Last year in the investigation of a lot of java applications, see some of the phenomenon is the programmer to run on their own environment to read the program rarely lead to troubleshooting problems will be more frustrating, so think of writing this series of articles, procedures To provide functionality to end-users, the code is only one part of it, and it needs to be relied on for jvm, os, server hardware, networking, load balancing, etc. In this series of articles, Several parts, more is only a science role, because os I use are linux, this series ...
Summer heat, CPU temperature rose, Desktop is OK, notebook on the trouble. It's unsettling. But I've found a solution. Not using the heatsink bracket, is http://www.aliyun.com/zixun/aggregation/7432.html from the source "> Solve the problem." Not only can the cooling also extend the battery time, and even prolong the life of the CPU. Meat test Results (early March): Before the cpu100% can reach more than 61 degrees,...
The original LXC technology was developed by IBM and has now entered the core of the Linux kernel, which means that LXC technology will be the most competitive lightweight virtual container technology at the moment, and this article will http://www.aliyun.com/zixun/aggregation/ 32779.html "> Step-by-Step introduction of how to build and manage Linux containers. The Linux distribution version used in this article is Ubuntu 12.04. LXC ...
In the http://www.unixbar.net/see the use of monitoring Treasure monitor server, feel good, on the installation of a configuration, the following describes the specific installation Method! Monitoring treasure using the standard SNMP protocol to provide users with server monitoring, which means that the monitored server must run the SNMP agent (SNMPD), then we will detail how to install, open the SNMP agent on the Linux server, and make the necessary security configuration, Nginx monitoring and server i/o,cpu load, ...
First, the phenomenon of Hadoop process CPU accounted for 800% second, check the question 1, top Z highlight H display thread <> page 2, jstatack sudo-u admin Jstack 97932 | Pager 2014-03-20 21:45:45 Full thread dump OpenJDK (Taobao) 64-bit Server VM ...
Companies such as IBM®, Google, VMWare and Amazon have started offering cloud computing products and strategies. This article explains how to build a MapReduce framework using Apache Hadoop to build a Hadoop cluster and how to create a sample MapReduce application that runs on Hadoop. Also discusses how to set time/disk-consuming ...
Linux is a clone of a Unix kernel, written by computer amateur Linus Torvalds, and is now a free and open source Unix-like operating system. The goal is to follow POSIX and a single UNIX specification, all of which are based on a modern, comprehensive Unix kernel that can be installed on a variety of computer http://www.aliyun.com/zixun/aggregation/11585.html "> hardware devices, including real multitasking ...
Today, open source firewalls are numerous. This article will cover 10 of the most practical open source firewalls that fit your business needs. 1. Iptables Iptables/netfilter is the most popular command line based on firewalls. It is the safe line of defense for Linux servers. Many system administrators use it to fine-tune the server. The function is to filter packets from the network stack in the kernel, including: listing the contents of the packet filtering rule set, and executing fast because it only checks the header of the packet, and the administrator can ...
This article is written by http://www.aliyun.com/zixun/aggregation/13357.html ">azure CAT team Piyush Ranjan (MSFT). As infrastructure services (virtual machines and virtual networks) are recently officially released on Windows Azure, more and more enterprise workloads are migrating to the public cloud to take advantage of cloud profitability, scale, and speed. I recently participated in one of the enterprise work negative ...
The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall Linux system in the domestic and foreign server and the VPS application is very ordinary, including recently more popular cloud host, like Aliyun, Sheng, million net cloud host and so on, the default is the Linux system, its characteristic is the relative Windows system more stable, Execution is more efficient, more appropriate to do cluster server load, the domestic large-scale portal station is almost all this platform, the most important thing is that no authorization for free. Open source System. Foreign and large domestic idcwindows is required royalties ...
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