Etcd - Revision history

Christoph: /* External links */

2023-01-19T17:30:20Z

‎External links

Christoph: /* Create a single-node etcd cluster running in Docker */

2021-09-09T07:08:25Z

‎Create a single-node etcd cluster running in Docker

Christoph: /* Create a single-node etcd cluster running in Docker */

2020-05-05T21:37:14Z

‎Create a single-node etcd cluster running in Docker

Christoph at 18:55, 5 May 2020

2020-05-05T18:55:13Z

Christoph: Created page with "'''etcd''' is a strongly consistent, distributed key-value store that provides a reliable way to store data that needs to be accessed by a distributed system or cluster of mac..."

2020-05-05T18:45:36Z

Created page with "'''etcd''' is a strongly consistent, distributed key-value store that provides a reliable way to store data that needs to be accessed by a distributed system or cluster of mac..."

New page

'''etcd''' is a strongly consistent, distributed key-value store that provides a reliable way to store data that needs to be accessed by a distributed system or cluster of machines. It gracefully handles leader elections during network partitions and can tolerate machine failure, even in the leader node.

==Create a single-node etcd cluster running in Docker==

* Start up a [[Docker]] container for the single-node etcd cluster:
<pre>
$ export DATA_DIR="etcd-data"
$ export NODE1=10.x.x.x # <= You host IP
$ REGISTRY=quay.io/coreos/etcd
$ docker volume create --name etcd-data
$ docker run \
-p 2379:2379 \
-p 2380:2380 \
--volume=${DATA_DIR}:/etcd-data \
--name etcd ${REGISTRY}:latest \
/usr/local/bin/etcd \
--data-dir=/etcd-data --name node1 \
--initial-advertise-peer-urls http://${NODE1}:2380 --listen-peer-urls http://0.0.0.0:2380 \
--advertise-client-urls http://${NODE1}:2379 --listen-client-urls http://0.0.0.0:2379 \
--initial-cluster node1=http://${NODE1}:2380
</pre>

* In a different shell:
<pre>
$ go get github.com/coreos/etcd/etcdctl

$ ~/go/bin/etcdctl --endpoints=http://${NODE1}:2379 member list
5ef3db6412b1adfb, started, node1, http://10.x.x.x:2380, http://10.x.x.x:2379, false

$ ~/go/bin/etcdctl --endpoints=http://${NODE1}:2379 -w table member list
+------------------+---------+-------+----------------------+----------------------+------------+
| ID | STATUS | NAME | PEER ADDRS | CLIENT ADDRS | IS LEARNER |
+------------------+---------+-------+----------------------+----------------------+------------+
| 5ef3db6412b1adfb | started | node1 | http://10.x.x.x:2380 | http://10.x.x.x:2379 | false |
+------------------+---------+-------+----------------------+----------------------+------------+

$ ~/go/bin/etcdctl --endpoints=http://${NODE1}:2379 -w table endpoint --cluster status
+----------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| ENDPOINT | ID | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS |
+----------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| http://10.x.x.x:2379 | 5ef3db6412b1adfb | 3.3.8 | 20 kB | true | false | 4 | 9 | 0 | |
+----------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+

$ ~/go/bin/etcdctl --endpoints=http://${NODE1}:2379 put foo1 bar1
$ ~/go/bin/etcdctl --endpoints=http://${NODE1}:2379 put get foo1
</pre>

==External links==
* [https://etcd.io/ Official website]

[[Category:Technical and Specialized Skills]]
[[Category:DevOps]]
[[Category:Linux Command Line Tools]]

@@ Line 65: / Line 65: @@
 ==External links==
 * [https://etcd.io/ Official website]
 [[Category:Technical and Specialized Skills]]
 [[Category:DevOps]]
 [[Category:Linux Command Line Tools]]

@@ Line 6: / Line 6: @@
 <pre>
 $ export DATA_DIR="etcd-data"
-$ export NODE1=10.x.x.x  # <= You host IP
+$ export NODE1=10.x.x.x  # <= Your host IP
 $ REGISTRY=quay.io/coreos/etcd
 $ docker volume create --name etcd-data

@@ Line 23: / Line 23: @@
 * In a different shell:
 <pre>
 $ go get github.com/coreos/etcd/etcdctl

@@ Line 44: / Line 44: @@
 $ ~/go/bin/etcdctl --endpoints=http://${NODE1}:2379 put foo1 bar1
 $ ~/go/bin/etcdctl --endpoints=http://${NODE1}:2379 put get foo1
 </pre>