jobs | 易学教程

Jenkins: Throttle build rate

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问题 Using Jenkins , is it possible to limit job execution to run only once within a given interval? E.g. I need to configure an expensive job which should be executed no more than 2 times per hour . Note: I was not able to get this working using the quiet period feature, because its timer will be reset once another build trigger occurs within the quiet period interval. If such build trigger occur more often than the quiet period lasts, builds will never be made. 回答1: You can always just schedule

Laravel Jobs Serialization of 'Closure' is not allowed

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问题 I would like to send Data to a NewsletterStore Job. But it's failing with the following error. Any suggestions? I also tried to remove the SerializesModels Models trait. Without any success. Error Exception Serialization of 'Closure' is not allowed Controller public function store(StoreNewsletterRequest $request) { StoreNewsletterJob::dispatch($request); return view('backend.dashboard.index'); } Job protected $request; public function __construct($request) { $this->request = $request; } /** *

How can I use just created build in downstream job

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问题 I have 2 jobs in Jenkins: Build and run unit tests (Build and) run integration tests Job-2 is a Downstream project of Job-1 . Job-1 initiates build and run unit tests on it. Job-2 initiates build as well and run integration tests. I would like to change that, and make Job-2 to run the tests on the result build that was initiated by Job-1 . 回答1: You could use Copy Artifact Plugin and use Job-1 artifacts from Job-2 to run some tests on them. Refer to this post for more information. Hope it will

Why there is a mapreduce.jobtracker.address configuration on YARN?

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问题 YARN is the Hadoop second generation that not use the jobtracker daemon anymore, and substitute it with resource manager. But why, on mapred-site.xml hadoop 2 there is an mapreduce.jobtracker.address property? 回答1: You are correct. In YARN, jobtracker no longer exists. So as part of client configuration you don't have to to specify the property mapreduce.jobtracker.address . In YARN, you should specify the property mapreduce.framework.name to yarn in the config file. Instead of setting up

RAISE_ APPLICATION_ ERROR--之异常处理

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 平时用来测试的异常处理我们都是通过dbms_output.put_line来输出异常信息，但是在实际的应用中，需要把异常信息返回给调用的客户端。其实 RAISE_APPLICATION_ERROR 是将应用程序专有的错误从服务器端转达到客户端应用程序(其他机器上的SQLPLUS或者其他前台开发语言) raise_application_error(异常类型,传递信息) 异常类型：number 值域：-20000 到-20999 传递信息：varchar2（2000） DBMS_STANDARD包的RAISE_APPLICATION_ERROR过程，可以重新定义异常错误消息，它为应用程序提供了一种与ORACLE交互的方法。语法如下 RAISE_APPLICATION_ERROR(errorNumber,errorString) errorNumber是数值在-20000到-20999之间，errorString为自定义的错误信息。如： update jobs set job_title = v_newJobTitle where job_id = v_jobid; if sql%notfound then RAISE_APPLICATION_ERROR(-20167,'update failure!');

Serverless Kubernetes 入门：对 Kubernetes 做减法

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 背景 Kubernetes 作为通用的容器编排系统，承载了广泛的应用和场景，包括 CI／CD，数据计算，在线应用，AI 等，然而由于其通用性和复杂性，管理一个 Kubernetes 集群对于很多用户而言还是充满挑战的，主要体现在：学习成本高；集群运维管理成本高，包括节点管理、容量规划，以及各种节点异常问题的定位；计算成本在很多场景中没有达到最优，比如对于一个定时运行 Jobs 的集群，长期持有资源池对于用户来说是浪费的行为，资源利用率不高。对 Kubernetes 集群做减法无节点管理我们相信未来用户会更加关注应用的开发，而不是基础设施的维护。体现在 Kubernetes 集群中，我们希望用户能够关注在 pod/service/ingress/job 等应用编排语义上，对底层 node 则可以减少关注。无需管理节点也可以显著降低集群的运维管理成本，经统计 Kubernetes 常见的异常问题中大多数与节点相关，比如 Node NotReady 问题，也无需担忧 Node 的安全问题，以及基础系统软件的升级和维护。在 ASK 集群中，我们使用虚拟节点 virtual-kubelet 代替 ecs 节点，虚拟节点的容量可以认为是“无限大”，用户不需要为集群的容量担忧，无需预先做容量规划。无

Elasticse启动报错-java.lang.IllegalStateException: failure when sending a validation request to node

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 报错问题描述： [2019-09-04T17:51:32,265][INFO ][o.e.c.c.JoinHelper ] [node18701] failed to join {node9701}{rh-c4DTFSsCr3fPYYAhGdQ}{UZxODZrbRey6NRl2gDBwiw}{192.168.1.97}{192.168.1.97:9301}{dim}{ml.machine_memory=8072921088, ml.max_open_jobs=20, xpack.installed=true} with JoinRequest{sourceNode={node18701}{Pj07gNlcRI6PVPZHBLYpkA}{14QtIqnJTVGXV7IyUbtyeA}{192.168.1.187}{192.168.1.187:9301}{di}{ml.machine_memory=8072921088, xpack.installed=true, ml.max_open_jobs=20}, optionalJoin=Optional[Join{term=6, lastAcceptedTerm=1, lastAcceptedVersion=1, sourceNode={node18701}

认识与使用systemctl命令

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 一、systemctl介绍通常，Linux 的启动一直采用init进程。我们经常看到 $ sudo /etc/init.d/apache2 start 或者 $ service apache2 start 这种方法有两个缺点：一是启动时间长。init进程是串行启动，只有前一个进程启动完，才会启动下一个进程。二是启动脚本复杂。init进程只是执行启动脚本，不管其他事情。脚本需要自己处理各种情况，这往往使得脚本变得很长。为此，LINXU设计引入了Systemd 它的设计目标是，为系统的启动和管理提供一套完整的解决方案。根据 Linux 惯例，字母d是守护进程（daemon）的缩写。Systemd 这个名字的含义，就是它要守护整个系统。使用了 Systemd，就不需要再用init了。Systemd 取代了initd，成为系统的第一个进程（PID 等于 1），其他进程都是它的子进程。通过上图的命令，我们可以查看Systemd版本。总的来说，Systemd 的优点是功能强大，使用方便，缺点是体系庞大，非常复杂。事实上，现在还有很多人反对使用 Systemd，理由就是它过于复杂，与操作系统的其他部分强耦合，违反”keep simple, keep stupid”的Unix 哲学。

in cshell: How to I set a variable to the command line output?

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问题 I do want to start a batch job that generates a jobid as output. How can I save the jobid as environmental variable and reuse it in the cshell script? Thanks and best wishes, Rollz 回答1: Use backticks to substitute the output of a command into the command line. To set an ordinary variable: set varname = `start_batch_job` To set an environment variable: setenv varname `start_batch_job` You should generally avoid scripting in C-shell, it has lots of problems that make it poor as a scripting

How to skip a particular job execution in Spring Quartz Scheduler

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问题 I have a CronExpression set for the job to be executed at every 30 minutes. But I need to skip a particular job if the earlier job is not complete. For eg. I have 100 Employee whose Names to be updated in the database and I terms it as "Job1" which starts at 10AM. Now the case is like "Job1" is in process and by the time I have another job- "Job2" aligned where I need to update another 50 Employee's names. My problem is this,I need to skip "Job2" and further jobs till my currently running Job

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