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FASTDFS資源

分布式存儲系統設計的關鍵問題
http://blog.csdn.net/zhengleiguo/article/details/37939743

分布式(集群)文件系統的設計
http://blog.csdn.net/zhengleiguo/article/details/31395139

fastdfs storage server的設計與實現
http://blog.csdn.net/zhengleiguo/article/details/34108169

FastDFS分布式文件系統的安裝及配置-多服務器版等
http://wangying.sinaapp.com/archives/category/cachefilestorage/fastdfs

posted @ 2014-10-13 15:52 paulwong 閱讀(346) | 評論 (0) | 編輯收藏

FastDFS分布式文件系統的安裝及配置-多服務器版

摘要: FastDFS分布式文件系統的安裝及配置整體網絡配置 1 Tracker Server 192.168.127.11 /home/fastdfs/trac... 閱讀全文

posted @ 2014-10-13 15:47 paulwong 閱讀(241) | 評論 (0) | 編輯收藏

Linux查看程序端口占用情況

今天發現服務器上Tomcat 8080端口起不來，老提示端口已經被占用。

使用命令：

ps -aux | grep tomcat

發現并沒有8080端口的Tomcat進程。

使用命令：netstat –apn

查看所有的進程和端口使用情況。發現下面的進程列表，其中最后一欄是PID/Program name

發現8080端口被PID為9658的Java進程占用。

進一步使用命令：ps -aux | grep java，或者直接：ps -aux | grep pid 查看

就可以明確知道8080端口是被哪個程序占用了！然后判斷是否使用KILL命令干掉！

方法二：直接使用 netstat -anp | grep portno
即：netstat –apn | grep 8080

posted @ 2014-10-13 11:52 paulwong 閱讀(346) | 評論 (0) | 編輯收藏

Spring Boot

Spring Boot 在 Spring 生態中的位置：

Spring Boot in Context

https://github.com/spring-projects/spring-boot/tree/master/spring-boot-samples

posted @ 2014-10-11 20:34 paulwong 閱讀(510) | 評論 (0) | 編輯收藏

摘要: 一、安裝tracker_server1、安裝libevent卸載原有的lineventyum -y remove libeventwget http://down1.chinaunix.net/distfiles/libevent-1.4.12-stable.tar.gztar xvf libevent1.4.12-stable.tar.gzcd libevent./conf... 閱讀全文

posted @ 2014-10-11 18:32 paulwong 閱讀(5770) | 評論 (0) | 編輯收藏

MAC軟件與游戲

軟件大全-1段:

http://pan.baidu.com/s/1pJNUp9h 提取密碼:jgag

軟件大全-2段:

http://pan.baidu.com/s/1c0vk14O 提取密碼:nfy2

Adobe CC合集:

http://pan.baidu.com/s/1eQgToDs 提取密碼:esrb

蘋果字體大全:

http://pan.baidu.com/s/1kTytVKV 提取密碼:6urk

蘋果入門教程:

http://pan.baidu.com/s/1o6ukhxo 提取密碼:k75v

蘋果游戲大全：

http://pan.baidu.com/s/1o6r2sT8 提取密碼:vycn

posted @ 2014-10-02 11:31 paulwong 閱讀(994) | 評論 (0) | 編輯收藏

用Kibana和logstash快速搭建實時日志查詢、收集與分析系統

摘要: Logstash是一個完全開源的工具，他可以對你的日志進行收集、分析，并將其存儲供以后使用（如，搜索），您可以使用它。說到搜索，logstash帶有一個web界面，搜索和展示所有日志。kibana 也是一個開源和免費的工具，他可以幫助您匯總、分析和搜索重要數據日志并提供友好的web界面。他可以為 Logstash 和 ElasticSearch 提供的日志分析的 Web 界面說到這里... 閱讀全文

posted @ 2014-09-30 13:14 paulwong 閱讀(8575) | 評論 (0) | 編輯收藏

linux系統:"ping: unknown host www.baidu.com"

"ping: unknown host www.baidu.com"
解決方案：

如果某臺Linux服務器ping不通域名, 如下提示:

# ping www.baidu.com
ping: unknown host www.baidu.com

如果確定網絡沒問題的情況下, 可以通過如下步驟尋找解決辦法:

1) 確定設置了域名服務器, 沒有的話, 建議設置Google的公共DNS服務, 它應該不會出問題的

# cat /etc/resolv.conf
-------------------------------------------------------------------
nameserver 8.8.8.8
nameserver 8.8.4.4
-------------------------------------------------------------------

2) 確保網關已設置

# grep GATEWAY /etc/sysconfig/network-scripts/ifcfg*
-------------------------------------------------------------------
/etc/sysconfig/network-scripts/ifcfg-eth0:GATEWAY=192.168.40.1
-------------------------------------------------------------------

如果未設置, 則通過如下方式增加網關:

# route add default gw 192.168.40.1

或者手工編寫/etc/sysconfig/network-scripts/ifcfg*文件后, 重啟network服務:

# service network restart

3) 確保可用dns解析

# grep hosts /etc/nsswitch.conf
-------------------------------------------------------------------
hosts: files dns
-------------------------------------------------------------------

如果以上哪個有問題, 修正后, 再測試, 應該就沒問題了:

#ping -c 3 www.baidu.com
PING www.a.shifen.com (220.181.6.175) 56(84) bytes of data.
64 bytes from 220.181.6.175: icmp_seq=0 ttl=50 time=9.51 ms
64 bytes from 220.181.6.175: icmp_seq=1 ttl=50 time=8.45 ms
64 bytes from 220.181.6.175: icmp_seq=2 ttl=50 time=8.97 ms
--- www.a.shifen.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 8.450/8.977/9.511/0.446 ms, pipe 2

posted @ 2014-09-30 13:01 paulwong 閱讀(754) | 評論 (0) | 編輯收藏

logstash最佳實踐

0. 簡介

1. 基礎知識
1.1. 介紹
1.2. 安裝
1.3. Hello World
1.4. 配置語法

2. 輸入插件(Input)
2.1. 標準輸入(Stdin)
2.2. 讀取文件(File)
2.3. 讀取網絡數據(TCP)
2.4. 讀取 Syslog 數據
2.5. 讀取 Redis 數據

3. 編碼插件(Codec)
3.1. 采用 JSON 編碼
3.2. 合并多行數據(Multiline)

4. 過濾器插件(Filter)
4.1. Grok 正則捕獲
4.2. 時間處理(Date)
4.3. 數據修改(Mutate)
4.4. GeoIP 查詢歸類
4.5. UserAgent 匹配歸類
4.6. Key-Value 切分
4.7. 隨心所欲的 Ruby 處理
4.8. 數值統計(Metrics)

5. 輸出插件(Output)
5.1. 標準輸出(Stdout)
5.2. 保存成文件(File)
5.3. 保存進 Elasticsearch
5.4. 輸出到 Redis
5.5. 輸出到 Statsd
5.6. 報警到 Nagios
5.7. 發送郵件(Email)
5.8. 調用命令執行(Exec)

6. 尚未進入官方庫的常用插件
6.1. Kafka
6.2. HDFS
6.3. Scribe

7. 深入了解
7.1. 自己寫一個插件
7.2. 為什么用 JRuby? 能用 MRI 運
7.3. 其他類似項目

posted @ 2014-09-30 11:24 paulwong 閱讀(3725) | 評論 (0) | 編輯收藏

50道外企軟件測試面試題

What types of documents would you need for QA， QC， and Testing?
What did you include in a test plan?
Describe any bug you remember.
What is the purpose of the testing?
What do you like (not like) in this job?
What is quality assurance?
What is the difference between QA and testing?
How do you scope， organize， and execute a test project?
What is the role of QA in a development project?
What is the role of QA in a company that produces software?
Define quality for me as you understand it
Describe to me the difference between validation and verification.
Describe to me what you see as a process. Not a particular process， just the basics of having a process.
Describe to me when you would consider employing a failure mode and effect analysis.
Describe to me the Software Development Life Cycle as you would define it.
What are the properties of a good requirement?
How do you differentiate the roles of Quality Assurance Manager and Project Manager?
Tell me about any quality efforts you have overseen or implemented. Describe some of the challenges you faced and how you overcame them.
How do you deal with environments that are hostile to quality change efforts?
In general， how do you see automation fitting into the overall process of testing?
How do you promote the concept of phase containment and defect prevention?
If you come onboard， give me a general idea of what your first overall tasks will be as far as starting a quality effort.
What kinds of testing have you done?
Have you ever created a test plan?
Have you ever written test cases or did you just execute those written by others?
What did your base your test cases?
How do you determine what to test?
How do you decide when you have ‘tested enough?’
How do you test if you have minimal or no documentation about the product?
Describe me to the basic elements you put in a defect report?
How do you perform regression testing?
At what stage of the life cycle does testing begin in your opinion?
How do you analyze your test results? What metrics do you try to provide?
Realising you won’t be able to test everything – how do you decide what to test first?
Where do you get your expected results?
If automating – what is your process for determining what to automate and in what order?
In the past， I have been asked to verbally start mapping out a test plan for a common situation， such as an ATM. The 36 interviewer might say， “Just thinking out loud， if you were tasked to test an ATM， what items might you test plan 37 include?” These type questions are not meant to be answered conclusively， but it is a good way for the interviewer to see 38 how you approach the task.
If you’re given a program that will average student grades， what kinds of inputs would you use?
Tell me about the best bug you ever found.
What made you pick testing over another career?
What is the exact difference between Integration & System testing， give me examples with your project.
How did you go about testing a project?
When should testing start in a project? Why?
How do you go about testing a web application?
Difference between Black & White box testing
What is Configuration management? Tools used?
What do you plan to become after say 2-5yrs (Ex: QA Manager， Why?)
Would you like to work in a team or alone， why?
Give me 5 strong & weak points of yours.

posted @ 2014-09-23 10:37 paulwong 閱讀(301) | 評論 (0) | 編輯收藏

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