-7f68566795-8pl29 1/1 Running 3 2d tomcathost-7f68566795-mvg5f 1/1 Running...scale deployment tomcathost --replicas=5 deployment "tomcathost" scaled root@master:~# kubectl get pods...3 2d tomcathost-7f68566795-mvg5f 1/1 Running 3 2d tomcathost-7f68566795...# kubectl set image deployment/tomcathost tomcathost=bolingcavalry/k8stomcatdemo:0.0.3 deployment "tomcathost...18s tomcathost-6dfc87dc8b-pfb56 1/1 Running 0 10s tomcathost-6dfc87dc8b-x8pnn
我们一起来梳理一下吧： 按照原本的设计，此处的URL应该是http://tomcathost:8080/getserverinfo，tomcathost是Tomcat的Pod在kubernetes暴露的...service名称，在kubernetes环境中tomcathost会被解析成Tomcat的Pod地址，请求就到了Tomcat了； 但是，OpenResty的httpc:request_uri这个API...无法将tomcathost这个hostname解析成Tomcat的Pod地址，或者说不会用到kubernetes提供的DNS服务，因此请求无法到达Tomcat的Pod； 开涛大神的实例也用到了这个API...:8080; } 此upstream中的server用到了tomcathost，这是kubernetes中Tomcat的service的名字，能被成功的解析成Tomcat的Pod的IP； 2...service，名字是tomcathost，这样kubernetes环境中的其他Pod通过tomcathost这个hostname就能访问到Tomcat的Pod副本了； 3.
基本环境的配置，与第一章一致，Tomcat的deployment配置如下： apiVersion: extensions/v1beta1 kind: Deployment metadata: name: tomcathost...spec: replicas: 1 template: metadata: labels: name: tomcathost spec: containers...: - name: tomcathost image: bolingcavalry/k8stomcatdemo:0.0.5 tty: true ports...create -f tomcat.yaml,tomcat-svc.yaml 横向扩容，将Pod数从1增加到8 将Pod数从1增加到8，执行以下命令即可： kubectl scale deployment tomcathost
JIT在理论上对结果有影响； 如何停止和删除原有的deployment和service 执行以下命令即可先删除service，再删除deployment： kubectl delete service tomcathost...&& kubectl delete deployment tomcathost 内存资源从256M提升到512M 打开上一章我们搭建web服务时创建的tomcat.yaml文件，内容如下： apiVersion...: extensions/v1beta1 kind: Deployment metadata: name: tomcathost spec: replicas: 1 template:...metadata: labels: name: tomcathost spec: containers: - name: tomcathost
/start_all.sh deployment "tomcathost" created service "tomcathost" created deployment "ng" created service..."ng" created nginx and tomcat running now 验证服务已经启动 先去kubernetes的管理页面看一下服务是否启动，如下图，名为ng、tomcathost的两个服务都已经启动...： 点击tomcathost服务，看到详情信息，里面有pod的情况，如下图： 上图中显示tomcathost是在node1创建的，我的node1机器的IP地址是192.168.119.153
80:30006/TCP 19h tomcat001 NodePort 10.43.141.37 8080:30991/TCP 51d tomcathost...1/1 Running 12 51d tomcat001-768557bfc9-lkl7b 1/1 Running 12 51d tomcathost...-59c9987c6f-8z7hz 1/1 Running 3 19h tomcathost-59c9987c6f-tlbp7 1/1 Running...3 19h tomcathost-59c9987c6f-w9kzz 1/1 Running 3 19h root@maven:~/.kube...1 1 19h tomcat001 2 2 2 2 51d tomcathost
spec: replicas: 1 template: metadata: labels: name: tomcathost spec: containers...: - name: tomcathost image: bolingcavalry/k8stomcatdemo:0.0.5 tty: true ports...在tomcat.yaml所在目录下创建文件tomcat-svc.yaml，内容如下： apiVersion: v1 kind: Service metadata: name: tomcathost...spec: type: NodePort ports: - port: 8080 nodePort: 30008 selector: name: tomcathost..." created service "tomcathost" created root@maven:/usr/local/work/ab# kubectl get services NAME
: - name: tomcathost image: bolingcavalry/k8stomcatdemo:0.0.1-SNAPSHOT tty: true...spec: type: ClusterIP ports: - port: 8080 selector: name: tomcathost 将上述脚本的几个关键点列举一下...： 服务对应的pod是tomcathost； type用ClusterIP，为内部service调用提供统一IP地址； 服务对外暴露了pod的8080端口； Nginx对应的Docker镜像 定制的Nginx...，这是tomcat的service名称，在Nginx运行的时候，通过tomcathost就能访问到tomcat的Pod； 制作Docker镜像的Dockerfile文件内容如下，每行都有注释就不再多说了...kubectl delete deployment tomcathost kubectl delete service ng kubectl delete deployment ng echo "nginx
always disconf_nginx: image: bolingcavalry/disconf_nginx:0.0.1 links: - disconf_tomcat:tomcathost
; #gzip on; #include /etc/nginx/conf.d/*.conf; upstream disconf { server tomcathost...disconf; } } } 主要的配置有三点： 将默认的/etc/nginx/conf.d/*.conf配置注释掉； 增加tomcat的host信息，“tomcathost...”和后面docker run的link参数的别名保持一致; 动静分离的配置，请求url中如果带有api和export，nginx就把请求转发到tomcathost:8080，其他的请求直接访问nginx...restart: always disconf_nginx: image: conf_nginx:0.0.1 links: - disconf_tomcat:tomcathost
conf.d/*.conf; # upstream disconf { # disconf服务的地址,为了通用这个nginx镜像,这里使用的别名的方式 # tomcathost...为disconf服务容器的名称,然后通过link的方式进行关联 server tomcathost:8080; } # server { listen
/bin/bash wget -qO- http://tomcathost:8080/zabbixcustomitemdemo/count?
然后,就可以通过如下地址访问web服务：http://:/resteasy/v1/fruits/apples。
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