Function clusterSaveConfigOrDie

app/redis-6.2.6/src/cluster.c:379–384

}

void clusterSaveConfigOrDie(int do_fsync) {
    if (clusterSaveConfig(do_fsync) == -1) {
        serverLog(LL_WARNING,"Fatal: can't update cluster config file.");
        exit(1);
    }
}

/* Lock the cluster config using flock(), and leaks the file descriptor used to
 * acquire the lock so that the file will be locked forever.