Tag：colony
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Time：2019-12-12
Why there are clusters Before redis 3, each redis machine needs to store all redis keys, which requires that each redis machine has enough memory And it can only be written by the primary node and read by the secondary node. There will be performance bottlenecks in the case of high concurrency Although there is […]
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Time：2019-12-11
Kafka Construction: To create a zookeeper container: Here we use the simplest way to create an independent zookeeper node. If you want to consider the high availability of zookeeper, you can make it into a cluster, preferably with multiple machines. $ docker run -d –name zookeeper -p 2181:2181 -t wurstmeister/zookeeper By default, the configuration file […]
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Time：2019-12-5
Recently, someone asked if they could send some big data related knowledge! Today, I will start with the installation environment and build my own learning environment. There are three ways to build Hadoop and its use environment: Stand alone version is suitable for development and debugging; Pseudo distribution is suitable for simulating cluster learning; Fully […]
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Time：2019-12-4
Consul cluster server mode Architecture diagram There are two operation modes of consul in production environment: server mode and client mode (DEV mode belongs to development mode, which is not discussed here). First, we use server mode to build a consul cluster, as shown in the figure below: Consul server a, B and C are […]
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Time：2019-11-30
colony If our project runs on a machine, if the machine fails, or if the user’s request is high and one machine can’t support it. Our website may not be accessible. How to solve it? We need to use multiple machines, deploy the same program, and let several machines run our website at the same […]
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Time：2019-11-28
In this paper, Xi Jiangang, the person in charge of the real-time platform of funny headlines, shares the construction of the real-time platform of funny headlines, which is organized by Ye Lijun. This article will share from four parts: the architecture of the platform, the current situation of Flink, the application of Flink and the […]
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Time：2019-11-26
Abstract: With the growth and development of business, different elastic search clusters bear various functional requirements. Especially when the scale of the cluster grows and the business is huge, it needs a lot of energy to operate and maintain the cluster. Alibaba cloud elastic search has developed a set of intelligent operation and maintenance system, […]
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Time：2019-11-24
background Network delay is one of the main performance bottlenecks in the network. In the worst case, the client needs DNS query (1 RTT), TCP handshake (1 RTT), TLS handshake (2 RTTS), and the last HTTP request and response to open a link. It can be seen that the client needs 5 RTTS to receive […]
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Time：2019-11-13
Ansible, playbook, huaweiyun, CEPH First, purchase the virtual machine needed to build the CEPH cluster on Huawei cloud: Then purchase the storage disk required by CEPH Mount the purchased disk to the virtual machine used to build CEPH Installing ansible on the springboard machine Check the ansible version and verify […]
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Time：2019-11-9
If I ask you how to deploy an etcd cluster on Google cloud or Alibaba cloud, you will automatically give the answer: of course, use etcd operator! In fact, almost overnight, kubernetes operator, a new thing, has become a de facto standard for developing and deploying distributed applications. Today, no matter etcd, tidb, redis, Kafka, […]
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Time：2019-11-5
Preface Spark is a very popular big data processing engine. Data scientists use spark and related ecological big data suite to complete a large number of data analysis and mining of rich scenes. Spark has gradually become the industry standard in the field of data processing. But Spark’s own design is more inclined to use […]
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Time：2019-11-5
If there is an online directory in the patch, it is an online patch. There is no need to shut down the database. The online sub cluster and non cluster are as follows Check readme to learn how to play online patches $ cat README.txt Oracle Database 11g Release 11.2.0.3.0 ORACLE DATABASE Patch for Bug# […]
