k8s集群安装Istio过程记录及问题总结
目录
- 一、介绍
- 二、部署Helm
- 三、部署Istio
-
- 部署官方示例 Bookinfo
- 四、部署Kali
- Bug 记录
- 部署Bookinfo demo失败
一、介绍
这篇文章记录一下k8s集群安装Helm、Istio 和 Kiali，方便学习相关概念。
前提需要k8s集群：
可参考：Arm64架构(MacBookPro M1)虚拟机安装k8s1.27.3版本记录及问题总结
Helm是k8s机群的包管理器，我们可以通过Helm在k8s集群安装应用。
Istio是一个功能强大的服务网格平台，为微服务架构提供了一套丰富的工具和功能，以简化和增强服务之间的通信、安全性和可观察性。
Kiali 仪表板展示了网格的概览以及 Bookinfo 示例应用的各个服务之间的关系。 它还提供过滤器来可视化流量的流动。
Helm版本支持策略：https://helm.sh/zh/docs/topics/version_skew/
Istio 版本支持策略：https://istio.io/latest/zh/docs/releases/supported-releases/
二、部署Helm
官方文档：https://helm.sh/zh/docs/intro/quickstart/
Helm安装方式很简单，只需要执行一条命令，执行相应脚本完成安装。如果你需要安装对应版本，每个Helm 版本都提供了各种操作系统的二进制版本：https://github.com/helm/helm/releases，这些版本可以手动下载和安装，然后解压，将helm移动到需要的目录中(mv linux-amd64/helm /usr/local/bin/helm)
curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash
[root@k8s-master ~]# curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 11345 100 11345 0 0 8068 0 0:00:01 0:00:01 --:--:-- 8063
[WARNING] Could not find git. It is required for plugin installation.
Downloading https://get.helm.sh/helm-v3.12.1-linux-arm64.tar.gz
Verifying checksum... Done.
Preparing to install helm into /usr/local/bin
helm installed into /usr/local/bin/helm
[root@k8s-master ~]# helm version
version.BuildInfo{Version:"v3.12.1", GitCommit:"f32a527a060157990e2aa86bf45010dfb3cc8b8d", GitTreeState:"clean", GoVersion:"go1.20.4"}
[root@k8s-master ~]# helm ls
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
[root@k8s-master ~]# helm repo add bitnami https://charts.bitnami.com/bitnami
"bitnami" has been added to your repositories
[root@k8s-master ~]#
[root@k8s-master ~]# helm repo update
Hang tight while we grab the latest from your chart repositories...
...Successfully got an update from the "bitnami" chart repository
Update Complete. ⎈Happy Helming!⎈
三、部署Istio
官方文档：https://istio.io/latest/zh/docs/setup/getting-started/
Istio也可以执行脚本安装，但是我的网络不通没办法。
[root@k8s-master ~]# curl -L https://istio.io/downloadIstio | ISTIO_VERSION=1.18.0
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 102 100 102 0 0 359 0 --:--:-- --:--:-- --:--:-- 359
0 0 0 0 0 0 0 0 --:--:-- 0:01:36 --:--:-- 0
curl: (56) OpenSSL SSL_read: SSL_ERROR_SYSCALL, errno 104
[root@k8s-master ~]# cat >> /etc/hosts << EOF
> 75.2.60.5 istio.io
> EOF
> [root@k8s-master ~]# curl -L https://istio.io/downloadIstio | ISTIO_VERSION=1.18.0
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 102 100 102 0 0 337 0 --:--:-- --:--:-- --:--:-- 337
0 0 0 0 0 0 0 0 --:--:-- 0:01:32 --:--:-- 0
curl: (56) OpenSSL SSL_read: SSL_ERROR_SYSCALL, errno 104
只能下载二进制包，上传到虚拟机进行部署。
二进制包下载：https://github.com/istio/istio/releases/tag/1.18.0
下载对应版本
使用tar -zxvf命令进行解压，进入文件夹，将istio命令加入环境变量。
采用 demo 配置组合。 它包含了一组专为测试准备的功能集合，另外还有用于生产或性能测试的配置组合。
cd istio-1.18.0
export PATH=$PWD/bin:$PATH
istioctl install --set profile=demo -y
并且给命名空间添加标签，指示 Istio 在部署应用的时候，自动注入 Envoy 边车（Sidecar）代理：
kubectl label namespace default istio-injection=enabled
部署官方示例 Bookinfo
然后安装官方的Demo示例：
kubectl apply -f samples/bookinfo/platform/kube/bookinfo.yaml
[root@k8s-master ~]# ll | grep istio
-rw-r--r--. 1 root root 25307383 7月 5 23:16 istio-1.18.0-linux-arm64.tar.gz
[root@k8s-master ~]# tar -zxvf istio-1.18.0-linux-arm64.tar.gz
[root@k8s-master ~]# ll | grep istio
drwxr-x---. 6 root root 115 6月 7 16:01 istio-1.18.0
-rw-r--r--. 1 root root 25307383 7月 5 23:16 istio-1.18.0-linux-arm64.tar.gz
[root@k8s-master ~]# cd istio-1.18.0
[root@k8s-master istio-1.18.0]# ls
bin LICENSE manifests manifest.yaml README.md samples tools
[root@k8s-master istio-1.18.0]# export PATH=$PWD/bin:$PATH
[root@k8s-master istio-1.18.0]# istioctl install --set profile=demo -y
✔ Istio core installed
✔ Istiod installed
✔ Egress gateways installed
✔ Ingress gateways installed
✔ Installation complete Making this installation the default for injection and validation.
[root@k8s-master istio-1.18.0]# kubectl label namespace default istio-injection=enabled
namespace/default labeled
[root@k8s-master istio-1.18.0]# kubectl apply -f samples/bookinfo/platform/kube/bookinfo.yaml
service/details created
serviceaccount/bookinfo-details created
deployment.apps/details-v1 created
service/ratings created
serviceaccount/bookinfo-ratings created
deployment.apps/ratings-v1 created
service/reviews created
serviceaccount/bookinfo-reviews created
deployment.apps/reviews-v1 created
deployment.apps/reviews-v2 created
deployment.apps/reviews-v3 created
service/productpage created
serviceaccount/bookinfo-productpage created
deployment.apps/productpage-v1 created
[root@k8s-master istio-1.18.0]#
应用很快会启动起来。当每个 Pod 准备就绪时，Istio 边车将伴随应用一起部署。
[root@k8s-master istio-1.18.0]# kubectl get services
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
details ClusterIP 10.111.93.162 9080/TCP 12m
kubernetes ClusterIP 10.96.0.1 443/TCP 18h
productpage ClusterIP 10.97.94.189 9080/TCP 12m
ratings ClusterIP 10.106.155.115 9080/TCP 12m
reviews ClusterIP 10.106.49.5 9080/TCP 12m
[root@k8s-master istio-1.18.0]# kubectl get pods
NAME READY STATUS RESTARTS AGE
details-v1-7c7dbcb4b5-jx866 2/2 Running 0 12m
productpage-v1-664d44d68d-v722l 2/2 Running 0 12m
ratings-v1-844796bf85-kktgq 2/2 Running 0 12m
reviews-v1-5cf854487-gn6xv 2/2 Running 0 12m
reviews-v2-955b74755-rp9b5 2/2 Running 0 12m
reviews-v3-797fc48bc9-wspwt 2/2 Running 0 12m
[root@k8s-master istio-1.18.0]#
确认上面的操作都正确之后，运行下面命令，通过检查返回的页面标题来验证应用是否已在集群中运行，并已提供网页服务：
[root@k8s-master istio-1.18.0]# kubectl exec "$(kubectl get pod -l app=ratings -o jsonpath='{.items[0].metadata.name}')" -c ratings -- curl -sS productpage:9080/productpage | grep -o ".* "
Simple Bookstore App<<span class="token operator">/</span>title>
<span class="token namespace">[root@k8s-master istio-1.18.0]</span><span class="token comment"># </span>
</code></pre>
<p>此时，BookInfo 应用已经部署，但还不能被外界访问。 要开放访问，需要创建 Istio 入站网关（Ingress Gateway）， 它会在网格边缘把一个路径映射到路由。</p>
<pre><code class="prism language-powershell"><span class="token namespace">[root@k8s-master istio-1.18.0]</span><span class="token comment"># kubectl apply -f samples/bookinfo/networking/bookinfo-gateway.yaml</span>
gateway<span class="token punctuation">.</span>networking<span class="token punctuation">.</span>istio<span class="token punctuation">.</span>io/bookinfo-gateway created
virtualservice<span class="token punctuation">.</span>networking<span class="token punctuation">.</span>istio<span class="token punctuation">.</span>io/bookinfo created
<span class="token comment"># 确保配置文件没有问题：</span>
<span class="token namespace">[root@k8s-master istio-1.18.0]</span><span class="token comment"># istioctl analyze</span>
✔ No validation issues found when analyzing namespace: default<span class="token punctuation">.</span>
<span class="token namespace">[root@k8s-master istio-1.18.0]</span><span class="token comment"># </span>
</code></pre>
<p>执行下面命令以判断您的 Kubernetes 集群环境是否支持外部负载均衡：</p>
<pre><code class="prism language-powershell"><span class="token namespace">[root@k8s-master ~]</span><span class="token comment"># kubectl get svc istio-ingressgateway -n istio-system</span>
NAME <span class="token function">TYPE</span> CLUSTER-IP EXTERNAL-IP PORT<span class="token punctuation">(</span>S<span class="token punctuation">)</span> AGE
istio-ingressgateway LoadBalancer 10<span class="token punctuation">.</span>103<span class="token punctuation">.</span>45<span class="token punctuation">.</span>216 <pending> 15021:31564/TCP<span class="token punctuation">,</span>80:30704/TCP<span class="token punctuation">,</span>443:30854/TCP<span class="token punctuation">,</span>31400:30301/TCP<span class="token punctuation">,</span>15443:30563/TCP 20h
<span class="token namespace">[root@k8s-master ~]</span><span class="token comment"># </span>
</code></pre>
<p>设置 <code>EXTERNAL-IP</code> 的值之后， 环境就有了一个外部的负载均衡器，可以将其用作入站网关。 但如果 EXTERNAL-IP 的值为 (或者一直是 <<code>pending</code>> 状态)， 则您的环境则没有提供可作为入站流量网关的外部负载均衡器。 在这个情况下，您还可以用服务（Service）的<code>NodePort</code>访问网关。<br> 如果你的环境中没有外部负载均衡器，那就选择一个<code>NodePort</code>来代替。<br> 设置入站 IP 地址和端口：</p>
<pre><code class="prism language-powershell">export INGRESS_PORT=$<span class="token punctuation">(</span>kubectl <span class="token operator">-</span>n istio-system get service istio-ingressgateway <span class="token operator">-</span>o jsonpath=<span class="token string">'{.spec.ports[?(@.name=="http2")].nodePort}'</span><span class="token punctuation">)</span>
export INGRESS_HOST=$<span class="token punctuation">(</span>kubectl get po <span class="token operator">-</span>l istio=ingressgateway <span class="token operator">-</span>n istio-system <span class="token operator">-</span>o jsonpath=<span class="token string">'{.items[0].status.hostIP}'</span><span class="token punctuation">)</span>
</code></pre>
<p>设置环境变量 GATEWAY_URL：</p>
<pre><code class="prism language-powershell">export GATEWAY_URL=<span class="token variable">$INGRESS_HOST</span>:<span class="token variable">$INGRESS_PORT</span>
<span class="token function">echo</span> <span class="token string">"<span class="token variable">$GATEWAY_URL</span>"</span>
<span class="token function">echo</span> <span class="token string">"http://<span class="token variable">$GATEWAY_URL</span>/productpage"</span>
</code></pre>
<p>把上面命令的输出地址复制粘贴到浏览器并访问，确认 Bookinfo 应用的产品页面是否可以打开。</p>
<pre><code class="prism language-powershell"><span class="token namespace">[root@k8s-master ~]</span><span class="token comment"># export INGRESS_PORT=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="http2")].nodePort}')</span>
<span class="token namespace">[root@k8s-master ~]</span><span class="token comment"># export INGRESS_HOST=$(kubectl get po -l istio=ingressgateway -n istio-system -o jsonpath='{.items[0].status.hostIP}')</span>
<span class="token namespace">[root@k8s-master ~]</span><span class="token comment"># export GATEWAY_URL=$INGRESS_HOST:$INGRESS_PORT</span>
<span class="token namespace">[root@k8s-master ~]</span><span class="token comment"># echo "$GATEWAY_URL"</span>
192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>153<span class="token punctuation">.</span>102:30704
<span class="token namespace">[root@k8s-master ~]</span><span class="token comment"># echo "http://$GATEWAY_URL/productpage"</span>
http:<span class="token operator">/</span><span class="token operator">/</span>192<span class="token punctuation">.</span>168<span class="token punctuation">.</span>153<span class="token punctuation">.</span>102:30704/productpage
</code></pre>
<p>成功在外部（宿主机）访问：<br> <a href="http://img.e-com-net.com/image/info8/748c61eaa5514ff8a1ae055e3bc45577.jpg" target="_blank"><img src="http://img.e-com-net.com/image/info8/748c61eaa5514ff8a1ae055e3bc45577.jpg" alt="k8s集群安装Istio过程记录及问题总结_第5张图片" width="650" height="369" style="border:1px solid black;"></a><br> <a href="http://img.e-com-net.com/image/info8/f852859ba9c242afb8ebe0dec88a84c1.jpg" target="_blank"><img src="http://img.e-com-net.com/image/info8/f852859ba9c242afb8ebe0dec88a84c1.jpg" alt="k8s集群安装Istio过程记录及问题总结_第6张图片" width="650" height="369" style="border:1px solid black;"></a></p>
<h1>四、部署Kali</h1>
<p>Istio 和几个遥测应用做了集成。 遥测能帮我们了解服务网格的结构、展示网络的拓扑结构、分析网格的健康状态。<br> 使用下面说明部署 Kiali 仪表板、 以及 Prometheus、 Grafana、 还有 Jaeger。</p>
<pre><code class="prism language-powershell">kubectl apply <span class="token operator">-</span>f samples/addons
<span class="token comment"># 查询kiali在滚动更新期间的状态</span>
kubectl rollout status deployment/kiali <span class="token operator">-</span>n istio-system
</code></pre>
<p>要想外部访问kiali 的web页面，还需要创建一个<code>NodePort</code> Service。</p>
<pre><code class="prism language-powershell">kubectl <span class="token operator">-</span>n istio-system expose service kiali <span class="token operator">--</span><span class="token function">type</span>=NodePort <span class="token operator">--</span>name=kiali-external
kubectl get svc <span class="token operator">-</span>n istio-system
kubectl <span class="token operator">-</span>n istio-system get service kiali-external <span class="token operator">-</span>o=jsonpath=<span class="token string">'{.spec.ports[0].nodePort}'</span>
</code></pre>
<pre><code class="prism language-powershell"><span class="token namespace">[root@k8s-master ~]</span><span class="token comment"># cd istio-1.18.0</span>
<span class="token namespace">[root@k8s-master istio-1.18.0]</span><span class="token comment"># kubectl apply -f samples/addons</span>
serviceaccount/grafana created
configmap/grafana created
service/grafana created
deployment<span class="token punctuation">.</span>apps/grafana created
configmap/istio-grafana-dashboards created
configmap/istio-services-grafana-dashboards created
deployment<span class="token punctuation">.</span>apps/jaeger created
service/tracing created
service/zipkin created
service/jaeger-collector created
serviceaccount/kiali created
configmap/kiali created
clusterrole<span class="token punctuation">.</span>rbac<span class="token punctuation">.</span>authorization<span class="token punctuation">.</span>k8s<span class="token punctuation">.</span>io/kiali-viewer created
clusterrole<span class="token punctuation">.</span>rbac<span class="token punctuation">.</span>authorization<span class="token punctuation">.</span>k8s<span class="token punctuation">.</span>io/kiali created
clusterrolebinding<span class="token punctuation">.</span>rbac<span class="token punctuation">.</span>authorization<span class="token punctuation">.</span>k8s<span class="token punctuation">.</span>io/kiali created
role<span class="token punctuation">.</span>rbac<span class="token punctuation">.</span>authorization<span class="token punctuation">.</span>k8s<span class="token punctuation">.</span>io/kiali-controlplane created
rolebinding<span class="token punctuation">.</span>rbac<span class="token punctuation">.</span>authorization<span class="token punctuation">.</span>k8s<span class="token punctuation">.</span>io/kiali-controlplane created
service/kiali created
deployment<span class="token punctuation">.</span>apps/kiali created
serviceaccount/loki created
configmap/loki created
configmap/loki-runtime created
service/loki-memberlist created
service/loki-headless created
service/loki created
statefulset<span class="token punctuation">.</span>apps/loki created
serviceaccount/prometheus created
configmap/prometheus created
clusterrole<span class="token punctuation">.</span>rbac<span class="token punctuation">.</span>authorization<span class="token punctuation">.</span>k8s<span class="token punctuation">.</span>io/prometheus created
clusterrolebinding<span class="token punctuation">.</span>rbac<span class="token punctuation">.</span>authorization<span class="token punctuation">.</span>k8s<span class="token punctuation">.</span>io/prometheus created
service/prometheus created
deployment<span class="token punctuation">.</span>apps/prometheus created
<span class="token namespace">[root@k8s-master istio-1.18.0]</span><span class="token comment"># kubectl rollout status deployment/kiali -n istio-system</span>
deployment <span class="token string">"kiali"</span> successfully rolled out
<span class="token namespace">[root@k8s-master istio-kiali]</span><span class="token comment"># kubectl -n istio-system expose service kiali --type=NodePort --name=kiali-external</span>
service/kiali-external exposed
<span class="token namespace">[root@k8s-master istio-kiali]</span><span class="token comment"># kubectl get svc -n istio-system</span>
NAME <span class="token function">TYPE</span> CLUSTER-IP EXTERNAL-IP PORT<span class="token punctuation">(</span>S<span class="token punctuation">)</span> AGE
istio-egressgateway ClusterIP 10<span class="token punctuation">.</span>111<span class="token punctuation">.</span>39<span class="token punctuation">.</span>235 <none> 80/TCP<span class="token punctuation">,</span>443/TCP 21h
istio-ingressgateway LoadBalancer 10<span class="token punctuation">.</span>103<span class="token punctuation">.</span>45<span class="token punctuation">.</span>216 <pending> 15021:31564/TCP<span class="token punctuation">,</span>80:30704/TCP<span class="token punctuation">,</span>443:30854/TCP<span class="token punctuation">,</span>31400:30301/TCP<span class="token punctuation">,</span>15443:30563/TCP 21h
istiod ClusterIP 10<span class="token punctuation">.</span>109<span class="token punctuation">.</span>218<span class="token punctuation">.</span>54 <none> 15010/TCP<span class="token punctuation">,</span>15012/TCP<span class="token punctuation">,</span>443/TCP<span class="token punctuation">,</span>15014/TCP 21h
kiali ClusterIP 10<span class="token punctuation">.</span>105<span class="token punctuation">.</span>43<span class="token punctuation">.</span>99 <none> 20001/TCP<span class="token punctuation">,</span>9090/TCP 21h
kiali-external NodePort 10<span class="token punctuation">.</span>110<span class="token punctuation">.</span>49<span class="token punctuation">.</span>251 <none> 20001:31430/TCP<span class="token punctuation">,</span>9090:30588/TCP 9s
<span class="token namespace">[root@k8s-master istio-kiali]</span><span class="token comment"># kubectl -n istio-system get service kiali-external -o=jsonpath='{.spec.ports[0].nodePort}'</span>
31430<span class="token namespace">[root@k8s-master istio-kiali]</span><span class="token comment">#</span>
</code></pre>
<p>通过集群IP地址+NodePort 访问：<code>http://192.168.153.102:31430/</code></p>
<p>要查看追踪数据，必须向服务发送请求。请求的数量取决于 Istio 的采样率。 采样率在安装 Istio 时设置，默认采样速率为 1%。在第一个跟踪可见之前，您需要发送至少 100 个请求。 使用以下命令向 productpage 服务发送 100 个请求：</p>
<pre><code class="prism language-powershell"><span class="token keyword">for</span> i in `seq 1 100`<span class="token punctuation">;</span> <span class="token keyword">do</span> curl <span class="token operator">-</span>s <span class="token operator">-</span>o <span class="token operator">/</span>dev/null http:<span class="token operator">/</span><span class="token operator">/</span><span class="token variable">$GATEWAY_URL</span><span class="token operator">/</span>productpage<span class="token punctuation">;</span> done
</code></pre>
<p>Kiali 仪表板展示了网格的概览以及 Bookinfo 示例应用的各个服务之间的关系。 它还提供过滤器来可视化流量的流动。<br> <a href="http://img.e-com-net.com/image/info8/0df87b68b4b44841a425a6243fafa11b.jpg" target="_blank"><img src="http://img.e-com-net.com/image/info8/0df87b68b4b44841a425a6243fafa11b.jpg" alt="k8s集群安装Istio过程记录及问题总结_第7张图片" width="650" height="406" style="border:1px solid black;"></a><br> <a href="http://img.e-com-net.com/image/info8/7a39102d0b944d559005320547d8d800.jpg" target="_blank"><img src="http://img.e-com-net.com/image/info8/7a39102d0b944d559005320547d8d800.jpg" alt="k8s集群安装Istio过程记录及问题总结_第8张图片" width="650" height="406" style="border:1px solid black;"></a><br> <a href="http://img.e-com-net.com/image/info8/7b734e2542ac4263970efccb3ce2462a.jpg" target="_blank"><img src="http://img.e-com-net.com/image/info8/7b734e2542ac4263970efccb3ce2462a.jpg" alt="k8s集群安装Istio过程记录及问题总结_第9张图片" width="650" height="406" style="border:1px solid black;"></a></p>
<h1>Bug 记录</h1>
<h1>部署Bookinfo demo失败</h1>
<p>当我使用<code>kubectl apply -f samples/bookinfo/platform/kube/bookinfo.yaml</code>命令部署Demo时，发现Pod一直启动不下来。</p>
<pre><code class="prism language-powershell"><span class="token namespace">[root@k8s-master istio-1.18.0]</span><span class="token comment"># kubectl get pods -o wide</span>
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
details-v1-7c7dbcb4b5-lw8hr 0/2 Init:CrashLoopBackOff 5 <span class="token punctuation">(</span>82s ago<span class="token punctuation">)</span> 4m13s 172<span class="token punctuation">.</span>16<span class="token punctuation">.</span>85<span class="token punctuation">.</span>212 k8s-node01 <none> <none>
productpage-v1-664d44d68d-lgc4k 0/2 Init:CrashLoopBackOff 5 <span class="token punctuation">(</span>69s ago<span class="token punctuation">)</span> 4m12s 172<span class="token punctuation">.</span>16<span class="token punctuation">.</span>58<span class="token punctuation">.</span>203 k8s-node02 <none> <none>
ratings-v1-844796bf85-7s4zp 0/2 Init:CrashLoopBackOff 5 <span class="token punctuation">(</span>87s ago<span class="token punctuation">)</span> 4m13s 172<span class="token punctuation">.</span>16<span class="token punctuation">.</span>85<span class="token punctuation">.</span>213 k8s-node01 <none> <none>
reviews-v1-5cf854487-ztl9l 0/2 Init:CrashLoopBackOff 5 <span class="token punctuation">(</span>73s ago<span class="token punctuation">)</span> 4m13s 172<span class="token punctuation">.</span>16<span class="token punctuation">.</span>58<span class="token punctuation">.</span>202 k8s-node02 <none> <none>
reviews-v2-955b74755-tm6cj 0/2 Init:CrashLoopBackOff 5 <span class="token punctuation">(</span>74s ago<span class="token punctuation">)</span> 4m13s 172<span class="token punctuation">.</span>16<span class="token punctuation">.</span>85<span class="token punctuation">.</span>214 k8s-node01 <none> <none>
reviews-v3-797fc48bc9-s29zm 0/2 Init:CrashLoopBackOff 5 <span class="token punctuation">(</span>78s ago<span class="token punctuation">)</span> 4m13s 172<span class="token punctuation">.</span>16<span class="token punctuation">.</span>85<span class="token punctuation">.</span>215 k8s-node01 <none> <none>
</code></pre>
<p>开始以为是由于镜像下载不下来，单独下载了镜像</p>
<pre><code class="prism language-powershell">crictl pull docker<span class="token punctuation">.</span>io/istio/examples-bookinfo-details-v1:1<span class="token punctuation">.</span>17<span class="token punctuation">.</span>0
crictl pull docker<span class="token punctuation">.</span>io/istio/examples-bookinfo-productpage-v1:1<span class="token punctuation">.</span>17<span class="token punctuation">.</span>0
crictl pull docker<span class="token punctuation">.</span>io/istio/examples-bookinfo-ratings-v1:1<span class="token punctuation">.</span>17<span class="token punctuation">.</span>0
crictl pull docker<span class="token punctuation">.</span>io/istio/examples-bookinfo-reviews-v1:1<span class="token punctuation">.</span>17<span class="token punctuation">.</span>0
crictl pull docker<span class="token punctuation">.</span>io/istio/examples-bookinfo-reviews-v2:1<span class="token punctuation">.</span>17<span class="token punctuation">.</span>0
crictl pull docker<span class="token punctuation">.</span>io/istio/examples-bookinfo-reviews-v3:1<span class="token punctuation">.</span>17<span class="token punctuation">.</span>0
crictl pull docker<span class="token punctuation">.</span>io/istio/proxyv2:1<span class="token punctuation">.</span>18<span class="token punctuation">.</span>0
</code></pre>
<pre><code class="prism language-powershell"><span class="token namespace">[root@k8s-node02 istio-1.18.0]</span><span class="token comment"># crictl images</span>
IMAGE TAG IMAGE ID SIZE
docker<span class="token punctuation">.</span>io/calico/cni v3<span class="token punctuation">.</span>25<span class="token punctuation">.</span>0 0bb8d6f033a05 81<span class="token punctuation">.</span>1MB
docker<span class="token punctuation">.</span>io/calico/kube-controllers v3<span class="token punctuation">.</span>25<span class="token punctuation">.</span>0 2a83e28de3677 27<span class="token punctuation">.</span>1MB
docker<span class="token punctuation">.</span>io/calico/node v3<span class="token punctuation">.</span>25<span class="token punctuation">.</span>0 8a2dff14388de 82<span class="token punctuation">.</span>2MB
docker<span class="token punctuation">.</span>io/istio/examples-bookinfo-details-v1 1<span class="token punctuation">.</span>17<span class="token punctuation">.</span>0 8c7b34204cae9 59<span class="token punctuation">.</span>8MB
docker<span class="token punctuation">.</span>io/istio/examples-bookinfo-productpage-v1 1<span class="token punctuation">.</span>17<span class="token punctuation">.</span>0 348980125f0b0 64<span class="token punctuation">.</span>7MB
docker<span class="token punctuation">.</span>io/istio/examples-bookinfo-ratings-v1 1<span class="token punctuation">.</span>17<span class="token punctuation">.</span>0 18290de2e4a28 54<span class="token punctuation">.</span>2MB
docker<span class="token punctuation">.</span>io/istio/examples-bookinfo-reviews-v1 1<span class="token punctuation">.</span>17<span class="token punctuation">.</span>0 9dc1566776c17 412MB
docker<span class="token punctuation">.</span>io/istio/examples-bookinfo-reviews-v2 1<span class="token punctuation">.</span>17<span class="token punctuation">.</span>0 5233615dc9972 412MB
docker<span class="token punctuation">.</span>io/istio/examples-bookinfo-reviews-v3 1<span class="token punctuation">.</span>17<span class="token punctuation">.</span>0 fbb7b7ceabf34 412MB
docker<span class="token punctuation">.</span>io/istio/proxyv2 1<span class="token punctuation">.</span>18<span class="token punctuation">.</span>0 c901fe029266e 90<span class="token punctuation">.</span>4MB
docker<span class="token punctuation">.</span>io/kubernetesui/dashboard v2<span class="token punctuation">.</span>3<span class="token punctuation">.</span>1 5bb89698273d8 65<span class="token punctuation">.</span>4MB
registry<span class="token punctuation">.</span>aliyuncs<span class="token punctuation">.</span>com/google_containers/pause 3<span class="token punctuation">.</span>8 4e42fb3c9d90e 268kB
registry<span class="token punctuation">.</span>cn-hangzhou<span class="token punctuation">.</span>aliyuncs<span class="token punctuation">.</span>com/google_containers/coredns v1<span class="token punctuation">.</span>10<span class="token punctuation">.</span>1 97e04611ad434 14<span class="token punctuation">.</span>6MB
registry<span class="token punctuation">.</span>cn-hangzhou<span class="token punctuation">.</span>aliyuncs<span class="token punctuation">.</span>com/google_containers/kube-proxy v1<span class="token punctuation">.</span>27<span class="token punctuation">.</span>3 fb73e92641fd5 21<span class="token punctuation">.</span>4MB
<span class="token namespace">[root@k8s-node02 istio-1.18.0]</span><span class="token comment"># </span>
</code></pre>
<p>在三个节点都把镜像下载下来了，但是容器还是无法启动。<br> 后来查看了Pod的日志，发现这个问题：<code>error output: xtables parameter problem: iptables-restore: unable to initialize table 'nat'</code></p>
<p>最后找到解决方案：</p>
<pre><code class="prism language-powershell"><span class="token function">cat</span> <<EOT >> <span class="token operator">/</span>etc/modules-load<span class="token punctuation">.</span>d/k8s<span class="token punctuation">.</span>conf
overlay
br_netfilter
nf_nat
xt_REDIRECT
xt_owner
iptable_nat
iptable_mangle
iptable_filter
EOT
</code></pre>
<pre><code class="prism language-powershell">modprobe br_netfilter <span class="token punctuation">;</span> modprobe nf_nat <span class="token punctuation">;</span> modprobe xt_REDIRECT <span class="token punctuation">;</span> modprobe xt_owner<span class="token punctuation">;</span> modprobe iptable_nat<span class="token punctuation">;</span> modprobe iptable_mangle<span class="token punctuation">;</span> modprobe iptable_filter
</code></pre>
<p>https://stackoverflow.com/questions/73473680/service-deployed-with-istio-doesnt-start-minikube-docker-mac-m1</p>
<p>https://github.com/istio/istio/issues/36762</p>
<p>容器运行成功：</p>
<pre><code class="prism language-powershell"><span class="token namespace">[root@k8s-master istio-1.18.0]</span><span class="token comment"># kubectl get pods -o wide</span>
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
details-v1-7c7dbcb4b5-jx866 2/2 Running 0 12m 172<span class="token punctuation">.</span>16<span class="token punctuation">.</span>85<span class="token punctuation">.</span>220 k8s-node01 <none> <none>
productpage-v1-664d44d68d-v722l 2/2 Running 0 12m 172<span class="token punctuation">.</span>16<span class="token punctuation">.</span>58<span class="token punctuation">.</span>207 k8s-node02 <none> <none>
ratings-v1-844796bf85-kktgq 2/2 Running 0 12m 172<span class="token punctuation">.</span>16<span class="token punctuation">.</span>85<span class="token punctuation">.</span>221 k8s-node01 <none> <none>
reviews-v1-5cf854487-gn6xv 2/2 Running 0 12m 172<span class="token punctuation">.</span>16<span class="token punctuation">.</span>58<span class="token punctuation">.</span>206 k8s-node02 <none> <none>
reviews-v2-955b74755-rp9b5 2/2 Running 0 12m 172<span class="token punctuation">.</span>16<span class="token punctuation">.</span>85<span class="token punctuation">.</span>222 k8s-node01 <none> <none>
reviews-v3-797fc48bc9-wspwt 2/2 Running 0 12m 172<span class="token punctuation">.</span>16<span class="token punctuation">.</span>85<span class="token punctuation">.</span>223 k8s-node01 <none> <none>
<span class="token namespace">[root@k8s-master istio-1.18.0]</span><span class="token comment"># </span>
</code></pre>
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<span class="text-muted">m0_54072730</span>
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<span class="text-muted">coco_1998_2</span>
<a class="tag" taget="_blank" href="/search/%23/1.htm">#</a><a class="tag" taget="_blank" href="/search/CUDA/1.htm">CUDA</a><a class="tag" taget="_blank" href="/search/%23/1.htm">#</a><a class="tag" taget="_blank" href="/search/Docker/1.htm">Docker</a><a class="tag" taget="_blank" href="/search/docker/1.htm">docker</a><a class="tag" taget="_blank" href="/search/%E5%AE%B9%E5%99%A8/1.htm">容器</a>
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<span class="text-muted">小华0000</span>
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<span class="text-muted">frandiy</span>
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<span class="text-muted">喝口茶吧</span>
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<span class="text-muted">atom goper</span>
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<span class="text-muted">番茄番茄君</span>
<a class="tag" taget="_blank" href="/search/vue.js/1.htm">vue.js</a><a class="tag" taget="_blank" href="/search/%E5%AD%A6%E4%B9%A0/1.htm">学习</a><a class="tag" taget="_blank" href="/search/%E5%89%8D%E7%AB%AF/1.htm">前端</a>
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<span class="text-muted">网络安全小宇哥</span>
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<span class="text-muted">Zhang_newbie</span>
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<span class="text-muted">a小胡哦</span>
<a class="tag" taget="_blank" href="/search/kubernetes/1.htm">kubernetes</a><a class="tag" taget="_blank" href="/search/%E5%AE%B9%E5%99%A8/1.htm">容器</a><a class="tag" taget="_blank" href="/search/%E4%BA%91%E5%8E%9F%E7%94%9F/1.htm">云原生</a>
<div>为什么需要Kubernetes？Kubernetes（简称K8s）是容器编排领域的王者，它能帮你：自动扩缩容：流量激增时自动扩展应用实例（HorizontalPodAutoscaler）自愈能力：崩溃的容器秒级重启，节点故障自动迁移（Self-Healing设计）服务发现：动态管理微服务通信（Service机制）存储编排：一键挂载云存储/本地磁盘（PersistentVolumes）跨环境部署：一</div>
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<li><a href="/article/1894977597553569792.htm"
title="2025/2/27 上午《尚硅谷》——spring中bean的作用域（代码演示实例）" target="_blank">2025/2/27 上午《尚硅谷》——spring中bean的作用域（代码演示实例）</a>
<span class="text-muted">ㅤwisdom</span>
<a class="tag" taget="_blank" href="/search/Spring%E5%AD%A6%E4%B9%A0%E7%AC%94%E8%AE%B0/1.htm">Spring学习笔记</a><a class="tag" taget="_blank" href="/search/java/1.htm">java</a>
<div>SpringBean的作用域（Scope）1.Singleton（单例）含义：在SpringIoC容器中，Bean的对象始终为单实例。创建时机：IoC容器初始化时创建。特点：所有请求该Bean的地方都会返回同一个实例。适用于无状态的Bean，例如工具类、配置类等。spring-scope.xml代码：定义Bean：使用标签定义一个Bean。id="student"：指定Bean的唯一标识符，用于在</div>
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<li><a href="/article/71.htm"
title="Linux的Initrd机制" target="_blank">Linux的Initrd机制</a>
<span class="text-muted">被触发</span>
<a class="tag" taget="_blank" href="/search/linux/1.htm">linux</a>
<div>Linux 的 initrd 技术是一个非常普遍使用的机制，linux2.6 内核的 initrd 的文件格式由原来的文件系统镜像文件转变成了 cpio 格式，变化不仅反映在文件格式上， linux 内核对这两种格式的 initrd 的处理有着截然的不同。本文首先介绍了什么是 initrd 技术，然后分别介绍了 Linux2.4 内核和 2.6 内核的 initrd 的处理流程。最后通过对 Lin</div>
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<li><a href="/article/198.htm"
title="maven本地仓库路径修改" target="_blank">maven本地仓库路径修改</a>
<span class="text-muted">bitcarter</span>
<a class="tag" taget="_blank" href="/search/maven/1.htm">maven</a>
<div>默认maven本地仓库路径：C:\Users\Administrator\.m2
修改maven本地仓库路径方法：
1.打开E:\maven\apache-maven-2.2.1\conf\settings.xml
2.找到
</div>
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<li><a href="/article/325.htm"
title="XSD和XML中的命名空间" target="_blank">XSD和XML中的命名空间</a>
<span class="text-muted">darrenzhu</span>
<a class="tag" taget="_blank" href="/search/xml/1.htm">xml</a><a class="tag" taget="_blank" href="/search/xsd/1.htm">xsd</a><a class="tag" taget="_blank" href="/search/schema/1.htm">schema</a><a class="tag" taget="_blank" href="/search/namespace/1.htm">namespace</a><a class="tag" taget="_blank" href="/search/%E5%91%BD%E5%90%8D%E7%A9%BA%E9%97%B4/1.htm">命名空间</a>
<div>http://www.360doc.com/content/12/0418/10/9437165_204585479.shtml
http://blog.csdn.net/wanghuan203/article/details/9203621
http://blog.csdn.net/wanghuan203/article/details/9204337
http://www.cn</div>
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<li><a href="/article/452.htm"
title="Java 求素数运算" target="_blank">Java 求素数运算</a>
<span class="text-muted">周凡杨</span>
<a class="tag" taget="_blank" href="/search/java/1.htm">java</a><a class="tag" taget="_blank" href="/search/%E7%AE%97%E6%B3%95/1.htm">算法</a><a class="tag" taget="_blank" href="/search/%E7%B4%A0%E6%95%B0/1.htm">素数</a>
<div>网络上对求素数之解数不胜数，我在此总结归纳一下，同时对一些编码，加以改进，效率有成倍热提高。
第一种：
原理: 6N(+-)1法 任何一个自然数，总可以表示成为如下的形式之一： 6N，6N+1，6N+2，6N+3，6N+4，6N+5 (N=0，1，2，…) </div>
</li>
<li><a href="/article/579.htm"
title="java 单例模式" target="_blank">java 单例模式</a>
<span class="text-muted">g21121</span>
<a class="tag" taget="_blank" href="/search/java/1.htm">java</a>
<div>想必单例模式大家都不会陌生，有如下两种方式来实现单例模式：
class Singleton {
private static Singleton instance=new Singleton();
private Singleton(){}
static Singleton getInstance() {
return instance;
}</div>
</li>
<li><a href="/article/706.htm"
title="Linux下Mysql源码安装" target="_blank">Linux下Mysql源码安装</a>
<span class="text-muted">510888780</span>
<a class="tag" taget="_blank" href="/search/mysql/1.htm">mysql</a>
<div>1.假设已经有mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz
(1)创建mysql的安装目录及数据库存放目录
解压缩下载的源码包，目录结构，特殊指定的目录除外：
</div>
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<li><a href="/article/833.htm"
title="32位和64位操作系统" target="_blank">32位和64位操作系统</a>
<span class="text-muted">墙头上一根草</span>
<a class="tag" taget="_blank" href="/search/32%E4%BD%8D%E5%92%8C64%E4%BD%8D%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F/1.htm">32位和64位操作系统</a>
<div>32位和64位操作系统是指：CPU一次处理数据的能力是32位还是64位。现在市场上的CPU一般都是64位的，但是这些CPU并不是真正意义上的64 位CPU，里面依然保留了大部分32位的技术，只是进行了部分64位的改进。32位和64位的区别还涉及了内存的寻址方面，32位系统的最大寻址空间是2 的32次方= 4294967296（bit）= 4（GB）左右，而64位系统的最大寻址空间的寻址空间则达到了</div>
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<li><a href="/article/960.htm"
title="我的spring学习笔记10-轻量级_Spring框架" target="_blank">我的spring学习笔记10-轻量级_Spring框架</a>
<span class="text-muted">aijuans</span>
<a class="tag" taget="_blank" href="/search/Spring+3/1.htm">Spring 3</a>
<div>一、问题提问：
→ 请简单介绍一下什么是轻量级？
轻量级（Leightweight）是相对于一些重量级的容器来说的，比如Spring的核心是一个轻量级的容器，Spring的核心包在文件容量上只有不到1M大小，使用Spring核心包所需要的资源也是很少的，您甚至可以在小型设备中使用Spring。
</div>
</li>
<li><a href="/article/1087.htm"
title="mongodb 环境搭建及简单CURD" target="_blank">mongodb 环境搭建及简单CURD</a>
<span class="text-muted">antlove</span>
<a class="tag" taget="_blank" href="/search/Web/1.htm">Web</a><a class="tag" taget="_blank" href="/search/Install/1.htm">Install</a><a class="tag" taget="_blank" href="/search/curd/1.htm">curd</a><a class="tag" taget="_blank" href="/search/NoSQL/1.htm">NoSQL</a><a class="tag" taget="_blank" href="/search/mongo/1.htm">mongo</a>
<div>一 搭建mongodb环境
1. 在mongo官网下载mongodb
2. 在本地创建目录 "D:\Program Files\mongodb-win32-i386-2.6.4\data\db"
3. 运行mongodb服务 [mongod.exe --dbpath "D:\Program Files\mongodb-win32-i386-2.6.4\data\</div>
</li>
<li><a href="/article/1214.htm"
title="数据字典和动态视图" target="_blank">数据字典和动态视图</a>
<span class="text-muted">百合不是茶</span>
<a class="tag" taget="_blank" href="/search/oracle/1.htm">oracle</a><a class="tag" taget="_blank" href="/search/%E6%95%B0%E6%8D%AE%E5%AD%97%E5%85%B8/1.htm">数据字典</a><a class="tag" taget="_blank" href="/search/%E5%8A%A8%E6%80%81%E8%A7%86%E5%9B%BE/1.htm">动态视图</a><a class="tag" taget="_blank" href="/search/%E7%B3%BB%E7%BB%9F%E5%92%8C%E5%AF%B9%E8%B1%A1%E6%9D%83%E9%99%90/1.htm">系统和对象权限</a>
<div>数据字典（data dictionary）是 Oracle 数据库的一个重要组成部分，这是一组用于记录数据库信息的只读（read-only）表。随着数据库的启动而启动,数据库关闭时数据字典也关闭 数据字典中包含
数据库中所有方案对象（schema object）的定义(包括表，视图，索引，簇，同义词，序列，过程，函数，包，触发器等等)
数据库为一</div>
</li>
<li><a href="/article/1341.htm"
title="多线程编程一般规则" target="_blank">多线程编程一般规则</a>
<span class="text-muted">bijian1013</span>
<a class="tag" taget="_blank" href="/search/java/1.htm">java</a><a class="tag" taget="_blank" href="/search/thread/1.htm">thread</a><a class="tag" taget="_blank" href="/search/%E5%A4%9A%E7%BA%BF%E7%A8%8B/1.htm">多线程</a><a class="tag" taget="_blank" href="/search/java%E5%A4%9A%E7%BA%BF%E7%A8%8B/1.htm">java多线程</a>
<div> 如果两个工两个以上的线程都修改一个对象，那么把执行修改的方法定义为被同步的，如果对象更新影响到只读方法，那么只读方法也要定义成同步的。
不要滥用同步。如果在一个对象内的不同的方法访问的不是同一个数据，就不要将方法设置为synchronized的。
</div>
</li>
<li><a href="/article/1468.htm"
title="将文件或目录拷贝到另一个Linux系统的命令scp" target="_blank">将文件或目录拷贝到另一个Linux系统的命令scp</a>
<span class="text-muted">bijian1013</span>
<a class="tag" taget="_blank" href="/search/linux/1.htm">linux</a><a class="tag" taget="_blank" href="/search/unix/1.htm">unix</a><a class="tag" taget="_blank" href="/search/scp/1.htm">scp</a>
<div>一.功能说明 scp就是security copy，用于将文件或者目录从一个Linux系统拷贝到另一个Linux系统下。scp传输数据用的是SSH协议，保证了数据传输的安全，其格式如下： scp 远程用户名@IP地址：文件的绝对路径</div>
</li>
<li><a href="/article/1595.htm"
title="【持久化框架MyBatis3五】MyBatis3一对多关联查询" target="_blank">【持久化框架MyBatis3五】MyBatis3一对多关联查询</a>
<span class="text-muted">bit1129</span>
<a class="tag" taget="_blank" href="/search/Mybatis3/1.htm">Mybatis3</a>
<div>以教员和课程为例介绍一对多关联关系，在这里认为一个教员可以叫多门课程，而一门课程只有1个教员教，这种关系在实际中不太常见，通过教员和课程是多对多的关系。
示例数据：
地址表：
CREATE TABLE ADDRESSES
(
ADDR_ID INT(11) NOT NULL AUTO_INCREMENT,
STREET VAR</div>
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<li><a href="/article/1722.htm"
title="cookie状态判断引发的查找问题" target="_blank">cookie状态判断引发的查找问题</a>
<span class="text-muted">bitcarter</span>
<a class="tag" taget="_blank" href="/search/form/1.htm">form</a><a class="tag" taget="_blank" href="/search/cgi/1.htm">cgi</a>
<div>先说一下我们的业务背景：
1.前台将图片和文本通过form表单提交到后台，图片我们都做了base64的编码，并且前台图片进行了压缩
2.form中action是一个cgi服务
3.后台cgi服务同时供PC，H5，APP
4.后台cgi中调用公共的cookie状态判断方法（公共的，大家都用，几年了没有问题）
问题：（折腾两天。。。。）
1.PC端cgi服务正常调用，cookie判断没</div>
</li>
<li><a href="/article/1849.htm"
title="通过Nginx,Tomcat访问日志(access log)记录请求耗时" target="_blank">通过Nginx,Tomcat访问日志(access log)记录请求耗时</a>
<span class="text-muted">ronin47</span>
<div>一、Nginx通过$upstream_response_time $request_time统计请求和后台服务响应时间
nginx.conf使用配置方式：
log_format main '$remote_addr - $remote_user [$time_local] "$request" ''$status $body_bytes_sent "$http_r</div>
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<li><a href="/article/1976.htm"
title="java-67- n个骰子的点数。 把n个骰子扔在地上，所有骰子朝上一面的点数之和为S。输入n，打印出S的所有可能的值出现的概率。" target="_blank">java-67- n个骰子的点数。 把n个骰子扔在地上，所有骰子朝上一面的点数之和为S。输入n，打印出S的所有可能的值出现的概率。</a>
<span class="text-muted">bylijinnan</span>
<a class="tag" taget="_blank" href="/search/java/1.htm">java</a>
<div>
public class ProbabilityOfDice {
/**
* Q67 n个骰子的点数
* 把n个骰子扔在地上，所有骰子朝上一面的点数之和为S。输入n，打印出S的所有可能的值出现的概率。
* 在以下求解过程中，我们把骰子看作是有序的。
* 例如当n=2时，我们认为（1，2）和（2，1）是两种不同的情况
*/
private stati</div>
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<li><a href="/article/2103.htm"
title="看别人的博客，觉得心情很好" target="_blank">看别人的博客，觉得心情很好</a>
<span class="text-muted">Cb123456</span>
<a class="tag" taget="_blank" href="/search/%E5%8D%9A%E5%AE%A2/1.htm">博客</a><a class="tag" taget="_blank" href="/search/%E5%BF%83%E6%83%85/1.htm">心情</a>
<div> 以为写博客，就是总结，就和日记一样吧，同时也在督促自己。今天看了好长时间博客:
职业规划:
http://www.iteye.com/blogs/subjects/zhiyeguihua
android学习:
1.http://byandby.i</div>
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<li><a href="/article/2230.htm"
title="[JWFD开源工作流]尝试用原生代码引擎实现循环反馈拓扑分析" target="_blank">[JWFD开源工作流]尝试用原生代码引擎实现循环反馈拓扑分析</a>
<span class="text-muted">comsci</span>
<a class="tag" taget="_blank" href="/search/%E5%B7%A5%E4%BD%9C%E6%B5%81/1.htm">工作流</a>
<div>
我们已经不满足于仅仅跳跃一次，通过对引擎的升级，今天我测试了一下循环反馈模式，大概跑了200圈，引擎报一个溢出错误
在一个流程图的结束节点中嵌入一段方程，每次引擎运行到这个节点的时候，通过实时编译器GM模块，计算这个方程，计算结果与预设值进行比较，符合条件则跳跃到开始节点，继续新一轮拓扑分析，直到遇到</div>
</li>
<li><a href="/article/2357.htm"
title="JS常用的事件及方法" target="_blank">JS常用的事件及方法</a>
<span class="text-muted">cwqcwqmax9</span>
<a class="tag" taget="_blank" href="/search/js/1.htm">js</a>
<div>事件 描述
onactivate 当对象设置为活动元素时触发。
onafterupdate 当成功更新数据源对象中的关联对象后在数据绑定对象上触发。
onbeforeactivate 对象要被设置为当前元素前立即触发。
onbeforecut 当选中区从文档中删除之前在源对象触发。
onbeforedeactivate 在 activeElement 从当前对象变为父文档其它对象之前立即</div>
</li>
<li><a href="/article/2484.htm"
title="正则表达式验证日期格式" target="_blank">正则表达式验证日期格式</a>
<span class="text-muted">dashuaifu</span>
<a class="tag" taget="_blank" href="/search/%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F/1.htm">正则表达式</a><a class="tag" taget="_blank" href="/search/IT%E5%85%B6%E5%AE%83/1.htm">IT其它</a><a class="tag" taget="_blank" href="/search/java%E5%85%B6%E5%AE%83/1.htm">java其它</a>
<div> 正则表达式验证日期格式
function isDate(d){
var v = d.match(/^(\d{4})-(\d{1,2})-(\d{1,2})$/i);
if(!v) {
this.focus();
return false;
}
}
<input value="2000-8-8" onblu</div>
</li>
<li><a href="/article/2611.htm"
title="Yii CModel.rules() 方法 、validate预定义完整列表、以及说说验证" target="_blank">Yii CModel.rules() 方法 、validate预定义完整列表、以及说说验证</a>
<span class="text-muted">dcj3sjt126com</span>
<a class="tag" taget="_blank" href="/search/yii/1.htm">yii</a>
<div>public array rules () {return} array 要调用 validate() 时应用的有效性规则。 返回属性的有效性规则。声明验证规则，应重写此方法。 每个规则是数组具有以下结构：array('attribute list', 'validator name', 'on'=>'scenario name', ...validation </div>
</li>
<li><a href="/article/2738.htm"
title="UITextAttributeTextColor = deprecated in iOS 7.0" target="_blank">UITextAttributeTextColor = deprecated in iOS 7.0</a>
<span class="text-muted">dcj3sjt126com</span>
<a class="tag" taget="_blank" href="/search/ios/1.htm">ios</a>
<div>In this lesson we used the key "UITextAttributeTextColor" to change the color of the UINavigationBar appearance to white. This prompts a warning "first deprecated in iOS 7.0."
Ins</div>
</li>
<li><a href="/article/2865.htm"
title="判断一个数是质数的几种方法" target="_blank">判断一个数是质数的几种方法</a>
<span class="text-muted">EmmaZhao</span>
<a class="tag" taget="_blank" href="/search/Math/1.htm">Math</a><a class="tag" taget="_blank" href="/search/python/1.htm">python</a>
<div>质数也叫素数，是只能被1和它本身整除的正整数，最小的质数是2，目前发现的最大的质数是p=2^57885161-1【注1】。
判断一个数是质数的最简单的方法如下：
def isPrime1(n):
for i in range(2, n):
if n % i == 0:
return False
return True
但是在上面的方法中有一些冗余的计算，所以</div>
</li>
<li><a href="/article/2992.htm"
title="SpringSecurity工作原理小解读" target="_blank">SpringSecurity工作原理小解读</a>
<span class="text-muted">坏我一锅粥</span>
<a class="tag" taget="_blank" href="/search/SpringSecurity/1.htm">SpringSecurity</a>
<div>
SecurityContextPersistenceFilter
ConcurrentSessionFilter
WebAsyncManagerIntegrationFilter
HeaderWriterFilter
CsrfFilter
LogoutFilter
Use</div>
</li>
<li><a href="/article/3119.htm"
title="JS实现自适应宽度的Tag切换" target="_blank">JS实现自适应宽度的Tag切换</a>
<span class="text-muted">ini</span>
<a class="tag" taget="_blank" href="/search/JavaScript/1.htm">JavaScript</a><a class="tag" taget="_blank" href="/search/html/1.htm">html</a><a class="tag" taget="_blank" href="/search/Web/1.htm">Web</a><a class="tag" taget="_blank" href="/search/css/1.htm">css</a><a class="tag" taget="_blank" href="/search/html5/1.htm">html5</a>
<div>效果体验：http://hovertree.com/texiao/js/3.htm
该效果使用纯JavaScript代码，实现TAB页切换效果，TAB标签根据内容自适应宽度，点击TAB标签切换内容页。
HTML文件代码：
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"</div>
</li>
<li><a href="/article/3246.htm"
title="Hbase Rest API : 数据查询" target="_blank">Hbase Rest API : 数据查询</a>
<span class="text-muted">kane_xie</span>
<a class="tag" taget="_blank" href="/search/REST/1.htm">REST</a><a class="tag" taget="_blank" href="/search/hbase/1.htm">hbase</a>
<div>hbase（hadoop）是用java编写的，有些语言（例如python）能够对它提供良好的支持，但也有很多语言使用起来并不是那么方便，比如c#只能通过thrift访问。Rest就能很好的解决这个问题。Hbase的org.apache.hadoop.hbase.rest包提供了rest接口，它内嵌了jetty作为servlet容器。
启动命令：./bin/hbase rest s</div>
</li>
<li><a href="/article/3373.htm"
title="JQuery实现鼠标拖动元素移动位置（源码+注释）" target="_blank">JQuery实现鼠标拖动元素移动位置（源码+注释）</a>
<span class="text-muted">明子健</span>
<a class="tag" taget="_blank" href="/search/jquery/1.htm">jquery</a><a class="tag" taget="_blank" href="/search/js/1.htm">js</a><a class="tag" taget="_blank" href="/search/%E6%BA%90%E7%A0%81/1.htm">源码</a><a class="tag" taget="_blank" href="/search/%E6%8B%96%E5%8A%A8/1.htm">拖动</a><a class="tag" taget="_blank" href="/search/%E9%BC%A0%E6%A0%87/1.htm">鼠标</a>
<div>欢迎讨论指正！
print.html代码：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv=Content-Type content="text/html;charset=utf-8">
<title>发票打印</title>
&l</div>
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<span class="text-muted">qifeifei</span>
<a class="tag" taget="_blank" href="/search/PostgreSQL/1.htm">PostgreSQL</a>
<div>下面这段sql本来目的是想更新条件下的数据，可是这段sql却更新了整个表的数据。sql如下：
UPDATE tops_visa.visa_order
SET op_audit_abort_pass_date = now()
FROM
tops_visa.visa_order as t1
INNER JOIN tops_visa.visa_visitor as t2
ON t1. </div>
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title="将redis,memcache结合使用的方案?" target="_blank">将redis,memcache结合使用的方案?</a>
<span class="text-muted">tcrct</span>
<a class="tag" taget="_blank" href="/search/redis/1.htm">redis</a><a class="tag" taget="_blank" href="/search/cache/1.htm">cache</a>
<div>公司架构上使用了阿里云的服务，由于阿里的kvstore收费相当高，打算自建，自建后就需要自己维护，所以就有了一个想法，针对kvstore(redis)及ocs(memcache)的特点，想自己开发一个cache层，将需要用到list，set，map等redis方法的继续使用redis来完成，将整条记录放在memcache下，即findbyid，save等时就memcache，其它就对应使用redi</div>
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<li><a href="/article/3754.htm"
title="开发中遇到的诡异的bug" target="_blank">开发中遇到的诡异的bug</a>
<span class="text-muted">wudixiaotie</span>
<a class="tag" taget="_blank" href="/search/bug/1.htm">bug</a>
<div>今天我们服务器组遇到个问题：
我们的服务是从Kafka里面取出数据，然后把offset存储到ssdb中，每个topic和partition都对应ssdb中不同的key，服务启动之后，每次kafka数据更新我们这边收到消息，然后存储之后就发现ssdb的值偶尔是-2,这就奇怪了，最开始我们是在代码中打印存储的日志，发现没什么问题，后来去查看ssdb的日志，才发现里面每次set的时候都会对同一个key</div>
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