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1. Two ways to deploy K8s in production environment kubeadm Kubedm is a tool that provides kubedm init and kubedm join for rapid deployment of Kubernetes clusters. Deployment address: https://kubernetes.io/docs/reference/setup-tools/kubeadm/kubeadm/Binary It is recommended to download the binary package of the distribution from the officia ...

Variable naming 1. It can only contain numbers, underscores and letters 2. Can only start with underscore or letter! Variable level Global: set from the command line or configuration file Play: set in play and related structures Host: tasks collected or registered by lists, facts Variable priority setting: Narrow and wide area Variable set ...

GitStats - Git historical statistics tool 2020-07-212020-07-21 10:31:28 read 1.1K0 If you are a member of the R & D effectiveness team or engaged in CI/CD or DevOps, in addition to providing infrastructure, indicators and data are also a very important link. For example, you need to analyze ...

1.1 Redis stand-alone problems 1.1.1 machine failure When a Redis node is deployed on a server, if the mainboard and hard disk of the machine are damaged and cannot be repaired in a short time, the Redis operation cannot be handled. This is the possible problem of a single machine Similarly, the server runs normally, but the main Redis proce ...

brief introduction DRF (Django REST framework) is a powerful and flexible toolkit for building RESTful web APIs. It is a secondary development based on Django framework. It is called DRF framework or REST framework for short. characteristic It provides a powerful Serializer serializer, which can serialize and deserialize efficientlyIt provid ...

Guava is Google's open source Java class library, which provides a tool class RateLimiter. Let's take a look at the use of RateLimiter to give you a sensory impression of current limiting. Suppose we have a thread pool, which can only process two tasks per second. If the task submitted is too fast, it may lead to system instability. At this tim ...

How does the partner system allocate memory Partner system The partner system is derived from the Solaris Operating System of Sun company. It is an excellent physical memory page management algorithm on the Solaris Operating System. However, good things are always easy to be stolen or imitated by others, and the partner system has also be ...

NFS introduction Network file system is a network file system that shares files with other clients for mounting nfs can only be shared between linux characteristic (1) Provide transparent file access and file transfer (2) It is easy to expand new resources or software without changing the existing working environment (3) High performance ...

1, Role of mask 1.1 the mask is 32bit from left to right, with 1 on the left and 0 on the right, and 1 cannot be interrupted 1.2 the mask is used to divide the network part and the host part of the ip address 192.168.1.1 255.255.255.0 11000000 10101000 00000001 00000001 IP address 11111111 11111111 11111111 00000000 Mask 11000000 101010 ...

1: Introduction to Dashboard Dashboard is a web-based Kubernetes user interface. You can use dashboard to deploy container applications to Kubernetes cluster, troubleshoot container applications, and manage cluster resources. You can use the dashboard to get the overview information of the applications running in the cluster, or you can creat ...