as400 high availability

High MySQL Availability Based on MHA and Galera Cluster MHA: Master HA is an open-source MySQL high-availability program. It provides the automatic master failover function for the MySQL Master-slave replication architecture. When MHA detects a master node failure, it will escalate the slave node with the latest data t

KeepAlive routing software is written in C, providing simple, robust high availability for LoadBalance Linux systems, keepalive Dynamic inspection based on the health of LoadBalance server pools, adaptive maintenance and management. On the other hand, high availability is through the VRRP protocol. VRRP is the basic br

Before Hadoop-2.4, the ResourceManager in yarn was also a single point of failure, like Namenode in hadoop-1.x, because hadoop-2.x already supports Namenode ha (high availability), it is natural to be in a version of Hadoop Now ResourceManager ha, or else will incur some hindsight after the criticism of Zhuge Liang. This article describes the high

This article describes the high availability of mysql master/master replication + keepalived (using VIP to access the database prompts that connection is not allowed), which has some reference value. let's take a look at it. Mysql master-master replication + keepalived high availability (using VIP to access the databas

Problem logging-load Balancer equalizer configured for high availability causes problemsProblem Description:Using PHP to develop a awards program, to call the server interface to the person to send props, but this item must be strictly controlled only sent onceThat is, the request can only be sent once, but there will always be a chance to trigger a number of cases, analysis of the background web write logs

client request to move to a fault-free node, the fault node repair, and rejoin the cluster to continue to work, This ensures uninterrupted operation of the service. The RHCs cluster type has Dr,nat,tun,fullnat, which provides different solutions for a variety of complex network environments.2. High AvailabilityHigh-availability services in RHCS high-

Although the Gmetad can be multi-layered, but the layer Gmetad all need to open gweb, or is very troublesome. If just worry about a gmetad unsafe, can be made into Gmetad high availability, but I do not know whether to think of Hadoop ha as automatic failover approach.Resource arrangement:Hdp1:gmetad, Gmond, GwebHdp2:gmetad, Gmond, GwebHdp3:gmondPurpose of configuration:HDP1 and HDP2 are Gmetad, gweb

High-availability pooled Thrift Client implementation (source code sharing), pooled thrift This article will share a highly available pooled Thrift Client and its source code implementation. You are welcome to read and use the source code (Github). At the same time, you are welcome to provide valuable comments and suggestions. I will continue to improve it. The main target readers of this article are child

Datanode nodemanager server: 192.168.1.100 192.168.1.101 192.168.1.102 Zookeeper server cluster (for namenode high-availability automatic failover): 192.168.1.100 192.168.1.101 Jobhistory server (used to record mapreduce logs): 192.168.1.1 NFS for namenode HA: 192.168.1.100 Environment deployment 1. Add the YUM repository to CDH4 1. the best way is to put the cdh4 package in the self-built yum warehou

Ansible + Corosync + Pacemaker + NFS for http High Availability Directory: (1) experiment environment(2) Preparations(3) Configure basic configurations for node1 and node2(4) deploying nfs using ansible(5) deploying corosync and pacemaker using ansible(6) Use ansible to install the crmsh Tool(7) Use crmsh to configure http High

Mysql high-availability architecture MHA construction and test failover MHA project website code. google. compmysql-master-ha 1. environment Introduction 1. host Deployment manager: 10.10.54.154master: 10.10.54.156slave1: 10.10.54.155 (slave master) Server Load balancer: 10.10.54.1572. step. first, use ssh-k Mysql high availa