postgresql high availability

CentOS6.6 install heartbeat for High Availability I recently learned about the High Availability Technology in linux under the guidance of a teacher, using the heartbeat software to achieve high availability of Server clusters. Be

Keepalived Reality Web dual standby (high availability) by implementing keepalived high availability on both master and standby schedulers, the single point of failure of the scheduler is resolved The LVS is configured on the Master and Standby scheduler , and the main scheduler works normally When the main scheduler

The company has three physical servers, installed windows server 2008 R2, and enabled Hyper-v. Each of the three physical servers has three virtual machines (9 in total ). The current environment does not support high availability of virtual machines. We plan to configure a windows Cluster to support high availability

1. keepAlived + Mysql uses KeepAlived to implement high-availability MYSQL_HA cluster environment. MYSQL is a master-master synchronous replication relationship to ensure data consistency on the MYSQL server. KeepAlived is used to provide virtual IP addresses, keepAlived is used for Fault Monitoring, enabling automatic failover when Mysql fails. The environment topology is as follows :? Mysq 1. in the highl

1. Introduction to Keepalived Keepalived is an important underlying tool that provides HA. Its initial role was to provide HA functions for ipvs and a service software that can provide vrrp health-check functions, it can be used only to provide a floating vip (vrrp virtual routing function), which can easily implement a Hot Standby High Availability function. At the same time, we can also use the LVS + Keep

Mysql high availability solution MHA introduction bitsCN.com Introduction to mysql high availability solution MHA Overview MHA is a MySQL Failover Solution written by MySQL daiu in Japan using Perl to ensure high availability

Lab requirement: MySQ Experimental requirements: Configure mysql-mmm to achieve mysql High Availability MySQL-MMM to achieve MySQL High Availability http://www.linuxidc.com/Linux/2014-02/96994.htm MySQ Lab requirement: Configure mysql-mmm to achieve high

In the previous deployment process, heartbeat was successfully deployed and configured, and the high availability of VIPs between two nodes was achieved, where the high availability of the HTTPD service was configured and implemented.First, install ApacheBoth heartbeat node servers stop the heartbeat service first./etc

Keepalived achieves high Nginx availability Keepalived achieves high Nginx availability 1. Install keepalived using yum Yum install keepalived-y 2. modify the configuration file keepalived. conf. Master server configuration file Global_defs {Router_id NodeA}Vrrp_script check_run {Script "/etc/keepalived/check_nginx.sh"

Build a high-availability cluster in CentOS 7 This article uses two machines to implement dual-collector for high-availability clusters. the IP address of the Host Name node1 is 192.168.123168, And the IP address of the Host Name node2 is 192.168.123169.1. Install cluster Software Software pcs, pacemaker, corosync, f

MySQL High Availability Scenario MHA Introduction Overview MHA is a Japanese MySQL Daniel written in Perl a set of MySQL failover scheme to ensure the high availability of the database system. In the time of downtime (typically 10-30 seconds), complete failover, deployment MHA, to avoid master-slave consistency issues,

First of all, for the theory of literacy, you need to understand ha what it is and whether it is similar to other high availability, not much to say. You can look down.Juniper-netscreen os ha High availability configuration HA NetScreen Company's NSRP agreement is Juniper company based on the VRRP protoco

centos_6.7 High-Availability Service heartbeat_v3.0.4 installation and configurationThere are 2 main types of cluster systems:Highly available (high availability) HA clusters: using hardware and software such as Heartbeat/keepalived, also known as "dual-machine hot standby", "dual-machine interoperability", "dual-machi

: Simple to implement Maximum efficiency without the need for inter-threading collaboration Easiest to implement sequential processing of messages within each partition Disadvantages: Each kafkaconsumer maintains a TCP connection to the cluster The number of threads cannot exceed partition The amount of data pulled by each batch becomes smaller and has a certain impact on throughput 2. Decoupling, 1 consumer threads are responsible for pulling messages

Common Features of keepalived High AvailabilityKeepalived is used to detect the status of a web server. If a web server crashes or fails to work, Keepalived will detect it and remove the faulty web server from the system, when the web server is working normally, Keepalived automatically adds the web server to the server group. All these tasks are completed automatically without manual interference. All you need to do is to manually repair the faulty w

Tags: keepalived high-availability MySQL master-slave replicationDescription: Requires 3 nodes, master node (202.207.178.6), slave node (202.207.178.7), test node (202.207.178.8), virtual address: 202.207.178.4. Configure the MySQL database master-slave replication, and use keepalived to achieve high availability, can

Tags: mysql high availability manager Master slave MHA galera clusterMha:master HA; is an open source MySQL high-availability program that provides automating master failover functionality for MySQL master-slave replication architecture. MHA when monitoring the failure of the master node, the slave node with the most r

Tags: working principle server database MySQL pros and consObjectiveMMM (master-master replication managerfor mysql,mysql primary master Replication Manager) is a flexible script that is based on Perl and is used to monitor and fail-over Mysql replication. And can manage the configuration of MySQL Master-master replication (only one node is writable at the same time).MMMAdvantages and DisadvantagesAdvantages: High

Keepalived+memcached Primary master replication High-availability Description:The client connects to the VIP address between two servers if the backend server fails to automatically switch.KeepAlive principle: 1. Fault detection:The role of keepalived is to detect whether the state of the memcached server is normal.2. Master-Slave Switching:Keepalived The VIP can be moved from the primary server to the slav

Tags: ha high availability keepalived read/write separation MHAExplore MySQL's high-availability architecture MHA (5)-----build MySQL High-availability series (total 9 articles)The previous article introduced the AB copy operation