api-gateway实践（07）新服务网关

应用地址：http://10.110.20.191:8080/api-gateway-engine/

一、准备工作

1、xshell登陆云主机

1.1、配置链接

 

 

1.2、链接成功

1.3、关闭防火墙

查看centos版本号

命令格式：：

查看状态：service iptables status

临时开启：service iptables start

临时关闭：service iptables stop

临时关闭防火墙

永久关闭防火墙 

命令格式：：

永久关闭：chkconfig iptables off 

永久开启：chkconfig iptables on

2、xftp登陆云主机

2.1、配置链接

2.2、链接成功

二、安装中间件

tomcat8.5.15和jetty9.3.15二选一即可！

tomcat8.0需要验证一下！！

1、jdk1.8

1.1、检查是否已安装

首先判断是否已经安装java

然后判断是否设置了环境变量，如果已经安装，提示如下：

然后判断是否设置了环境变量，如果没有安装，提示如下：

1.2、安装过程

上传压缩包

解压缩到指定目录

tar -zxvf  jdk-8u131-linux-x64.tar.gz

修改环境变量

生效配置文件

1.3、验证安装

验证java和javac

查看修改内容

 

2、tomcat8.5.15

2.1、检查是否已安装

2.2、安装过程

上传压缩文件

解压到指定目录,修改目录的名字为tomcat8.5

增加环境变量配置

生效环境变量配置

 

2.3、验证安装

3、jetty9.3.15

3.1、检查是否已安装

 

3.2、安装过程

上传解压

配置环境变量

生效修改的配置

创建jetty的外置发布目录 jettyWebApps

mkdir /opt/jettyWebApps

初始化jetty的外置发布目录jettyWebApps

java -jar $JETTY_HOME/start.jar --add-to-startd=http,plus,annotations,jsp,deploy

现在，可以往jetWebApps/webapps发布我们的web应用了！

3.3、验证安装（参见检查是否已安装！）

三、发布应用

tomcat8.5.15和jetty9.3.15二选一即可！

tomcat8.0需要验证一下！！

1、tomcat8.5

1.1、发布应用

更新代码，编译打包

上传包到tomcat的webapps

修改war包的名字

1.2、启动应用

$TOMCAT_HOME/bin/startup.sh

1.3、验证应用

访问应用地址：

http://10.110.20.191:8080/api-gateway-engine/

如果失败，查看防火墙是否已经关闭，service iptables status

临时关闭防火墙：service iptables stop

永久关闭防火墙：chkconfig iptables off

访问地址：http://10.110.20.191:8080/api-gateway-engine/ 

1.4、停止应用

2、jetty9.3.15

2.1、发布应用

 

2.2、启动应用

如果启动了Tomcat，可以先关闭Tomcat：$TOMCAT_HOME/bin/shutdown.sh

nohup java -jar $JETTY_HOME/start.jar > /opt/jettyWebApps/ApiGw.log 2>&1 &

2.3、验证应用

http://10.110.20.191:9000/api-gateway-engine/ 

2.4、停止应用 

ps aux | grep java

kill -s 9 xxxx

3、tomcat8.0

3.1、发布应用

3.2、验证应用

四、问题处理

1、cant resolve localhost address

Aug 14, 2017 4:33:31 PM redis.clients.jedis.HostAndPort getLocalHostQuietly
SEVERE: cant resolve localhost address
java.net.UnknownHostException: e0d0frxd: e0d0frxd: Name or service not known
at java.net.InetAddress.getLocalHost(InetAddress.java:1505)
at redis.clients.jedis.HostAndPort.getLocalHostQuietly(HostAndPort.java:105)
at redis.clients.jedis.HostAndPort.<clinit>(HostAndPort.java:12)
at redis.clients.jedis.JedisFactory.<init>(JedisFactory.java:37)
at redis.clients.jedis.JedisPool.<init>(JedisPool.java:185)
at redis.clients.jedis.JedisPool.<init>(JedisPool.java:162)
at redis.clients.jedis.JedisPool.<init>(JedisPool.java:109)
at com.inspur.cloud.apigw.engine.common.RedisConnectionPool.<init>(RedisConnectionPool.java:27)
at com.inspur.cloud.apigw.engine.common.RedisConnectionPool.<clinit>(RedisConnectionPool.java:18)
at com.inspur.cloud.apigw.engine.cache.UrlCache.initCache(UrlCache.java:53)
at com.inspur.cloud.apigw.engine.StartServer.initialize(StartServer.java:147)
at com.inspur.cloud.apigw.engine.StartServer.contextInitialized(StartServer.java:117)
at org.eclipse.jetty.server.handler.ContextHandler.callContextInitialized(ContextHandler.java:843)
at org.eclipse.jetty.servlet.ServletContextHandler.callContextInitialized(ServletContextHandler.java:533)
at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:816)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:345)
at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1404)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1366)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:778)
at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:262)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:520)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.deploy.bindings.StandardStarter.processBinding(StandardStarter.java:41)
at org.eclipse.jetty.deploy.AppLifeCycle.runBindings(AppLifeCycle.java:188)
at org.eclipse.jetty.deploy.DeploymentManager.requestAppGoal(DeploymentManager.java:499)
at org.eclipse.jetty.deploy.DeploymentManager.addApp(DeploymentManager.java:147)
at org.eclipse.jetty.deploy.providers.ScanningAppProvider.fileAdded(ScanningAppProvider.java:180)
at org.eclipse.jetty.deploy.providers.WebAppProvider.fileAdded(WebAppProvider.java:452)
at org.eclipse.jetty.deploy.providers.ScanningAppProvider$1.fileAdded(ScanningAppProvider.java:64)
at org.eclipse.jetty.util.Scanner.reportAddition(Scanner.java:610)
at org.eclipse.jetty.util.Scanner.reportDifferences(Scanner.java:529)
at org.eclipse.jetty.util.Scanner.scan(Scanner.java:392)
at org.eclipse.jetty.util.Scanner.doStart(Scanner.java:313)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.deploy.providers.ScanningAppProvider.doStart(ScanningAppProvider.java:150)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.deploy.DeploymentManager.startAppProvider(DeploymentManager.java:561)
at org.eclipse.jetty.deploy.DeploymentManager.doStart(DeploymentManager.java:236)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
at org.eclipse.jetty.server.Server.start(Server.java:422)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:113)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
at org.eclipse.jetty.server.Server.doStart(Server.java:389)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1516)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1441)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.jetty.start.Main.invokeMain(Main.java:214)
at org.eclipse.jetty.start.Main.start(Main.java:457)
at org.eclipse.jetty.start.Main.main(Main.java:75)
Caused by: java.net.UnknownHostException: e0d0frxd: Name or service not known
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
at java.net.InetAddress.getLocalHost(InetAddress.java:1500)
... 54 more

解决办法：