dm_ svc. Conf configuration

File storage ： /etc/dm_svc.conf
LOGIN_MODE： Specify the server mode of priority login .
0： Priority connection PRIMARY Mode library ,NORMAL The pattern comes second , The final choice STANTBY Pattern ;
1： Connect only Main library ;
2： Only the spare database is connected ;
3： Priority connection STANDBY Library of patterns , PRIMARY The pattern comes second , The final choice NORMAL Pattern ;
4： Priority connection NORMAL Library of patterns ,PRIMARY The pattern comes second , The final choice STANDBY Pattern .

SWITCH_TIMES:
When connecting to the database with the service name , If no qualified library is found, the connection is successfully established , The number of times that you will try to traverse the list of Libraries in the service name . Range of valid values 1~9223372036854775807, The default value is 1, You can set at least 3 This is used to avoid frequent switching of database connection test due to the fluctuation of network card

WITCH_INTERVAL ：
Time interval for switching between servers , The unit is millisecond , Range of valid values 1~9223372036854775807. With the parameters SWITCH_TIMES、EP_SELECTOR In combination with ,EP_SELECTOR Set to 0,
wait for SWITCH_INTERVAL After that, it will switch and try to connect to the next server ,EP_SELECTOR Set to 1, wait for SWITCH_INTERVAL Will continue to try to connect to the server , until SWITCH_TIMES Switch to the next server again .

RW_SEPARATE：
Whether to enable read-write separation .0： Is not enabled ;1： Enable ;2： Enable , The standby database is selected by the client , And only the nodes configured in the service name will be selected

RW_PERCENT
Read write split distribution ratio , Range of valid values 0~100, And the proportion of the main database in the number of all things . It can be set according to the actual pressure of the primary and standby databases .

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