Firewalld#systemctl Disable FIREWALLD#iptables NVLClose the service process with the command #/usr/local/tomcat/bin/shutdown.shExtendedJava Container comparison http://my.oschina.net/diedai/blog/271367Http://www.360doc.com/content/11/0618/21/16915_127901371.shtmlRelationship between Java EE, J2SE, EJB, JavaBean, Serverlet, JSP http://bbs.csdn.net/topics/50015576Tomcat Server.xml Configuration Detailed http://blog.csdn.net/yuanxuegui2008/article/details/6056754Tomcat Common Database connection m
Tags: xftp pure-ftpd15.4 Xshell using XFTP to transfer filesDownload xftp software from www.netsarang.com websiteor, xftp:http://pan.baidu.com/s/1eSMSLN0 Password: 8os4Installing the XFTP software in the Windows7 system,Centos7 Turn off VSFTPD service #systemctl stop vsftpdcentos7 View Port #netstat-lntpIn the CENTOS7 system, press Ctrl+alt+f to eject the following File Transfer dialog box, and select the file to be dragged to the corresponding system to copy the transfer file.15.5 using PURE-FT
spaces (n is any number) move n characters like rightctrl+f or PageUp The screen moves forward one pagectrl+b or PageDown The screen moves backward one pagenumber 0 or shift+6 (^) move to the beginning of the bankshift+4 ($) move to the end of our lineGG move to First lineG or Shift+g move to Tail lineNG (n is any number) move to Nth rowAt the bottom right, you'll be prompted where the cursor is at the first line, the charactergame familiar with vim move cursor: https://vim-adventures.com/
10.32/10.33 rsync via service syncShut down the firewall, #systemctl stop FIREWALLDView iptables rules, #iptables-NVLTest whether the remote host 873 port is turned on, #telnet 192.168.133.130 873If rsync is changed to a different port, such as 8730, the command is #rsync-avlp--port 8730 192.168.133.130::test//tmp/test/10.34 Linux system logsLogrotate Cutting log files,Last view normal log in log;LASTB View login failure log;Security log/var/log/secure;10.35 Screen ToolVirtual Screen Screens-S c
Tags: Linux notesEight weeks two sessions (March 27)10.28 Rsync Tools Introduction10.29/10.30 rsync Common Options10.31 rsync sync via sshThe native a directory to B directory at a small time just added a file. Either find the file, or cover the B, and read and write a waste of time. You can synchronize the updated file with Rsync. A machine to B machine can also be synchronized.This machine rsyncA machine to B machine10.29 rsync Common Options--DELETE:A Machine 123 Synchronization B machine 123
Ping does not pass 192.168.100.1 and 192.168.100.100To view the gateway, run the following command.No gatewaysSet the gateway and run the following command.Can ping throughSet up DNS. 119.29.29.29 is a public DNS.Can ping the DNS, you can ping the outside network.Only 1 IPCannot ping pass.A machine equivalent to a router, B machine equivalent to a router phone, computer, can now be networked.10.18 iptables NAT Table ApplicationWindows cannot ping through 192.168.100.100Each operation needs to b
command. Clear the rules, save no use.Restart the service and load it back.Zeroing the calculatorI wrote a monitoring script and found that IP had a field that dropped the IP. Review the rules if the number of packets does not exceed 100. can be solved by sealing off. The number through the first column. Recalculate after 30 minutes.After the data came, said not to say, directly kicked off.After the data came, say, can't come in.The usage of-I. -I is inserted, metaphorically queued, inserted to
10.6 Monitoring IO PerformanceIostat and SAR belong to the same installation package; view disk usage;Iotop command, install #yum install-y iotop10.7 Free CommandFree to view memory usage10.8 PS CommandPS static view process status, top is the dynamic display process status;PS aux and ps-elf view process effect is similar;10.9 Viewing network status-l,listen monitoring;LNUTP, view only TCP and UDP;Established the number of concurrent connections, generally less than 1000, more than two thousand
Tags: Linux notesSeven weeks two sessions (March 20)10.6 Monitoring IO Performance10.7 Free Command10.8 PS Command10.9 Viewing network status10.10 Linux under Grab BagExtended TCP three-time handshake four times wave http://www.doc88.com/p-9913773324388.htmlTshark several usages: http://www.aminglinux.com/bbs/thread-995-1-1.htmlInstalling the package Sysstat will install the Iostat. And SAR are the same package.%util is the percentage of waiting IO. The hard disk can affect the performance of th
connect the MONGO from the library. (2) When deleting the MONGO table in hive, remove the jar package configuration in Hive-site.xml, and after disconnecting the Hive table from the MONGO, be careful! If you keep driving and drop directly, the table data in the MONGO will be drop. The most important thing is that your ops should do the right configuration of MongoDB in advance and give read-only permission to prevent misoperation. (3) in general, as long as the configuration is good, this plu
a sense of accomplishment.C. To have a complete example of how each knowledge point is used, please note that what is said here is not a single piece of code. Because you've never been exposed to programming in C + + before, the complete code can make you have a whole concept and be able to do a lot of practice quickly, since programming is the beginning of imitation, and the complete code tells you a complete step. Don't have to speculate on your own.D. Recommendation: "C + + Primer Plus"2. Wh
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Original: Go learn:learning as we GoAuthor: Senior engineer of Peter Kelly,teamwork Desktranslation: Wei SunZebian: The dawn of money, focus on architecture and algorithmic areas, seek reports or contributions please email qianshg@csdn.net, another "csdn Senior Architect Group ", there are many well-known internet companies, Daniel Architects, welcomed the architect plus qshuguang2008 application Group, notes
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