db2 high availability

CentOS build MysqlMMM high availability architecture CentOS Environment CentOS For Mysql 5.1 Prerequisites EPEL is installed. for detailed installation steps, see Http://blog.csdn.net/robinsonmhj/article/details/36184863 Machine ListMachine IP address machine name 192.168.0.135db119255.0.136monitor192.168.0.137db2 virtual IP function 192.168.0.138writter192.168.0.139reader192.168.0.140reader Installation

????//balanced represents load Balancing Replicating to other serversSCP mmm_common.conf [Email protected]:/etc/mysql-mmm/# scp mmm_common.conf [emailprotected]:/etc/mysql-mmm/# scp mmm_common.conf [emailprotected]:/etc/mysql-mmm/# scp mmm_common.conf [emailprotected]:/etc/mysql-mmm/ Monitor server Configuration# cd /etc/mysql-mmm/# vi mmm_mon.confping_ips 192.168.126.129,192.168.126.130,192.168.126.131,192.168.126.132 //数据库服务器地址auto_set_online 10 //自动上线时间 10秒..... Auth

that you just openedMysql> Show variables like "%hostname%";+---------------+-------+| variable_name | Value |+---------------+-------+| hostname | DB2 |+---------------+-------+1 row in Set (0.00 sec)Mysql> Show variables like "%server_id%";+---------------+-------+| variable_name | Value |+---------------+-------+| server_id | 2 |+---------------+-------+1 row in Set (0.00 sec)650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00/88/1C/wKioL1f

d_01 instance T_ 0016 data are obtained from the table. U operation 2: Using proxy -After splitting the query operation, do a proxy,app access Proxy,proxy according to the access rules can be directly routed to a specific DB instance, generate new SQL to operate the corresponding DB instance, and then through the proxy protocol operation to return the results of the operation to the app. – The advantage is that the proxy and DB instances are in a network segment, so that the time to operate th

some tend to be Database Availability. Each solution has its own advantages and disadvantages. DBA should select a high-availability solution based on the business situation of the company. More references: Read/write Splitting: Amoeba Set up the Amoeba series in MySQL under Ubuntu10 (article index) Cluster Technology: Database Cluster Technology How Gluster Ge

] ~]# vim/etc/mysql-mmm/mmm_common.conf [[emailprotected] ~]# SCP /etc/mysql-mmm/mmm_common.conf 192.168 . 94.22 :/etc/mysql-mmm/ [[emailprotected] ~]# SCP /etc/mysql-mmm/mmm_common.conf 192.168 . 94.33 :/etc/mysql-mmm/ [[emailprotected] ~]# SCP /etc/mysql-mmm/mmm_common.conf 192.168 . 94.44 :/etc/mysql-mmm/ [[emailprotected] ~]# SCP /etc/mysql-mmm/mmm_common.conf 192.168 . 94.55 :/etc/mysql-mmm/ [[email protected] ~]# vim/etc/mysql-mmm/mmm_agent.conf # Master1 for this db1, Master1 fo

Two years ago, SQL Server 2008 R2 Database Mirroring deployment, today, "Renew the front"-- Microsoft's new generation of database products SQL Server 2012 has been available for some time, whether functional or performance, compared to its early products have a great improvement. In particular, it introduces the concept and functionality of the High Availability Group (AlwaysOn Group, AG), which greatly e

IP is not transferred (you can execute the command mmm_control move_role writer db1 manual transfer).[[emailprotected] ~]# cd /etc/mysql-mmm/[[emailprotected] ~]# mmm_control show db1(192.168.113.160) master/ONLINE. Roles: //恢复在线状态 db2(192.168.113.161) master/ONLINE. Roles: writer(192.168.113.100) //虚拟IP转移 db3(192.168.113.162) slave/ONLINE. Roles: reader(192.168.113.220) db4(192.168.113.165) slave/ONLINE. Roles: reader(192.168.113.210)At this po

from: http://m.csdn.net/article_pt.html?arcid=2823943Apache HBase is a database for online services that is native to the features of Hadoop, making it an obvious choice for applications that are based on the scalability and flexibility of Hadoop for data processing.In the Hortonworks data platform (HDP http://zh.hortonworks.com/hdp/) 2.2, the high availability of hbase has evolved to ensure that the uptime

Label:Application analysis of MySQL high-availability architecture at the business levelhttp://mp.weixin.qq.com/s?__biz=MzAxNjAzMTQyMA==mid=208312443idx=1sn= F9a0d03dd9a1cf3b3575c0241291e421scene=22srcid=selu5tmzumklzwvbihzm#rd http://mp.weixin.qq.com/s?__biz=MzAxNjAzMTQyMA==mid=208312443idx=1sn= f9a0d03dd9a1cf3b3575c0241291e421scene=22srcid=selu5tmzumklzwvbihzm#rd2015-09-07 Douglas fir programmer log ↑↑↑

. Roles: writer(192.168.100.170)db2(192.168.100.166) master/ONLINE. Roles:db3(192.168.100.159) slave/ONLINE. Roles: reader(192.168.100.171)db4(192.168.100.158) slave/ONLINE. Roles: reader(192.168.100.171)2, check all options, need to be OKmmm_control checks all3. Use the following command to manually switch the master servermmm_control move_role writer db2Seven, fault testing1, stop the M1 Server MARIADB service, check the server status, see if M2 pre

things more practical and safer. Later I thought about it and made some changes to some conditions and behaviors in the script. After modification, I finally dared to let my friends use this set of things. Main purpose: The dual-master architecture and keepalived are used to solve single point of failure (spof) of the master database in the MySQL master-slave structure. specific query statements are used to provide more fine-grained and more realistic judgment on the

MySQL's high-availability scenarios typically include the following:Keepalived+ Dual master, Mha,mmm,heartbeat+drbd,pxc,galera ClusterThe more commonly used are keepalived+, MHA and PXC.For small companies, it is generally recommended to use keepalived+ dual master, simple.Let's deploy it here.Configure the Environment:Role host IP host name operating system version software versionVIP 192.168.244.10Master1

CentOS 6 High Availability service Heartbeat v3 installation and configuration System: CentOS 6.6 x86_64 (two virtual machines)Security: SElinux disabledNetwork: Business Network + heartbeat NetworkHeartbeat version: v3.0.6Cluster Gule version: v1.0.12 Resource Agents version: v3.9.6 Package installation method: source code Installation Heartbeat 3.0 and later are composed of three parts: gule, heartbeat, a

Label:17th. Ideas and solutions for high-availability design Objective: The database system is the core part of an application system, if the whole system availability is guaranteed, the database system can not have any problems. For an enterprise-class system, the availability of a database system is particularly impo

lb_kind DR persistence_timeout 50 protocol TCP real_server 192.168.4.5 3306 { weight 1notify_down/etc/keepalived/bin/mysql.sh"//If MySQL is down, execute the contents of the script. TCP_CHECK { connect_timeout 3 nb_get_retry 3 delay_before_retry 3 connect_port 3306 //监控健康状态端口。 } }}3)把主服务器上的配置文件scp一份到从库上，只需修改MASTER/优先级和real server的ip即可。并把nopreempt这一行去掉，这个一般只配置在优先级大的上面。4)启服务[[emailprotected] ~]# sys

=339;start slave;show slave status; Slave_io_running:yes Slave_sql_running:yesConfiguring Master-slave replicationchange master to master_host=‘192.168.100.100‘,master_user=‘replication‘,master_password=‘123456‘,master_log_file=‘mysql_bin.000002‘,master_log_pos=339;start slave;show slave status; Slave_IO_Running: Yes Slave_SQL_Running: YesInstall MMMInstall-----on all servers Note that the Epel source should be configured wellyum -y install mysql-mmm*Configure MMMCd/etc/mysql-mmm/vi mmm_co

Frequently Asked Questions about High Availability of SQLServer every time we talk about high availability of SQLServer. Many DBAs, especially SQLServerDBA, feel a pain in their hearts: Because we all think that SQL Server cannot or is difficult to implement SQL Server. Yes Frequently Asked Questions about

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

MySQL performance tuning and Architecture Design-the idea and solution of the High Availability design in Chapter 17th, mysql Tuning Chapter 1 High Availability design ideas and solutions Preface: The database system is the core part of an application system. To ensure the overall