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
Note
This has only been tested on CentOS 7 and Ubuntu 18.04 and requires commenting out all swap entries in /etc/fstab to work
Warning
This guide used to install the cluster on Ubuntu 18.04, but after seeing high CPU utilization after a few days of operation this guide was moved to CentOS 7. The specific issues on Ubuntu were logged in journalctl -xe and appeared to be related to "volumes not being found" and "networking disconnects".
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) $HOME/.kube/config
Or use the script:
./user-install-kubeconfig.sh
Check the Kubernetes Version
kubectl version Client Version: version.Info{Major:"1", Minor:"11", GitVersion:"v1.11.1", GitCommit:"b1b29978270dc22fecc592ac55d903350454310a", GitTreeState:"clean", BuildDate:"2018-07-17T18:53:20Z", GoVersion:"go1.10.3", Compiler:"gc", Platform:"linux/amd64"} The connection to the server localhost:8080 was refused - did you specify the right host or port?Confirm the Kubernetes Pods Are Running
kubectl get pods -n kube-system
NAME READY STATUS RESTARTS AGE coredns-78fcdf6894-k8srv 1/1 Running 0 4m coredns-78fcdf6894-xx8bt 1/1 Running 0 4m etcd-dev 1/1 Running 0 3m kube-apiserver-dev 1/1 Running 0 3m kube-controller-manager-dev 1/1 Running 0 3m kube-flannel-ds-m8k9w 1/1 Running 0 4m kube-proxy-p4blg 1/1 Running 0 4m kube-scheduler-dev 1/1 Running 0 3m tiller-deploy-759cb9df9-wxvp8 1/1 Running 0 4m
Here is a video showing how to deploy Postgres, Redis, Nginx Ingress, and the pgAdmin4 as pods in the cluster:
Note
Postgres, pgAdmin4 and Redis use Rook Ceph to persist data
Here are the commands to deploy Postgres, Redis, Nginx Ingress, and pgAdmin4 in the cluster:
Note
Please ensure helm is installed and the tiller pod in the kube-system namespace is the Running state or Redis will encounter deployment issues
Install Go using the ./tools/install-go.sh script or with the commands:
# note go install has only been tested on CentOS 7 and Ubuntu 18.04:
sudo su
GO_VERSION="1.11"
GO_OS="linux"
GO_ARCH="amd64"
go_file="go${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
Note
The Cert Manager is set to staging mode by default and requires the prod argument to prevent accidentally getting blocked due to Lets Encrypt rate limits
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/
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
Run from outside the Kubernetes cluster
Note
This tool requires the python
boto3pip is installedsource ./minio/envs/ext.env ./minio/run_s3_test.py
Verify the files were uploaded to Minio
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:
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
Login with:
- user:
trex - password:
123321
https://api.example.com/swagger
Login with:
- password:
admin
Login with:
- user:
[email protected] - password:
123321
Login with:
- access key:
trexaccesskey - secret key:
trex123321
Login with:
- user:
trex - password:
123321
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).
Create a virtual environment and install the client
virtualenv -p python3 /opt/venv && source /opt/venv/bin/activate pip install antinex-client
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 + cto 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:
Note
this can take a few minutes to finish depending on your hosting resources
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 $NF}') -p 6379
10.244.0.81:6379> info
10.244.0.81:6379> exit
Examine Redis Master
kubectl describe pod redis-master-0
Examine Persistent Volume Claim
kubectl get pvc NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE redis-ceph-data Bound pvc-1a88e3a6-9df8-11e8-8047-0800270864a8 8Gi RWO rook-ceph-block 46m
Examine Persistent Volume
kubectl get pv NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE pvc-1a88e3a6-9df8-11e8-8047-0800270864a8 8Gi RWO Delete Bound default/redis-ceph-data rook-ceph-block 46m
Create the Persistent Volumes
Warning FailedMount 2m kubelet, dev MountVolume.SetUp failed for volume "redis-pv" : mount failed: exit status 32
./pvs/create-pvs.sh
helm del --purge redis release "redis" deleted
Delete Claim
kubectl delete pvc redis-data-redis-master-0
Delete Volume
kubectl delete pv redis-pv persistentvolume "redis-pv" deleted
Using Crunchy Data's postgres containers requires having go installed. Go can be installed using the ./tools/install-go.sh script or with the commands:
# note go install has only been tested on CentOS 7 and Ubuntu 18.04:
sudo su
GO_VERSION="1.11"
GO_OS="linux"
GO_ARCH="amd64"
go_file="go${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
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
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
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
./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
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 $(./splunk/get-api-fqdn.sh) -i antinex
Example for debugging sp splunk connectivity from inside an API Pod:
kubectl exec -it api-59496ccb5f-2wp5t -n default echo 'starting search' && /bin/bash -c "source /opt/venv/bin/activate && sp -q 'index="antinex" AND hostname=local' -u trex -p 123321 -a 10.101.107.205:8089 -i antinex"
./splunk/logs.sh
./splunk/ssh.sh
This project is currently using the nginx-ingress instead of the Kubernetes Ingress using nginx. Use these commands to manage and debug the nginx ingress within Kubernetes.
Note
The default Yaml file annotations only work with the nginx-ingress customizations
./ingress/run.sh
./ingress/logs.sh
./ingress/ssh.sh
When troubleshooting the nginx ingress, it is helpful to view the nginx configs inside the container. Here is how to view the configs:
./ingress/view-configs.sh
If you know the pod name and the namespace for the nginx-ingress, then you can view the configs from the command line with:
app_name="jupyter"
app_name="pgadmin"
app_name="api"
use_namespace="default"
pod_name=$(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.
Create the CA, Keys and Certificates
cd ansible ansible-playbook -i inventory_dev create-x509s.yml
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
Note
If you get blocked due to rate-limits it will show up in the cert-manager logs like:
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"
Change the secrets file:
minio/secrets/default_access_keys.ymlChange the
access_keyandsecret_keyvalues 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
Deploy the secrets file
kubectl apply -f ./minio/secrets/default_access_keys.yml
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
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
Load the Minio S3 external environment variables:
source ./minio/envs/ext.env
Run the S3 Verification test script
./minio/run_s3_test.py
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-*.shto 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.
Note
By default Ceph is not hosting the S3 solution unless cephs3 is passed in as an argument to deploy-resource.sh.
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