db2 high availability

the replication user: ' Repl_user ' @'192.168.31.190'repl_passwd'; MySQL> Show master Status; Then in DB1 MySQL set DB2 as its primary server: Mysql>Change Master tomaster_host='192.168.31.184', Master_user='Repl_user', master_password='repl_passwd', master_log_file='mysql-bin.000001', master_log_pos=436; MySQL>start slave; MySQL> Show slave status\g; Then start the slave service. At this point, the master-slave replication configurat

proxy. Of course, some webpages that can detect IP addresses can still find your IP address.Transparent proxy means that the client does not need to know the existence of a proxy server, but it still transmits the real IP address. Do not use this if you want to hide it.As we all know, the proxy IP address is the foundation of crawler, and the high-availability IP proxy is the top priority of crawler proxy.

MySQL high availability solution Cluster) 1. experiment environment I used three servers to build the mysql cluster environment. The SQL node and the data node are on the same server, and the Management node is a separate one. Cluster node1: 192.168.1.102 data node1: 192.168.1.102 Cluster node2: 192.168.1.104 data node2: 192.168.1.104 Manager node: 192.168.1.19 OS: CentOS 6.4 64-bit 2. Install mysql cluste

Build a high-availability and high-concurrency wcf cluster using nginx, nginxwcf In many cases, zookeeper is the preferred choice for Complex Balance Based on wcf, which can have better control granularity. However, zk is not very friendly to C # And is relatively difficult to implement. In actual situations, if If your load mechanism is coarse-grained, nginx ca

session server cluster, the master backup synchronization, so that it achieves a better effect, the implementation can be used redies,memcached and other cache middleware.System Architecture Diagram:conclusion : Load balancing has a minimum of 2 advantages1. Multi-point deployment, solve single point of failure problem, improve the usability of the website2. Ability to improve system performance by leveraging additional hardware resourcesEvolution of large-scale website system Architecture (iii

This article to you to share is the PHP development of high-availability high-security app back-end of the study notes, the need for friends can refer to the content of the article Source code Download Address: https://download.csdn.net/download/qq_21683643/10331534Catalogue1. Security2. Authorization Code sign algorithm3. Login Scene Access_user_token algorithm4

(192.168.27.101) db4(192.168.27.142) slave/ONLINE. Roles: reader(192.168.27.102) 3, Stop DB3 database, wait a few seconds, you can see the virtual IP switch to db4,db3 offline state; Mmm_control Show//view the situation of each node db1(192.168.27.128) master/ONLINE. Roles: db2(192.168.27.139) master/ONLINE. Roles: writer(192.168.27.111) db3(192.168.27.147) slave/HARD.OFFLINE. Roles: db4(192.168.27.142) slave/ONLINE.

In fact, to design a high-availability and high-load system, there are still some rules to follow, and its means are almost Up-scale (Sacle Up hardware expansion) or Scale Out, the two solutions will significantly improve the performance of the website in a certain stage, but soon the problem remains. This article attempts to provide a feasible "Limited" solution

Keepalived, Egnix, Tomcat high availability, high concurrent application architecture build Virtual IP address needs to be constructed in keepalived, and a nginx check file is created to detect the Nginx Server running state, and if Ngnix process is inaccessible, kill Killall keepalived process and implement V IP Drift Ngnix managed Tocmat server address, so the

Experiment System: CentOS6.6 _ x86_64 prerequisites: Firewall and selinux both disable the experiment Description: There are five hosts in this experiment, and IP Address Allocation is shown in topology Experiment Software: mariadb- Experiment System: CentOS 6.6 _ x86_64 prerequisites: Firewall and selinux both disable the experiment Description: There are five hosts in this experiment. IP Address Allocation is shown in the topology Experiment Software: mariadb- Experimental System: CentOS

Article Title: high-availability server solution for Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. In today's society, it is essential for modern enterprises to use computer systems to provide timely and reliable information and services. However, the

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 List Machine IP address Machine name 192.168.0.135 Db1 192.168.0.136 Monitor 192.168.0.20.

Tags: keepalived mysql high-availability keepalived+mysqlMySQL has many high-availability scenarios, a highly available solution that is simple to configure and useful.Experimental architecture diagram:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/57/79/wKioL1SbeqHyGF7WAAEGk3sODA4346.jpg "title=" Qq2014122

Developed every day, it is inevitable to listen to some technical forums. They are all professional words. If you have never heard of them, it is a stranger. Record them. ========================================================== ====================== High Availability: 1. Ha 2. Single-node failure is transparent to users, that is, it has no impact and is still in normal use. Extension: Vertical Scal

Large site Architecture Features: 1. High concurrency? (large number of user visits)Solution: Split system, service, message middleware, caching, concurrencyHigh Concurrency Design principlesSystem design not only need to consider the realization of business functions, but also to ensure that the system high concurrency, high

| +--------------------+ 5 rows in Set (0.00 sec) MariaDB [(none)]> show databases; #db3 +--------------------+ | Database | +--------------------+ | Information_schema | | MySQL | | info | | Performance_schema | | Test | +--------------------+ 4 rows in Set (0.00 sec) MariaDB [(none)]> show databases; #db4 +--------------------+ | Database | +--------------------+ | Information_schema | | MySQL | | info | | Performance_schema | | Test | +--------------------+ 4 rows inSet (0.00 sec) #在客户端创建就是在

=yes NM_CONTROLLED=no BOOTPROTO=dhcpvim /etc/hosts 192.168.1.10 db1 192.168.1.20 db2 192.168.1.30 db3 192.168.1.40 db42.YUM source configuration and installation of MMMrm -rf /etc/yum.repos.d/*wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repoyum -y install epel-releaseyum -y install mysql-mmm* mysql mysql-server mysql-devel3.MySQL Configuration/etc/init.d/mysqld start chkconfig --leve

writer Change configuration file /etc/mysql-mmm/mmm_agent.conf The content on DB1 such as the following Include mmm_common.conf # the ' This ' variable refers to this server. Proper operation requires # that's ' this ' server (db1 by default), as-well as all other servers, with the # Proper I P addresses set in mmm_common.conf. The content on DB2 such as the following Include mmm_common.conf # the ' This ' variable refers to this server.

personal avatar interface development9-18 Personal Center-other basic information modification9-19 Personal Center-personal password settings9-20 App Login-Login by password9-21 Login, personal center settings and other app debuggingDesign of 9-22-point liking table9-23 likes feature development9-24 Cancel the likes feature development9-25 get articles to be liked9-26 Reviews table Design9-27 Reviews feature Development9-28 Reviews List API Development Native Association queries MySQL statement

Forever2:eth0:Link/ether 00:0C:29:DB:31:F7 BRD FF:FF:FF:FF:FF:FFinet 10.0.0.52/24 BRD 10.0.0.255 Scope Global eth0Inet6 FE80::20C:29FF:FEDB:31F7/64 Scope linkValid_lft Forever Preferred_lft Forever3:eth1:Link/ether 00:0c:29:db:31:01 BRD FF:FF:FF:FF:FF:FFinet 191.168.0.201/24 BRD 191.168.0.255 Scope Global eth1Inet6 FE80::20C:29FF:FEDB:3101/64 Scope linkValid_lft Forever Preferred_lft Forever[Email protected] ~]# Curl 10.0.0.210Web1 page# After you stop the network card service or shutdown on th