在centos 7.0上启动wso2应用编程接口管理器v2.0.0失败

Question

我正在尝试WSO2应用编程接口管理器2.0，但启动服务器失败。你愿意帮个忙吗？非常感谢，迈克尔

下面是版本信息。

[wso2@srv11 bin]$ ./wso2server.sh --version

WSO2 API Manager v2.0.0  
WSO2 Carbon Framework v4.4.7

但是当我使用"wso2server.sh -- start“命令启动API Manager时，我在wso2carbon.log中发现了以下错误信息。

ID: [-1234] [] [2016-08-15 09:48:32,824]  INFO {org.wso2.andes.server.security.auth.manager.PrincipalDatabaseAuthenticationManager} -  Initialised PLAIN SASL provider successfully {org.wso2.andes.server.security.auth.manager.PrincipalDatabaseAuthenticationManager}
TID: [-1234] [] [2016-08-15 09:48:32,825]  INFO {org.wso2.andes.server.security.auth.manager.PrincipalDatabaseAuthenticationManager} -  Additional SASL providers successfully registered. {org.wso2.andes.server.security.auth.manager.PrincipalDatabaseAuthenticationManager}
TID: [-1234] [] [2016-08-15 09:48:32,825]  INFO {org.wso2.andes.server.security.auth.manager.PrincipalDatabaseAuthenticationManager} -  Registering UserManagementMBean {org.wso2.andes.server.security.auth.manager.PrincipalDatabaseAuthenticationManager}
TID: [-1] [] [2016-08-15 09:48:35,634]  WARN {java.util.prefs.FileSystemPreferences} -  Could not lock System prefs. Unix error code 32577. {java.util.prefs.FileSystemPreferences}
TID: [-1] [] [2016-08-15 09:48:35,635]  WARN {java.util.prefs.FileSystemPreferences} -  Couldn't flush system prefs: java.util.prefs.BackingStoreException: Couldn't get file lock. {java.util.prefs.FileSystemPreferences}
TID: [-1] [] [2016-08-15 09:48:52,850]  WARN {org.wso2.carbon.apimgt.gateway.throttling.util.KeyTemplateRetriever} -  Failed retrieving throttling data from remote endpoint: Connection refused. Retrying after 15 seconds... {org.wso2.carbon.apimgt.gateway.throttling.util.KeyTemplateRetriever}
TID: [-1] [] [2016-08-15 09:48:52,862]  WARN {org.wso2.carbon.apimgt.gateway.throttling.util.BlockingConditionRetriever} -  Failed retrieving Blocking Conditions from remote endpoint: Connection refused. Retrying after 15 seconds... {org.wso2.carbon.apimgt.gateway.throttling.util.BlockingConditionRetriever}
TID: [-1] [] [2016-08-15 09:48:53,073]  WARN {org.wso2.carbon.application.deployer.internal.AppDeployerServiceComponent} -  Waiting for required OSGi services: org.wso2.carbon.application.deployer.synapse.service.SynapseAppDeployerService, {org.wso2.carbon.application.deployer.internal.AppDeployerServiceComponent}
TID: [-1] [] [2016-08-15 09:48:53,092]  WARN {org.wso2.carbon.core.internal.StartupFinalizerServiceComponent} -  Waiting for required OSGi services: org.wso2.carbon.application.deployer.service.CappDeploymentService,org.wso2.carbon.server.admin.common.IServerAdmin,org.wso2.carbon.throttling.agent.ThrottlingAgent, {org.wso2.carbon.core.internal.StartupFinalizerServiceComponent}
TID: [-1] [] [2016-08-15 09:49:05,628]  WARN {java.util.prefs.FileSystemPreferences} -  Could not lock System prefs. Unix error code 32577. {java.util.prefs.FileSystemPreferences}
TID: [-1] [] [2016-08-15 09:49:05,628]  WARN {java.util.prefs.FileSystemPreferences} -  Couldn't flush system prefs: java.util.prefs.BackingStoreException: Couldn't get file lock. {java.util.prefs.FileSystemPreferences}
TID: [-1] [] [2016-08-15 09:49:07,854]  WARN {org.wso2.carbon.apimgt.gateway.throttling.util.KeyTemplateRetriever} -  Failed retrieving throttling data from remote endpoint: Connection refused. Retrying after 15 seconds... {org.wso2.carbon.apimgt.gateway.throttling.util.KeyTemplateRetriever}
TID: [-1] [] [2016-08-15 09:49:07,865]  WARN {org.wso2.carbon.apimgt.gateway.throttling.util.BlockingConditionRetriever} -  Failed retrieving Blocking Conditions from remote endpoint: Connection refused. Retrying after 15 seconds... {org.wso2.carbon.apimgt.gateway.throttling.util.BlockingConditionRetriever}
TID: [-1] [] [2016-08-15 09:49:24,583]  WARN {org.wso2.carbon.apimgt.gateway.throttling.util.KeyTemplateRetriever} -  Failed retrieving throttling data from remote endpoint: Connection refused. Retrying after 15 seconds... {org.wso2.carbon.apimgt.gateway.throttling.util.KeyTemplateRetriever}
TID: [-1] [] [2016-08-15 09:49:24,593]  WARN {org.wso2.carbon.apimgt.gateway.throttling.util.BlockingConditionRetriever} -  Failed retrieving Blocking Conditions from remote endpoint: Connection refused. Retrying after 15 seconds... {org.wso2.carbon.apimgt.gateway.throttling.util.BlockingConditionRetriever}

Answer 1

出现此警告的原因可能是Java首选项子系统无法写入目录/etc/.java/.systemPrefs。您能否验证/etc/.java/.systemPrefs目录是否存在于您的系统中？如果它存在，它对运行JVM实例的用户是可写的吗？如果没有，请提供权限并重新启动APIM。

如果上面的方法不起作用，您也可以尝试下面的解决方法。

1)在运行JVM的用户可访问的位置创建目录，并具有下列子结构。/..java/.systemPrefs

2)使用Java选项-Djava.util.prefs.systemRoot=<CREATED_DIR>/.java启动WSO2 APIM服务器

Answer 2

关于阻塞条件异常

TID: [-1] [] [2016-08-19 17:33:32,455]  WARN {org.wso2.carbon.apimgt.gateway.throttling.util.BlockingConditionRetriever} -  Failed retrieving Blocking Conditions from remote endpoint: Connection refused. Retrying after 15 seconds... {org.wso2.carbon.apimgt.gateway.throttling.util.BlockingConditionRetriever}

这只对我使用集群部署x1发布者、x1存储、x1网关管理器、x2网关工作者显示。独立安装时不会出现此问题。

我尝试设置一个流量管理器( tm )节点，并将网关和发布方节点指向tm节点(https://docs.wso2.com/display/CLUSTER44x/Clustering+API+Manager+2.0.0)，但是这不能解决问题。

我假设，在应用java系统首选项修复后，您仍然遇到阻塞条件警告，但不再遇到Unix文件锁异常？