1. Disk management du command details
The du(disk usage) command calculates the disk space occupied by a file or directory. When no option is specified, it measures the current working directory and all subdirectories, displays the number of blocks occupied by each directory respectively, and finally displays ...
Posted on Sat, 04 Apr 2020 08:29:37 -0400 by archbeta
High performance mysql: database read-write separation (MySQL proxy)
1. What is the separation of reading and writing?
2. How to realize the separation of reading and writing of database
3. Implementation of read-write separation
High performance mysql: database read-write se ...
Posted on Tue, 10 Mar 2020 04:35:01 -0400 by Yamakazi
To view the file system formats supported by the current operating system:
[root@centos01 ~]# cat /etc/filesystems
# mkfs.ext4 is equivalent to mke2fs -t ext4
[root@centos01 ~]# mke2fs -t xfs -b 2048 /dev/sdb1
mke2fs 1.42.9 (28-Dec-2013)
Your mke2fs.con ...
Posted on Tue, 24 Dec 2019 13:03:37 -0500 by Janjan
Details of oracle connections
The default number of oracle connections is 150. When the number of connections at the same time is greater than this number, an error will be reported. The current solution is to increase the number of oracle connections from 150 to 1500. The operation is as follows
1. Problem solving before modification
If the nu ...
Posted on Mon, 09 Dec 2019 22:19:48 -0500 by 2levelsabove
First of all, before writing a script, you need to know the theoretical knowledge and practical operation of rsync, in order to write an ok script.
Let's start with a stroke:
rsync start command:
kill rsync process number
Don't say much, script:
After a framework upgrade, many components run for a period of time without access, and http requests are pending
1. Handle number exception
Check the log immediately after a problem occurs, and there are a lot of exceptions
Socket accept failed
java.io.IOException: Too many open files
The number of handles opened by th ...
Posted on Tue, 08 Oct 2019 07:00:27 -0400 by lepass_7
Maybe everyone has the feeling that optimizing the perfect computer system, you lend your computer to a computer and use it for a few days. When you get it back, you will find that all kinds of slow and messy software are loaded up. So how do we use Python to get computer relate ...
Posted on Sun, 06 Oct 2019 04:45:13 -0400 by PHP Newb
Links to the original text: https://fly533.iteye.com/blog/2428721
# 1. Designated User Running - Not Implemented
# 2. Default logs Directory - can you specify it separately?
# 3. JMX Monitoring - To be implemented, a sec ...
Posted on Sat, 05 Oct 2019 13:10:46 -0400 by dethknite
An example of automated deployment by golang
The automated deployment has Jenkins. Why do I have to write this file? It should be too much for the company server, and the Jenkins server is blown up.So it's too painful to use golnag to deploy automated deployment tools and scp every time the program is updated
Automated Deployment Tool for Pract ...
Posted on Fri, 04 Oct 2019 20:57:44 -0400 by elfyn
1. What is the OSI seven-tier model?
Physical Layer, Data Link Layer, Network Layer, Transport Layer, Session Layer, Representation Layer and Application Layer
2. Are there any terminal modes of switches? What are their functions?
Access type ports: can only belong to one VLAN, generally used to connect computer ports.
Trunk t ...
Posted on Sun, 25 Aug 2019 05:11:19 -0400 by stefharley