history

问题描述： 今天同事说有个zabbix监控数据库历史数据越来越多了， 让我帮忙清一下，顺便熟悉练练手，做个笔记 zabbix监控运行一段时间以后，会留下大量的历史监控数据 zabbix数据库一直在增大可能会造成系统性能下降，查看历史数据室查询速度缓慢。 zabbix里面最大的表就是history和history_uint两个表，但是我这边查看到history_log表也是最大的。 而且zabbix里面的时间是使用的时间戳方式记录，所以可以根据时间戳来删除历史数据。 解决方法： 1、首先需要关闭zabbix和httpd服务： 我的系统是centos7系统，关闭服务是这种 [root@awza ~]# systemctl stop zabbix-server.service [root@awza ~]# systemctl stop httpd.service 2、查看数据库目录文件的大小 [root@awza zabbix]# pwd /database/mysql/zabbix [root@awza zabbix]# ll -h |grep G total 129G -rw-rw---- 1 mysql mysql 2.9G Nov 4 15:15 history.ibd -rw-rw---- 1 mysql mysql 121G Nov 4 15:15 history_log

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm using ' fancy box ' and I'm trying to change my url to be the url of the fancy box , so I try to use History.pushState() . but it makes error The error: Uncaught SecurityError: Failed to execute 'pushState' on 'History': A history state object with URL 'about:blank' cannot be created in a document with origin ' http://localhost:28587 ' My code: var _url = window.location.href; setInterval(function () { if (($(".fancybox-iframe").length > 0)) { if(window.location.href != $('.fancybox-iframe').contents().get(0).location.href) { history

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a large data set that has unique IDs for individuals as well as dates, and each individual is capable of multiple encounters. The below is code and an example of how this data might look: strDates <- c("09/09/16", "6/7/16", "5/6/16", "2/3/16", "2/1/16", "11/8/16", "6/8/16", "5/8/16","2/3/16","1/1/16") Date<-as.Date(strDates, "%m/%d/%y") ID <- c("A", "A", "A", "A","A","B","B","B","B","B") Event <- c(1,0,1,0,1,0,1,1,1,0) sample_df <- data.frame(Date,ID,Event) sample_df Date ID Event 1 2016-09-09 A 1 2 2016-06-07 A 0 3 2016-05-06 A 1 4

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am using S3 to host a javascript app that will use HTML5 pushStates. The problem is if the user bookmarks any of the URLs, it will not resolve to anything. What I need is the ability to take all url requests and serve up the root index.html in my S3 bucket, rather than just doing a full redirect. Then my javascript application could parse the URL and serve the proper page. Is there any way to tell S3 to serve the index.html for all URL requests instead of doing redirects? This would be similar to setting up apache to handle all incoming

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: XCode 5.0.1 on OSX 10.9 does not show the full revision history for my repository under Source Control/History . What it does display is the history up to a certain point several months ago, but nothing newer than that. I tried viewing the repo and its history in Versions and there it works just fine. At some point we migrated the repo from one server to another. We also upgraded the repository a while back, but I don't know to which version of SVN. However, I do know that we have Visual SVN Server and SVN 1.8.0 serverside. On the other hand

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am new to reactjs. My question may be very simple for react developers but i thought to get some help over this forum folks. I have two different pages, one is route configuration page and another is link page where i am trying to load another component that redirects to cart page that shows list of items in cart. So from by default module that is homepage(app.js) it has to redirect to cart page. I m using react router v1.0. Route configuration page:(app.js) React.render((<Router> <Route path="/" component={FluxShoppingCart}> <IndexRoute

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: The DefinitelyTyped library: declare module "history/lib/createBrowserHistory" { export default function createBrowserHistory(options?: HistoryModule.HistoryOptions): HistoryModule.History } gives the compile error in the title when used like this (although it worked in plain old .jsx before converting to .tsx): import React = require('react'); import reactDom = require('react-dom'); import ReactRouter = require('react-router'); import createBrowserHistory = require('history/lib/createBrowserHistory'); import routes = require('app/tools

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a QPlainTextEdit and I'm building a progress dialog for it when opening large files. Rather than using setText, I want to add one line of text at a time by using QTextCursor.insertText. The problem is that when I do it this way, I can undo each line that was added... is there a way to clear the undo history? 回答1: Use QTextDocument::clearUndoRedoStacks . Code: editor->document()->clearUndoRedoStacks(); // default clears both See docs if you want to clear just undo. Also, it's good idea to read docs of QTextDocument (and QTextCursor)

Closed . This question is opinion-based. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it can be answered with facts and citations by editing this post . Does anyone have an idea why the ampersand was chosen as the way to denote references in C++? AFAIK (though I don't have the book near me), Stroustroup didn't explain that choice, which I find a little odd because the same symbol was already used for address-of in C. Stroustrup was always very reluctant to introduce a new reserved symbol or name, so he probably used it to avoid