1. Yesterday noon server monitoring hint: server xx.xx machine cpu utilization exceeded 20% for 36 times in a row 2. Server basic information: javaweb project, provide query, export and other functions. 3. The monitoring information is as follows: yo...
< H2 > problem description < H2 > build a ftp server with Aliyun. The operating system is centos7; , which can be accessed normally by using tools such as browser and flashfxp, but an error will be reported when using folder access, as shown in the fi...
how to execute php files automatically in Linux environment? ...
what are the differences in implementation and functionality between RT, message queues and pipes (including anonymous pipes and FIFO)? ...
Today, I opened the command line and typed pip3-V and found that it always reported errors as follows: ,python3.6ubuntu this is the way to install py3.6 before. I reinstalled it, but running to sudo python3.6 get-pip.py will make the same error. No s...
When are DMA and interrupts in RT,IO mode used respectively? ...
pythonconmmandnotfound.pygdbm ...
at com.sun.proxy.$Proxy87.save (Unknown Source) ~ [na:na] at com.example.service.impl.UserAccountServiceImpl.register(UserAccountServiceImpl.java:82) ~[classes! :0.0.1-SNAPSHOT] at com.example.controller.LoginController.register(LoginController...
Why do pipes have to be half-duplex from a source point of view? ...
suppose there is a piece of code on the server side with two threads open, one to process the client connection and one to read the message sent by the client. m_fd = socket(AF_INET, SOCK_STREAM, 0); bind(...); listen(...); pid_t pid; while (1) { ...
logs in to a remote machine with root privileges and creates some static files under root, something like this: nginxnginx.confuserwww-data, root: what I am curious about here is that the permissions of my files and folders should be readable to...
one of the functions in my project is to write the data processed at the back end to the front end of excel, for download. There is no problem when writing data. However, when downloading, the backend reports the following error: but the path and fi...
problem description wrote a daemon with the PHP program, which takes up a lot of memory (% MEM:80%) and does not release it. I can only locate the PID, of this process, but I can t locate which piece of code in the program caused it. How can I find...
has just realized the communication between two clients (tcp protocol under linux). The implementation idea is very simple, that is, one client sends a message, and the server first read to and then write to another client, and that s it. after caref...
main server jps shows DataNodeDataNode jps: dead nodes is displayed as 0 ...
recently, I am trying to download a batch of server files through paramiko s sftp, but considering server performance and bandwidth, it is necessary to add a speed limit, but after a look around paramiko, I don t seem to have mentioned this kind of pro...
Why does the opentsdb service memory footprint continue to grow? ...
from __future__ import unicode_literals from flask import Flask from flask_restful import reqparse,Api, Resource from flask import Flask,jsonify,request from flask import abort from flask import make_response,Response import json -sharp-sharp-sharp...
Server An is old, with php + apache + mysql applications Server B s application wants to use A s mysql data is there a simple way, except for server A to write api ...
crontab runs every 3 hours 3 sh home test.sh in this case, I saved it at 8 o clock, so will it run at 9 o clock? what time is it every 3 hours? ...
vscode uses the shortcut key Ctrl+ to comment a line of jsx code. As shown in the figure below, it will cause an error if it is annotated like this. It is correct to comment as . Can this be configured? ...
first, apollo starts normally python code, very simple: import time import paho.mqtt.client as mqtt def on_connect(client, userdata, flags, rc): print("Connected with result code " + str(rc)) if __name__ == "__main__": ...
how can php71 be broken if the latest version of brew cannot be installed? ...
my online redis server operated keys * causing the company s business service to stop for 2 hours. Can the company fire me without compensation? ...
such as doT.js , how can I use it with require.js ? And webpack ? Introduced directly in html ? Must the module defined by require.js have a return , for example, I just do alert (2) in main.js require ([ math ]) , is it necessary to wr...