![]() The individual parameters set here are presented in the next section. The commands generate a server cluster monitor within MaxScale and set it up for automatic cluster management. These items could have been added to the configuration file instead. The following script demonstrates MaxScale’s runtime configuration management. Process: 4032 ExecStartPre=/usr/bin/install -d /var/run/maxscale -o maxscale -g maxscale (code=exited, status=0/SUCCESS) Process: 4035 ExecStart=/usr/bin/maxscale (code=exited, status=0/SUCCESS) Loaded: loaded (/usr/lib/systemd/system/rvice enabled vendor preset: disabled)Īctive: active (running) since Fri 00:24:21 GMT 5s ago rvice - MariaDB MaxScale Database Proxy.Once configuration is complete, start MaxScale: ~]# systemctl enable rviceĬreated symlink from /etc/systemd/system//rvice to ~]# systemctl is-enabled ~]# systemctl start ~]# systemctl status rvice For more information, check maxkeys/maxpasswd. An encrypted password can be generated with the maxkeys and maxpasswd utilities. ![]() #: basic configuration - /etc/maxscale.cnfĪbove, the password for the service user is encrypted. #: checking the ~]# maxscale -version-full After downloading, install the packages and configure MaxScale as presented below. If you are running a Debian based Linux distribution, check here for the best MaxScale package for your system. In these examples we are running CentOS 7.2. #: slave01, async & semisync replicationīox03.vm.network "private_network", ip: "192.168.50.13", virtualbox_intnet: "XY" Don't touch unless you know what you're doing! Here is the vagrantfile used for the examples of this blog: # -*- mode: ruby maxscale222 In this blog post, we present an example setup and experiment with the new features. The cluster master may be replicating from an external master, in which case a promoted master server is instructed to replicate from the external master. Additionally, failover and switchover expect the topology to be one-layer deep. All three operations require GTID-based replication and are intended for simple single-master replication topologies. This module replaces the old mysqlmonitor (MaxScale is still backwards compatible with the old name). ![]() These features are implemented in the mariadbmonitor-module. Rejoin can be set to automatic or activated manually. Switchover must be activated manually through MaxAdmin, MaxCtrl or the REST interface. This makes MaxScale a natural choice for controlling failover and similar features.įailover for the master-slave cluster can and often should be set to activate automatically. MaxScale also monitors the servers, so it will quickly notice any changes in server status or replication topology. It sits between client applications and the database servers, routing client queries and server responses. MariaDB MaxScale is an advanced database proxy for MariaDB database servers.
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