# service scale ```markdown Usage: docker service scale SERVICE=REPLICAS [SERVICE=REPLICAS...] Scale one or multiple services Options: --help Print usage ``` ## Examples ### Scale a service If you scale a service, you set the *desired* number of replicas. Even though the command returns directly, actual scaling of the service may take some time. For example, the following command scales the "frontend" service to 50 tasks. ```bash $ docker service scale frontend=50 frontend scaled to 50 ``` Directly afterwards, run `docker service ls`, to see the actual number of replicas ```bash $ docker service ls --filter name=frontend ID NAME REPLICAS IMAGE COMMAND 3pr5mlvu3fh9 frontend 15/50 nginx:alpine ``` You can also scale a service using the [`docker service update`](service_update.md) command. The following commands are therefore equivalent: ```bash $ docker service scale frontend=50 $ docker service update --replicas=50 frontend ``` ### Scale multiple services The `docker service scale` command allows you to set the desired number of tasks for multiple services at once. The following example scales both the backend and frontend services: ```bash $ docker service scale backend=3 frontend=5 backend scaled to 3 frontend scaled to 5 $ docker service ls ID NAME REPLICAS IMAGE COMMAND 3pr5mlvu3fh9 frontend 5/5 nginx:alpine 74nzcxxjv6fq backend 3/3 redis:3.0.6 ``` ## Related information * [service create](service_create.md) * [service inspect](service_inspect.md) * [service ls](service_ls.md) * [service rm](service_rm.md) * [service ps](service_ps.md) * [service update](service_update.md)