/**
* Remove kubernetes services if available for application cluster.
*
* @param applicationId
* @param clusterId
*/
public static void removeKubernetesServices(String applicationId, String clusterId) {
ClusterContext clusterContext =
CloudControllerContext.getInstance().getClusterContext(clusterId);
if (clusterContext != null) {
String kubernetesClusterId = clusterContext.getKubernetesClusterId();
if (org.apache.commons.lang3.StringUtils.isNotBlank(kubernetesClusterId)) {
KubernetesClusterContext kubernetesClusterContext =
CloudControllerContext.getInstance().getKubernetesClusterContext(kubernetesClusterId);
if (kubernetesClusterContext != null) {
KubernetesApiClient kubernetesApiClient = kubernetesClusterContext.getKubApi();
for (KubernetesService kubernetesService : clusterContext.getKubernetesServices()) {
log.info(
String.format(
"Deleting kubernetes service: [application-id] %s " + "[service-id] %s",
applicationId, kubernetesService.getId()));
try {
kubernetesApiClient.deleteService(kubernetesService.getId());
} catch (KubernetesClientException e) {
log.error(
String.format(
"Could not delete kubernetes service: [application-id] %s "
+ "[service-id] %s",
applicationId, kubernetesService.getId()));
}
}
}
}
}
}
/**
* Terminate a container by member id
*
* @param memberId
* @return
* @throws MemberTerminationFailedException
*/
public MemberContext terminateContainer(String memberId) throws MemberTerminationFailedException {
Lock lock = null;
try {
lock = CloudControllerContext.getInstance().acquireMemberContextWriteLock();
handleNullObject(memberId, "Could not terminate container, member id is null");
MemberContext memberContext =
CloudControllerContext.getInstance().getMemberContextOfMemberId(memberId);
handleNullObject(
memberContext,
"Could not terminate container, member context not found: [member-id] " + memberId);
String clusterId = memberContext.getClusterId();
handleNullObject(
clusterId, "Could not terminate container, cluster id is null: [member-id] " + memberId);
ClusterContext clusterContext =
CloudControllerContext.getInstance().getClusterContext(clusterId);
handleNullObject(
clusterContext,
String.format(
"Could not terminate container, cluster context not found: "
+ "[cluster-id] %s [member-id] %s",
clusterId, memberId));
String kubernetesClusterId = clusterContext.getKubernetesClusterId();
handleNullObject(
kubernetesClusterId,
String.format(
"Could not terminate container, kubernetes cluster "
+ "context id is null: [cluster-id] %s [member-id] %s",
clusterId, memberId));
KubernetesClusterContext kubernetesClusterContext =
CloudControllerContext.getInstance().getKubernetesClusterContext(kubernetesClusterId);
handleNullObject(
kubernetesClusterContext,
String.format(
"Could not terminate container, kubernetes cluster "
+ "context not found: [cluster-id] %s [member-id] %s",
clusterId, memberId));
KubernetesApiClient kubApi = kubernetesClusterContext.getKubApi();
try {
log.info(
String.format(
"Removing kubernetes pod: [application] %s [cartridge] %s [member] %s [pod] %s",
memberContext.getApplicationId(),
memberContext.getCartridgeType(),
memberContext.getMemberId(),
memberContext.getKubernetesPodId()));
// Remove pod
kubApi.deletePod(memberContext.getKubernetesPodId());
// Persist changes
CloudControllerContext.getInstance().persist();
log.info(
String.format(
"Kubernetes pod removed successfully: [application] %s [cartridge] %s "
+ "[member] %s [pod] %s",
memberContext.getApplicationId(),
memberContext.getCartridgeType(),
memberContext.getMemberId(),
memberContext.getKubernetesPodId()));
} catch (KubernetesClientException ignore) {
// we can't do nothing here
log.warn(
String.format("Could not delete pod: [pod-id] %s", memberContext.getKubernetesPodId()));
}
return memberContext;
} finally {
if (lock != null) {
CloudControllerContext.getInstance().releaseWriteLock(lock);
}
}
}
/**
* Terminate all the containers belong to a cluster by cluster id.
*
* @param clusterId
* @return
* @throws InvalidClusterException
*/
public MemberContext[] terminateContainers(String clusterId) throws InvalidClusterException {
Lock lock = null;
try {
lock = CloudControllerContext.getInstance().acquireMemberContextWriteLock();
ClusterContext clusterContext =
CloudControllerContext.getInstance().getClusterContext(clusterId);
handleNullObject(
clusterContext,
"Could not terminate containers, cluster not found: [cluster-id] " + clusterId);
String kubernetesClusterId = clusterContext.getKubernetesClusterId();
handleNullObject(
kubernetesClusterId,
"Could not terminate containers, kubernetes cluster id not found: "
+ "[cluster-id] "
+ clusterId);
KubernetesClusterContext kubClusterContext =
CloudControllerContext.getInstance().getKubernetesClusterContext(kubernetesClusterId);
handleNullObject(
kubClusterContext,
"Could not terminate containers, kubernetes cluster not found: "
+ "[kubernetes-cluster-id] "
+ kubernetesClusterId);
KubernetesApiClient kubApi = kubClusterContext.getKubApi();
// Remove kubernetes services
List<KubernetesService> kubernetesServices = clusterContext.getKubernetesServices();
if (kubernetesServices != null) {
for (KubernetesService kubernetesService : kubernetesServices) {
try {
kubApi.deleteService(kubernetesService.getId());
int allocatedPort = kubernetesService.getPort();
kubClusterContext.deallocatePort(allocatedPort);
} catch (KubernetesClientException e) {
log.error("Could not remove kubernetes service: [cluster-id] " + clusterId, e);
}
}
}
List<MemberContext> memberContextsRemoved = new ArrayList<MemberContext>();
List<MemberContext> memberContexts =
CloudControllerContext.getInstance().getMemberContextsOfClusterId(clusterId);
if (memberContexts != null) {
for (MemberContext memberContext : memberContexts) {
try {
MemberContext memberContextRemoved = terminateContainer(memberContext.getMemberId());
memberContextsRemoved.add(memberContextRemoved);
} catch (MemberTerminationFailedException e) {
String message =
"Could not terminate container: [member-id] " + memberContext.getMemberId();
log.error(message);
}
}
}
// Persist changes
CloudControllerContext.getInstance().persist();
return memberContextsRemoved.toArray(new MemberContext[memberContextsRemoved.size()]);
} finally {
if (lock != null) {
CloudControllerContext.getInstance().releaseWriteLock(lock);
}
}
}
/**
* Creates and returns proxy services for the cluster.
*
* @param kubernetesApi
* @param clusterContext
* @param kubernetesCluster
* @param kubernetesClusterContext
* @throws KubernetesClientException
*/
private void createKubernetesServices(
KubernetesApiClient kubernetesApi,
ClusterContext clusterContext,
KubernetesCluster kubernetesCluster,
KubernetesClusterContext kubernetesClusterContext)
throws KubernetesClientException {
String clusterId = clusterContext.getClusterId();
String cartridgeType = clusterContext.getCartridgeUuid();
Cartridge cartridge = CloudControllerContext.getInstance().getCartridge(cartridgeType);
if (cartridge == null) {
String message =
"Could not create kubernetes services, cartridge not found: [cartridge] " + cartridgeType;
log.error(message);
throw new RuntimeException(message);
}
String sessionAffinity = null;
Property sessionAffinityProperty =
cartridge.getProperties().getProperty(KUBERNETES_SERVICE_SESSION_AFFINITY);
if (sessionAffinityProperty != null) {
sessionAffinity = sessionAffinityProperty.getValue();
}
List<KubernetesService> kubernetesServices = clusterContext.getKubernetesServices();
if (kubernetesServices == null) {
kubernetesServices = new ArrayList<KubernetesService>();
}
// Prepare minion public IP addresses
List<String> minionPrivateIPList = new ArrayList<String>();
List<String> minionPublicIPList = new ArrayList<String>();
KubernetesHost[] kubernetesHosts = kubernetesCluster.getKubernetesHosts();
if ((kubernetesHosts == null)
|| (kubernetesHosts.length == 0)
|| (kubernetesHosts[0] == null)) {
throw new RuntimeException(
"Hosts not found in kubernetes cluster: [cluster] " + kubernetesCluster.getClusterUuid());
}
for (KubernetesHost host : kubernetesHosts) {
if (host != null) {
minionPrivateIPList.add(host.getPrivateIPAddress());
minionPublicIPList.add(host.getPublicIPAddress());
}
}
if (log.isDebugEnabled()) {
log.debug(String.format("Minion private IPs: %s", minionPrivateIPList));
}
Collection<ClusterPortMapping> clusterPortMappings =
CloudControllerContext.getInstance()
.getClusterPortMappings(clusterContext.getApplicationUuid(), clusterId);
if (clusterPortMappings != null) {
for (ClusterPortMapping clusterPortMapping : clusterPortMappings) {
// Skip if already created
int containerPort = clusterPortMapping.getPort();
if (kubernetesServiceExist(kubernetesServices, containerPort)) {
continue;
}
// Find next service sequence no
long serviceSeqNo = kubernetesClusterContext.getServiceSeqNo().incrementAndGet();
String serviceId =
KubernetesIaasUtil.fixSpecialCharacters("service" + "-" + (serviceSeqNo));
String serviceLabel = DigestUtils.md5Hex(clusterId);
if (log.isInfoEnabled()) {
log.info(
String.format(
"Creating kubernetes service: [cluster] %s [service] %s [service-label] %s "
+ "[protocol] %s [service-port] %d [container-port] %s",
clusterId,
serviceId,
serviceLabel,
clusterPortMapping.getProtocol(),
clusterPortMapping.getKubernetesServicePort(),
containerPort));
}
// Create kubernetes service for port mapping
int servicePort = clusterPortMapping.getKubernetesServicePort();
String serviceType = clusterPortMapping.getKubernetesServiceType();
String containerPortName =
KubernetesIaasUtil.preparePortNameFromPortMapping(clusterPortMapping);
try {
// If kubernetes service is already created, skip creating a new one
if (kubernetesApi.getService(serviceId) == null) {
// Services need to use minions private IP addresses for creating iptable rules
kubernetesApi.createService(
serviceId,
serviceLabel,
servicePort,
serviceType,
containerPortName,
containerPort,
sessionAffinity);
} else {
if (log.isDebugEnabled()) {
log.debug(
String.format(
"Kubernetes service is already created: [cluster] %s [service] %s "
+ "[protocol] %s [service-port] %d [container-port] %d",
clusterId,
serviceId,
clusterPortMapping.getProtocol(),
servicePort,
containerPort));
}
}
} finally {
// Persist kubernetes service sequence no
CloudControllerContext.getInstance().persist();
}
try {
Thread.sleep(1000);
} catch (InterruptedException ignore) {
}
Service service = kubernetesApi.getService(serviceId);
KubernetesService kubernetesService = new KubernetesService();
kubernetesService.setId(service.getMetadata().getName());
kubernetesService.setPortalIP(service.getSpec().getClusterIP());
// Expose minions public IP addresses as they need to be accessed by external networks
String[] minionPublicIPArray =
minionPublicIPList.toArray(new String[minionPublicIPList.size()]);
kubernetesService.setPublicIPs(minionPublicIPArray);
kubernetesService.setProtocol(clusterPortMapping.getProtocol());
kubernetesService.setPortName(clusterPortMapping.getName());
String kubernetesServiceType = service.getSpec().getType();
kubernetesService.setServiceType(kubernetesServiceType);
if (kubernetesServiceType.equals(KubernetesConstants.NODE_PORT)) {
kubernetesService.setPort(service.getSpec().getPorts().get(0).getNodePort());
} else {
kubernetesService.setPort(service.getSpec().getPorts().get(0).getPort());
}
kubernetesService.setContainerPort(containerPort);
kubernetesServices.add(kubernetesService);
if (log.isInfoEnabled()) {
log.info(
String.format(
"Kubernetes service successfully created: [cluster] %s [service] %s "
+ "[protocol] %s [node-port] %d [container-port] %s",
clusterId,
serviceId,
clusterPortMapping.getProtocol(),
servicePort,
containerPort));
}
}
}
// Add kubernetes services to cluster context and persist
clusterContext.setKubernetesServices(kubernetesServices);
CloudControllerContext.getInstance().persist();
}
/**
* Create new pod and pass environment variables.
*
* @param memberContext
* @param kubernetesApi
* @param kubernetesClusterContext
* @throws KubernetesClientException
*/
private void createPod(
ClusterContext clusterContext,
MemberContext memberContext,
KubernetesApiClient kubernetesApi,
KubernetesClusterContext kubernetesClusterContext)
throws KubernetesClientException {
String applicationId = memberContext.getApplicationId();
String cartridgeType = memberContext.getCartridgeType();
String clusterId = memberContext.getClusterId();
String memberId = memberContext.getMemberId();
if (log.isInfoEnabled()) {
log.info(
String.format(
"Creating kubernetes pod: [application] %s [cartridge] %s [member] %s",
applicationId, cartridgeType, memberId));
}
Partition partition = memberContext.getPartition();
if (partition == null) {
String message =
String.format(
"Partition not found in member context: [application] %s [cartridge] %s "
+ "[member] %s ",
applicationId, cartridgeType, memberId);
log.error(message);
throw new RuntimeException(message);
}
Cartridge cartridge = CloudControllerContext.getInstance().getCartridge(cartridgeType);
if (cartridge == null) {
String message = "Could not find cartridge: [cartridge] " + cartridgeType;
log.error(message);
throw new RuntimeException(message);
}
// Set default values to zero to avoid cpu and memory restrictions
int cpu = Integer.getInteger(KUBERNETES_CONTAINER_CPU_DEFAULT, 0);
int memory = Integer.getInteger(KUBERNETES_CONTAINER_MEMORY_DEFAULT, 0);
Property cpuProperty = cartridge.getProperties().getProperty(KUBERNETES_CONTAINER_CPU);
if (cpuProperty != null) {
cpu = Integer.parseInt(cpuProperty.getValue());
}
Property memoryProperty = cartridge.getProperties().getProperty(KUBERNETES_CONTAINER_MEMORY);
if (memoryProperty != null) {
memory = Integer.parseInt(memoryProperty.getValue());
}
IaasProvider iaasProvider =
CloudControllerContext.getInstance()
.getIaasProviderOfPartition(cartridge.getUuid(), partition.getUuid());
if (iaasProvider == null) {
String message = "Could not find iaas provider: [partition] " + partition.getUuid();
log.error(message);
throw new RuntimeException(message);
}
// Add dynamic payload to the member context
memberContext.setDynamicPayload(payload.toArray(new NameValuePair[payload.size()]));
// Create pod
long podSeqNo = kubernetesClusterContext.getPodSeqNo().incrementAndGet();
String podId = "pod" + "-" + podSeqNo;
String podLabel = DigestUtils.md5Hex(clusterId);
String dockerImage = iaasProvider.getImage();
List<EnvVar> environmentVariables =
KubernetesIaasUtil.prepareEnvironmentVariables(clusterContext, memberContext);
List<ContainerPort> ports =
KubernetesIaasUtil.convertPortMappings(Arrays.asList(cartridge.getPortMappings()));
log.info(
String.format(
"Starting pod: [application] %s [cartridge] %s [member] %s "
+ "[cpu] %d [memory] %d MB",
memberContext.getApplicationId(),
memberContext.getCartridgeType(),
memberContext.getMemberId(),
cpu,
memory));
kubernetesApi.createPod(podId, podLabel, dockerImage, cpu, memory, ports, environmentVariables);
log.info(
String.format(
"Pod started successfully: [application] %s [cartridge] %s [member] %s "
+ "[pod] %s [cpu] %d [memory] %d MB",
memberContext.getApplicationId(),
memberContext.getCartridgeType(),
memberContext.getMemberId(),
podId,
cpu,
memory));
// Add pod id to member context
memberContext.setKubernetesPodId(podId);
memberContext.setKubernetesPodLabel(podLabel);
// Create instance metadata
InstanceMetadata instanceMetadata = new InstanceMetadata();
instanceMetadata.setImageId(dockerImage);
instanceMetadata.setCpu(cpu);
instanceMetadata.setRam(memory);
memberContext.setInstanceMetadata(instanceMetadata);
// Persist cloud controller context
CloudControllerContext.getInstance().persist();
}
private Pod waitForPodToBeActivated(
MemberContext memberContext, KubernetesApiClient kubernetesApi)
throws KubernetesClientException, InterruptedException {
Pod pod;
boolean podCreated = false;
boolean podRunning = false;
long startTime = System.currentTimeMillis();
while (!podRunning) {
pod = kubernetesApi.getPod(memberContext.getKubernetesPodId());
if (pod != null) {
podCreated = true;
if (pod.getStatus().getPhase().equals(KubernetesConstants.POD_STATUS_RUNNING)) {
log.info(
String.format(
"Pod status changed to running: [application] %s [cartridge] %s [member] %s "
+ "[pod] %s",
memberContext.getApplicationId(),
memberContext.getCartridgeType(),
memberContext.getMemberId(),
pod.getMetadata().getName()));
return pod;
} else {
log.info(
String.format(
"Waiting pod status to be changed to running: [application] %s "
+ "[cartridge] %s [member] %s [pod] %s",
memberContext.getApplicationId(),
memberContext.getCartridgeType(),
memberContext.getMemberId(),
pod.getMetadata().getName()));
}
} else {
log.info(
String.format(
"Waiting for pod to be created: [application] %s "
+ "[cartridge] %s [member] %s [pod] %s",
memberContext.getApplicationId(),
memberContext.getCartridgeType(),
memberContext.getMemberId(),
memberContext.getKubernetesPodId()));
}
if ((System.currentTimeMillis() - startTime) > podActivationTimeout) {
break;
}
Thread.sleep(5000);
}
String message;
if (podCreated) {
// Pod created but status did not change to running
message =
String.format(
"Pod status did not change to running within %d sec: "
+ "[application] %s [cartridge] %s [member] %s [pod] %s",
(podActivationTimeout.intValue() / 1000),
memberContext.getApplicationId(),
memberContext.getCartridgeType(),
memberContext.getMemberId(),
memberContext.getKubernetesPodId());
log.error(message);
} else {
// Pod did not create
message =
String.format(
"Pod did not create within %d sec: "
+ "[application] %s [cartridge] %s [member] %s [pod] %s",
(podActivationTimeout.intValue() / 1000),
memberContext.getApplicationId(),
memberContext.getCartridgeType(),
memberContext.getMemberId(),
memberContext.getKubernetesPodId());
log.error(message);
}
throw new RuntimeException(message);
}