# Temporal worker can not connect to temporal server

**URL:** <https://community.temporal.io/t/temporal-worker-can-not-connect-to-temporal-server/8273>\
**Category:** Server Deployment\
**Tags:** general-impl\
**Created:** [May 17, 2023, 10:26pm UTC](https://community.temporal.io/t/temporal-worker-can-not-connect-to-temporal-server/8273 "2023-05-17T22:26:49Z")\
**Posts on this page:** 8\
**Page:** 1

<div class="post-metadata">

**Author:** ![sushil\_singh](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/sushil_singh/32/3712_2.png) [@sushil\_singh](https://community.temporal.io/u/sushil_singh)\
**Post date:** [May 17, 2023, 10:26pm UTC](https://community.temporal.io/t/temporal-worker-can-not-connect-to-temporal-server/8273/1 "2023-05-17T22:26:50Z")

</div>

Hello, I am trying to start temporal services using docker container. So far, I was able to start frontend, history, matching services successfully. But when I start worker service then it throws an error like this

```auto
{"level":"warn","ts":"2023-05-17T22:12:47.804Z","msg":"error creating sdk client","service":"worker","error":"failed reaching server: last connection error: connection error: desc = \"transport: Error while dialing: dial tcp 127.0.0.1:7233: connect: connection refused\"","logging-call-at":"factory.go:114"}
{"level":"fatal","ts":"2023-05-17T22:12:47.804Z","msg":"error creating sdk client","service":"worker","error":"failed reaching server: last connection error: connection error: desc = \"transport: Error while dialing: dial tcp 127.0.0.1:7233: connect: connection refused\"","logging-call-at":"factory.go:121","stacktrace":"go.temporal.io/server/common/log.(*zapLogger).Fatal\n\t/home/builder/temporal/common/log/zap_logger.go:174\ngo.temporal.io/server/common/sdk.(*clientFactory).GetSystemClient.func1\n\t/home/builder/temporal/common/sdk/factory.go:121\nsync.(*Once).doSlow\n\t/usr/local/go/src/sync/once.go:74\nsync.(*Once).Do\n\t/usr/local/go/src/sync/once.go:65\ngo.temporal.io/server/common/sdk.(*clientFactory).GetSystemClient\n\t/home/builder/temporal/common/sdk/factory.go:108\ngo.temporal.io/server/service/worker/scanner.(*Scanner).Start\n\t/home/builder/temporal/service/worker/scanner/scanner.go:179\ngo.temporal.io/server/service/worker.(*Service).startScanner\n\t/home/builder/temporal/service/worker/service.go:504\ngo.temporal.io/server/service/worker.(*Service).Start\n\t/home/builder/temporal/service/worker/service.go:392\ngo.temporal.io/server/service/worker.ServiceLifetimeHooks.func1.1\n\t/home/builder/temporal/service/worker/fx.go:139"}

```

* * *

Here are the ports that I am using in config\_template.yaml

```auto
global:
    membership:
        maxJoinDuration: 30s

publicClient:
    hostPort: "127.0.0.1:7233"

clusterMetadata:
  enableGlobalNamespace: false
  failoverVersionIncrement: 11
  masterClusterName: "active"
  currentClusterName: "active"
  clusterInformation:
    active:
      enabled: true
      initialFailoverVersion: 2
      rpcAddress: "127.0.0.1:7233"

services:
    history:
        rpc:
            grpcPort: 7234
            membershipPort: 6934
    matching:
        rpc:
            grpcPort: 7235
            membershipPort: 6935
            bindOnLocalHost: true

    frontend:
        rpc:
            grpcPort: 7233
            membershipPort: 6933
            bindOnLocalHost: true

    worker:
        rpc:
            grpcPort: 7239
            membershipPort: 6939
            bindOnLocalHost: true

```

---

<div class="post-metadata">

**Author:** ![tihomir](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/tihomir/32/6580_2.png) [@tihomir](https://community.temporal.io/u/tihomir)\
**Post date:** [May 17, 2023, 10:46pm UTC](https://community.temporal.io/t/temporal-worker-can-not-connect-to-temporal-server/8273/2 "2023-05-17T22:46:18Z")

</div>

Can you share your full static config (generated) on worker container? It’s  
/etc/temporal/config/docker.yaml

Also which server version are you using?

Also what do you get via

`tctl cl h`

or using temporal cli:

`temporal operator cluster health`

---

<div class="post-metadata">

**Author:** ![sushil\_singh](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/sushil_singh/32/3712_2.png) [@sushil\_singh](https://community.temporal.io/u/sushil_singh)\
**Post date:** [May 17, 2023, 11:38pm UTC](https://community.temporal.io/t/temporal-worker-can-not-connect-to-temporal-server/8273/3 "2023-05-17T23:38:19Z")

</div>

> [@tihomir](#):
>
> /etc/temporal/config/docker.yaml

here is my docker.yaml file

```auto
numHistoryShards: 4

defaultStore: postgres-default

advancedVisibilityStore: es-visibility

datastores:

postgres-default:

sql:

pluginName: "postgres"

databaseName: "<>"

connectAddr: "<>"

connectProtocol: "tcp"

user: "<>"

password: "<>"

maxConns: 10

maxIdleConns: 10

maxConnLifetime: "1h"

es-visibility:

elasticsearch:

version: ""

url:

scheme: "http"

host: "<>"

username: "<>"

password: "<>"

indices:

visibility: "temporal_visibility_v1_dev"

global:

membership:

maxJoinDuration: 30s

```

I am running 1.20.3.0 server version (from docker tag)

on running temporal cluster health I get

```auto
~ $ temporal operator cluster health
Error: unable to health check "temporal.api.workflowservice.v1.WorkflowService" service: connection error: desc = "transport: Error while dialing: dial tcp 127.0.0.1:7233: connect: connection refused"
('export TEMPORAL_CLI_SHOW_STACKS=1' to see stack traces)

```

---

<div class="post-metadata">

**Author:** ![sushil\_singh](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/sushil_singh/32/3712_2.png) [@sushil\_singh](https://community.temporal.io/u/sushil_singh)\
**Post date:** [May 18, 2023, 3:52pm UTC](https://community.temporal.io/t/temporal-worker-can-not-connect-to-temporal-server/8273/4 "2023-05-18T15:52:37Z")

</div>

I think the more interesting piece of information is this one where I am defining what ports my services are working

```auto
publicClient:
    hostPort: "127.0.0.1:8933"

clusterMetadata:
  enableGlobalNamespace: false
  failoverVersionIncrement: 11
  masterClusterName: "active"
  currentClusterName: "active"
  clusterInformation:
    active:
      enabled: true
      initialFailoverVersion: 2
      rpcAddress: "127.0.0.1:7233"

services:
    history:
        rpc:
            grpcPort: 7234
            membershipPort: 6934
    matching:
        rpc:
            grpcPort: 7235
            membershipPort: 6935
            bindOnLocalHost: true

    frontend:
        rpc:
            grpcPort: 7233
            membershipPort: 6933
            bindOnLocalHost: true

    worker:
        rpc:
            grpcPort: 7239
            membershipPort: 6939
            bindOnLocalHost: true

```

---

<div class="post-metadata">

**Author:** ![sushil\_singh](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/sushil_singh/32/3712_2.png) [@sushil\_singh](https://community.temporal.io/u/sushil_singh)\
**Post date:** [May 18, 2023, 3:53pm UTC](https://community.temporal.io/t/temporal-worker-can-not-connect-to-temporal-server/8273/5 "2023-05-18T15:53:24Z")

</div>

Also, I noticed that if I change the publicClient.hostPort then worker fails to connect to the new one.

---

<div class="post-metadata">

**Author:** ![tihomir](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/tihomir/32/6580_2.png) [@tihomir](https://community.temporal.io/u/tihomir)\
**Post date:** [May 18, 2023, 4:08pm UTC](https://community.temporal.io/t/temporal-worker-can-not-connect-to-temporal-server/8273/6 "2023-05-18T16:08:11Z")

</div>

Weird, could you compare the generated static config for your worker service with whats generated with [this](https://github.com/tsurdilo/my-temporal-dockercompose/blob/main/compose-services.yml) docker compose? I upgraded it to 1.20.3 as well so server versions match. Just note it does not use ES for advanced vis but the new SQL-based advanced vis feature.

---

<div class="post-metadata">

**Author:** ![jialong](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/jialong/32/4417_2.png) [@jialong](https://community.temporal.io/u/jialong)\
**Post date:** [October 11, 2023, 11:27am UTC](https://community.temporal.io/t/temporal-worker-can-not-connect-to-temporal-server/8273/8 "2023-10-11T11:27:31Z")

</div>

I also encountered the same problem, after checking found that the dependency configuration is missing, what should I do next? How do you configure dependencies? Any suggestions or configuration examples?

```auto
{"level":"fatal","ts":"2023-10-11T18:12:27.784+0800","msg":"error getting system sdk client","service":"worker","error":"unable to create SDK client: failed reaching server: last connection error: connection error: desc = \"transport: Error while dialing dial tcp 0.0.0.0:7233: connect: connection refused\"","logging-call-at":"factory.go:107","stacktrace":"go.temporal.io/server/common/log.(*zapLogger).Fatal\n\t/data/apps/temporal-eco/temporal/common/log/zap_logger.go:150\ngo.temporal.io/server/common/sdk.(*clientFactory).GetSystemClient.func1\n\t/data/apps/temporal-eco/temporal/common/sdk/factory.go:107\nsync.(*Once).doSlow\n\t/usr/local/go/src/sync/once.go:68\nsync.(*Once).Do\n\t/usr/local/go/src/sync/once.go:59\ngo.temporal.io/server/common/sdk.(*clientFactory).GetSystemClient\n\t/data/apps/temporal-eco/temporal/common/sdk/factory.go:104\ngo.temporal.io/server/service/worker.(*Service).startScanner\n\t/data/apps/temporal-eco/temporal/service/worker/service.go:466\ngo.temporal.io/server/service/worker.(*Service).Start\n\t/data/apps/temporal-eco/temporal/service/worker/service.go:374\ngo.temporal.io/server/service/worker.ServiceLifetimeHooks.func1.1\n\t/data/apps/temporal-eco/temporal/service/worker/fx.go:155"}

```

/etc/temporal/config/docker.yaml

```auto
log:
    stdout: true
    level: info

persistence:
    numHistoryShards: 512
    defaultStore: default
    visibilityStore: visibility
# advancedVisibilityStore: es-visibility
    datastores:
        default:
            sql:
                pluginName: "mysql"
                databaseName: "temporal_eco"
                connectAddr: "..."
                connectProtocol: "tcp"
                user: "temporal_eco"
                password: "..."
                connectAttributes:
                    tx_isolation: "'READ-COMMITTED'"
                maxConns: 20
                maxIdleConns: 20
                maxConnLifetime: 1h
                tls:
                    enabled: false
                    сaFile: 
                    certFile: 
                    keyFile: 
                    enableHostVerification: false
                    serverName: 
        visibility:
            sql:
                pluginName: "mysql"
                databaseName: "temporal_eco_vis"
                connectAddr: "..."
                connectProtocol: "tcp"
                user: "temporal_eco_vis"
                password: "..."
                connectAttributes:
                    tx_isolation: "'READ-COMMITTED'"
                maxConns: 10
                maxIdleConns: 10
                maxConnLifetime: 1h
                tls:
                    enabled: false
                    сaFile: 
                    certFile: 
                    keyFile: 
                    enableHostVerification: false
                    serverName: 
        es-visibility:
            elasticsearch:
                version: v7
                url:
                    scheme: http
                    host: "..."
                username: "..."
                password: "..."
                indices:
                    visibility: "temporal-visibility-online"

global:
    membership:
        maxJoinDuration: 30s
        broadcastAddress: "..."
    authorization:
        jwtKeyProvider:
            keySourceURIs:
                - 
                - 
            refreshInterval: 1m
        permissionsClaimName: permissions
        authorizer: 
        claimMapper: 
services:
    frontend:
        rpc:
            grpcPort: 7233
            membershipPort: 6933
            bindOnIP: 0.0.0.0

    matching:
        rpc:
            grpcPort: 7235
            membershipPort: 6935
            bindOnIP: 0.0.0.0

    history:
        rpc:
            grpcPort: 7234
            membershipPort: 6934
            bindOnIP: 0.0.0.0

    worker:
        rpc:
            grpcPort: 7239
            membershipPort: 6939
            bindOnIP: 0.0.0.0

clusterMetadata:
    enableGlobalNamespace: false
    failoverVersionIncrement: 10
    masterClusterName: "active"
    currentClusterName: "active"
    clusterInformation:
        active:
            enabled: true
            initialFailoverVersion: 1
            rpcName: "frontend"
            rpcAddress: 127.0.0.1:7233

dcRedirectionPolicy:
    policy: "noop"
    toDC: ""

archival:
    history:
        state: "enabled"
        enableRead: true
        provider:
            filestore:
                fileMode: "0666"
                dirMode: "0766"
    visibility:
        state: "enabled"
        enableRead: true
        provider:
            filestore:
                fileMode: "0666"
                dirMode: "0766"

namespaceDefaults:
    archival:
        history:
            state: "disabled"
            URI: "file:///tmp/temporal_archival/development"
        visibility:
            state: "disabled"
            URI: "file:///tmp/temporal_vis_archival/development"

publicClient:
    hostPort: "0.0.0.0:7233"

dynamicConfigClient:
    filepath: "/etc/temporal/dynamicconfig/docker.yaml"
    pollInterval: "60s

```

I am running 1.17.x server version

Compared to [https://github.com/tsurdilo/my-temporal-dockercompose/blob/main/compose-services.yml](https://github.com/tsurdilo/my-temporal-dockercompose/blob/main/compose-services.yml) found less component dependencies

 ![image](https://us1.discourse-cdn.com/flex016/uploads/temporal/original/2X/a/a021f3d9fee9699084460b44387887abc99c3940.png)

---

<div class="post-metadata">

**Author:** ![jialong](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/jialong/32/4417_2.png) [@jialong](https://community.temporal.io/u/jialong)\
**Post date:** [October 11, 2023, 12:11pm UTC](https://community.temporal.io/t/temporal-worker-can-not-connect-to-temporal-server/8273/9 "2023-10-11T12:11:52Z")

</div>

Why is split deployment recommended when there are dependencies between frontend, history, matching, and worker components?