Go to my.cnf for each of them and hash bind_address variable: multi_msb_mysql-5_7_23]$ ps -ef | grep mysqld_safe Next step is to modify the configuration of the newly created instances. Here is the summary of our MySQL instances in the host: multi_msb_mysql-5_7_23]$ cat default_connection.json It is necessary to configure each node appropriately to make them listen to all available IP addresses. $ make_multiple_sandbox mysql-5.7.23-linux-glibc2.12-x86_64.tar.gzīy default, MySQL Sandbox creates mysql instances that listen to 127.0.0.1. We created our MySQL instances using the following commands: $ su - sandbox In this example, we have 3 MySQL instances on a single host created with MySQL Sandbox:ĬlusterControl monitoring multiple instances on same host Each MySQL instance must be treated as a single entity per server group. Monitoring multiple MySQL instances on a machine is still possible with ClusterControl with a simple workaround. It usually resides under /etc/ and /etc/mysql. As such, automatic recovery for node/cluster won’t work.Ĭonfiguration management – ClusterControl provisions the standard MySQL configuration directory. With multiple MySQL instances, this is a false positive approach. Process management – ClusterControl uses the standard ‘pgrep -f mysqld_safe’ to check if MySQL is running on that host. With the above assumptions, the following ClusterControl features do not work for a host with multiple instances:īackup – Percona Xtrabackup does not support multiple instances per host and mysqldump executed by ClusterControl only connects to the default socket. In an environment with multiple instances per host, you should expect redundant host statistics since it monitors the same host multiple times. It keeps monitoring the host statistics e.g CPU/RAM/disk/network for each MySQL instance individually.
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