Programmer Think

PS: if you want to see my solution directly, you can jump to 2.5. I hope it can help you   1. Problem description After connecting to the SFTP server, it is found that the required files cannot be obtained, and an exception occurs when SFTP calls the cd method 2. Solution process 2.1 due to a policy problem, the SFTP server cannot be connected ...

Main reference Using qemu to build kernel development environment - lixiaomu - blog Park It mainly involves the following points: virtualbox6.1, run ubuntu server 18.04, and then open ssh server for mac host access. Otherwise, the virtual box screen can't zoom automatically. It's really hot eyes. It is estimated that it is not so easy to com ...

A. View disk devices /proc/partitions Question 1: how to add a new hard disk virt-manager Question 2: how to find files in the file system find /mnt/ -name "*westos*" find /mnt/ -name westosfile1 Question 3: set the depth to find the file find /mnt -maxdepth 1 -name westosfile1 #The depth of the lookup file is 1 layer find /mnt -mi ...

Analysis of problems encountered when edgemesh hijacks traffic using iptables concept Cloud side communication: cloud container. Access the edge container through serviceName/clusterIP;Edge cloud communication: in contrast to the above, the edge container accesses the cloud container through serviceName/clusterIP;Edge to edge communication: t ...

Article catalog preface Initialization after installing Linux Turn off selinux functionThin boot entry a) Start self starting service b) Delete special users and user groupsUser and password securityGenerally, the user password is required to be greater than 8 digits. Try to use a strong password, which is composed of numbers, case and special ...

The previous chapter introduced linux network namespace, and then discussed how to make an independent network namespace communicate with the host network. Here we need to use the linux virtual network device veth. veth equipment veth devices always appear in pairs. They are usually used to connect different network namespaces (hereinafter re ...

I Linux IP address configuration Acquisition method - automatically acquire and specify IP The first method: automatic acquisition Note: after logging in, set automatic ip acquisition through system settings Features: linux will automatically obtain ip after startup. The disadvantage is that the ip address automatically obtained each tim ...

reference material Main references: Hadoop cluster installation and configuration tutorial_ Hadoop2.6.0_Ubuntu/CentOS Hadoop installation tutorial_ Stand alone / pseudo distributed configuration_ Hadoop2.6.0(2.7.1)/Ubuntu14.04(16.04) Installation and configuration of hadoop under Ubuntu Main references: ubuntu14.04 build Hadoop 2 9.0 cluster (d ...

preface For the concepts of process, multithreading and fork, please see the two articles I wrote before. Linux: process control (process creation, process termination, process waiting, process program replacement) Linux: detailed explanation of multithreading (thread concept, thread control - thread creation, thread termination, thread wa ...

As operation and maintenance, we all have a root deletion plot. If we are unhappy, we can delete the root and run away at any time, but it has never been implemented. The operation and maintenance department often teases itself with rm -rf /, but in fact, rm -rf / does not work under the current security mechanism. You see: [root@zmedu-17 ~]# ...