首先要排序
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#find lines only in file1 comm -23 file1 file2 #find lines only in file2 comm -13 file1 file2 #find lines common to both files comm -12 file1 file2 |
Linux取两个文件相同不同的部分
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Java的byte数组和Integer互转
byte[] -> int
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int result = ByteBuffer.wrap(bytes).getInt(); |
int -> byte[]
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byte[] bytes = ByteBuffer.allocate(4).putInt(1695609641).array(); |
commons-pool2连接池配置
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GenericObjectPoolConfig poolConfig = new GenericObjectPoolConfig(); 基本配置： //最大连接 poolConfig.setMaxTotal(100); //最大空闲连接 poolConfig.setMaxIdle(5); //最小空闲连接 poolConfig.setMinIdle(5); //连接满时最多等待时间 poolConfig.setMaxWaitMillis(5000L); 高级功能： //使用时检查对象（默认不检查） poolConfig.setTestWhileIdle(true); poolConfig.setTestOnCreate(true); poolConfig.setTestOnBorrow(true); poolConfig.setTestOnReturn(true); //jmx启用 之后可以实时的查看线程池对象的状态 poolConfig.setJmxEnabled(false); poolConfig.setJmxNameBase("namebase"); poolConfig.setJmxNamePrefix("nameprefix"); //驱逐线程每次检查对象个数 poolConfig.setNumTestsPerEvictionRun(2); //空闲连接被驱逐前能够保留的时间 poolConfig.setMinEvictableIdleTimeMillis(10000L); //当空闲线程大于minIdle 空闲连接能够保留时间，同时指定会被上面的覆盖 poolConfig.setSoftMinEvictableIdleTimeMillis(10000L); //驱逐线程执行间隔时间 poolConfig.setTimeBetweenEvictionRunsMillis(200000L); //放弃长时间占用连接的对象 AbandonedConfig abandonedConfig=new AbandonedConfig(); abandonedConfig.setLogAbandoned(true); abandonedConfig.setUseUsageTracking(false); abandonedConfig.setRemoveAbandonedOnBorrow(true); abandonedConfig.setRemoveAbandonedOnMaintenance(true); abandonedConfig.setRemoveAbandonedTimeout(20);//second |
转载自：https://throwsnew.com/2017/06/12/commons-pool/
Kubernetes操作
１、Deployment和Pod
文件
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apiVersion: apps/v1 kind: Deployment metadata: name: lmsia-abc-server-deployment spec: selector: matchLabels: app: lmsia-abc-server replicas: 2 template: metadata: labels: app: lmsia-abc-server spec: containers: - name: lmsia-abc-server-ct image: coder4/lmsia-abc-server:latest ports: - containerPort: 8080 - containerPort: 3000 |
创建
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kubectl apply -f ./lmsia-abc-server-deployment.yaml |
查看关联的Pod
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kubectl get pods -l app=lmsia-abc-server |
删除
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kubectl delete deployment lmsia-abc-server-deployment |
强制重启Pod
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kubectl get pod PODNAME -n NAMESPACE -o yaml | kubectl replace --force -f - |
强制删除Deployment (如果之前设置了自动重启)[……]
Ubuntu下安装kubernetes
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sudo apt-get update && apt-get install -y apt-transport-https curl curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add - sudo cat <<EOF >/etc/apt/sources.list deb http://apt.kubernetes.io/ kubernetes-xenial main EOF sudo apt-get update sudo apt-get install -y kubelet kubeadm kubectl |
minicube需要单独下载
https://github.com/kubernetes/minikube/releases