1, Preparatory knowledge
1. Understand source IP address and destination IP address
There are two IP addresses in the IP packet, one is the source IP address and the other is the destination IP address. IP address is responsible for transmitting data from one host hardware to another host hardware. IP address identifies the uniqueness of the ...
Added by neal.pressley on Tue, 08 Mar 2022 17:58:56 +0200
libselinux is a very important dependency package in the Linux system. Many software rely on this package, such as OpenSSL, OpenSSL devel, systemd and so on. If this package is missing, it will cause disastrous consequences. For example, the basic commands such as ls, cp and mv cannot be used, and the yum command cannot be used normally. Howeve ...
Upgrade and rollback of Pod
When a service in the cluster needs to be upgraded, we need to stop all pods related to the service, then download the new version image and create a new Pod. If the cluster scale is relatively large, this work becomes a challenge, and the way of stopping all and then gradually upgrading will lead to the unava ...
Added by Calamity-Clare on Tue, 08 Mar 2022 16:20:23 +0200
There are two main WiFi configuration tools used under Linux system:
wireless tools: it mainly configures WEP encrypted WiFi. Now iwconfig and other commands have been replaced by iw. iw is also partially used for WiFi configuration in this article. If you want to know more relevant functions, you can enter iw help in the shell window to view ...
Added by candy2126 on Tue, 08 Mar 2022 10:18:19 +0200
i2c module block diagram ug-1085(ch22)
2. Device tree of controller and slave devices
3. Check i2c controller driver registration process: standard platform driver framework
Interface for reading temperature from the device:
The essence of reading and writing: finally, it is to read and write through adapter - > algo in the cl ...
Added by laeelin on Tue, 08 Mar 2022 10:15:31 +0200
Basic concepts of LVM logical volumes
Logically add different hard disks or partitions to a unified volume groupThe VG volume group is equivalent to a large logical hard diskLV logical volume, equivalent to partition, takes out a certain space from the volume group
The creation and management of logical volumes and hard disk partitions are si ...
Added by harkonenn on Tue, 08 Mar 2022 09:26:47 +0200
1, Stand alone installation
1.1 elasticsearch and kibana
There are three ways to install es and kibana: yum, rpm, tar gz The latter two methods can be used in the Intranet environment when yum needs to open the external network.
1.1.1 es installation
How we install rpm this time:
Download the rpm file and upload it to the server, and ins ...
due to the speed limit of bram form, under the same urgent time conditions, we still changed back to the way of axidma to reduce the dimension and attack. For the speed of a few megabytes, there is a feeling of killing chickens with an ox knife. There is no way. The original knife is just a little worse. The ox knife is ea ...
Author: michelangela Yang
Engineers who pursue technology are generally addicted to cleanliness, especially in the cloud native world. Although Kubernetes has formulated the container runtime interface (CRI) standard, in the early stage, only Docker can be used when the container runs, and Docker does not adapt to this standard, so it opened ...
Added by wiseoleweazel on Tue, 08 Mar 2022 08:16:31 +0200