Install and manage a Kubernetes cluster (version 1.13.4) with helm on a single CentOS 7 vm or in multi-host mode that runs the cluster on 3 CentOS 7 vms. Once running, you can deploy a distributed, scalable python stack capable of delivering a resilient REST service with JWT for authentication and Swagger for development. This service uses a decoupled REST API with two distinct worker backends for routing simple database read and write tasks vs long-running tasks that can use a Redis cache and do not need a persistent database connection. This is handy for not only simple CRUD applications and use cases, but also serving a secure multi-tenant environment where multiple users manage long-running tasks like training deep neural networks that are capable of making near-realtime predictions.

This guide was built for deploying the AntiNex stack of docker containers and the Stock Analysis Engine on a Kubernetes single host or multi-host cluster.

• Managing a Multi-Host Kubernetes Cluster with an External DNS Server
• Cert Manager with Let's Encrypt SSL support
• A Native Ceph Cluster for Persistent Volume Management with KVM
• A Third-party Rook Ceph Cluster for Persistent Volumes
• Minio S3 Object Store
• Redis
• Postgres
• Django REST API with JWT and Swagger
• Django REST API Celery Workers
• Jupyter
• Core Celery Workers
• pgAdmin4
• (Optional) Splunk with TCP and HEC Service Endpoints

Note

Please ensure for single-vm hosting that the CentOS machine has at least 4 CPU cores and more than 8 GB ram. Here is a screenshot of the CPU utilization during AI training with only 3 cores:

This guide installs the following systems and a storage solution Rook with Ceph cluster (default) or NFS volumes to prepare the host for running containers and automatically running them on host startup:

• Kubernetes
• Helm and Tiller
• Minio S3 Storage
• Persistent Storage Volumes using Rook with Ceph cluster or optional NFS Volumes mounted at: /data/k8/redis, /data/k8/postgres, /data/k8/pgadmin
• Flannel CNI

Here is a video showing how to prepare the host to run a local Kubernetes cluster:

Preparing the host to run Kubernetes requires run this as root

sudo su
./prepare.sh

1. Install Kubernetes Config

   Run as your user

   mkdir -p $HOME/.kube
   sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
   sudo chown $(id -u):$(id -g) $HOME/.kube/config
   

   Or use the script:

   ./user-install-kubeconfig.sh
   

2. Check the Kubernetes Version

   kubectl version
   Client Version: version.Info{Major:"1", Minor:"11", GitVersion:"v1.11.1", GitCommit:"b1b29978270dc22fecc592ac55d903350454310a", GitTreeState:"clean", BuildDate:"2018-07-17T18:53:20Z", GoVersion:"go1.10.3", Compiler:"gc", Platform:"linux/amd64"}
   The connection to the server localhost:8080 was refused - did you specify the right host or port?
   

3. Confirm the Kubernetes Pods Are Running

   kubectl get pods -n kube-system
   

   NAME                            READY     STATUS    RESTARTS   AGE
   coredns-78fcdf6894-k8srv        1/1       Running   0          4m
   coredns-78fcdf6894-xx8bt        1/1       Running   0          4m
   etcd-dev                        1/1       Running   0          3m
   kube-apiserver-dev              1/1       Running   0          3m
   kube-controller-manager-dev     1/1       Running   0          3m
   kube-flannel-ds-m8k9w           1/1       Running   0          4m
   kube-proxy-p4blg                1/1       Running   0          4m
   kube-scheduler-dev              1/1       Running   0          3m
   tiller-deploy-759cb9df9-wxvp8   1/1       Running   0          4m
   

Here is a video showing how to deploy Postgres, Redis, Nginx Ingress, and the pgAdmin4 as pods in the cluster:

Here are the commands to deploy Postgres, Redis, Nginx Ingress, and pgAdmin4 in the cluster:

Install Go using the ./tools/install-go.sh script or with the commands:

# note go install has only been tested on CentOS 7 and Ubuntu 18.04:
sudo su
GO_VERSION="1.11"
GO_OS="linux"
GO_ARCH="amd64"
go_file="go${GO_VERSION}.${GO_OS}-${GO_ARCH}.tar.gz"
curl https://dl.google.com/go/${go_file} --output /tmp/${go_file}
export GOPATH=$HOME/go/bin
export PATH=$PATH:$GOPATH:$GOPATH/bin
tar -C $HOME -xzf /tmp/${go_file}
$GOPATH/go get github.com/blang/expenv
# make sure to add GOPATH and PATH to ~/.bashrc

./user-install-kubeconfig.sh
./deploy-resources.sh

If you want to deploy splunk you can add it as an argument:

./deploy-resources.sh splunk

If you want to deploy splunk with Let's Encrypt make sure to add prod as an argument:

./deploy-resources.sh splunk prod

Here is a video showing how to start the Django REST Framework, Celery Workers, Jupyter, and the AntiNex Core as pods in the cluster:

Start all applications as your user with the command:

./start.sh

If you want to deploy the splunk-ready application builds, you can add it as an argument:

./start.sh splunk

If you want to deploy the splunk-ready application builds integrated with Let's Encrypt TLS encryption, just add prod as an argument:

./start.sh splunk prod

Depending on how fast your network connection is the initial container downloads can take a few minutes. Please wait until all pods are Running before continuing.

kubectl get pods

Here is a video showing how to apply database schema migrations in the cluster:

To apply new Django database migrations, run the following command:

./api/migrate-db.sh

When running locally (also known in these docs as dev mode), all ingress urls need to resolve on the network. Please append the following entries to your local /etc/hosts file on the 127.0.0.1 line:

sudo vi /etc/hosts

Append the entries to the existing 127.0.0.1 line:

127.0.0.1   <leave-original-values-here> api.example.com jupyter.example.com pgadmin.example.com splunk.example.com s3.example.com ceph.example.com minio.example.com

By default, the Kubernetes cluster has a Minio S3 object store running on a Ceph Persistent Volume. S3 is a great solution for distributing files, datasets, configurations, static assets, build artifacts and many more across components, regions, and datacenters using an S3 distributed backend. Minio can also replicate some of the AWS Lambda event-based workflows with Minio bucket event listeners.

For reference, Minio was deployed using this script:

./minio/run.sh

Login with:

• access key: trexaccesskey
• secret key: trex123321

https://minio.example.com/minio/s3-verification-tests/

1. Run from inside the API container

   ./api/ssh.sh
   source /opt/venv/bin/activate && run_s3_test.py
   

   Example logs:

   creating test file: run-s3-test.txt
   connecting: http://minio-service:9000
   checking bucket=s3-verification-tests exists
   upload_file(run-s3-test.txt, s3-verification-tests, s3-worked-on-2018-08-12-15-21-02)
   upload_file(s3-verification-tests, s3-worked-on-2018-08-12-15-21-02, download-run-s3-test.txt)
   download_filename=download-run-s3-test.txt contents: tested on: 2018-08-12 15:21:02
   exit
   

2. Run from outside the Kubernetes cluster

   Note

   This tool requires the python boto3 pip is installed

   source ./minio/envs/ext.env
   ./minio/run_s3_test.py
   

3. Verify the files were uploaded to Minio

   https://minio.example.com/minio/s3-verification-tests/

By default, the Kubernetes cluster is running a Rook Ceph cluster for storage which provides HA persistent volumes and claims.

You can review the persistent volumes and claims using the Ceph Dashboard:

https://ceph.example.com

Create the user trex with password 123321 on the REST API.

./api/create-user.sh

Here are the hosted web application urls. These urls are made accessible by the included nginx-ingress.

Login with:

• user: trex
• password: 123321

https://api.example.com

Login with:

• user: trex
• password: 123321

https://api.example.com/swagger

Login with:

• password: admin

https://jupyter.example.com

Login with:

• user: [email protected]
• password: 123321

https://pgadmin.example.com

Login with:

• access key: trexaccesskey
• secret key: trex123321

https://minio.example.com

https://ceph.example.com

Login with:

• user: trex
• password: 123321

https://splunk.example.com

These steps install the AntiNex python client for training a deep neural network to predict attack packets from recorded network data (all of which is already included in the docker containers).

1. Create a virtual environment and install the client

   virtualenv -p python3 /opt/venv && source /opt/venv/bin/activate
   pip install antinex-client
   

2. Watch the application logs

   From a separate terminal, you can tail the Django REST API logs with the command:

   ./api/logs.sh
   

   From a separate terminal, you can tail the Django Celery Worker logs with the command:

   ./worker/logs.sh
   

   From a separate terminal, you can tail the AntiNex Core Worker logs with the command:

   ./core/logs.sh
   

   Note

   Use ctrl + c to stop these log tailing commands

With virtual environment set up, we can use the client to train a deep neural network with the included datasets:

ai -a https://api.example.com -u trex -p 123321 -s -f ./tests/scaler-full-django-antinex-simple.json

While you wait, here is a video showing the training and get results:

ai_get_job.py -a https://api.example.com -u trex -p 123321 -i 1

ai_get_results.py -a https://api.example.com -u trex -p 123321 -i 1 -s

Below are steps to manually deploy each component in the stack with Kubernetes.

./redis/run.sh

Or manually with the commands:

echo "deploying persistent volume for redis"
kubectl apply -f ./redis/pv.yml
echo "deploying Bitnami redis stable with helm"
helm install \
    --name redis stable/redis \
    --set rbac.create=true \
    --values ./redis/redis.yml

The following commands assume you have redis-tools installed (sudo apt-get install redis-tools).

redis-cli -h $(kubectl describe pod redis-master-0 | grep IP | awk '{print $NF}') -p 6379
10.244.0.81:6379> info
10.244.0.81:6379> exit

1. Examine Redis Master

   kubectl describe pod redis-master-0
   

2. Examine Persistent Volume Claim

   kubectl get pvc
   NAME                      STATUS    VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS      AGE
   redis-ceph-data           Bound     pvc-1a88e3a6-9df8-11e8-8047-0800270864a8   8Gi        RWO            rook-ceph-block   46m
   

3. Examine Persistent Volume

   kubectl get pv
   NAME                                       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS    CLAIM                             STORAGECLASS      REASON    AGE
   pvc-1a88e3a6-9df8-11e8-8047-0800270864a8   8Gi        RWO            Delete           Bound     default/redis-ceph-data           rook-ceph-block             46m
   

1. Create the Persistent Volumes

   Warning  FailedMount       2m               kubelet, dev       MountVolume.SetUp failed for volume "redis-pv" : mount failed: exit status 32
   

   ./pvs/create-pvs.sh
   

helm del --purge redis
release "redis" deleted

1. Delete Claim

   kubectl delete pvc redis-data-redis-master-0
   

2. Delete Volume

   kubectl delete pv redis-pv
   persistentvolume "redis-pv" deleted
   

Using Crunchy Data's postgres containers requires having go installed. Go can be installed using the ./tools/install-go.sh script or with the commands:

# note go install has only been tested on CentOS 7 and Ubuntu 18.04:
sudo su
GO_VERSION="1.11"
GO_OS="linux"
GO_ARCH="amd64"
go_file="go${GO_VERSION}.${GO_OS}-${GO_ARCH}.tar.gz"
curl https://dl.google.com/go/${go_file} --output /tmp/${go_file}
export GOPATH=$HOME/go/bin
export PATH=$PATH:$GOPATH:$GOPATH/bin
tar -C $HOME -xzf /tmp/${go_file}
$GOPATH/go get github.com/blang/expenv
# make sure to add GOPATH and PATH to ~/.bashrc

Start the Postgres container within Kubernetes:

./postgres/run.sh

1. Examine Postgres

   kubectl describe pod primary
   
   Type    Reason     Age   From               Message
   ----    ------     ----  ----               -------
   Normal  Scheduled  2m    default-scheduler  Successfully assigned default/primary to dev
   Normal  Pulling    2m    kubelet, dev       pulling image "crunchydata/crunchy-postgres:centos7-10.4-1.8.3"
   Normal  Pulled     2m    kubelet, dev       Successfully pulled image "crunchydata/crunchy-postgres:centos7-10.4-1.8.3"
   Normal  Created    2m    kubelet, dev       Created container
   Normal  Started    2m    kubelet, dev       Started container
   

2. Examine Persistent Volume Claim

   kubectl get pvc
   NAME                      STATUS    VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS      AGE
   pgadmin4-http-data        Bound     pvc-19031825-9df8-11e8-8047-0800270864a8   400M       RWX            rook-ceph-block   46m
   primary-pgdata            Bound     pvc-17652595-9df8-11e8-8047-0800270864a8   400M       RWX            rook-ceph-block   46m
   

3. Examine Persistent Volume

   kubectl get pv
   NAME                                       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS    CLAIM                             STORAGECLASS      REASON    AGE
   pvc-17652595-9df8-11e8-8047-0800270864a8   400M       RWX            Delete           Bound     default/primary-pgdata            rook-ceph-block             47m
   pvc-19031825-9df8-11e8-8047-0800270864a8   400M       RWX            Delete           Bound     default/pgadmin4-http-data        rook-ceph-block             47m
   

Please confirm go is installed with the Install Go section.

Start the pgAdmin4 container within Kubernetes:

./pgadmin/run.sh

./pgadmin/logs.sh

./pgadmin/ssh.sh

Use these commands to manage the Django REST Framework pods within Kubernetes.

./api/run.sh

To apply a django database migration run the following command:

./api/migrate-db.sh

./api/logs.sh

./api/ssh.sh

Use these commands to manage the Django Celery Worker pods within Kubernetes.

./worker/run.sh

./worker/logs.sh

./worker/ssh.sh

Use these commands to manage the Backend AntiNex Core pods within Kubernetes.

./core/run.sh

./core/logs.sh

./core/ssh.sh

Use these commands to manage the Jupyter pods within Kubernetes.

./jupyter/run.sh

Login with:

• password: admin

https://jupyter.example.com

./jupyter/logs.sh

./jupyter/ssh.sh

Use these commands to manage the Splunk container within Kubernetes.

./splunk/run.sh

Login with:

• user: trex
• password: 123321

https://splunk.example.com

Here is the splunk searching command line tool I use with these included applications:

https://github.com/jay-johnson/spylunking

With search example documentation:

https://spylunking.readthedocs.io/en/latest/scripts.html#examples

Find logs in splunk using the sp command line tool:

sp -q 'index="antinex" | reverse' -u trex -p 123321 -a $(./splunk/get-api-fqdn.sh) -i antinex

sp -q 'index="antinex" AND name=api | head 20 | reverse' -u trex -p 123321 -a $(./splunk/get-api-fqdn.sh) -i antinex

sp -q 'index="antinex" AND name=worker | head 20 | reverse' -u trex -p 123321 -a $(./splunk/get-api-fqdn.sh) -i antinex

sp -q 'index="antinex" AND name=core | head 20 | reverse' -u trex -p 123321 -a $(./splunk/get-api-fqdn.sh) -i antinex

sp -q 'index="antinex" AND name=jupyter | head 20 | reverse' -u trex -p 123321 -a $(./splunk/get-api-fqdn.sh) -i antinex

Example for debugging sp splunk connectivity from inside an API Pod:

kubectl exec -it api-59496ccb5f-2wp5t -n default echo 'starting search' && /bin/bash -c "source /opt/venv/bin/activate && sp -q 'index="antinex" AND hostname=local' -u trex -p 123321 -a 10.101.107.205:8089 -i antinex"

./splunk/logs.sh

./splunk/ssh.sh

This project is currently using the nginx-ingress instead of the Kubernetes Ingress using nginx. Use these commands to manage and debug the nginx ingress within Kubernetes.

./ingress/run.sh

./ingress/logs.sh

./ingress/ssh.sh

When troubleshooting the nginx ingress, it is helpful to view the nginx configs inside the container. Here is how to view the configs:

./ingress/view-configs.sh

If you know the pod name and the namespace for the nginx-ingress, then you can view the configs from the command line with:

app_name="jupyter"
app_name="pgadmin"
app_name="api"
use_namespace="default"
pod_name=$(kubectl get pods -n ${use_namespace} | awk '{print $1}' | grep nginx | head -1)
kubectl exec -it ${pod_name} -n ${use_namespace} cat /etc/nginx/conf.d/${use_namespace}-${app_name}-ingress.conf

To deploy splunk you can add the argument splunk to the ./deploy-resources.sh splunk script. Or you can manually run it with the command:

./splunk/run.sh

Or if you want to use Let's Encrypt for SSL:

./splunk/run.sh prod

After deploying the splunk pod, you can deploy the splunk-ready applications with the command:

./start.sh splunk

./splunk/logs.sh

./splunk/ssh.sh

./splunk/view-ingress-config.sh

If you have openssl installed you can use this ansible playbook to create your own certificate authority (CA), keys and certs.

1. Create the CA, Keys and Certificates

   cd ansible
   ansible-playbook -i inventory_dev create-x509s.yml
   

2. Check the CA, x509, keys and certificates for the client and server were created

   ls -l ./ssl
   

This is a work in progress, but in dev mode the cert-manager is not in use. Instead the cluster utilizes pre-generated x509s TLS SSL files created with the included ansible playbook create-x509s.yml. Once created, you can deploy them as Kubernetes secrets using the deploy-secrets.sh script and reload them at any time in the future.

Run this to create the TLS secrets:

./ansible/deploy-secrets.sh

kubectl get secrets | grep tls
tls-ceph                kubernetes.io/tls                     2         36m
tls-client              kubernetes.io/tls                     2         36m
tls-database            kubernetes.io/tls                     2         36m
tls-docker              kubernetes.io/tls                     2         36m
tls-jenkins             kubernetes.io/tls                     2         36m
tls-jupyter             kubernetes.io/tls                     2         36m
tls-k8                  kubernetes.io/tls                     2         36m
tls-kafka               kubernetes.io/tls                     2         36m
tls-kibana              kubernetes.io/tls                     2         36m
tls-minio               kubernetes.io/tls                     2         36m
tls-nginx               kubernetes.io/tls                     2         36m
tls-pgadmin             kubernetes.io/tls                     2         36m
tls-phpmyadmin          kubernetes.io/tls                     2         36m
tls-rabbitmq            kubernetes.io/tls                     2         36m
tls-redis               kubernetes.io/tls                     2         36m
tls-restapi             kubernetes.io/tls                     2         36m
tls-s3                  kubernetes.io/tls                     2         36m
tls-splunk              kubernetes.io/tls                     2         36m
tls-webserver           kubernetes.io/tls                     2         36m

If you want to deploy new TLS secrets at any time, use the reload argument with the deploy-secrets.sh script. Doing so will delete the original secrets and recreate all of them using the new TLS values:

./ansible/deploy-secrets.sh -r

Use these commands to manage the Cert Manager with Let's Encrypt SSL support within Kubernetes. By default, the cert manager is deployed only in prod mode. If you run it in production mode, then it will install real, valid x509 certificates from Let's Encrypt into the nginx-ingress automatically.

Start the cert manager in prod mode to enable Let's Encrypt TLS Encryption with the command:

./start.sh prod

Or manually with the command:

./cert-manager/run.sh prod

If you have splunk you can just add it to the arguments:

./start.sh splunk prod

When using the production mode, make sure to view the logs to ensure you are not being blocked due to rate limiting:

./cert-manager/logs.sh

If you notice things are not working correctly, you can quickly prevent yourself from getting blocked by stopping the cert manager with the command:

./cert-manager/_uninstall.sh

I0731 07:53:43.313709       1 sync.go:273] Error issuing certificate for default/api.antinex.com-tls: error getting certificate from acme server: acme: urn:ietf:params:acme:error:rateLimited: Error finalizing order :: too many certificates already issued for exact set of domains: api.antinex.com: see https://letsencrypt.org/docs/rate-limits/
E0731 07:53:43.313738       1 sync.go:182] [default/api.antinex.com-tls] Error getting certificate 'api.antinex.com-tls': secret "api.antinex.com-tls" not found

To reduce debugging issues, the cert manager ClusterIssuer objects use the same name for staging and production mode. This is nice because you do not have to update all the annotations to deploy on production vs staging:

The cert manager starts and defines the issuer name for both production and staging as:

--set ingressShim.defaultIssuerName=letsencrypt-issuer

Make sure to set any nginx ingress annotations that need Let's Encrypt SSL encryption to these values:

annotations:
  kubernetes.io/tls-acme: "true"
  kubernetes.io/ingress.class: "nginx"
  certmanager.k8s.io/cluster-issuer: "letsencrypt-issuer"

1. Change the secrets file: minio/secrets/default_access_keys.yml

   Change the access_key and secret_key values after generating the new base64 string values for the secrets file:

   echo -n "NewAccessKey" | base64
   TmV3QWNjZXNzS2V5
   # now you can replace the access_key's value in the secrets file with the string: TmV3QWNjZXNzS2V5
   

   echo -n "NewSecretKey" | base64
   TmV3U2VjcmV0S2V5
   # now you can replace the secret_key's value in the secrets file with the string: TmV3QWNjZXNzS2V5
   

2. Deploy the secrets file

   kubectl apply -f ./minio/secrets/default_access_keys.yml
   

3. Restart the Minio Pod

   kubectl delete pod -l app=minio
   

If you have changed the default access and secret keys, then you will need to export the following environment variables as needed to make sure the ./minio/run_s3_test.py test script works:

export S3_ACCESS_KEY=<minio access key: trexaccesskey - default>
export S3_SECRET_KEY=<minio secret key: trex123321 - default>
export S3_REGION_NAME=<minio region name: us-east-1 - default>
export S3_ADDRESS=<minio service endpoint: external address found with the script ./minio/get-s3-endpoint.sh and the internal cluster uses the service: minio-service:9000>
# examples of setting up a minio env files are in: ./minio/envs

Login with:

• access key: trexaccesskey
• secret key: trex123321

https://minio.example.com

If you want to use the Minio S3 service within the cluster please use the endpoint:

minio-service:9000

or source the internal environment file:

source ./minio/envs/int.env

If you want to use the Minio S3 service from outside the cluser please use the endpoint provided by the script:

./minio/get-s3-endpoint.sh
# which for this documentation was the minio service's Endpoints:
# 10.244.0.103:9000

or source the external environment file:

source ./minio/envs/ext.env

1. Load the Minio S3 external environment variables:

   source ./minio/envs/ext.env
   

2. Run the S3 Verification test script

   ./minio/run_s3_test.py
   

3. Confirm Verification Keys are showing up in this Minio S3 bucket

   https://minio.example.com/minio/s3-verification-tests/

   If not please use the describe tools in ./minio/describe-*.sh to grab the logs and please file a GitHub issue

./minio/describe-service.sh

./minio/describe-service.sh

./minio/describe-ingress.sh

./minio/_uninstall.sh

Please refer to the Rook Common Issues for the latest updates on how to use your Rook Ceph cluster.

There are included troubleshooting tools in the ./rook directory with an overview of each below:

./rook/view-system-pods.sh

-----------------------------------------
Getting the Rook Ceph System Pods:
kubectl -n rook-ceph-system get pod
NAME                                  READY     STATUS    RESTARTS   AGE
rook-ceph-agent-g9vzm                 1/1       Running   0          7m
rook-ceph-operator-78d498c68c-tbsdf   1/1       Running   0          7m
rook-discover-h9wj9                   1/1       Running   0          7m

./rook/view-ceph-pods.sh

-----------------------------------------
Getting the Rook Ceph Pods:
kubectl -n rook-ceph get pod
NAME                                  READY     STATUS      RESTARTS   AGE
rook-ceph-mgr-a-9c44495df-7jksz       1/1       Running     0          6m
rook-ceph-mon0-rxxsl                  1/1       Running     0          6m
rook-ceph-mon1-gqblg                  1/1       Running     0          6m
rook-ceph-mon2-7xfsq                  1/1       Running     0          6m
rook-ceph-osd-id-0-7d4d4c8794-kgr2d   1/1       Running     0          6m
rook-ceph-osd-prepare-dev-kmsn9       0/1       Completed   0          6m
rook-ceph-tools                       1/1       Running     0          6m

kubectl get pv
NAME                                       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS    CLAIM                             STORAGECLASS      REASON    AGE
pvc-03e6e4ef-9df8-11e8-8047-0800270864a8   1Gi        RWO            Delete           Bound     default/certs-pv-claim            rook-ceph-block             46m
pvc-0415de24-9df8-11e8-8047-0800270864a8   1Gi        RWO            Delete           Bound     default/configs-pv-claim          rook-ceph-block             46m
pvc-0441307f-9df8-11e8-8047-0800270864a8   1Gi        RWO            Delete           Bound     default/datascience-pv-claim      rook-ceph-block             46m
pvc-0468ef73-9df8-11e8-8047-0800270864a8   1Gi        RWO            Delete           Bound     default/frontendshared-pv-claim   rook-ceph-block             46m
pvc-04888222-9df8-11e8-8047-0800270864a8   1Gi        RWO            Delete           Bound     default/staticfiles-pv-claim      rook-ceph-block             46m
pvc-1c3e359d-9df8-11e8-8047-0800270864a8   10Gi       RWO            Delete           Bound     default/minio-pv-claim            rook-ceph-block             46m

kubectl get pvc
NAME                      STATUS    VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS      AGE
certs-pv-claim            Bound     pvc-03e6e4ef-9df8-11e8-8047-0800270864a8   1Gi        RWO            rook-ceph-block   47m
configs-pv-claim          Bound     pvc-0415de24-9df8-11e8-8047-0800270864a8   1Gi        RWO            rook-ceph-block   47m
datascience-pv-claim      Bound     pvc-0441307f-9df8-11e8-8047-0800270864a8   1Gi        RWO            rook-ceph-block   47m
frontendshared-pv-claim   Bound     pvc-0468ef73-9df8-11e8-8047-0800270864a8   1Gi        RWO            rook-ceph-block   47m
minio-pv-claim            Bound     pvc-1c3e359d-9df8-11e8-8047-0800270864a8   10Gi       RWO            rook-ceph-block   46m

Going forward, Ceph will automatically create a persistent volume if one is not available for binding to an available Persistent Volume Claim. To create a new persistent volume, just create a claim and verify the Rook Ceph cluster created the persistent volume and both are bound to each other.

kubectl apply -f pvs/pv-staticfiles-ceph.yml

kubectl get pv
NAME                                       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS    CLAIM                          STORAGECLASS      REASON    AGE
pvc-77afbc7a-9ade-11e8-b293-0800270864a8   20Gi       RWO            Delete           Bound     default/staticfiles-pv-claim   rook-ceph-block             2s

kubectl get pvc
NAME                   STATUS    VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS      AGE
staticfiles-pv-claim   Bound     pvc-77afbc7a-9ade-11e8-b293-0800270864a8   20Gi       RWO            rook-ceph-block   11s

kubectl describe pv pvc-c88fc37b-9adf-11e8-9fae-0800270864a8
Name:            pvc-c88fc37b-9adf-11e8-9fae-0800270864a8
Labels:          <none>
Annotations:     pv.kubernetes.io/provisioned-by=ceph.rook.io/block
Finalizers:      [kubernetes.io/pv-protection]
StorageClass:    rook-ceph-block
Status:          Bound
Claim:           default/certs-pv-claim
Reclaim Policy:  Delete
Access Modes:    RWO
Capacity:        20Gi
Node Affinity:   <none>
Message:
Source:
    Type:       FlexVolume (a generic volume resource that is provisioned/attached using an exec based plugin)
    Driver:     ceph.rook.io/rook-ceph-system
    FSType:     xfs
    SecretRef:  <nil>
    ReadOnly:   false
    Options:    map[clusterNamespace:rook-ceph image:pvc-c88fc37b-9adf-11e8-9fae-0800270864a8 pool:replicapool storageClass:rook-ceph-block]
Events:         <none>

./rook/show-ceph-status.sh

----------------------------------------------
Getting the Rook Ceph Status with Toolbox:
kubectl -n rook-ceph exec -it rook-ceph-tools ceph status
cluster:
    id:     7de1988c-03ea-41f3-9930-0bde39540552
    health: HEALTH_OK

services:
    mon: 3 daemons, quorum rook-ceph-mon2,rook-ceph-mon0,rook-ceph-mon1
    mgr: a(active)
    osd: 1 osds: 1 up, 1 in

data:
    pools:   1 pools, 100 pgs
    objects: 12 objects, 99 bytes
    usage:   35443 MB used, 54756 MB / 90199 MB avail
    pgs:     100 active+clean

./rook/show-ceph-osd-status.sh

----------------------------------------------
Getting the Rook Ceph OSD Status with Toolbox:
kubectl -n rook-ceph exec -it rook-ceph-tools ceph osd status
+----+-------------------------------------+-------+-------+--------+---------+--------+---------+-----------+
| id |                 host                |  used | avail | wr ops | wr data | rd ops | rd data |   state   |
+----+-------------------------------------+-------+-------+--------+---------+--------+---------+-----------+
| 0  | rook-ceph-osd-id-0-7d4d4c8794-kgr2d | 34.6G | 53.4G |    0   |     0   |    0   |     0   | exists,up |
+----+-------------------------------------+-------+-------+--------+---------+--------+---------+-----------+

./rook/show-ceph-df.sh

----------------------------------------------
Getting the Rook Ceph df with Toolbox:
kubectl -n rook-ceph exec -it rook-ceph-tools ceph df
GLOBAL:
    SIZE       AVAIL      RAW USED     %RAW USED
    90199M     54756M       35443M         39.29
POOLS:
    NAME            ID     USED     %USED     MAX AVAIL     OBJECTS
    replicapool     1        99         0        50246M          12

./rook/show-ceph-rados-df.sh

----------------------------------------------
Getting the Rook Ceph rados df with Toolbox:
kubectl -n rook-ceph exec -it rook-ceph-tools rados df
POOL_NAME   USED OBJECTS CLONES COPIES MISSING_ON_PRIMARY UNFOUND DEGRADED RD_OPS RD   WR_OPS WR
replicapool   99      12      0     12                  0       0        0    484 381k     17 7168

total_objects    12
total_used       35443M
total_avail      54756M
total_space      90199M

Flannel can exhaust all available ip addresses in the CIDR network range. When this happens please run the following command to clean up the local cni network files:

./tools/reset-flannel-cni-networks.sh

Here are the AntiNex repositories, documentation and build reports:

Component	Build	Docs Link	Docs Build
REST API		Docs
Core Worker		Docs
Network Pipeline		Docs
AI Utils		Docs
Client		Docs

Here is a video showing how to reset the local Kubernetes cluster.

Please be careful as these commands will shutdown all containers and reset the Kubernetes cluster.

Run as root:

sudo su
kubeadm reset -f
./prepare.sh

Or use the file:

sudo su
./tools/cluster-reset.sh

Or the full reset and deploy once ready:

sudo su
cert_env=dev; ./tools/reset-flannel-cni-networks.sh; ./tools/cluster-reset.sh ; ./user-install-kubeconfig.sh ; sleep 30; ./deploy-resources.sh splunk ${cert_env}
exit
# as your user
./user-install-kubeconfig.sh
# depending on testing vs prod:
# ./start.sh splunk
# ./start.sh splunk prod

Right now, the python virtual environment is only used to bring in ansible for running playbooks, but it will be used in the future with the kubernetes python client as I start using it more and more.

virtualenv -p python3 /opt/venv && source /opt/venv/bin/activate && pip install -e .

py.test

or

python setup.py test

Apache 2.0 - Please refer to the LICENSE for more details