Programmer Group

1, Fundamentals Here, "copy on write" is enclosed with a quotation mark, because this is specifically for the copy on write effect when rsync backup is used, rather than the actual copy on write effect. Its purpose is as follows: After backing up the data using rsync, create a snapshot immediately: The data state of the snapsh ...

Author: His Aunt and AuntLinks: https://www.jianshu.com/p/317b2d6bde1b This is the first in a Glide Source Parsing series where you can learn: 1. How Glide binds Activity, Fragment life cycles. 2. How Glide monitors memory and network changes. 3. How Glide handles the life cycle of requests. 1.0 Life Cycle Related UML Class Diagram 2.0 Lifec ...

1, Deployment installation (1) Common installation methods 1.  curl https://syncd.cc/install.sh | bash 2. dockerfile installation mode is under test (2) Installation references 1.https://syncd.cc/docs/#/install 2.https: //github.com/dreamans/syncd  3.https: //gitee.com/dreamans/syncd 2, Specification for use (I) service address 1. ...

Because the company changed the server service provider and the server was migrated to another service provider, today we will simulate the operation of online migration of gitlab git-A IP:192.168.82.184 git-B IP:192.168.82.184 If the version number is the same, the backup migration will fail   Step 1.gitlab backup gita-A #c ...

1. E-mail system Mail User Agent (MUA): A server that receives and receives mail for users; Mail Delivery Agent (MDA): Mail can be saved for users when they are offline; Mail Transfer Agent (MTA): Forward and process messages between different e-mail service providers. In deploying an e-mail system, the outgoing service is based on the post ...

It's still the previous chart 1, back end Server verification needs to be performed again before registration Is the user name registered Is the mobile number registered Whether the verification code is wrong Whether the verification code is implemented Password is encrypted with BCrypt Controller layer The method of user name verificatio ...

In this article, we mainly introduce the related configurations of Cassandra. I will introduce the related configurations of Cassandra according to the horizontal dimension of cluster and node. I may not list some configurations here. Please refer to the detailed introduction in cassandra.yaml. How to configure Cassandra needs to be in the C un ...

When using kubeadm to install k8s, there is a step to download images. Generally, many methods are used: use docker images to download the image name and tag the image name again, and then configure the cluster sub ip information during initialization As follows:         1.Set up kubelet Domestic pause image         cat >/etc/sysconfig/kube ...

Prometheus is the default monitoring scheme in Kubernetes, which focuses on alerting and collecting and storing recent monitoring indicators.However, Prometheus also exposes some problems at a certain cluster size.For example, how can PB-level historical data be stored in an economical and reliable way without sacrificing query time?How do I ac ...

1. Configure Samba service on the server The first step is to install samba service through yum warehouse. The second step is to configure shared resources. In the process of configuring shared resources, samba service uses password authentication mode by default. The password authentication mode is based on the account information databa ...