Can't connect with mysql in Kubernetes

I am trying to link my backend with mysql in Kubernetes. My images of frontend and backend have worked before in Docker. I'm not sure if this problem can be related to the installation of minikube? I'm using windows 10 with minikube driver docker. I can get on the dashboard and view the status of all my objects in Kubernetes. When I try to set it up in Kubernetes I get the following error in my backend:

at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.<>c__DisplayClass18_0.b__0(DateTime giveUp)
   at Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.<>c__DisplayClass12_0`2.b__0(DbContext c, TState s)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   --- End of inner exception stack trace ---
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   at Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.Execute[TState,TResult](IExecutionStrategy strategy, TState state, Func`2 operation, Func`2 verifySucceeded)
   at Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.Execute[TState,TResult](IExecutionStrategy strategy, TState state, Func`2 operation)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.Exists(Boolean retryOnNotExists)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.Exists()
   at Microsoft.EntityFrameworkCore.Storage.RelationalDatabaseCreator.EnsureDeleted()
   at Microsoft.EntityFrameworkCore.Infrastructure.DatabaseFacade.EnsureDeleted()
   at QuizApi.Data.ProjectDataInitializer.InitializeDataAsync() in /src/QuizApi/Data/ProjectDataInitializer.cs:line 24
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
   at System.Threading.Tasks.Task.Wait()
   at QuizApi.Startup.Configure(IApplicationBuilder app, IHostingEnvironment env, ProjectDataInitializer ProjectDataInitializer) in /src/QuizApi/Startup.cs:line 107
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Microsoft.AspNetCore.Hosting.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder)
   at Microsoft.AspNetCore.Hosting.ConfigureBuilder.<>c__DisplayClass4_0.b__0(IApplicationBuilder builder)
   at Microsoft.AspNetCore.Hosting.ConventionBasedStartup.Configure(IApplicationBuilder app)
   at Microsoft.AspNetCore.Mvc.Filters.MiddlewareFilterBuilderStartupFilter.<>c__DisplayClass0_0.g__MiddlewareFilterBuilder|0(IApplicationBuilder builder)
   at Microsoft.AspNetCore.HostFilteringStartupFilter.<>c__DisplayClass0_0.b__0(IApplicationBuilder app)
   at Microsoft.AspNetCore.Hosting.WebHost.BuildApplication()
crit: Microsoft.AspNetCore.Hosting.WebHost[6]
      Application startup exception
System.AggregateException: One or more errors occurred. (An exception has been raised that is likely due to a transient failure. Consider enabling transient error resiliency by adding 'EnableRetryOnFailure()' to the 'UseMySql' call.)
 ---> System.InvalidOperationException: An exception has been raised that is likely due to a transient failure. Consider enabling transient error resiliency by adding 'EnableRetryOnFailure()' to the 'UseMySql' call.
 ---> MySql.Data.MySqlClient.MySqlException (0x80004005): Unable to connect to any of the specified MySQL hosts.
   at MySqlConnector.Core.ServerSession.ConnectAsync(ConnectionSettings cs, ILoadBalancer loadBalancer, IOBehavior ioBehavior, CancellationToken cancellationToken) in C:\projects\mysqlconnector\src\MySqlConnector\Core\ServerSession.cs:line 442
   at MySql.Data.MySqlClient.MySqlConnection.CreateSessionAsync(ConnectionPool pool, Nullable`1 ioBehavior, CancellationToken cancellationToken) in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlConnection.cs:line 657
   at MySql.Data.MySqlClient.MySqlConnection.OpenAsync(Nullable`1 ioBehavior, CancellationToken cancellationToken) in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlConnection.cs:line 312
   at MySql.Data.MySqlClient.MySqlConnection.Open() in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlConnection.cs:line 280
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.OpenDbConnection(Boolean errorsExpected)
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.Open(Boolean errorsExpected)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlRelationalConnection.Open(Boolean errorsExpected)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.<>c__DisplayClass18_0.b__0(DateTime giveUp)
   at Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.<>c__DisplayClass12_0`2.b__0(DbContext c, TState s)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   --- End of inner exception stack trace ---
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   at Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.Execute[TState,TResult](IExecutionStrategy strategy, TState state, Func`2 operation, Func`2 verifySucceeded)
   at Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.Execute[TState,TResult](IExecutionStrategy strategy, TState state, Func`2 operation)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.Exists(Boolean retryOnNotExists)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.Exists()
   at Microsoft.EntityFrameworkCore.Storage.RelationalDatabaseCreator.EnsureDeleted()
   at Microsoft.EntityFrameworkCore.Infrastructure.DatabaseFacade.EnsureDeleted()
   at QuizApi.Data.ProjectDataInitializer.InitializeDataAsync() in /src/QuizApi/Data/ProjectDataInitializer.cs:line 24
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
   at System.Threading.Tasks.Task.Wait()
   at QuizApi.Startup.Configure(IApplicationBuilder app, IHostingEnvironment env, ProjectDataInitializer ProjectDataInitializer) in /src/QuizApi/Startup.cs:line 107
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Microsoft.AspNetCore.Hosting.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder)
   at Microsoft.AspNetCore.Hosting.ConfigureBuilder.<>c__DisplayClass4_0.b__0(IApplicationBuilder builder)
   at Microsoft.AspNetCore.Hosting.ConventionBasedStartup.Configure(IApplicationBuilder app)
   at Microsoft.AspNetCore.Mvc.Filters.MiddlewareFilterBuilderStartupFilter.<>c__DisplayClass0_0.g__MiddlewareFilterBuilder|0(IApplicationBuilder builder)
   at Microsoft.AspNetCore.HostFilteringStartupFilter.<>c__DisplayClass0_0.b__0(IApplicationBuilder app)
   at Microsoft.AspNetCore.Hosting.WebHost.BuildApplication()
Unhandled exception. System.AggregateException: One or more errors occurred. (An exception has been raised that is likely due to a transient failure. Consider enabling transient error resiliency by adding 'EnableRetryOnFailure()' to the 'UseMySql' call.)
 ---> System.InvalidOperationException: An exception has been raised that is likely due to a transient failure. Consider enabling transient error resiliency by adding 'EnableRetryOnFailure()' to the 'UseMySql' call.
 ---> MySql.Data.MySqlClient.MySqlException (0x80004005): Unable to connect to any of the specified MySQL hosts.
   at MySqlConnector.Core.ServerSession.ConnectAsync(ConnectionSettings cs, ILoadBalancer loadBalancer, IOBehavior ioBehavior, CancellationToken cancellationToken) in C:\projects\mysqlconnector\src\MySqlConnector\Core\ServerSession.cs:line 442
   at MySql.Data.MySqlClient.MySqlConnection.CreateSessionAsync(ConnectionPool pool, Nullable`1 ioBehavior, CancellationToken cancellationToken) in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlConnection.cs:line 657
   at MySql.Data.MySqlClient.MySqlConnection.OpenAsync(Nullable`1 ioBehavior, CancellationToken cancellationToken) in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlConnection.cs:line 312
   at MySql.Data.MySqlClient.MySqlConnection.Open() in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlConnection.cs:line 280
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.OpenDbConnection(Boolean errorsExpected)
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.Open(Boolean errorsExpected)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlRelationalConnection.Open(Boolean errorsExpected)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.<>c__DisplayClass18_0.b__0(DateTime giveUp)
   at Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.<>c__DisplayClass12_0`2.b__0(DbContext c, TState s)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   --- End of inner exception stack trace ---
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   at Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.Execute[TState,TResult](IExecutionStrategy strategy, TState state, Func`2 operation, Func`2 verifySucceeded)
   at Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.Execute[TState,TResult](IExecutionStrategy strategy, TState state, Func`2 operation)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.Exists(Boolean retryOnNotExists)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.Exists()
   at Microsoft.EntityFrameworkCore.Storage.RelationalDatabaseCreator.EnsureDeleted()
   at Microsoft.EntityFrameworkCore.Infrastructure.DatabaseFacade.EnsureDeleted()
   at QuizApi.Data.ProjectDataInitializer.InitializeDataAsync() in /src/QuizApi/Data/ProjectDataInitializer.cs:line 24
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
   at System.Threading.Tasks.Task.Wait()
   at QuizApi.Startup.Configure(IApplicationBuilder app, IHostingEnvironment env, ProjectDataInitializer ProjectDataInitializer) in /src/QuizApi/Startup.cs:line 107
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Microsoft.AspNetCore.Hosting.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder)
   at Microsoft.AspNetCore.Hosting.ConfigureBuilder.<>c__DisplayClass4_0.b__0(IApplicationBuilder builder)
   at Microsoft.AspNetCore.Hosting.ConventionBasedStartup.Configure(IApplicationBuilder app)
   at Microsoft.AspNetCore.Mvc.Filters.MiddlewareFilterBuilderStartupFilter.<>c__DisplayClass0_0.g__MiddlewareFilterBuilder|0(IApplicationBuilder builder)
   at Microsoft.AspNetCore.HostFilteringStartupFilter.<>c__DisplayClass0_0.b__0(IApplicationBuilder app)
   at Microsoft.AspNetCore.Hosting.WebHost.BuildApplication()
   at Microsoft.AspNetCore.Hosting.WebHost.StartAsync(CancellationToken cancellationToken)
   at Microsoft.AspNetCore.Hosting.WebHostExtensions.RunAsync(IWebHost host, CancellationToken token, String startupMessage)
   at Microsoft.AspNetCore.Hosting.WebHostExtensions.RunAsync(IWebHost host, CancellationToken token, String startupMessage)
   at Microsoft.AspNetCore.Hosting.WebHostExtensions.RunAsync(IWebHost host, CancellationToken token)
   at Microsoft.AspNetCore.Hosting.WebHostExtensions.Run(IWebHost host)
   at QuizApi.Program.Main(String[] args) in /src/QuizApi/Program.cs:line 18

Backend Service:

apiVersion: v1
kind: Service
metadata:
  name: backend-service
spec:
  selector:
    app: name
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: 8889

Backend Deployment:

apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
kind: Deployment
metadata:
  name: backend-deployment
spec:
  selector:
    matchLabels:
      app: backend
  replicas: 1 
  template:
    metadata:
      labels:
        app: backend
    spec:
      containers:
      - name: backend
        image: imagename
        ports:
        - containerPort: 8889
        env:
          - name: GET_HOSTS_FROM
            value: dns

Sql pod:

# mysql-db-test
apiVersion: v1
kind: Pod
metadata:
  name: mysql-db-test
  namespace: default
  labels:
    app: mysql-db
    chart: "mysql-1.6.2"
    heritage: "Tiller"
    release: "mysql-db"
  annotations:
    "helm.sh/hook": test-success
spec:
  initContainers:
    - name: test-framework
      image: "dduportal/bats:0.4.0"
      command:
      - "bash"
      - "-c"
      - |
        set -ex
        # copy bats to tools dir
        cp -R /usr/local/libexec/ /tools/bats/
      volumeMounts:
      - mountPath: /tools
        name: tools
  containers:
    - name: mysql-db-test
      image: "mysql:5.7.28"
      command: ["/tools/bats/bats", "-t", "/tests/run.sh"]
      volumeMounts:
      - mountPath: /tests
        name: tests
        readOnly: true
      - mountPath: /tools
        name: tools
  volumes:
  - name: tests
    configMap:
      name: mysql-db-test
  - name: tools
    emptyDir: {}
  restartPolicy: Never
MANIFEST:

---
# Source: mysql/templates/secrets.yaml
apiVersion: v1
kind: Secret
metadata:
  name: mysql-db
  namespace: default
  labels:
    app: mysql-db
    chart: "mysql-1.6.2"
    release: "mysql-db"
    heritage: "Tiller"
type: Opaque
data:

  mysql-root-password:  "cm9vdA=="



  mysql-password: "T1FKV3VKSG1qNA=="
---
# Source: mysql/templates/tests/test-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: mysql-db-test
  namespace: default
  labels:
    app: mysql-db
    chart: "mysql-1.6.2"
    heritage: "Tiller"
    release: "mysql-db"
data:
  run.sh: |-
    @test "Testing MySQL Connection" {
      mysql --host=mysql-db --port=3306 -u root -proot
    }
---
# Source: mysql/templates/svc.yaml
apiVersion: v1
kind: Service
metadata:
  name: mysql-db
  namespace: default
  labels:
    app: mysql-db
    chart: "mysql-1.6.2"
    release: "mysql-db"
    heritage: "Tiller"
  annotations:
spec:
  type: ClusterIP
  ports:
  - name: mysql
    port: 3306
    targetPort: mysql
  selector:
    app: mysql-db
---
# Source: mysql/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql-db
  namespace: default
  labels:
    app: mysql-db
    chart: "mysql-1.6.2"
    release: "mysql-db"
    heritage: "Tiller"

spec:
  strategy:
    type: Recreate

  selector:
    matchLabels:
      app: mysql-db
      release: mysql-db
  template:
    metadata:
      labels:
        app: mysql-db
        release: mysql-db
    spec:
      serviceAccountName: default
      initContainers:
      - name: "remove-lost-found"
        image: "busybox:1.29.3"
        imagePullPolicy: "IfNotPresent"
        resources:
          requests:
            cpu: 10m
            memory: 10Mi

        command:  ["rm", "-fr", "/var/lib/mysql/lost+found"]
        volumeMounts:
        - name: data
          mountPath: /var/lib/mysql
      # - name: do-something
      #   image: busybox
      #   command: ['do', 'something']

      containers:
      - name: mysql-db
        image: "mysql:5.7.28"
        imagePullPolicy: "IfNotPresent"
        resources:
          requests:
            cpu: 100m
            memory: 256Mi

        env:
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-db
              key: mysql-root-password
        - name: MYSQL_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-db
              key: mysql-password
              optional: true
        - name: MYSQL_USER
          value: ""
        - name: MYSQL_DATABASE
          value: ""
        ports:
        - name: mysql
          containerPort: 3306
        livenessProbe:
          exec:
            command:
            - sh
            - -c
            - "mysqladmin ping -u root -p${MYSQL_ROOT_PASSWORD}"
          initialDelaySeconds: 30
          periodSeconds: 10
          timeoutSeconds: 5
          successThreshold: 1
          failureThreshold: 3
        readinessProbe:
          exec:
            command:
            - sh
            - -c
            - "mysqladmin ping -u root -p${MYSQL_ROOT_PASSWORD}"
          initialDelaySeconds: 5
          periodSeconds: 10
          timeoutSeconds: 1
          successThreshold: 1
          failureThreshold: 3
        volumeMounts:
        - name: data
          mountPath: /var/lib/mysql
        # - name: extras
        #   mountPath: /usr/share/extras
        #   readOnly: true

      volumes:
      - name: data
        emptyDir: {}
      # - name: extras
      #   emptyDir: {}