One. Theory
・HA is highly available and has been It is called hot standby.
・High availability principle: Two machines A and B. Normally, A provides services and B is idle. When A is down or the service is down, switch to B Continue to provide services and use heartbeat for communication and elections
When creating an instance in the k8s cluster, it was found that the etcd cluster status failed to connect, causing the creation of the instance to fail. So I checked the cause.
Here is the he
I have read the relevant documents I can find, but I still have questions.
What did I read
From http://wiki.apache.org/cassandra/Operations#Moving_nodes up
If you add nodes to you
1. Install JDK
You need to uninstall the system default OPENJDK first, and install the JDK1.8 64-bit version.
Uninstall open-jdk
rpm -qa|grep java
Check the installation of
Role-based authenticationThe business cluster is configured to enable role-based authentication by performing the following steps. The configuration steps are as follows:
Modify the authoriza
I am running a kubernetes cluster on my centos machine.
I don’t want to create a pod for mysql. MySQL is installed on another machine in the same network (the machine is not dedicated to kubernate
Take the maven project as an example:
1. Configure pom. xml:
redis.clients
jedis
3.0.1
jar
compile
2. Main category: p> public class RedisCluster {
public static void main(String[
I have a program in which Log4j is used to record some information. When I test in IDE/Intellij, the log file can be generated successfully. And when I submit this task to flink independent cluster
1. Introduction to Swarm
Swarm is a self-developed container cluster management system developed by Docker. Swarm existed as an independent service in the early days, in the Docker Engine Swa
Cluster type: Cluster concept 1. Two key features Cluster is a group of service entities that work together to Provide a service platform that is more scalable and usable than a single service enti
