/numnp