io.fabric8.kubernetes对pv和pvc的增删查改
1、新建maven项目k8stest，pom.xml如下：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.k8s.test</groupId> <artifactId>k8stest</artifactId> <version>0.0.1-SNAPSHOT</version> <name>K8stest</name> <dependencies> <dependency> <groupId>io.fabric8</groupId> <artifactId>kubernetes-client</artifactId> <version>1.4.14</version> </dependency> <dependency> <groupId>com.google.code.gson</groupId> <artifactId>gson</artifactId> <version>2.4</version> </dependency> </dependencies> </project>
2、新建测试类pvTest.java
import java.util.ArrayList; import java.util.Arrays; import java.util.HashMap; import java.util.List; import java.util.Map; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.google.gson.Gson; import com.google.gson.GsonBuilder; import com.google.gson.JsonParser; import io.fabric8.kubernetes.api.model.LabelSelector; import io.fabric8.kubernetes.api.model.NFSVolumeSource; import io.fabric8.kubernetes.api.model.ObjectMeta; import io.fabric8.kubernetes.api.model.PersistentVolume; import io.fabric8.kubernetes.api.model.PersistentVolumeClaim; import io.fabric8.kubernetes.api.model.PersistentVolumeClaimList; import io.fabric8.kubernetes.api.model.PersistentVolumeClaimSpec; import io.fabric8.kubernetes.api.model.PersistentVolumeList; import io.fabric8.kubernetes.api.model.PersistentVolumeSpec; import io.fabric8.kubernetes.api.model.Quantity; import io.fabric8.kubernetes.api.model.RBDVolumeSource; import io.fabric8.kubernetes.api.model.ResourceRequirements; import io.fabric8.kubernetes.client.Config; import io.fabric8.kubernetes.client.ConfigBuilder; import io.fabric8.kubernetes.client.DefaultKubernetesClient; import io.fabric8.kubernetes.client.KubernetesClient; public class pvTest { private static final Logger logger = LoggerFactory.getLogger(pvTest.class); public static void main(String[] args){ KubernetesClient kubernetesClient= connectK8s(); //创建pv //testCreatePv_Nfs(kubernetesClient); //testCreatePv_Rbd(kubernetesClient); //删除指定的pv //删除指定的pv //testDeletePv(kubernetesClient, "hzbtestpv"); //获取pv列表 //testPvList(kubernetesClient); //更新pv //testUpdatePv(kubernetesClient,"hzbtestpv"); //创建pvc testCreatePvc(kubernetesClient); //删除指定的pvc // testDeletePvc(kubernetesClient, "hzbtestpvc"); //获取pvc列表 // testPvcList(kubernetesClient); //更新指定的PVC //testUpdatePvc(kubernetesClient,"hzbtestpvc"); //System.out.println(System.nanoTime()); //扩容 //expanseStorage(kubernetesClient,"hzbtestpv","15Gi"); } /** * 获取pv列表 * @param kubernetesClient */ public static void testPvList(KubernetesClient kubernetesClient){ if(kubernetesClient!=null){ PersistentVolumeList pVolumeList=kubernetesClient.persistentVolumes().list(); List<PersistentVolume> pvList=pVolumeList.getItems(); for( PersistentVolume pv:pvList){ System.out.println("显示一个pv信息==============================================="); System.out.println("========="+jsonFormatter(pv)); } } } /** * 创建pv信息，挂载nfs存储 * @param kubernetesClient */ public static void testCreatePv_Nfs(KubernetesClient kubernetesClient){ PersistentVolume pv=new PersistentVolume(); pv.setApiVersion("v1"); pv.setKind("PersistentVolume"); ObjectMeta meta=new ObjectMeta(); meta.setName("hzbtestpv"); Map<String, String> labelsMap=new HashMap<String, String>(); labelsMap.put("app", "hzbtestpv-lb"); meta.setLabels(labelsMap); //设置pv的metadata pv.setMetadata(meta); PersistentVolumeSpec pvs=new PersistentVolumeSpec(); Map<String, Quantity> capacityMap=new HashMap<String, Quantity>(); Quantity quantity=new Quantity(); quantity.setAmount("5Gi"); capacityMap.put("storage", quantity); //设置Spec的capacity pvs.setCapacity(capacityMap); List<String> accessModes=new ArrayList<String>(); accessModes.add("ReadWriteOnce"); //设置Spec的accessModes pvs.setAccessModes(accessModes); //设置Spec的回收pvc的回收策略。 pvs.setPersistentVolumeReclaimPolicy("Recycle"); NFSVolumeSource nfsVolumeSource=new NFSVolumeSource(); nfsVolumeSource.setServer("172.16.101.189"); nfsVolumeSource.setPath("/srv/nfs/hzb/test"); //设置Spec的nfs pvs.setNfs(nfsVolumeSource); //设置pv的Spec pv.setSpec(pvs); try { //将pv信息存储到服务端 kubernetesClient.persistentVolumes().create(pv); System.out.println("创建pv成功"); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } /** * 创建pv信息，挂载Rbd存储 * @param kubernetesClient */ public static void testCreatePv_Rbd(KubernetesClient kubernetesClient){ PersistentVolume pv=new PersistentVolume(); pv.setApiVersion("v1"); pv.setKind("PersistentVolume"); ObjectMeta meta=new ObjectMeta(); meta.setName("mysql-hzb-pv"); //设置pv的metadata pv.setMetadata(meta); PersistentVolumeSpec pvs=new PersistentVolumeSpec(); Map<String, Quantity> capacityMap=new HashMap<String, Quantity>(); Quantity quantity=new Quantity(); quantity.setAmount("2Gi"); capacityMap.put("storage", quantity); //设置Spec的capacity pvs.setCapacity(capacityMap); List<String> accessModes=new ArrayList<String>(); accessModes.add("ReadWriteOnce"); //设置Spec的accessModes pvs.setAccessModes(accessModes); //设置Spec的回收pvc的回收策略。 pvs.setPersistentVolumeReclaimPolicy("Recycle"); RBDVolumeSource rbdVolumeSource=new RBDVolumeSource(); //设置ceph的monitors rbdVolumeSource.setMonitors(Arrays.asList("172.16.60.41:6789", "172.16.60.42:6789", "172.16.60.43:6789")); //设置ceph使用的存储池，ceph中默认是rbd rbdVolumeSource.setPool("rbd"); //设置该pv要用的ceph的image rbdVolumeSource.setImage("hzb-mysql"); //设置连接ceph的用户 rbdVolumeSource.setUser("admin"); //设置admin用户的认证信息 rbdVolumeSource.setKeyring("/etc/ceph/ceph.client.admin.keyring"); //设置要以哪种格式来格式化image rbdVolumeSource.setFsType("xfs"); //设置image的读写权限 rbdVolumeSource.setReadOnly(false); pvs.setRbd(rbdVolumeSource); //设置pv的Spec pv.setSpec(pvs); try { //将pv信息存储到服务端 kubernetesClient.persistentVolumes().create(pv); System.out.println("创建挂载rbd的pv成功"); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } /** * 删除指定的pv信息 * @param kubernetesClient * @param pvName */ public static void testDeletePv(KubernetesClient kubernetesClient,String pvName){ try { kubernetesClient.persistentVolumes().withName(pvName).delete(); System.out.println("成功删除pv========"+pvName); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } /** * 更新指定的pv信息 * @param kubernetesClient * @param pvName */ public static void testUpdatePv(KubernetesClient kubernetesClient,String pvName){ try { PersistentVolume pv=kubernetesClient.persistentVolumes().withName(pvName).get(); System.out.println("更新前的pv信息==============================================="); System.out.println("========="+jsonFormatter(pv)); pv.getMetadata().getLabels().put("app", "hzbtestpv-new2"); pv.getStatus().setPhase("Available"); kubernetesClient.persistentVolumes().withName(pvName).update(pv); PersistentVolume pvnew=kubernetesClient.persistentVolumes().withName(pvName).get(); System.out.println("更新后的pv信息==============================================="); System.out.println("========="+jsonFormatter(pvnew)); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } /** * 扩容pv * @param kubernetesClient * @param pvName 要扩容的pv名字。 * @param quantityAmount 扩容的规格 */ public static void expanseStorage(KubernetesClient kubernetesClient,String pvName,String quantityAmount){ PersistentVolume pv=kubernetesClient.persistentVolumes().withName(pvName).get(); System.out.println("扩容前的pv信息==============================================="); System.out.println("========="+jsonFormatter(pv)); Quantity newquantity=new Quantity(); newquantity.setAmount(quantityAmount); pv.getSpec().getCapacity().put("storage", newquantity); kubernetesClient.persistentVolumes().withName(pvName).update(pv); PersistentVolume pvnew=kubernetesClient.persistentVolumes().withName(pvName).get(); System.out.println("扩容后的pv信息==============================================="); System.out.println("========="+jsonFormatter(pvnew)); } /** * 获取pvc列表 * @param kubernetesClient */ public static void testPvcList(KubernetesClient kubernetesClient){ if(kubernetesClient!=null){ PersistentVolumeClaimList pVolumeClaimList=kubernetesClient.persistentVolumeClaims().list(); List<PersistentVolumeClaim> pvcList=pVolumeClaimList.getItems(); for( PersistentVolumeClaim pvc:pvcList){ System.out.println("显示一个pvc信息==============================================="); System.out.println("========="+jsonFormatter(pvc)); } } } /** * 创建pvc信息 * @param kubernetesClient */ public static void testCreatePvc(KubernetesClient kubernetesClient){ PersistentVolumeClaim pvc=new PersistentVolumeClaim(); pvc.setApiVersion("v1"); pvc.setKind("PersistentVolumeClaim"); ObjectMeta meta=new ObjectMeta(); meta.setName("mysql-hzb-pvc"); //设置pvc的metadata pvc.setMetadata(meta); PersistentVolumeClaimSpec pvcs=new PersistentVolumeClaimSpec(); List<String> accessModes=new ArrayList<String>(); accessModes.add("ReadWriteOnce"); //设置Spec的accessModes pvcs.setAccessModes(accessModes); //设置Spec绑定的pv pvcs.setVolumeName("mysql-hzb-pv"); ResourceRequirements resources=new ResourceRequirements(); Map<String, Quantity> requests=new HashMap<String, Quantity>(); Quantity quantity=new Quantity(); quantity.setAmount("2Gi"); requests.put("storage", quantity); resources.setRequests(requests); //设置Spec的Resources pvcs.setResources(resources); LabelSelector labelSelector=new LabelSelector(); Map<String,String> matchLabels=new HashMap<String, String>(); matchLabels.put("app", "mysql-hzb-pvc-lbl"); labelSelector.setMatchLabels(matchLabels); //设置Spec的Selector pvcs.setSelector(labelSelector); //设置pvc的Spec pvc.setSpec(pvcs); try { //将pvc信息存储到服务端 kubernetesClient.persistentVolumeClaims().create(pvc); System.out.println("创建pvc成功"); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } /** * 删除指定的pvc信息 * @param kubernetesClient * @param pvcName */ public static void testDeletePvc(KubernetesClient kubernetesClient,String pvcName){ try { kubernetesClient.persistentVolumeClaims().withName(pvcName).delete(); System.out.println("成功删除pvc========"+pvcName); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } /** * 更新指定的pvc信息 * @param kubernetesClient * @param pvcName */ public static void testUpdatePvc(KubernetesClient kubernetesClient,String pvcName){ try { PersistentVolumeClaim pvc=kubernetesClient.persistentVolumeClaims().withName(pvcName).get(); System.out.println("更新前的pvc信息==============================================="); System.out.println("========="+jsonFormatter(pvc)); //pvc.getSpec().getAdditionalProperties().put("appName", "宠物商店"); pvc.getSpec().getSelector().getMatchLabels().put("appName", "pet-shop"); kubernetesClient.persistentVolumeClaims().withName(pvcName).update(pvc); PersistentVolumeClaim pvcnew=kubernetesClient.persistentVolumeClaims().withName(pvcName).get(); System.out.println("更新后的pvc信息==============================================="); System.out.println("========="+jsonFormatter(pvcnew)); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } /** * 连接k8s master服务器 * @return */ public static KubernetesClient connectK8s(){ String namespace = "default"; String master = "http://172.16.70.73:8080/"; KubernetesClient client=null; Config config = new ConfigBuilder().withMasterUrl(master) .withTrustCerts(true) .withNamespace(namespace).build(); try { client = new DefaultKubernetesClient(config); }catch (Exception e) { logger.error(e.getMessage(), e); } return client; } /** * 格式化json * @param uglyJSONString * @return */ public static String jsonFormatter(Object uglyJSON){ if(uglyJSON == null ){ return ""; } Gson gson = new GsonBuilder().setPrettyPrinting().create(); JsonParser jp = new JsonParser(); String prettyJsonString = gson.toJson(uglyJSON); return prettyJsonString; } }
