Function changeReplicationId

src/replication.cpp:2267–2271

Change the current instance replication ID with a new, random one. * This will prevent successful PSYNCs between this master and other * slaves, so the command should be called when something happens that * alters the current story of the dataset. */

 * slaves, so the command should be called when something happens that
 * alters the current story of the dataset. */
void changeReplicationId(void) {
    getRandomHexChars(g_pserver->replid,CONFIG_RUN_ID_SIZE);
    g_pserver->replid[CONFIG_RUN_ID_SIZE] = '\0';
    saveMasterStatusToStorage(false);
}

/* Clear (invalidate) the secondary replication ID. This happens, for
 * example, after a full resynchronization, when we start a new replication