The chronyd time server, like the previous NTP function, provides time.
I'm not good at basic concepts. Cronyd was born after NTP.
Recently, I downloaded the latest Centos Linux 8.1, and found that there is no ntp service in it. Baidu yisou found that it was changed to Chronyd. This article is to deploy a server + client test.
1. Server side
Posted on Fri, 29 May 2020 03:53:18 -0400 by valtido
In the face of multi cluster enterprise level complex architecture, it is very important to prepare a set of backup cluster. The backup cluster usually does not participate in reading and writing operations, but always contains all the data of the business cluster. When there is a business cluster that cannot be used, you can directly switch e ...
Posted on Thu, 28 May 2020 07:15:27 -0400 by ayzee
Experimental purpose: to deploy httpd high availability service (+ NFS) using corosync v1 + pacemaker.
This experiment uses Centos 6.8 system, file system resource server, NA1 node 1, NA2 node 2, VIP192.168.94.222
Directory structure: (annoying, the layout is in a mess)
1. corosync v1 + pacemaker basic installation
2. Installation of pacemak ...
Posted on Thu, 28 May 2020 03:28:39 -0400 by noirsith
https://flink.apache.org/ #Flink official website
This step (k8s) deployment requires a profile
First copy all the configuration files of Flink to the local, and then hang the local configuration files in the POD
1.1 configuration file of jobmanager
vim flink-conf.yaml Modify profile
Posted on Wed, 27 May 2020 11:14:00 -0400 by jviney
ganymed-ssh2 is a tool library that uses SSH to connect to the server through java. The previous two versions of pom file configuration are as follows:
<!--ssh connect linux-->
<!-- https://mvnrepository.com/artifact/ch.ethz.ganymed/ganymed-ssh2 -->
Posted on Wed, 27 May 2020 10:40:53 -0400 by kharbat
Find a system call whose system call number is the same as the last two digits of the student number [i.e. system call 97]
Trigger the system call through assembly instructions
Trace the kernel process of the system call through gdb
Focus on the analysis of the save site, recovery site and system call return of the system ...
Posted on Wed, 27 May 2020 09:44:19 -0400 by Birmingham
1, Deploy Registry private warehouse
1. Configure registry private warehouse
2. Upload image to registry private warehouse
2, Configure Docker client to access private warehouse
3, Configure registry load authentication
As more and more images are used by docker, there needs to be a place to save images, which is the warehouse ...
Posted on Wed, 27 May 2020 04:21:45 -0400 by vocoder
The two hosts are backup to each other, and the Web service displays the resources on the NFS file system.
Add a Linux 6.8 system as an NFS file server
1. Complete the basic configuration of HeartBeat
2. Configure server for NFS
3. Configure HeartBeat resource management server to use NFS resources
4. Result test
1. Complete the b ...
Posted on Tue, 26 May 2020 11:20:35 -0400 by steadyguy
1, docker installation configuration
Modify host name
[root@docker ~]#vi /etc/hostname
View Linux system information
[root@docker ~]# cat /etc/redhat-release #View version number
CentOS Linux release 7.7.1908 (Core)
[root@docker ~]# uname -r #View linux kernel
Replace with alicloud yum source
[root@docker ~]# wge ...
Posted on Tue, 26 May 2020 11:04:57 -0400 by rhock_95
A website was deployed a few days ago. It turns out that I have been uploading files through ftp after publishing. Several tycoons told me about multi-stage construction. At this time, I don't need to publish any more. I will directly add docker support to the project.
#See https://aka.ms/containerfastmode to understand how Visual Studio uses ...
Posted on Mon, 25 May 2020 11:01:36 -0400 by kotun