problem description recently I have been learning to use Hadoop, using macbook. Equipped with three ubuntu virtual machines, but the IP is dynamic beating all the time is very inconvenient, want to be fixed. Found on the Internet is in Mac and other t...
how does linux centos7.6 crawl and view udp packets sent and received? the communication between the platform and the device, the device that sends the package on the platform cannot be received, and the program has output before the platform is sent....
I use libpcap to send some captured traffic to ids for testing, but I don t have a real machine that responds to this traffic, that is, TCP packets don t have a ACK response confirmation. uses the function pcap_sendpacket . After sending it for mo...
for example, the ip address of this machine is: 123.57.XX.XX. if you enter the domain name of ftp, the upload fails, and the error in the following figure is reported. what is the principle that you can succeed if you fill in localhost? $ftp_server =...
only ps-A find the PID of gunicorn, and then directly kill-9 , is there any other safe and elegant way? ...
I try to mount an image file, which prompts mount: a : mount failed: Operation not permitted. ...
if the figure shows a section of the log, you need to count the execution time of this API and the corresponding parameters. That is, all the content between the beginning of the api dialog line until the end of the [info] execution time: 1.036043...
how can svn be deployed to the same site with two domain names, one for the official domain name and one for the test domain name, and then by submitting an automatic update to the test domain name, the testable official domain name needs to go to the se...
< H1 > what is the main purpose of upnp protocol? Can this requirement be achieved? < H1 > Baidu went to php java to implement upnp, and found that they are all profiles . so I d like to ask a question: if there are multiple routers and multiple nat...
as shown in the picture, a picture download function: does the writing order of header affect the output? ask the handsome guy to explain it. Thank you . ...
discuss a few questions, thank you! 1 the working principle of aof storage is used by Magi Redis? 2 how does aof rewrite work? In which processes the main thread and the generated new thread play a role respectively. ...
build a git warehouse on the server, and then git clone in any directory after all the operations are completed, and then touch a file. After git add and git commit, the output git log; shows that the submission was successful, with the corresponding sub...
in case nginx shuts down abnormally, it will not be known in time. if there is no software to write a sh script to check whether ping is connected, you can also send email ....
this is true. My computer is a win10 system. When vagrant is installed on my computer and LNMP environment is installed in vagrant, all related services start normally. both host and virtual machines can ping each other , but browsers in host computers...
simulate a redis cluster on a linux host according to the tutorial https: redis.io topics clust... on the official website, where the command to set up the cluster is as follows: redis-cli --cluster create 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7...
problem description after the egg.js project is started on the server, the page cannot be accessed by the public network. The service startup was successful [egg-scripts] Save log file to root logs [egg-scripts] Wait Start: 1... [egg-scripts] egg st...
I am using Aliyun s server, and now I want to change the server password. Log in with xshell. Do I need to restart the Ali CVM after changing the password successfully? ...
problem description I scanned my blog with kitchen knife software, and then I couldn t access my blog, but I could access https normally. 1ping www.dreamate.topping2 380 debug by myself 4 I still can t access debug 5 other https projects o...
the server I bought in Aliyun install the ssl certificate in the apache server reference refer to the above address now want to know what should be written in the absolute path of the project address to write as var www html, I m not sure w...
after watching Uncle Psy s linux cuisine, I wrote an identical script on the knowledge of learning service, but it didn t work. Is this the wrong way to write it? The process is as follows: [root@localhost backups]-sharp ls backup.log backup.sh bac...