galera cluster postgresql

Label:To the new company, the company is using RAC, I am more familiar with MySQL third-party cluster scheme Galera cluster This kind of multi-master cluster, The following is a comparison of the assumptions that I made about the RAC, and then the guesswork level that I did with the MySQL scenario. The comparison of RA

Deploying MariaDB Galera Cluster architecture in CentOS 7.4 Mariadb galera Cluster installation:Operating System: CentOS 7.4Number of clusters: 3 nodesHost information: 192.168.153.142 node1 selinux = disabled firewalld disabled192.168.153.143 node2 selinux = disabled firewalld disabled192.168.153.144 node3 selinux = d

MariaDB, as a branch of Mysql, is already widely used in open source projects, such as hot OpenStack, so the cluster deployment is essential to ensure high availability of the service while increasing the load capacity of the system.MariaDB Galera Cluster IntroductionThe MariaDB cluster is a MariaDB synchronous multi-h

. Perform MySQL security settings[Email protected] ~]# mysql_secure_installation(first set the root account password, and then always "Y" down)9. Create an account for node synchronization[Email protected] ~]# mysql-uroot-pMariaDB [(None)]> grant usage on * * to [e-mail protected] '% ' identified by ' 123456 ';MariaDB [(None)]> flush privileges;10. Modify the MySQL default character setMariaDB [(None)]> show variables like ' character% ';MariaDB [(None)]> set character_set_server = UTF8;MariaDB

Tags: des blog http os io for AR art divWhen I started working in Open Stack, I had to investigate about the HA of the Nova component. Unfortunatly the Nova configuration needed a single entry point-to-connect to the MySQL database. The solution, came to me is to use HAProxy on top of my existing Galera cluster. I. IntroductionReminder:i'll use the configuration of my previous Article:mysql multi-master rép

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 recent data is promoted to the new master node, during which MHA can avoid consistency problems by obtaining additional information from

Tags: Mariadb galera cluster Miscellaneous notesGalera Cluster Galera Cluster 1, need to download Galera-cluster branch support MARIADB support specifically 1.1需要准备三个节点；1.2 Configuring

=innodbinnodb_autoinc_lock_mode=2Wsrep_slave_threads=1Innodb_flush_log_at_trx_commit=0Wsrep_sst_method=rsync #测试用rsync, formally recommended with Xtrabackup/mariabackupWsrep_causal_reads=onWsrep_certify_nonpk=onQuery_cache_size=0Six. Start the clusterOnce the configuration is complete, start mariadb individually1. Cluster initialization node start (i.e. first node)MARIADB01 (can also be mariadb02/mariadb03)First node Start command: Mysqld_safe--wsrep-

Original http://code.oneapm.com/database/2015/07/02/mariadb-galera-cluster/MARIADB, as a branch of MySQL, is already widely used in open source projects, such as hot OpenStack, so the cluster deployment is essential to ensure high availability of the service while increasing the load capacity of the system.MariaDB Galera