首先春季開機皮疹，然後在Pivotal Cloud Foundry中自動啓動

Question

當我推動彈簧啓動 - 1.3.3.RELEASE時，它會崩潰很長時間並最終啓動。但最近的事件顯示崩潰，但目前的狀態一直在運行。

springboot增加了embed-tomcat -8.0.32。

錯誤：

2017-01-16T16:29:12.670-05:00 [APP/PROC/WEB/0] [OUT] at org.apache.catalina.startup.Tomcat.start(Tomcat.java:345) ~[tomcat-embed-core-8.0.32.jar!/:8.0.32] 
2017-01-16T16:29:12.685-05:00 [APP/PROC/WEB/0] [ERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
2017-01-16T16:29:12.685-05:00 [APP/PROC/WEB/0] [ERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
2017-01-16T16:29:12.685-05:00 [APP/PROC/WEB/0] [ERR] at java.lang.reflect.Method.invoke(Method.java:498) 
2017-01-16T16:29:12.685-05:00 [APP/PROC/WEB/0] [ERR] Exception in thread "main" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException 
2017-01-16T16:29:12.685-05:00 [APP/PROC/WEB/0] [ERR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
2017-01-16T16:29:12.685-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:62) 
2017-01-16T16:29:12.685-05:00 [APP/PROC/WEB/0] [ERR] Caused by: org.springframework.context.ApplicationContextException: 
Unable to start embedded container; nested exception is org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat 
2017-01-16T16:29:12.685-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:54) 
2017-01-16T16:29:12.685-05:00 [APP/PROC/WEB/0] [ERR] Caused by: java.lang.reflect.InvocationTargetException 
2017-01-16T16:29:12.685-05:00 [APP/PROC/WEB/0] [ERR] at java.lang.Thread.run(Thread.java:745) 
2017-01-16T16:29:12.685-05:00 [APP/PROC/WEB/0] [ERR] ... 1 more 
2017-01-16T16:29:12.686-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532) 
2017-01-16T16:29:12.686-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:133) 
2017-01-16T16:29:12.687-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) 
2017-01-16T16:29:12.688-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) 
2017-01-16T16:29:12.688-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:361) 
2017-01-16T16:29:12.688-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:766) 
2017-01-16T16:29:12.688-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1191) 
2017-01-16T16:29:12.688-05:00 [APP/PROC/WEB/0] [ERR] at bosch.cose.na.enterprise.CoseNaEnterpriseApplication.main(CoseNaEnterpriseApplication.java:19) 
2017-01-16T16:29:12.688-05:00 [APP/PROC/WEB/0] [ERR] ... 6 more 
2017-01-16T16:29:12.689-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.<init>(TomcatEmbeddedServletContainer.java:76) 
2017-01-16T16:29:12.689-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:160) 
2017-01-16T16:29:12.689-05:00 [APP/PROC/WEB/0] [ERR] at org.apache.catalina.startup.Tomcat.start(Tomcat.java:345) 
2017-01-16T16:29:12.689-05:00 [APP/PROC/WEB/0] [ERR] Caused by: org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat 
2017-01-16T16:29:12.689-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:168) 
2017-01-16T16:29:12.689-05:00 [APP/PROC/WEB/0] [ERR] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153) 
2017-01-16T16:29:12.689-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:99) 
2017-01-16T16:29:12.689-05:00 [APP/PROC/WEB/0] [ERR] ... 18 more 
2017-01-16T16:29:12.689-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:130) 
2017-01-16T16:29:12.689-05:00 [APP/PROC/WEB/0] [ERR] ... 13 more 
2017-01-16T16:29:12.689-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:89) 
2017-01-16T16:29:12.689-05:00 [APP/PROC/WEB/0] [ERR] at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getTomcatEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:457) 
2017-01-16T16:29:12.689-05:00 [APP/PROC/WEB/0] [ERR] Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardServer[-1]] 
2017-01-16T16:29:12.690-05:00 [APP/PROC/WEB/0] [ERR] ... 22 more 
2017-01-16T16:29:12.690-05:00 [APP/PROC/WEB/0] [ERR] at org.apache.catalina.core.StandardService.startInternal(StandardService.java:441) 
2017-01-16T16:29:12.690-05:00 [APP/PROC/WEB/0] [ERR] Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Tomcat]] 
2017-01-16T16:29:12.690-05:00 [APP/PROC/WEB/0] [ERR] at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:769) 
2017-01-16T16:29:12.690-05:00 [APP/PROC/WEB/0] [ERR] Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat]] 
2017-01-16T16:29:12.690-05:00 [APP/PROC/WEB/0] [ERR] ... 20 more 
2017-01-16T16:29:12.690-05:00 [APP/PROC/WEB/0] [ERR] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147) 
2017-01-16T16:29:12.690-05:00 [APP/PROC/WEB/0] [ERR] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:924) 
2017-01-16T16:29:12.690-05:00 [APP/PROC/WEB/0] [ERR] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153) 
2017-01-16T16:29:12.690-05:00 [APP/PROC/WEB/0] [ERR] ... 24 more 
2017-01-16T16:29:12.690-05:00 [APP/PROC/WEB/0] [ERR] Caused by: org.apache.catalina.LifecycleException: A child container failed during start 
2017-01-16T16:29:12.690-05:00 [APP/PROC/WEB/0] [ERR] at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) 
2017-01-16T16:29:12.788-05:00 [APP/PROC/WEB/0] [OUT] Exit status 0 
2017-01-16T16:29:12.803-05:00 [CELL/0] [OUT] Exit status 0 

請讓我知道，如果有人知道的原因。

如果在很長時間的過程中啓動應用程序，PCF會立即顯示崩潰狀態？

Answer 1

默認情況下，Tomcat包含在Spring Boot中。你總是可以覆蓋它。也就是說，一個簡單的Spring Boot應用程序只需要很少的時間來啓動。

當您將LRP（microservice）推送到PCF時，創建容器並且分段過程完成後，LRP啓動並進入運行狀態的默認時間間隔爲60秒。如果您的應用需要更多時間，您可以使用-t選項cf push覆蓋這些設置。

更正確的問題應該是，爲什麼你的應用程序需要超過60秒的啓動？我建議你嘗試在本地運行Spring啓動應用程序，並找出啓動所需的時間。如果您的應用超過60秒，我建議您重新設計應用中的步驟。

如果您正在加載任何數據，請按照12 factor對其進行重新設計。

希望這會有所幫助！

Answer 2

您可能遇到Tomcat在啓動時阻塞的問題，等待系統上的熵初始化SecureRandom。請參閱Tomcat wiki以獲取完整說明。要查看是否發生了這種情況，請嘗試配置您的應用的熵源以使用非阻止源：

cf set-env <app name> JAVA_OPTS "-Djava.security.egd=file:///dev/urandom"