Overview of Linux Cluster
According to the function, it can be divided into two categories: high availability and load balancing.
High availability clusters usually consist of two servers, one working and the other serving as redundancy. When the serving machine goes down, redundancy will take over and continue to serve.
Posted by matjaz on Fri, 17 May 2019 03:48:37 +0200
Troubleshooting Gitlab-runner build failures:
Causes of the problem:
Automated build based on gitlab ci. job runs with errors when merge_requests request is initiated to start building. It is officially recommended to upgrade gitlab-runner version. Build runs with errors after version upgrade. The errors are as follows:
Running with gitlab-run ...
For a professional programmer, Linux-related knowledge is necessary. Text processing is more common, such as formatting the output data we need, which may come from text files or pipe characters, or counting the frequency and total number of data we need in the text.Then awk is worth learning.
In Linux, awk, sed, grep are cal ...
Posted by stuartbrown20 on Thu, 16 May 2019 23:12:17 +0200
When compiling a bitcoin wallet, you need to rely on the Boost library. Because it takes a long time to compile and wastes a lot of time in "give it a try", write down the successful process.
Download the Boost installation package
Download via wget tool
wget https://dl.bintray.com/boostorg/release/1.64.0 ...
Posted by ldb358 on Thu, 16 May 2019 20:02:36 +0200
What CUDA is is is not described, but how to achieve multiversion coexistence and real-time switching of CUDA.
1. Install multiple versions of CUDA
Here, let's take the cuda9-1 and cuda9-0 versions as examples (it doesn't matter which one you install first)First, select the version of cuda you want from the cuda version libra ...
Posted by tyson on Thu, 16 May 2019 17:35:37 +0200
1. Host Planning
Matters needing attention
If the master or minion configuration file is modified, the corresponding service must be restarted.
2. Grains VS Pillar
3. Pillar Basic Information
2 Pillar data is the dynamic as ...
Posted by phpwizard01 on Thu, 16 May 2019 14:30:01 +0200
18.1 Cluster Introduction
Linux clusters are divided into two main categories based on their functions: high availability and load balancing
High Availability Clusters usually consist of two servers, one working and the other serving as redundancy, which will continue to serve when the serving machine goes down.
* Open source software for hi ...
Posted by samusk on Thu, 16 May 2019 14:12:21 +0200
As we mentioned earlier, there is a problem with sorted list-based timers: adding timers is inefficient.The time frame we discuss below solves this problem.
In the figure, this is a simple time wheel:
The solid pointer in the wheel points to a slot on the whee ...
Posted by 696020 on Wed, 15 May 2019 22:39:28 +0200
Generate certificates for WEB servers with openssl (self-signed CA certificates, server certificates)
Source: https://www.cnblogs.com/osnosn/p/10608455.html Come from osnosn's blog
Written in: 2019-03-28.
Do not want to use self-signed certificate, want to apply for a free server certificate online, see this article: Apply for Freessl Server C ...
Posted by rid243 on Wed, 15 May 2019 13:31:28 +0200
Encryption and Security
Common encryption algorithms and protocols include symmetric encryption, public key encryption, one-way encryption and authentication protocols.
Symmetric encryption, using the same key when encrypting and decryptingCommon symmetric encryption: DES,3DES,AES,Blowfish,Twofish,IDEA,RC6,CAST5
The proc ...
Posted by Skudd on Wed, 15 May 2019 13:14:15 +0200