When installing software with yum, the following message appears: another app is currently holding the yum lock;waiting for it to exit
Sometimes when upgrading files with yum, you may encounter the following situation:
another app is currently holding the yum lock;waiting f …
Logging into a server is a routine task, but many users frequently encounter the “maximum connections exceeded” issue. Today, let’s discuss the solution.
First, it’s worth noting that in the Windows Server 2003 operating system, the Windows components “Terminal Server” and “Terminal …
While setting up a Varnish cache server environment today, I ran into an issue during installation. When running the configure script, it threw the following error:
configure: error: readline library not found
I had already installed the readline package on the system before this happened.
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Today, while helping a client troubleshoot a system that couldn’t be accessed remotely, I ran into an issue. I checked and saw that port 3389 was open normally, the Terminal Services service was running fine, and the firewall and other settings were all disabled. However, remote connections to the host still failed, even though connections from within the host worked perfectly.
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Here is an example: Before modifying /etc/network/interfaces, it’s best to back it up firstcp /etc/network/interfaces /etc/network/interfacesbackupiface eth0 inet staticaddress 192.168.0.16netmask 255.255.255.0gateway 192.168.0.1 …
hdparm can detect, display, and set parameters for IDE or SCSI hard drives. It is a shell utility in Linux for viewing and modifying IDE drive parameters.
1. Installation, the command is as follows:
yum -y install hdparm
2. Run:
hdparm -tT /dev/xvdb1
The device name above is …
If you encounter the “550 create directory operation failed” error, it’s usually caused by the SELinux security mechanism. Simply disable SELinux to resolve it: # vi /etc/selinux/configChange SELINUX=XXX –>XXX represents the level
to SELINUX=dis …
The RHEL ISO does not include it, so you’ll need to download the source package from a third-party site and compile it for installation. This software also has a Windows version. It can report network interface traffic status and view the bytes sent and received by the NIC, generating data once per second. 1. ifstat installation wget http://gael.roualland.f …
On Windows systems, we can use the networking status in Task Manager to check bandwidth usage. So how do we view the host’s bandwidth usage on Linux?
In fact, there are many ways to check network interface traffic on Linux. Below, we’ll use the iptraf software as an example to explain: …
How to Find the PID of a Port in Use on Windows
1.Click Start –> Run –> type cmd, or press the Windows + R key combination to bring up the command prompt window.
2.Enter the command: netstat -ano, to list all ports. In the list, look for the port that is occupied—for example, port 49157—and find it first.
To check the PID corresponding to the occupied port, enter …
