Linux Find Pid

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On how to prevent hackers from modifying the PID code in Amoy website

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall one of my Amoy site in the early morning yesterday when hackers modified the PID code, 12 O'Clock in the morning, I opened my Amoy website, found that my PID code was tampered with, so hurriedly the homepage download down to see the traces of changes inside, but see a long time also did not see that has been modified, this is definitely a master hacker ...

Deep analysis of the namespace technology behind Docker

I believe you have seen in many places "Docker based on Mamespace, Cgroups, chroot and other technologies to build containers," but have you ever wondered why the construction of containers requires these technologies?   Why not a simple system call? The reason is that the Linux kernel does not have the concept of "Linux container", the container is a user state concept. Docker software engineer Michael Crosby will write some blog posts and dive into Docke ...

Apache 2 Memory Footprint Monitor script in Linux

The Web server encountered a strange problem, in the running of many apache2 processes, there will be a process, slowly fill the full memory, and then the machine is like dead, write an automatic check script, check and kill the problem of the apache2 process, the issue is mitigated, but not resolved, Because it slowly fills up the memory, Linux releases the HDD cache and periodically has performance degradation. Using RLIMITMEM parameters to limit memory, also does not work, bw_mod limit traffic also does not work today modified the script, ...

Three ways to learn Linux

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall believe that a lot of beginners who want to learn Linux are worried about what to look at Linux learning Tutorials Good,   The following small series for everyone to collect and organize some of the more important tutorials for everyone to learn, if you want to learn more words, can go to wdlinux school to find more tutorials. What is deb format or software ...

PHP-FPM cannot start after server restarts unexpectedly

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall Monday is a new beginning!" Everything is going in the usual rhythm and methodically.   The first is to check the site and the application system is normal, and then look at the log information is also strange, a lap down the results of the same as before no other problems. Today is not the same as, after the on-line ...

A "fantasy" Docker Libcontainer Code reading tour

Editor's note: The last period of time reproduced in the "5 minutes to understand docker! "Very popular, a short 1500 words, let everyone quickly understand the Docker." Today, I saw the author make a new novel, and immediately turned over. The reason to call this code reading as a fantasy trip is because the author Liu Mengxin (@oilbeater) in the process of reading Docker source, found a few interesting things: from the code point of view Docker did not start a new development mechanism, but the existing tested isolation security mechanism to use the full use, Including Cgroups,c ...

Hadoop Copvin--45 common problem solutions

In the work life, some problems are very simple, but often search for half a day can not find the required answers, in the learning and use of Hadoop is the same.  Here are some common problems with the Hadoop cluster settings: 3 models that 1.Hadoop clusters can run?  Single-machine (local) mode pseudo-distributed mode 2. Attention points in stand-alone (local) mode? There is no daemon in stand-alone mode (standalone), ...

Hadoop Copvin--45 common problem solutions

In the work life, some problems are very simple, but often search for half a day can not find the required answers, in the learning and use of Hadoop is the same.   Here are some common problems with the Hadoop cluster settings: 3 models that 1.Hadoop clusters can run?  Single-machine (local) mode pseudo-distributed mode 2.   Attention points in stand-alone (local) mode? In stand-alone mode (standalone) ...

Have "Rong" is big: Docker container, 100,000 shop easy to host

"Editor's note" Shopify is a provider of online shop solutions company, the number of shops currently serving more than 100,000 (Tesla is also its users). The main frame of the website is Ruby on rails,1700 kernel and 6TB RAM, which can respond to 8,000 user requests per second. In order to expand and manage the business more easily, Shopify began to use Docker and CoreOS technology, Shopify software engineer Graeme Johnson will write a series of articles to share their experience, this article is the department ...

The security of container vs virtualization

Editor's note: When it comes to the safety of containers, most people say it's not safe enough to give up the high performance and convenience it brings. The author of this article thinks that Docker has already provided a safe mode, and can be used with all Linux security schemes such as SELinux, as, but many people do not use it well. By comparing bare-metal, VMS and container to buildings, apartments and private rooms, the authors illustrate the problem. Of course, from another perspective, the author only considers the problem of single tenant, the situation of the multi-tenant, C ...

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