docker exec mcmc-rs-md-unix0-1 sh -c "chmod a+rw /tmp/memcached0.sock"
docker exec mcmc-rs-md-unix1-1 sh -c "chmod a+rw /tmp/memcached1.sock"
docker exec mcmc-rs-md-unix2-1 sh -c "chmod a+rw /tmp/memcached2.sock"
