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hashicorp / consul-k8s

First-class support for Consul Service Mesh on Kubernetes
https://www.consul.io/docs/k8s
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Unable to deploy nginx to consul-k8s when connect inject is enabled. #4241

Open GeorgeJose7 opened 1 month ago

GeorgeJose7 commented 1 month ago

Overview of the Issue

I am try to deploy consul in a digital ocean Kubernetes cluster using helm. Once consul is up and running I am trying to deploy nginx into the cluster. The pods for nginx are not starting up. and the follow information was found in the logs. 

Defaulted container "consul-dataplane" out of: consul-dataplane, nginx-deployment, consul-connect-inject-init (init)
Error from server (BadRequest): container "consul-dataplane" in pod "nginx-deployment-68d9dc9859-dgqbj" is waiting to start: PodInitializing

How can I resolve this issue?

Kubernetes information

Provider : Digital ocean version : 1.30.2-do.0

Consul helm Chart

chart information

annotations:
  artifacthub.io/images: |
    - name: consul
      image: hashicorp/consul:1.19.1
    - name: consul-k8s-control-plane
      image: hashicorp/consul-k8s-control-plane:1.5.1
    - name: consul-dataplane
      image: hashicorp/consul-dataplane:1.5.1
    - name: envoy
      image: envoyproxy/envoy:v1.25.11
  artifacthub.io/license: MPL-2.0
  artifacthub.io/links: |
    - name: Documentation
      url: https://www.consul.io/docs/k8s
    - name: hashicorp/consul
      url: https://github.com/hashicorp/consul
    - name: hashicorp/consul-k8s
      url: https://github.com/hashicorp/consul-k8s
  artifacthub.io/prerelease: "false"
  artifacthub.io/signKey: |
    fingerprint: C874011F0AB405110D02105534365D9472D7468F
    url: https://keybase.io/hashicorp/pgp_keys.asc
apiVersion: v2
appVersion: 1.19.1
description: Official HashiCorp Consul Chart
home: https://www.consul.io
icon: https://raw.githubusercontent.com/hashicorp/consul-k8s/main/assets/icon.png
kubeVersion: '>=1.22.0-0'
name: consul
sources:
- https://github.com/hashicorp/consul
- https://github.com/hashicorp/consul-k8s
version: 1.5.1

Helm chart values

global:
  name: consul
  enabled: true
  datacenter: dc1
  tls:
    enabled: true
    enableAutoEncrypt: true
    verify: true
  acls: 
    manageSystemACLs: true
    gossipEncryption:
      secretName: consul-bootstrap-secret
      secretKey: token

# Disable the expose server in production.
server:
  replicas: 1
  bootstrapExpect: 1
  exposeService:
    enabled: false
  #  type: LoadBalancer
  storage: 5Gi
  storageClass: do-block-storage
  resources:
    requests:
      memory: "100Mi"
      cpu: "100m"
    limits:
      memory: "100Mi"
      cpu: "100m"

connectInject:
  enabled: true
  default: true
  k8sAllowNamespaces: ['*']
#  aclInjectToken:
#    secretName: consul-bootstrap-secret
#    secretKey: token
  apiGateway:
    managedGatewayClass:
      serviceType: LoadBalancer

meshGateway:
  enabled: false
  replicas: 1

controller:
  enabled: true

ui:
  enabled: true
  service:
    enabled: true
    type: LoadBalancer

terminatingGateways:
  enabled: true

API Gateway

apiVersion: gateway.networking.k8s.io/v1beta1
# The Gateway is the main infrastructure resource that links API gateway components.
kind: Gateway
metadata:
 name: api-gateway
 namespace: consul
spec:
 gatewayClassName: consul
 # Configures the listener that is bound to the gateway's address.
 listeners:
   # Defines the listener protocol (HTTP, HTTPS, or TCP)
 - protocol: HTTPS
   port: 443
   name: https
   allowedRoutes:
     namespaces:
       from: All
   tls:
     # Defines the certificate to use for the HTTPS listener.
     certificateRefs:
       - name: consul-server-cert
         kind: Secret

Nginx manifest

# Deployment
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: nginx-deployment
  name: nginx-deployment
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx-deployment
  template:
    metadata:
      labels:
        app: nginx-deployment
      annotations:
        'consul.hashicorp.com/connect-inject': 'true'
    spec:
      serviceAccountName: nginx-sa
      containers:
      - image: k8s.gcr.io/ingressconformance/echoserver:v0.0.1
        name: nginx-deployment
        env:
        - name: SERVICE_NAME
          value: nginx-deployment
        - name: POD_NAME
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        ports:
        - containerPort: 80
---
# service
apiVersion: v1
kind: Service
metadata:
  labels:
    app: nginx-service
  name: nginx-service
  namespace: default
spec:
  ports:
  - port: 443
    protocol: TCP
    targetPort: 80
  selector:
    app: nginx-deployment
---
# service intention
apiVersion: consul.hashicorp.com/v1alpha1
kind: ServiceIntentions
metadata:
  name: api-gateway 
spec:
  destination:
    name: nginx-service
  sources:
    - name: api-gateway
      action: allow  
---
# service defaults
apiVersion: consul.hashicorp.com/v1alpha1
kind: ServiceDefaults
metadata:
  name: nginx-service-default
  namespace: default
spec:
  protocol: http
---
# service account
apiVersion: v1
kind: ServiceAccount
metadata:
  name: nginx-sa
  namespace: default
automountServiceAccountToken: true
---
# http route
apiVersion: gateway.networking.k8s.io/v1beta1
kind: HTTPRoute
metadata:
  name: route-echo
  namespace: default
spec:
  parentRefs:
  - name: api-gateway
    namespace: consul
  rules:
  - matches:
    - path:
        type: PathPrefix
        value: /echo
    backendRefs:
    - kind: Service
      name: nginx-service
blake commented 1 month ago

Hi @GeorgeJose7, you will need to provide additional information to help us determine why the consul-dataplane container is not starting. Can you please review the https://kubernetes.io/docs/tasks/debug/debug-application/debug-pods/#debugging-pods and provide additional output from kubectl describe for the nginx-deployment pod?

GeorgeJose7 commented 1 month ago

@blake

This is the output of kubectl describe command

Name:             nginx-deployment-68d9dc9859-8dq6p
Namespace:        default
Priority:         0
Service Account:  nginx-sa
Node:             pool-03ffzmlif-bao7d/10.114.0.2
Start Time:       Tue, 13 Aug 2024 15:48:24 +0200
Labels:           app=nginx-deployment
                  consul.hashicorp.com/connect-inject-managed-by=consul-k8s-endpoints-controller
                  consul.hashicorp.com/connect-inject-status=injected
                  pod-template-hash=68d9dc9859
Annotations:      consul.hashicorp.com/connect-inject: true
                  consul.hashicorp.com/connect-inject-status: injected
                  consul.hashicorp.com/connect-k8s-version: v1.5.1
                  consul.hashicorp.com/connect-service-port: 80
                  consul.hashicorp.com/consul-k8s-version: v1.5.1
                  consul.hashicorp.com/original-pod:
                    {"kind":"Pod","apiVersion":"v1","metadata":{"generateName":"nginx-deployment-68d9dc9859-","namespace":"default","creationTimestamp":null,"...
                  consul.hashicorp.com/transparent-proxy-status: enabled
Status:           Pending
IP:               10.244.1.75
IPs:
  IP:           10.244.1.75
Controlled By:  ReplicaSet/nginx-deployment-68d9dc9859
Init Containers:
  consul-connect-inject-init:
    Container ID:  containerd://847fb6ce241d0d1527a79c2626527f620cd2c3974edc4379013347a923df4d0d
    Image:         hashicorp/consul-k8s-control-plane:1.5.1
    Image ID:      docker.io/hashicorp/consul-k8s-control-plane@sha256:eb342fa3f36093d3d30a1ff903595d8c1a19beaf8f4780899580494873467ad3
    Port:          <none>
    Host Port:     <none>
    Command:
      /bin/sh
      -ec
      consul-k8s-control-plane connect-init -pod-name=${POD_NAME} -pod-namespace=${POD_NAMESPACE} \
        -log-level=info \
        -log-json=false \
        -service-account-name="nginx-sa" \
        -service-name="" \
    State:          Waiting
      Reason:       CrashLoopBackOff
    Last State:     Terminated
      Reason:       Error
      Exit Code:    1
      Started:      Tue, 13 Aug 2024 15:49:50 +0200
      Finished:     Tue, 13 Aug 2024 15:49:51 +0200
    Ready:          False
    Restart Count:  4
    Limits:
      cpu:     50m
      memory:  150Mi
    Requests:
      cpu:     50m
      memory:  25Mi
    Environment:
      POD_NAME:                        nginx-deployment-68d9dc9859-8dq6p (v1:metadata.name)
      POD_NAMESPACE:                   default (v1:metadata.namespace)
      NODE_NAME:                        (v1:spec.nodeName)
      CONSUL_ADDRESSES:                consul-server.consul.svc
      CONSUL_GRPC_PORT:                8502
      CONSUL_HTTP_PORT:                8501
      CONSUL_API_TIMEOUT:              5m0s
      CONSUL_NODE_NAME:                $(NODE_NAME)-virtual
      CONSUL_USE_TLS:                  true
      CONSUL_CACERT_PEM:               -----BEGIN CERTIFICATE-----
                                       MIIDQjCCAuigAwIBAgIUQfrb4XmWe283WZ9ntaFiuOqs9C4wCgYIKoZIzj0EAwIw
                                       gZExCzAJBgNVBAYTAlVTMQswCQYDVQQIEwJDQTEWMBQGA1UEBxMNU2FuIEZyYW5j
                                       aXNjbzEaMBgGA1UECRMRMTAxIFNlY29uZCBTdHJlZXQxDjAMBgNVBBETBTk0MTA1
                                       MRcwFQYDVQQKEw5IYXNoaUNvcnAgSW5jLjEYMBYGA1UEAxMPQ29uc3VsIEFnZW50
                                       IENBMB4XDTI0MDgxMzEzNDE0NFoXDTM0MDgxMTEzNDI0NFowgZExCzAJBgNVBAYT
                                       AlVTMQswCQYDVQQIEwJDQTEWMBQGA1UEBxMNU2FuIEZyYW5jaXNjbzEaMBgGA1UE
                                       CRMRMTAxIFNlY29uZCBTdHJlZXQxDjAMBgNVBBETBTk0MTA1MRcwFQYDVQQKEw5I
                                       YXNoaUNvcnAgSW5jLjEYMBYGA1UEAxMPQ29uc3VsIEFnZW50IENBMFkwEwYHKoZI
                                       zj0CAQYIKoZIzj0DAQcDQgAE6xlZxCqILae9+hOrSteqT9hWW+C2Gs9kPt9dTUMA
                                       PZUJ1Bl6JJXP6Mt/Uz5dqPfLAxqLg4LWHagD/aBea1XNiaOCARowggEWMA4GA1Ud
                                       DwEB/wQEAwIBhjAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDwYDVR0T
                                       AQH/BAUwAwEB/zBoBgNVHQ4EYQRfOGI6NzY6YTU6OTA6NzQ6NTI6ZTc6MjI6MDY6
                                       Yzc6N2Y6OWQ6YTM6MmU6NDc6ZTQ6ZWY6Mjc6NzE6Yzg6NzY6MDI6YzY6ODU6MjI6
                                       ZGU6NGY6ZmU6ODc6MTI6OGQ6ZmIwagYDVR0jBGMwYYBfOGI6NzY6YTU6OTA6NzQ6
                                       NTI6ZTc6MjI6MDY6Yzc6N2Y6OWQ6YTM6MmU6NDc6ZTQ6ZWY6Mjc6NzE6Yzg6NzY6
                                       MDI6YzY6ODU6MjI6ZGU6NGY6ZmU6ODc6MTI6OGQ6ZmIwCgYIKoZIzj0EAwIDSAAw
                                       RQIhALDcXK/S5ciVuZnb2cfHLTzZhMP4mg9yZbFGLXYD2cZfAiBEqJbbaDj4knoZ
                                       l3Uv9OqozTEEzFdNseShueI9LekI8A==
                                       -----END CERTIFICATE-----

      CONSUL_TLS_SERVER_NAME:
      CONSUL_LOGIN_AUTH_METHOD:        consul-k8s-auth-method
      CONSUL_LOGIN_BEARER_TOKEN_FILE:  /var/run/secrets/kubernetes.io/serviceaccount/token
      CONSUL_LOGIN_META:               pod=$(POD_NAMESPACE)/$(POD_NAME)
      CONSUL_REDIRECT_TRAFFIC_CONFIG:  {"ConsulDNSIP":"127.0.0.1","ConsulDNSPort":8600,"ProxyUserID":"5995","ProxyInboundPort":20000,"ProxyOutboundPort":15001,"ExcludeInboundPorts":null,"ExcludeOutboundPorts":null,"ExcludeOutboundCIDRs":null,"ExcludeUIDs":["5996"],"NetNS":"","IptablesProvider":null}
    Mounts:
      /consul/connect-inject from consul-connect-inject-data (rw)
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-b4msk (ro)
Containers:
  consul-dataplane:
    Container ID:
    Image:         hashicorp/consul-dataplane:1.5.1
    Image ID:
    Port:          <none>
    Host Port:     <none>
    Args:
      -addresses
      consul-server.consul.svc
      -grpc-port=8502
      -proxy-service-id-path=/consul/connect-inject/proxyid
      -log-level=info
      -log-json=false
      -envoy-concurrency=2
      -credential-type=login
      -login-auth-method=consul-k8s-auth-method
      -login-bearer-token-path=/var/run/secrets/kubernetes.io/serviceaccount/token
      -ca-certs=/consul/connect-inject/consul-ca.pem
      -graceful-port=20600
      -shutdown-drain-listeners
      -shutdown-grace-period-seconds=30
      -graceful-shutdown-path=/graceful_shutdown
      -startup-grace-period-seconds=0
      -graceful-startup-path=/graceful_startup
      -telemetry-prom-scrape-path=/metrics
      -consul-dns-bind-port=8600
    State:          Waiting
      Reason:       PodInitializing
    Ready:          False
    Restart Count:  0
    Readiness:      tcp-socket :20000 delay=1s timeout=1s period=10s #success=1 #failure=3
    Environment:
      TMPDIR:                     /consul/connect-inject
      NODE_NAME:                   (v1:spec.nodeName)
      DP_SERVICE_NODE_NAME:       $(NODE_NAME)-virtual
      POD_NAME:                   nginx-deployment-68d9dc9859-8dq6p (v1:metadata.name)
      POD_NAMESPACE:              default (v1:metadata.namespace)
      POD_UID:                     (v1:metadata.uid)
      DP_CREDENTIAL_LOGIN_META:   pod=$(POD_NAMESPACE)/$(POD_NAME)
      DP_CREDENTIAL_LOGIN_META1:  pod=$(POD_NAMESPACE)/$(POD_NAME)
      DP_CREDENTIAL_LOGIN_META2:  pod-uid=$(POD_UID)
    Mounts:
      /consul/connect-inject from consul-connect-inject-data (rw)
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-b4msk (ro)
  nginx-deployment:
    Container ID:
    Image:          k8s.gcr.io/ingressconformance/echoserver:v0.0.1
    Image ID:
    Port:           80/TCP
    Host Port:      0/TCP
    State:          Waiting
      Reason:       PodInitializing
    Ready:          False
    Restart Count:  0
    Environment:
      SERVICE_NAME:  nginx-deployment
      POD_NAME:      nginx-deployment-68d9dc9859-8dq6p (v1:metadata.name)
      NAMESPACE:     default (v1:metadata.namespace)
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-b4msk (ro)
Conditions:
  Type                        Status
  PodReadyToStartContainers   True
  Initialized                 False
  Ready                       False
  ContainersReady             False
  PodScheduled                True
Volumes:
  kube-api-access-b4msk:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
  consul-connect-inject-data:
    Type:        EmptyDir (a temporary directory that shares a pod's lifetime)
    Medium:      Memory
    SizeLimit:   <unset>
QoS Class:       Burstable
Node-Selectors:  <none>
Tolerations:     node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                 node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
  Type     Reason     Age                 From               Message
  ----     ------     ----                ----               -------
  Normal   Scheduled  2m6s                default-scheduler  Successfully assigned default/nginx-deployment-68d9dc9859-8dq6p to pool-03ffzmlif-bao7d
  Normal   Pulled     41s (x5 over 2m5s)  kubelet            Container image "hashicorp/consul-k8s-control-plane:1.5.1" already present on machine
  Normal   Created    40s (x5 over 2m5s)  kubelet            Created container consul-connect-inject-init
  Normal   Started    40s (x5 over 2m5s)  kubelet            Started container consul-connect-inject-init
  Warning  BackOff    3s (x10 over 2m1s)  kubelet            Back-off restarting failed container consul-connect-inject-init in pod nginx-deployment-68d9dc9859-8dq6p_default(88547d26-da1f-48ba-9c59-0a85af69dedf)