# Sens-backend service is failing to start with error

**URL:** <https://discourse.sensu.io/t/sens-backend-service-is-failing-to-start-with-error/3001>\
**Category:** Sensu Go\
**Tags:** sensu-go, sensu-go-release\
**Created:** [October 13, 2022, 6:39am UTC](https://discourse.sensu.io/t/sens-backend-service-is-failing-to-start-with-error/3001 "2022-10-13T06:39:05Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Pradeep\_Kumar](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.sensu.io/pradeep_kumar/32/766_2.png) [@Pradeep\_Kumar](https://discourse.sensu.io/u/Pradeep_Kumar)\
**Post date:** [October 13, 2022, 6:39am UTC](https://discourse.sensu.io/t/sens-backend-service-is-failing-to-start-with-error/3001/1 "2022-10-13T06:39:05Z")

</div>

backend.yaml

```auto
cat /etc/sensu/backend.yml

state-dir: "/var/lib/sensu"
api-url: "http://localhost:8080"

insecure-skip-tls-verify: true
log-level: "error"
etcd-advertise-client-urls: "http://xxx:2379"
etcd-listen-client-urls: "http://xxx:2379"
etcd-listen-peer-urls: "http://xxx:2380"
etcd-initial-advertise-peer-urls: "http://xxx:2380"
etcd-initial-cluster: "sensu-go1=http://xxx:2380"
etcd-initial-cluster-state: "new"
etcd-initial-cluster-token: "sensu"
etcd-name: "sensu-go1"

```

when i start the service im seeing below error

```auto
root@localhost:~/sensu-go/bin# ./sensu-backend -c /etc/sensu/backend.yml start
{"component":"ent-store","error":"error migrating database to latest version: failed to connect to `host=/tmp user=root database=`: dial error (dial unix /tmp/.s.PGSQL.5432: connect: no such file or directory)","level":"error","msg":"error opening postgres store, retrying...","time":"2022-10-13T06:34:15Z"}

```

root@localhost:~/sensu-go/bin# sensu-backend version  
sensu-backend version 6.8.2+ce

root@localhost:~/sensu-go/bin# etcd --version  
etcd Version: 3.5.5  
Git SHA: 19002cfc6  
Go Version: go1.19.2  
Go OS/Arch: linux/amd64

---

<div class="post-metadata">

**Author:** ![aaronsachs](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.sensu.io/aaronsachs/32/47_2.png) [@aaronsachs](https://discourse.sensu.io/u/aaronsachs)\
**Post date:** [October 13, 2022, 5:54pm UTC](https://discourse.sensu.io/t/sens-backend-service-is-failing-to-start-with-error/3001/2 "2022-10-13T17:54:32Z")

</div>

Hmmmm, did you apply a postgres config to your cluster? That looks like Sensu’s trying to open up a connection to postgres and cannot.

---

<div class="post-metadata">

**Author:** ![Pradeep\_Kumar](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.sensu.io/pradeep_kumar/32/766_2.png) [@Pradeep\_Kumar](https://discourse.sensu.io/u/Pradeep_Kumar)\
**Post date:** [October 25, 2022, 5:22am UTC](https://discourse.sensu.io/t/sens-backend-service-is-failing-to-start-with-error/3001/3 "2022-10-25T05:22:37Z")

</div>

I built the OSS executable with the main branch… Later I changed to v\*._._ branch the issue got resolved.