Deploying Apps on Google Cloud – Kubernetes Engine

Posted bySudheer KondlaPosted inUncategorized

Stack used: Terraform, kubectl, YAML, Redis cluster, Python & Go Lang

Initialize terraform:

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ terraform init

Initializing the backend...

Initializing provider plugins...
- Checking for available provider plugins...
- Downloading plugin for provider "google" (hashicorp/google) 3.13.0...


* provider.google: version = "~> 3.13"

Terraform has been successfully initialized!

Before apply dry run terraform with “plan” option

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ terraform plan --out myplan
Refreshing Terraform state in-memory prior to plan...
The refreshed state will be used to calculate this plan, but will not be
persisted to local or remote state storage.


------------------------------------------------------------------------

An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:

  # google_container_cluster.gke-cluster will be created
  + resource "google_container_cluster" "gke-cluster" {
      + additional_zones            = (known after apply)
      + cluster_ipv4_cidr           = (known after apply)
      + default_max_pods_per_node   = (known after apply)
      + enable_binary_authorization = false
      + enable_intranode_visibility = (known after apply)
      + enable_kubernetes_alpha     = false
      + enable_legacy_abac          = false
      + enable_tpu                  = (known after apply)
      + endpoint                    = (known after apply)
      + id                          = (known after apply)
      + initial_node_count          = 3
      + instance_group_urls         = (known after apply)
      + label_fingerprint           = (known after apply)
      + location                    = "us-east1-b"
      + logging_service             = "logging.googleapis.com/kubernetes"
      + master_version              = (known after apply)
      + monitoring_service          = "monitoring.googleapis.com/kubernetes"
      + name                        = "my-first-gke-cluster"

.............
.............
............

terraform apply to create/modify k8s stack

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ terraform apply "myplan"
google_container_cluster.gke-cluster: Creating...
google_container_cluster.gke-cluster: Still creating... [10s elapsed]
google_container_cluster.gke-cluster: Still creating... [20s elapsed]
google_container_cluster.gke-cluster: Still creating... [30s elapsed]
google_container_cluster.gke-cluster: Still creating... [40s elapsed]
google_container_cluster.gke-cluster: Still creating... [50s elapsed]
google_container_cluster.gke-cluster: Still creating... [1m0s elapsed]
google_container_cluster.gke-cluster: Still creating... [1m10s elapsed]
google_container_cluster.gke-cluster: Still creating... [1m20s elapsed]
google_container_cluster.gke-cluster: Still creating... [1m30s elapsed]
google_container_cluster.gke-cluster: Still creating... [1m40s elapsed]
google_container_cluster.gke-cluster: Still creating... [1m50s elapsed]
google_container_cluster.gke-cluster: Still creating... [2m0s elapsed]
google_container_cluster.gke-cluster: Still creating... [2m10s elapsed]
google_container_cluster.gke-cluster: Still creating... [2m20s elapsed]
google_container_cluster.gke-cluster: Still creating... [2m30s elapsed]
google_container_cluster.gke-cluster: Still creating... [2m40s elapsed]
google_container_cluster.gke-cluster: Still creating... [2m50s elapsed]
google_container_cluster.gke-cluster: Still creating... [3m0s elapsed]
google_container_cluster.gke-cluster: Creation complete after 3m1s [id=projects/amplified-name-270419/locations/us-east1-b/clusters/my-first-gke-cluster]

Apply complete! Resources: 1 added, 0 changed, 0 destroyed.

Now Connect to google cloud and browser based authentication from a token

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ gcloud auth login
Your browser has been opened to visit:

    https://accounts.google.com/o/oauth2/auth?................................................................................................................

Set the project & get creds

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ gcloud config set project myk8s-project
Updated property [core/project].
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ gcloud container clusters get-credentials my-first-gke-cluster --zone us-east1-b --project myk8s-project
Fetching cluster endpoint and auth data.
kubeconfig entry generated for my-first-gke-cluster.
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$

Add extra pool

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ cat nodepool.tf
resource "google_container_node_pool" "extra-pool" {
  name               = "extra-node-pool"
  location           = "us-east1-b"
  cluster            = google_container_cluster.gke-cluster.name
  initial_node_count = 3
}

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ terraform apply "myplan"
google_container_node_pool.extra-pool: Creating...
google_container_node_pool.extra-pool: Still creating... [10s elapsed]
google_container_node_pool.extra-pool: Still creating... [20s elapsed]
google_container_node_pool.extra-pool: Still creating... [30s elapsed]
google_container_node_pool.extra-pool: Still creating... [40s elapsed]
google_container_node_pool.extra-pool: Still creating... [50s elapsed]
google_container_node_pool.extra-pool: Creation complete after 58s [id=projects/myk8s-project/locations/us-east1-b/clusters/my-first-gke-cluster/nodePools/extra-node-pool]
Apply complete! Resources: 1 added, 0 changed, 0 destroyed.

Deploy Redis 

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/examples/guestbook$ cat redis-master-deployment.yaml

apiVersion: apps/v1 #  for k8s versions before 1.9.0 use apps/v1beta2  and before 1.8.0 use extensions/v1beta1
kind: Deployment
metadata:
  name: redis-master
spec:
  selector:
    matchLabels:
      app: redis
      role: master
      tier: backend
  replicas: 1
  template:
    metadata:
      labels:
        app: redis
        role: master
        tier: backend
    spec:
      containers:
      - name: master
        image: k8s.gcr.io/redis:e2e  # or just image: redis
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
        ports:
        - containerPort: 6379
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/examples/guestbook$ kubectl create -f \
>     redis-master-deployment.yaml
deployment.apps/redis-master created
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/examples/guestbook$ kubectl get pods
NAME                           READY   STATUS              RESTARTS   AGE
redis-master-596696dd4-plxh9   0/1     ContainerCreating   0          10s
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/examples/guestbook$ cat redis-master-service.yaml
apiVersion: v1
kind: Service
metadata:
  name: redis-master
  labels:
    app: redis
    role: master
    tier: backend
spec:
  ports:
  - port: 6379
    targetPort: 6379
  selector:
    app: redis
    role: master
    tier: backend
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/examples/guestbook$ kubectl create -f \
>     redis-master-service.yaml
service/redis-master created
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/examples/guestbook$ kubectl get service
NAME           TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)    AGE
kubernetes     ClusterIP   10.27.240.1     <none>        443/TCP    17m
redis-master   ClusterIP   10.27.249.158   <none>        6379/TCP   6s
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/examples/guestbook$ cat redis-slave-deployment.yaml
apiVersion: apps/v1 #  for k8s versions before 1.9.0 use apps/v1beta2  and before 1.8.0 use extensions/v1beta1
kind: Deployment
metadata:
  name: redis-slave
spec:
  selector:
    matchLabels:
      app: redis
      role: slave
      tier: backend
  replicas: 2
  template:
    metadata:
      labels:
        app: redis
        role: slave
        tier: backend
    spec:
      containers:
      - name: slave
        image: gcr.io/google_samples/gb-redisslave:v1
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
        env:
        - name: GET_HOSTS_FROM
          value: dns
          # If your cluster config does not include a dns service, then to
          # instead access an environment variable to find the master
          # service's host, comment out the 'value: dns' line above, and
          # uncomment the line below:
          # value: env
        ports:
        - containerPort: 6379
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/examples/guestbook$ kubectl create -f \
>     redis-slave-deployment.yaml
deployment.apps/redis-slave created
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/examples/guestbook$ kubectl get pods
NAME                           READY   STATUS              RESTARTS   AGE
redis-master-596696dd4-plxh9   1/1     Running             0          84s
redis-slave-96685cfdb-bl8bs    0/1     ContainerCreating   0          7s
redis-slave-96685cfdb-nx8v5    0/1     ContainerCreating   0          7s
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/examples/guestbook$ cat redis-slave-service.yaml
apiVersion: v1
kind: Service
metadata:
  name: redis-slave
  labels:
    app: redis
    role: slave
    tier: backend
spec:
  ports:
  - port: 6379
  selector:
    app: redis
    role: slave
    tier: backend
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/examples/guestbook$ kubectl create -f \
>     redis-slave-service.yaml
service/redis-slave created
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/examples/guestbook$ kubectl get service
NAME           TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)    AGE
kubernetes     ClusterIP   10.27.240.1     <none>        443/TCP    19m
redis-master   ClusterIP   10.27.249.158   <none>        6379/TCP   83s
redis-slave    ClusterIP   10.27.251.180   <none>        6379/TCP   11s

Deploy Python docker container:

Build python docker container

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/webApp$ docker build -t dbwebapi .

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/webApp$ docker images|grep db
dbwebapi                                                                  latest                                           680b96d2e4f7        10 seconds ago      993MB

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/webApp$ docker tag dbwebapi gcr.io/${PROJECT_ID}/dbwebapi:v1

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/webApp$ docker push gcr.io/${PROJECT_ID}/dbwebapi:v1
The push refers to repository [gcr.io/amplified-name-270419/dbwebapi]
69c2e602b3ad: Pushed 
a61e41f4f360: Pushed 
041654b625c6: Pushed 
e04910a132ed: Pushed 
485799b4fb7a: Pushed 
4be1e4b7b0b1: Pushed 
e90afb708b27: Pushed 
b32c3fe9bc49: Pushed 
132d53d2fcf6: Pushed 
74ef248fc7e3: Pushed 
4bb171da3c44: Pushed 
.........
v1: digest: sha256:58cbc88b3afffd15ca5365a890e1a61c9e8aaa5fd9fd60ee4f153f34456b7caf size: 3687

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/webApp$ kubectl create deployment dbwebapi --image=gcr.io/amplified-name-270419/dbwebapi:v1
deployment.apps/dbwebapi created

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/webApp$ kubectl get pods
NAME                           READY   STATUS    RESTARTS   AGE
dbwebapi-7d8bbbb76b-74rdz      1/1     Running   0          20s
dbwebapi-7d8bbbb76b-8xc9l      1/1     Running   0          20s
dbwebapi-7d8bbbb76b-m9dtb      1/1     Running   0          20s
frontend-69859f6796-8qxh2      1/1     Running   0          75m
frontend-69859f6796-jb4w2      1/1     Running   0          75m
frontend-69859f6796-r5z6j      1/1     Running   0          75m
redis-master-596696dd4-plxh9   1/1     Running   0          77m
redis-slave-96685cfdb-bl8bs    1/1     Running   0          76m
redis-slave-96685cfdb-nx8v5    1/1     Running   0          76m
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/webApp$ kubectl get services
NAME           TYPE           CLUSTER-IP      EXTERNAL-IP     PORT(S)        AGE
frontend       LoadBalancer   10.27.247.228   34.74.109.101   80:30893/TCP   75m
kubernetes     ClusterIP      10.27.240.1     <none>          443/TCP        96m
redis-master   ClusterIP      10.27.249.158   <none>          6379/TCP       78m
redis-slave    ClusterIP      10.27.251.180   <none>          6379/TCP       76m

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ kubectl expose deployment dbwebapi --type=LoadBalancer --port 25000 --target-port 25443
service/dbwebapi exposed

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/webApp$ kubectl get services
NAME               TYPE           CLUSTER-IP      EXTERNAL-IP     PORT(S)           AGE
dbwebapi           LoadBalancer   10.27.241.175   <pending>       25000:31014/TCP   12s
frontend           LoadBalancer   10.27.247.228   34.74.109.101   80:30893/TCP      77m
kubernetes         ClusterIP      10.27.240.1     <none>          443/TCP           97m
redis-master       ClusterIP      10.27.249.158   <none>          6379/TCP          80m
redis-slave        ClusterIP      10.27.251.180   <none>          6379/TCP          78m

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/webApp$ kubectl get services
NAME               TYPE           CLUSTER-IP      EXTERNAL-IP      PORT(S)           AGE
dbwebapi           LoadBalancer   10.27.241.175   34.74.237.60     25000:31014/TCP   62s
frontend           LoadBalancer   10.27.247.228   34.74.109.101    80:30893/TCP      79m
kubernetes         ClusterIP      10.27.240.1     <none>           443/TCP           99m
redis-master       ClusterIP      10.27.249.158   <none>           6379/TCP          81m
redis-slave        ClusterIP      10.27.251.180   <none>           6379/TCP          80m

Build hello-web docker image

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/kubernetes-engine-samples/hello-app$ docker build -t gcr.io/${PROJECT_ID}/hello-app:v1 .

Successfully built 929d000392a8
Successfully tagged gcr.io/amplified-name-270419/hello-app:v1

Deploying hello-web 

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/webApp$ kubectl create deployment hello-web --image=gcr.io/${PROJECT_ID}/hello-app:v1
deployment.apps/hello-web created


(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/webApp$ kubectl expose deployment hello-web --type=LoadBalancer --port 80 --target-port 8080
service/hello-web exposed

Expose redis with LoadBalancer so you can query on Public IP (not required – use private IP for dB access)

(base) skondla@skondla-mac:~/apps/redis/src$ ./redis-cli -h 34.73.182.12
34.73.182.12:6379> ping
PONG
34.73.182.12:6379> exit
(base) skondla@skondla-mac:~/apps/redis/src$ ./redis-cli -h 34.73.182.12 get
(error) ERR wrong number of arguments for 'get' command
(base) skondla@skondla-mac:~/apps/redis/src$ ./redis-cli -h 34.73.182.12 KEYS '*'
1) "messages"
(base) skondla@skondla-mac:~/apps/redis/src$ ./redis-cli -h 34.73.182.12 get messages
",Hello"
(base) skondla@skondla-mac:~/apps/redis/src$ ./redis-cli -h 34.73.182.12 get messages
",Hello,Hi, Sudheer - How are doing?"
(base) skondla@skondla-mac:~/apps/redis/src$

Test hello-web

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/webApp$ curl -l http://35.237.106.75:80
Hello, world!
Version: 1.0.0
Hostname: hello-web-bf98759f7-92fgc
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine/webApp$

Testing dbwebAPI app (Python App)

https://34.74.237.60:25000/xxx

Python DB Web API app is successfully deployed on GCP Kubernetes Cluster

Redis container Logs

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ kubectl get pods
NAME                           READY   STATUS    RESTARTS   AGE
dbwebapi-676c645974-fpjr8      1/1     Running   0          4h17m
frontend-69859f6796-29hr8      1/1     Running   0          5h24m
frontend-69859f6796-4jlwh      1/1     Running   0          5h24m
frontend-69859f6796-88f4r      1/1     Running   0          5h24m
redis-master-596696dd4-zcrdb   1/1     Running   0          5h27m
redis-slave-96685cfdb-8l4hq    1/1     Running   0          5h25m
redis-slave-96685cfdb-c266k    1/1     Running   0          5h25m
(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ kubectl logs redis-master-596696dd4-zcrdb
                _._                                                  
           _.-``__ ''-._                                             
      _.-``    `.  `_.  ''-._           Redis 2.8.19 (00000000/0) 64 bit
  .-`` .-```.  ```\/    _.,_ ''-._                                   
 (    '      ,       .-`  | `,    )     Running in stand alone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._    /     _.-'    |     PID: 1
  `-._    `-._  `-./  _.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |           http://redis.io        
  `-._    `-._`-.__.-'_.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |                                  
  `-._    `-._`-.__.-'_.-'    _.-'                                   
      `-._    `-.__.-'    _.-'                                       
          `-._        _.-'                                           
              `-.__.-'                                               

[1] 23 Mar 19:37:36.865 # Server started, Redis version 2.8.19
[1] 23 Mar 19:37:36.865 # WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix this issue run the command 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' as root, and add it to your /etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled.
[1] 23 Mar 19:37:36.865 * The server is now ready to accept connections on port 6379
[1] 23 Mar 19:39:39.458 * Slave 10.24.3.3:6379 asks for synchronization
[1] 23 Mar 19:39:39.458 * Full resync requested by slave 10.24.3.3:6379
[1] 23 Mar 19:39:39.458 * Starting BGSAVE for SYNC with target: disk
[1] 23 Mar 19:39:39.458 * Background saving started by pid 8
[8] 23 Mar 19:39:39.473 * DB saved on disk
[8] 23 Mar 19:39:39.474 * RDB: 0 MB of memory used by copy-on-write
[1] 23 Mar 19:39:39.538 * Background saving terminated with success
[1] 23 Mar 19:39:39.539 * Synchronization with slave 10.24.3.3:6379 succeeded
[1] 23 Mar 19:39:40.023 * Slave 10.24.4.3:6379 asks for synchronization
[1] 23 Mar 19:39:40.023 * Full resync requested by slave 10.24.4.3:6379
[1] 23 Mar 19:39:40.023 * Starting BGSAVE for SYNC with target: disk
[1] 23 Mar 19:39:40.024 * Background saving started by pid 9
[9] 23 Mar 19:39:40.026 * DB saved on disk
[9] 23 Mar 19:39:40.027 * RDB: 0 MB of memory used by copy-on-write
[1] 23 Mar 19:39:40.038 * Background saving terminated with success
[1] 23 Mar 19:39:40.038 * Synchronization with slave 10.24.4.3:6379 succeeded
[1] 23 Mar 19:54:52.027 * 1 changes in 900 seconds. Saving...
[1] 23 Mar 19:54:52.027 * Background saving started by pid 10
[10] 23 Mar 19:54:52.031 * DB saved on disk
[10] 23 Mar 19:54:52.031 * RDB: 0 MB of memory used by copy-on-write
[1] 23 Mar 19:54:52.128 * Background saving terminated with success
[1] 23 Mar 20:09:53.028 * 1 changes in 900 seconds. Saving...
[1] 23 Mar 20:09:53.028 * Background saving started by pid 11
[11] 23 Mar 20:09:53.031 * DB saved on disk
[11] 23 Mar 20:09:53.032 * RDB: 0 MB of memory used by copy-on-write
[1] 23 Mar 20:09:53.128 * Background saving terminated with success
[1] 23 Mar 21:25:31.962 * DB saved on disk
[1] 23 Mar 21:25:32.173 * DB saved on disk

hell-web app container logs

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ kubectl logs frontend-69859f6796-29hr8
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 10.24.2.7. Set the 'ServerName' directive globally to suppress this message
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 10.24.2.7. Set the 'ServerName' directive globally to suppress this message
[Mon Mar 23 19:41:21.539692 2020] [mpm_prefork:notice] [pid 1] AH00163: Apache/2.4.10 (Debian) PHP/5.6.20 configured -- resuming normal operations
[Mon Mar 23 19:41:21.539950 2020] [core:notice] [pid 1] AH00094: Command line: 'apache2 -D FOREGROUND'
10.142.0.14 - - [23/Mar/2020:19:54:44 +0000] "GET / HTTP/1.1" 200 826 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.5 Safari/605.1.15"
10.142.0.14 - - [23/Mar/2020:19:54:44 +0000] "GET /controllers.js HTTP/1.1" 200 759 "http://35.229.81.94/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.5 Safari/605.1.15"
10.142.0.14 - - [23/Mar/2020:19:54:45 +0000] "GET /guestbook.php?cmd=get&key=messages HTTP/1.1" 200 244 "http://35.229.81.94/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.5 Safari/605.1.15"
10.142.0.16 - - [23/Mar/2020:19:54:45 +0000] "GET /favicon.ico HTTP/1.1" 404 437 "http://35.229.81.94/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.5 Safari/605.1.15"
10.142.0.11 - - [23/Mar/2020:19:55:41 +0000] "GET / HTTP/1.1" 200 1184 "-" "Mozilla/5.0 (compatible; Nimbostratus-Bot/v1.3.2; http://cloudsystemnetworks.com)"
10.142.0.16 - - [23/Mar/2020:20:08:24 +0000] "GET / HTTP/1.1" 200 770 "-" "Mozilla/5.0 zgrab/0.x"
10.142.0.11 - - [23/Mar/2020:20:16:10 +0000] "GET / HTTP/1.1" 200 1184 "-" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36"
10.142.0.15 - - [23/Mar/2020:20:54:02 +0000] "GET / HTTP/1.1" 200 826 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.5 Safari/605.1.15"
10.142.0.15 - - [23/Mar/2020:20:54:02 +0000] "GET /guestbook.php?cmd=get&key=messages HTTP/1.1" 200 279 "http://35.229.81.94/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.5 Safari/605.1.15"
10.142.0.15 - - [23/Mar/2020:22:05:08 +0000] "GET /Telerik.Web.UI.WebResource.axd?type=rau HTTP/1.1" 404 400 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36"
10.142.0.13 - - [24/Mar/2020:00:16:53 +0000] "GET / HTTP/1.1" 200 1184 "-" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36"

DB web API container logs

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ kubectl logs dbwebapi-676c645974-fpjr8
 * Serving Flask app "dbWebAPI" (lazy loading)
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: on
 * Running on https://0.0.0.0:25443/ (Press CTRL+C to quit)
 * Restarting with stat
 * Debugger is active!
 * Debugger PIN: 892-740-420
10.24.5.1 - - [23/Mar/2020 20:57:47] "GET /backup HTTP/1.1" 200 -
10.142.0.15 - - [23/Mar/2020 20:57:47] "GET /favicon.ico HTTP/1.1" 404 -
10.142.0.15 - - [23/Mar/2020 20:58:14] "GET /backup/create HTTP/1.1" 200 -
10.142.0.15 - - [23/Mar/2020 20:58:14] "GET /favicon.ico HTTP/1.1" 404 -
10.142.0.15 - - [23/Mar/2020 20:58:34] "GET /backup/status HTTP/1.1" 200 -
10.142.0.12 - - [23/Mar/2020 20:58:34] "GET /favicon.ico HTTP/1.1" 404 -
10.142.0.16 - - [23/Mar/2020 20:58:49] "GET /backup/delete HTTP/1.1" 200 -


Guestbook App (go lang)

Tear down Kube cluster

(base) skondla@skondla-mac:~/myStage/k8s/gcp/k8sEgine$ terraform destroy
google_container_node_pool.extra-pool: Refreshing state... [id=projects/amplified-name-270419/locations/us-east1-b/clusters/my-first-gke-cluster/nodePools/extra-node-pool]
google_container_cluster.gke-cluster: Refreshing state... [id=projects/amplified-name-270419/locations/us-east1-b/clusters/my-first-gke-cluster]

An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
  - destroy

Terraform will perform the following actions:

  # google_container_cluster.gke-cluster will be destroyed

(base) skondla@skondla-mac:~/apps/redis/src$ kubectl get pods
The connection to the server xx.xxx.xx.xxx was refused - did you specify the right host or port?
(base) skondla@skondla-mac:~/apps/redis/src$

Published by Sudheer Kondla

I am a software developer, devOps engineer, database and sys admin and software architect helping small to enterprise companies in many verticals. Have been in IT industry for more than 20+ years worked on very large platforms, dealing with battle tested software development, scaling, high availability , disaster recovery and fire-fighting scenarios.

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