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matters needing attention When using two Linux hosts, you must ensure that the two devices can be connected to each other. You can configure static IP first to test whether the two hosts are connectedIn the virtual network editor, do not use the local DHCP service to assign IP addresses to virtual machinesBoth devices use host only mode ...

Linux Capability exploration experiment Experimental description In this experiment, we will feel the advantages of linux capability function in access control, master the purpose of using Capability to comply with the principle of minimum permission, and analyze the design of access control based on Capability in linux. Environment construc ...

catalogue 1, Introduction 2, MHA services working principle Actual operation Initialize environment Modify the hostname of Master, Slave1 and Slave2 nodes Master slave synchronization Install MHA 1, Introduction MHA (Master HA) is an open source MySQL high availability program. It provides the automatic master failover function for M ...

FTP service in Linux 1, Introduction to FTP (1)FTP service - the protocol used to transfer files FTP is the English abbreviation of File Transfer Protocol. It is one of the protocols in TCP/IP protocol group. Used for two-way transfer of control files on the Internet. At the same time, it is also an Application. There are different FTP a ...

explain It's a record of a pit, tm. It's been torturing me for a long time. All kinds of check systems, such as RI Zhi and Baidu, are finally compared with the previous environment. The RI Zhi error report is strange and outrageous.By the way, if there is a problem with k8s, we can look at the k8s log first. The way is as follows First use ...

Let's first look at the description of condition variables in Linux high performance server programming: The above words can be summarized as follows:         Condition variables can be used when a thread in a multithread depends on the change of shared data by another thread! It's easy to understand conditional variabl ...

1. Preface Recently, a small partner left a message to me in the background, saying that he wrote an Api interface for uploading large files with Django. Now he wants to test the stability of interface concurrency locally and ask me if I have a good scheme This article takes file upload as an example   Jmeter concurrent execution of Pyth ...

Reprinted from https://www.testwo.com/article/725 There are five main tests for performance testing: 1. Stress Testing: Emphasizing Extreme Violence 2. Stability test: Long-term operation under certain pressure 3. Benchmarking: Performance testing under specific conditions 4. Load testing: performance under different loads 5. Capacity Test: Op ...

1. Introduction to select Under linux, we can use select for I/O reuse, monitor multiple file descriptors and judge whether there are qualified events. When using the select function, we can see whether there are readable, writable or error events. 2 function explanation 2.1 function prototype #include <sys/select.h> int select(i ...

1, Introduction to Rancher Rancher is a container management platform that helps organizations deploy and manage containers easily and quickly in a production environment. Rancher can easily manage kubernetes in various environments, meet IT needs and support DevOps teams. Kubernetes has not only become the standard for container orchestratio ...