These kernel parameters may help improve the memory utilization of the system. These parameters are temporarily set for testing purposes by changing the values of the corresponding files in the /
Tag: configuration
Configuring unit query performance is not good
I am adding 3 HIVE large tables (billion-row tables). Collected all the statistics, but the performance is still poor (query time is 40 minutes). Can I set any parameters in the HIVE prompt f
Graphics interface configuration HeartBeat high available cluster
Modify the ha.cf configuration file and enable the crm function, which means that the resource configuration is handed over to the crm management
[root@node1 ~]# vim /etc/ha.d/ha.cfcrm on
HeartBeat V2 Configuration LAMP HA Description and HB_GUI Tool Instructions
Regarding the heartbeat v2 version description, using the hb_gui window management tool, there will be a separate process mgmtd to test crm, which is responsible for crm work and monitors the tcp p
High available HeartBeat installation configuration
Heartbeat (Linux-HA) working principle: The core of heartbeat consists of two parts, the heartbeat monitoring part and the resource takeover part. The heartbeat monitoring can be carried out throug
Compilation and installation configuration of HeartBeat
1. Preparations
Heartbeat 3.0.6:
#wget http://hg.linux-ha.org/heartbeat-STABLE_3_0/archive/958e11be8686.tar.bz2 Cluster Glue 1.0.12:< /p> #wget http://hg.linux-ha.org/glue/archive/0a7ad
KeepaliveD installation configuration
Go to the official website to download the version you need
https://www.keepalived.org/download.html
#Install dependent packages and environment configuration (this step It can also be
HEARTBEAT installation configuration and HTTPD high availability simple example
Notes:
1. Node name: hostname, /etc/hosts
2. ssh mutual trust
3. Node time synchronization
Three configuration files of heartbeat:
authkeys: communication key file
Configure Haproxy to implement load balancing
1. Introduction to haproxy
HAProxy is a free and open source software written in C language[1], which provides high availability, load balancing, and applications based on TCP and HTTP Progra
HEartBeat V1 installation configuration
Configuration premise:
1. Time must be synchronized, It is recommended to use ntp protocol
2.Required between nodes To communicate with each other through the host name;The name used in