# Unable to start Elasticsearch as single node and for developing **URL:** \ **Category:** Elasticsearch\ **Created:** [January 21, 2021, 9:30am UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-as-single-node-and-for-developing/261753 "2021-01-21T09:30:17Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![first100](https://avatars.discourse-cdn.com/v4/letter/f/6a8cbe/32.png) [@first100](https://discuss.elastic.co/u/first100)\ **Post date:** [January 21, 2021, 9:30am UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-as-single-node-and-for-developing/261753/1 "2021-01-21T09:30:17Z")
Hello, i try to install elasticsearch as single node and noi i production mode i have sette in my elastisearch.yml file: ``` cluster.name: elastic-cluster node.name: elastic-cluster-node-1 path.data: C:\Elastic\data path.logs: C:\Elastic\logs http.port: 9200 discovery.seed_hosts: ["127.0.0.1", "[::1]"] cluster.initial_master_nodes: ["env-elastic-cluster-node-1"] ``` log : ```auto [2021-01-21T10:18:18,786][WARN][o.e.c.c.ClusterFormationFailureHelper] [env-elastic-cluster- node-1] master not discovered or elected yet, an election requires at least 2 nodes with ids from [UlnGHt3XRsSZxZH0YEwVJw, m0QefzOjS7Kq4H0gbly-3A, iPRCXAlVTxCgQoNedae-7w], have discovered [{env-elastic-cluster-node-1}{m0QefzOjS7Kq4H0gbly-3A} {hiLtD6xTSxmL5AL_GJ09xw}{127.0.0.1}{127.0.0.1:9300}{dilmrt} {ml.machine_memory=8589328384, xpack.installed=true, transform.node=true, ml.max_open_jobs=20}] which is not a quorum; discovery will continue using [] from hosts providers and [{env-elastic-cluster-node-1}{m0QefzOjS7Kq4H0gbly-3A} {hiLtD6xTSxmL5AL_GJ09xw}{127.0.0.1}{127.0.0.1:9300}{dilmrt}{ml.machine_memory=8589328384, xpack.installed=true, transform.node=true, ml.max_open_jobs=20}] from last-known cluster state; node term 5, last-accepted version 947 in term 5 [2021-01-21T10:25:50,051][WARN][o.e.c.c.ClusterFormationFailureHelper] [env-elastic-cluster-node-1] master not discovered or elected yet, an election requires at least 2 nodes with ids from [UlnGHt3XRsSZxZH0YEwVJw, m0QefzOjS7Kq4H0gbly-3A, iPRCXAlVTxCgQoNedae-7w], have discovered [{env-elastic-cluster-node-1}{m0QefzOjS7Kq4H0gbly-3A}{hiLtD6xTSxmL5AL_GJ09xw}{127.0.0.1}{127.0.0.1:9300}{dilmrt}{ml.machine_memory=8589328384, xpack.installed=true, transform.node=true, ml.max_open_jobs=20}] which is not a quorum; discovery will continue using [] from hosts providers and [{env-elastic-cluster-node-1}{m0QefzOjS7Kq4H0gbly-3A}{hiLtD6xTSxmL5AL_GJ09xw}{127.0.0.1}{127.0.0.1:9300}{dilmrt}{ml.machine_memory=8589328384, xpack.installed=true, transform.node=true, ml.max_open_jobs=20}] from last-known cluster state; node term 5, last-accepted version 947 in term 5 ``` ---
**Author:** ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)\ **Post date:** [January 21, 2021, 9:52am UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-as-single-node-and-for-developing/261753/2 "2021-01-21T09:52:33Z")
This node used to belong to a three-node cluster, so you can't start it up on its own any more. The simplest solution, assuming it doesn't contain any useful data, is to delete the contents of `path.data` (i.e. `C:\Elastic\data`) and try again. ---
**Author:** ![borna\_talebi](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/borna_talebi/32/76317_2.png) [@borna\_talebi](https://discuss.elastic.co/u/borna_talebi)\ **Post date:** [January 21, 2021, 10:58am UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-as-single-node-and-for-developing/261753/3 "2021-01-21T10:58:49Z")
Your node is looking for a master node named `env-elastic-cluster-node-1` which doesn't exist because your `node.name` is `elastic-cluster-node-1`. You can see this in your logs too: [2021-01-21T10:18:18,786][WARN][o.e.c.c.ClusterFormationFailureHelper] [**env-elastic-cluster- node-1**] master **not discovered** ---
**Author:** ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)\ **Post date:** [January 21, 2021, 11:15am UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-as-single-node-and-for-developing/261753/4 "2021-01-21T11:15:18Z")
> [@borna\_talebi](#): > > Your node is looking for a master node named `env-elastic-cluster-node-1` which doesn't exist This is incorrect for a number of reasons: - `... have discovered [{env-elastic-cluster-node-1}...` tells us that such a node does exist and we have discovered it, - `... [o.e.c.c.ClusterFormationFailureHelper] [env-elastic-cluster-node-1] ...` tells us that the node that's writing these logs is called `env-elastic-cluster-node-1`. - the node names are not relevant in elections anyway, nodes don't look for master nodes with particular names once the cluster has formed. I suspect the OP has hand-edited things and has not done so consistently, since the logs don't match the `elasticsearch.yml` file they shared, but it doesn't really help to jump to the wrong conclusions like that. ---
**Author:** ![borna\_talebi](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/borna_talebi/32/76317_2.png) [@borna\_talebi](https://discuss.elastic.co/u/borna_talebi)\ **Post date:** [January 21, 2021, 2:01pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-as-single-node-and-for-developing/261753/5 "2021-01-21T14:01:08Z")
You're right. My bad for not reading the logs thoroughly. You could even see the IDs for the three nodes in the logs. > [@DavidTurner](#): > > the node names are not relevant in elections anyway, nodes don't look for master nodes with particular names once the cluster has formed. So in a scenario like this if I delete the data in `Elastic\data` directory. I still need to change the `cluster.initial_master_nodes: ["env-elastic-cluster-node-1"]` to `cluster.initial_master_nodes: ["elastic-cluster-node-1"]` , right? ---
**Author:** ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)\ **Post date:** [January 21, 2021, 4:10pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-as-single-node-and-for-developing/261753/6 "2021-01-21T16:10:50Z")
Yes, see the **NOTE** on [this page](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-discovery-bootstrap-cluster.html#modules-discovery-bootstrap-cluster): > The node names used in the `cluster.initial_master_nodes` list must exactly match the `node.name` properties of the nodes. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [February 18, 2021, 4:11pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-as-single-node-and-for-developing/261753/7 "2021-02-18T16:11:02Z")
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