Firewall D is the front-end controller of iptables, which is used to implement persistent network traffic rules.
It provides command line and graphical interfaces, which are available in the repositories of most Linux distributions. There are two main differences between using firewall D and controlling iptables directly:
Firewall D uses zone ...
Added by 01706 on Thu, 28 May 2020 07:10:56 +0300
In the Oracle database, the optimizer needs to rely on the collection of statistical information of related objects in order to generate the optimal execution plan. The database can automatically collect the execution plan or use the package DBMS_STATS is collected manually. This article does not explain the collection of general statistics. It ...
Added by libertyct on Wed, 27 May 2020 15:38:34 +0300
We use Suricata for traffic analysis. Suricata is deployed on a 48-core physical machine with a multi-network card. Due to business needs, suricata's network card for monitoring traffic has been upgraded from 5 to 6, enp176s0f1 has been added, and several similar errors have been found in suricata's log:
<Error> - [ERRC ...
Added by pandaweb on Tue, 26 May 2020 21:51:27 +0300
Under the linux system, the disk is replaced, but for the HP array card, the common MegaCli, storcli and percli can not get the disk information. At this time, the special tool ssacli is needed.rpm package download address: https://downloads.linux.hpe.com/SDR/repo/mcp/centos/7/x86_64/current/
View raid card information (including controller st ...
Added by flumpy on Tue, 26 May 2020 19:04:53 +0300
Function Description: display the list of recently logged in users
The last command will read the wtmp file under / var/log / and display the user name of the login system recorded in the file.
Set the number of lines to display the list
Do not display the host name and IP address of the l ...
Added by scott56hannah on Tue, 26 May 2020 18:25:56 +0300
Chapter 0 of MySql, installation and cluster configuration
1, MySql installation
1. RPM installation
RPM installation, unable to customize some installation paths and configuration file paths
##Fill in the pit later
2. Generic installation
Binary precompiled Generic, download address:
Added by khendar on Tue, 26 May 2020 17:54:42 +0300
Function Description: add user or update default new user information
Usage: useradd [options] login_name
When adding a new user, specify the UID number manually. The default is the UID+1 of the previous user, the UID usage range (CentOS6) 500 +, (CentOS7) 1000+
When a ...
Added by j152 on Mon, 25 May 2020 14:46:35 +0300
Today, my colleague said that a new cloud server is installed, and it is normal to log in Using ssh, but the above service port of Dayun database cannot be accessed.
Using netstat ANP to view the port is normal to listen, and the listening address is also allowed to be accessed by any ip
And the firewall and iptables are both closed
I was also ...
Added by Maskeeper on Sun, 24 May 2020 15:00:06 +0300
Added by skiingguru1611 on Thu, 21 May 2020 20:34:51 +0300
IPC (InterProcess Communication) refers to the communication or exchange of information between different processes.
IPC usually includes pipeline (including nameless pipeline and named pipeline), message queue, semaphore, shared storage, socket, Streams, etc. Soc ...
Added by ValdouaD on Mon, 18 May 2020 09:00:24 +0300