利用io.fabric8 java客户端操作k8s
1、导入jar包<!-- https://mvnrepository.com/artifact/io.fabric8/kubernetes-client --><dependency><groupId>io.fabric8</groupId><artif...
·
1、导入jar包
<!-- https://mvnrepository.com/artifact/io.fabric8/kubernetes-client -->
<dependency>
<groupId>io.fabric8</groupId>
<artifactId>kubernetes-client</artifactId>
<version>4.2.1</version>
</dependency>
2、创建k8s客户端
由于是多集群的k8s客户端,利用集群id做key,缓存客户端
package com.cn21.mec.meao.common.cache;
import com.cn21.mec.core.entity.api.model.Cluster;
import com.cn21.mec.core.exception.ResourceNotFoundException;
import com.cn21.mec.core.utils.BaseCache;
import com.cn21.mec.meao.dao.ClusterDao;
import io.fabric8.kubernetes.client.Config;
import io.fabric8.kubernetes.client.ConfigBuilder;
import io.fabric8.kubernetes.client.DefaultKubernetesClient;
import io.fabric8.kubernetes.client.KubernetesClient;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static com.cn21.mec.core.constants.Constants.MEC_CLUSTER;
@Component
public class KubeClientCache extends BaseCache<Cluster, KubernetesClient> {
private Map<Integer, KubernetesClient> kubernetesClientMap;
@Resource
private ClusterDao clusterDao;
public KubeClientCache() {
kubernetesClientMap = new HashMap<>();
}
@Override
public void refresh() {
List<Cluster> clusters = loadFromDB();
for (Cluster cluster: clusters) {
Config config = new ConfigBuilder()
.withMasterUrl(cluster.getCcpAccessAddress())
.withCaCertData(cluster.getAccessCaData())
.withClientCertData(cluster.getAccessCrtData())
.withClientKeyData(cluster.getAccessKeyData())
.build();
this.kubernetesClientMap.put(cluster.getClusterId(), new DefaultKubernetesClient(config));
}
}
@Override
protected List<Cluster> loadFromDB() {
return clusterDao.getAll();
}
@Override
public KubernetesClient get(Object key) {
KubernetesClient kubernetesClient = kubernetesClientMap.get((Integer) key);
if (kubernetesClient == null) {
throw new ResourceNotFoundException(MEC_CLUSTER, key);
}
return kubernetesClient;
}
@Override
public void set(Object key, KubernetesClient kubernetesClient) {
this.kubernetesClientMap.put((Integer) key, kubernetesClient);
}
@Override
public void delete(Object key) {
this.kubernetesClientMap.remove((Integer) key);
}
@Override
public void setWithExpireTime(Object key, KubernetesClient kubernetesClient, long seconds) {
}
}
package com.cn21.mec.core.utils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import java.util.List;
/**
* Base Redis Cache
* @author zoup
* @version 2018-09-27
*/
public abstract class BaseCache<T, V> implements CommandLineRunner {
@Autowired
private CacheCenter cacheCenter;
/**
* 初始化
* @author zoup
*/
public void init() {
cacheCenter.newCache(this);
refresh();
}
/**
* 刷新
* @author zoup
*/
public abstract void refresh();
/**
* 加载表数据
* @author zoup
* @return List<T> 数据库实体
*/
protected abstract List<T> loadFromDB();
/**
* 读取缓存
* @author zoup
* @param key 缓存key
* @return V 缓存实体
*/
public abstract V get(Object key);
/**
* 写入缓存
* @author zoup
* @param key 缓存key
* @param v 缓存实体
*/
public abstract void set(Object key, V v);
/**
* 删除缓存
* @param key 缓存key
*/
public abstract void delete(Object key);
/**
* 写入缓存并设置过期时间,默认为String类型,时间单位为秒
* @author zoup
* @param key 缓存key
* @param v 缓存实体
*/
public abstract void setWithExpireTime(Object key, V v, long seconds);
@Override
public void run(String... args) throws Exception {
init();
}
}
3、对deployment进行操作
/* 1、设置deployment的唯一LabelSelector
* 2、设置pods的selector:orgId/serviceSetId/departmentId/deploymentName
* 3、创建,由缓存获取客户端,之后代码类似
*/
//设置deployment的唯一LabelSelector
pDeployment.getDeployment().getSpec().getSelector().getMatchLabels().put(Constants.ORG_ID,pDeployment.getDpOrgId().toString());
pDeployment.getDeployment().getSpec().getSelector().getMatchLabels().put(Constants.DEPARTMENT_ID,pDeployment.getDpDepartmentId().toString());
pDeployment.getDeployment().getSpec().getSelector().getMatchLabels().put(Constants.SERVICE_SET_ID,pDeployment.getServiceSetId().toString());
pDeployment.getDeployment().getSpec().getSelector().getMatchLabels().put(Constants.DEPLOYMENT_NAME,pDeployment.getName());
// 设置pods的selector:orgId/serviceSetId/departmentId/deploymentName
pDeployment.getDeployment().getSpec().getTemplate().getMetadata().getLabels().put(ORG_ID,pDeployment.getDpOrgId().toString());
pDeployment.getDeployment().getSpec().getTemplate().getMetadata().getLabels().put(Constants.DEPARTMENT_ID,pDeployment.getDpDepartmentId().toString());
pDeployment.getDeployment().getSpec().getTemplate().getMetadata().getLabels().put(Constants.SERVICE_SET_ID,pDeployment.getServiceSetId().toString());
pDeployment.getDeployment().getSpec().getTemplate().getMetadata().getLabels().put(Constants.DEPLOYMENT_NAME,pDeployment.getName());
// 创建
kubeClientCache.get(clusterId).apps().deployments().inNamespace(pDeployment.getNamespace()).create(deployment);
// 修改deployment
kubeClientCache.get(clusterId).apps().deployments().inNamespace(pDeployment.getNamespace()).withName(pDeployment.getName()).replace(deployment);
//获取详情
kubeClientCache.get(clusterId).apps().deployments().inNamespace(pDeployment.getNamespace()).withName(pDeploy.getName()).get();
// k8s删除 deployment rs pods,其中pods的labels为deployment中LabelSelector设置
//删除deployment,需要删除rs以及对应Labels的pods
Map<String, String> map = new HashMap<>();
map.put(ORG_ID, pDeploy.getDpOrgId().toString());
map.put(DEPARTMENT_ID, pDeploy.getDpDepartmentId().toString());
map.put(SERVICE_SET_ID, pDeploy.getServiceSetId().toString());
map.put(DEPLOYMENT_NAME, pDeploy.getName());
//删除deployment
kubeClientCache.get(clusterId).apps().deployments().inNamespace(pDeploy.getNamespace()).withName(pDeploy.getName()).delete();
//删除rs kubeClientCache.get(clusterId).apps().replicaSets().inNamespace(pDeploy.getNamespace()).withLabels(map).delete();
//删除pods
kubeClientCache.get(clusterId).pods().inNamespace(pDeploy.getNamespace()).withLabels(map).delete();
4、对service进行操作
//创建service
// 设置pods的selector :ServiceSetId作为service选择pods的唯一选择器 pService.getService().getSpec().getSelector().put(Constants.SERVICE_SET_ID,pService.getServiceSetId().toString());
pService.getService().getSpec().getSelector().put(Constants.ORG_ID,pService.getDpOrgId().toString());
pService.getService().getSpec().getSelector().put(Constants.DEPARTMENT_ID,pService.getDpDepartmentId().toString());
// 设置service的labels:orgId/departmentId/serviceSetId
pService.getService().getMetadata().getLabels().put(Constants.ORG_ID,pService.getDpOrgId().toString());
pService.getService().getMetadata().getLabels().put(Constants.DEPARTMENT_ID,pService.getDpDepartmentId().toString());
pService.getService().getMetadata().getLabels().put(Constants.SERVICE_SET_ID,pService.getServiceSetId().toString());
// 创建service
kubeClientCache.get(clusterId).services().inNamespace(pService.getNamespace()).create(service);
// 修改k8s service
kubeClientCache.get(clusterId).services().inNamespace(pService.getNamespace()).withName(redisPService.getName()).replace(service);
//获取service详情
kubeClientCache.get(clusterId).services().inNamespace(pService.getNamespace()).withName(redisPService.getName()).get();
//删除service
kubeClientCache.get(clusterId).services().inNamespace(redisPService.getNamespace()).withName(redisPService.getName()).delete();
5、对命名空间进行操作
// 创建命名空间
kubeClientCache.get(kubeBaseBean.getClusterId()).namespaces().create(namespace);
// 删除命名空间
kubeClientCache.get(kubeBaseBean.getClusterId()).namespaces().withName(kubeBaseBean.getNamespace()).delete();
6、configMap进行操作
// 创建 configMap 其他操作与上类似
kubeClientCache.get(pConfigMap.getClusterId())
.configMaps()
.inNamespace(pConfigMap.getNamespace())
.create(pConfigMap.getConfigMap());
更多推荐
已为社区贡献3条内容
所有评论(0)