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As pointed out at https://github.com/coreos/etcd/issues/3843, Docker guide uses outdated version of etcd. This docker commands will pull from the latest releases.
95 lines
3.5 KiB
Markdown
95 lines
3.5 KiB
Markdown
# Running etcd under Docker
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The following guide will show you how to run etcd under Docker using the [static bootstrap process](clustering.md#static).
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## Running etcd in standalone mode
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In order to expose the etcd API to clients outside of the Docker host you'll need use the host IP address when configuring etcd.
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```
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export HostIP="192.168.12.50"
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```
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The following `docker run` command will expose the etcd client API over ports 4001 and 2379, and expose the peer port over 2380.
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This will run the latest release version of etcd. You can specify version if needed (e.g. `quay.io/coreos/etcd:v2.2.0`).
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```
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docker run -d -v /usr/share/ca-certificates/:/etc/ssl/certs -p 4001:4001 -p 2380:2380 -p 2379:2379 \
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--name etcd quay.io/coreos/etcd \
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-name etcd0 \
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-advertise-client-urls http://${HostIP}:2379,http://${HostIP}:4001 \
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-listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \
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-initial-advertise-peer-urls http://${HostIP}:2380 \
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-listen-peer-urls http://0.0.0.0:2380 \
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-initial-cluster-token etcd-cluster-1 \
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-initial-cluster etcd0=http://${HostIP}:2380 \
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-initial-cluster-state new
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```
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Configure etcd clients to use the Docker host IP and one of the listening ports from above.
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```
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etcdctl -C http://192.168.12.50:2379 member list
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```
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```
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etcdctl -C http://192.168.12.50:4001 member list
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```
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## Running a 3 node etcd cluster
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Using Docker to setup a multi-node cluster is very similar to the standalone mode configuration.
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The main difference being the value used for the `-initial-cluster` flag, which must contain the peer urls for each etcd member in the cluster.
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### etcd0
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```
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docker run -d -v /usr/share/ca-certificates/:/etc/ssl/certs -p 4001:4001 -p 2380:2380 -p 2379:2379 \
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--name etcd quay.io/coreos/etcd \
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-name etcd0 \
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-advertise-client-urls http://192.168.12.50:2379,http://192.168.12.50:4001 \
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-listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \
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-initial-advertise-peer-urls http://192.168.12.50:2380 \
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-listen-peer-urls http://0.0.0.0:2380 \
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-initial-cluster-token etcd-cluster-1 \
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-initial-cluster etcd0=http://192.168.12.50:2380,etcd1=http://192.168.12.51:2380,etcd2=http://192.168.12.52:2380 \
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-initial-cluster-state new
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```
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### etcd1
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```
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docker run -d -v /usr/share/ca-certificates/:/etc/ssl/certs -p 4001:4001 -p 2380:2380 -p 2379:2379 \
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--name etcd quay.io/coreos/etcd \
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-name etcd1 \
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-advertise-client-urls http://192.168.12.51:2379,http://192.168.12.51:4001 \
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-listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \
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-initial-advertise-peer-urls http://192.168.12.51:2380 \
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-listen-peer-urls http://0.0.0.0:2380 \
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-initial-cluster-token etcd-cluster-1 \
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-initial-cluster etcd0=http://192.168.12.50:2380,etcd1=http://192.168.12.51:2380,etcd2=http://192.168.12.52:2380 \
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-initial-cluster-state new
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```
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### etcd2
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```
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docker run -d -v /usr/share/ca-certificates/:/etc/ssl/certs -p 4001:4001 -p 2380:2380 -p 2379:2379 \
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--name etcd quay.io/coreos/etcd \
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-name etcd2 \
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-advertise-client-urls http://192.168.12.52:2379,http://192.168.12.52:4001 \
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-listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \
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-initial-advertise-peer-urls http://192.168.12.52:2380 \
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-listen-peer-urls http://0.0.0.0:2380 \
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-initial-cluster-token etcd-cluster-1 \
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-initial-cluster etcd0=http://192.168.12.50:2380,etcd1=http://192.168.12.51:2380,etcd2=http://192.168.12.52:2380 \
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-initial-cluster-state new
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```
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Once the cluster has been bootstrapped etcd clients can be configured with a list of etcd members:
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```
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etcdctl -C http://192.168.12.50:2379,http://192.168.12.51:2379,http://192.168.12.52:2379 member list
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```
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