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This article only describes IP, virtual IP and scan changes in the same segment of the public network, and will introduce IP changes in different segments later. The experimental environment: 1. Stop RAC Cluster Services Cluster services are stopped at two nodes: [root@odb09 ~]# /u01/app/11.2.0/grid/bin/crsctl stop cluster -all [root@odb09 ~] ...

RKE:Ranchar Kubernetes Engine https://github.com/rancher/rkeBecause RKE is written by golang, download the binary files of the corresponding system directly.Download address: https://github.com/rancher/rk... preparation in advance 1. Ubuntu 16.04.3 LTS version is recommended; if CentOS 7 is used, version 7.3 or more is recommended.2. The hostna ...

Project Background: Considering many problems such as high reliability, there may be multiple architectures in public or private clouds, such as two places, three centers and so on. Requirements in different regions of the instance node through the same domain name resolution to local A records or cloud products CNAME, and achieve high reliabil ...

Background: In the actual use of the Internet, it is well known that the domain name is used to access a service directly, but with the continuous optimization of the Internet business structure, it may be a simple step for users to access a domain name to obtain related resources, but in fact, for the entire request process of the Internet is ...

Overview of Separation Resolution: Separate Resolution Domain Name Server is actually the primary domain name server. Separate Resolution mainly refers to providing different domain name resolution records according to different clients.When clients from different addresses request to resolve the same domain name, they are provided with differ ...

DEMO code for the project: https://github.com/heyu52/-spring-cloudWhat is Consul? Official website: https://www.consul.io/ The following is from: https://www.jianshu.com/p/e0986abbfe48 Consul has several components, but in general, it is a tool for s ...

Role of DNS systems The role of the DNS system in the network is to maintain an address database, which records the relationship between various host domain names and IP addresses in order to provide forward or reverse address query services to clients. Forward Resolution: Find the corresponding IP address based on the host name (domain name) ...

brief introduction In the net package, there are many structures, various functions and methods. I decided to go through it on the whole and make a map. Copy and paste source: https://studygolang.com/stati... constant const ( IPv4len = 4 IPv6len = 16 ) global variable Commonly used IPv4 address. var ( IPv4bcast = IPv4(255, 255, ...

I. Command Line You can get help information from the command line by running docker or docker help command (we take CentOS as an example): [root@iz2ze2bn5x2wqxdeq65wlpz ~]# docker help Usage: docker [OPTIONS] COMMAND A self-sufficient runtime for containers Options: --config string Location of client config files (d ...

1.1.1. What is a domain name A domain name is a website. www.baidu.com www.taobao.com www.jd.com Tcp/ip Dns Server: Resolve the domain name to an IP address.Save the mapping relationship between the domain name and ip. First-level domain name: Baidu.com Taobao.com Jd.com Secondary domain name: www.baidu.com Image.baidu.com Item.bai ...