Set up a local cluster

For testing and development deployments, the quickest and easiest way is to set up a local cluster. For a production deployment, refer to the clustering section.

Local standalone cluster

Deploying an etcd cluster as a standalone cluster is straightforward. Start it with just one command:

$ ./etcd ... 

The started etcd member listens on localhost:2379 for client requests.

To interact with the started cluster by using etcdctl:

# use API version 3 $ export ETCDCTL_API=3 $ ./etcdctl put foo bar OK $ ./etcdctl get foo bar 

Local multi-member cluster

A Procfile at the base of this git repo is provided to easily set up a local multi-member cluster. To start a multi-member cluster go to the root of an etcd source tree and run:

# install goreman program to control Profile-based applications. $ go get github.com/mattn/goreman $ goreman -f Procfile start ... 

The started members listen on localhost:2379, localhost:22379, and localhost:32379 for client requests respectively.

To interact with the started cluster by using etcdctl:

# use API version 3 $ export ETCDCTL_API=3 $ etcdctl --write-out=table --endpoints=localhost:2379 member list +------------------+---------+--------+------------------------+------------------------+ | ID | STATUS | NAME | PEER ADDRS | CLIENT ADDRS | +------------------+---------+--------+------------------------+------------------------+ | 8211f1d0f64f3269 | started | infra1 | http://127.0.0.1:2380 | http://127.0.0.1:2379 | | 91bc3c398fb3c146 | started | infra2 | http://127.0.0.1:22380 | http://127.0.0.1:22379 | | fd422379fda50e48 | started | infra3 | http://127.0.0.1:32380 | http://127.0.0.1:32379 | +------------------+---------+--------+------------------------+------------------------+ $ etcdctl put foo bar OK 

To exercise etcd’s fault tolerance, kill a member:

# kill etcd2 $ goreman run stop etcd2 $ etcdctl put key hello OK $ etcdctl get key hello # try to get key from the killed member $ etcdctl --endpoints=localhost:22379 get key 2016/04/18 23:07:35 grpc: Conn.resetTransport failed to create client transport: connection error: desc = "transport: dial tcp 127.0.0.1:22379: getsockopt: connection refused"; Reconnecting to "localhost:22379" Error: grpc: timed out trying to connect # restart the killed member $ goreman run restart etcd2 # get the key from restarted member $ etcdctl --endpoints=localhost:22379 get key hello 

To learn more about interacting with etcd, read interacting with etcd section.