Helm chart for Itential Automation Platform

This repo contains helm charts for running Itential Automation Platform in Kubernetes. Requires Helm version v3.15.0.

Itential Automation Platform (IAP)

The chart will not install the Redis and MongoDB dependencies of the IAP application. The chart assumes that those are running, configured, and bootstrapped with all necessary data. The application is installed using a Kubernetes Statefulset. It also includes persistent volume claims, ingress, and other Kubernetes objects suitable to run the application.

This chart is optimized for Itential version P6 and beyond and will not work with older Itential versions.

Usage

This will install IAP according to how its configured in the values.yaml file ("latest").

helm install iap . -f values.yaml

This will install IAP with the "6.0.4" image.

helm install iap . -f values.yaml --set image.tag=6.0.4

Requirements & Dependencies

Repository	Name	Version
https://charts.jetstack.io	cert-manager	1.12.3
https://kubernetes-sigs.github.io/external-dns/	external-dns	1.17.0

Secrets

The chart assumes the following secrets, they are not included in the Chart.

imagePullSecrets

This is the secret that will pull the image from the Itential ECR. Name to be determined by the user of the chart and that name must be provided in the values file (imagePullSecrets[0].name).

itential-platform-secrets

This secret contains several sensitive values that the application may use. They are loaded into the pod as environment variables. Some are optional and depend on your implementation. The creation of this secret is left out of the chart to allow for flexibility with its creation.

Secret Key	Description	Required?
ITENTIAL_DEFAULT_USER_PASSWORD	The password for the default local user, normally only used during installation and initial configuration.	Yes
ITENTIAL_ENCRYPTION_KEY	Used by the application for native encryption of sensitive values. 64-length hex string describing a 256 bit encryption key.	Yes
ITENTIAL_MONGO_PASSWORD	The MongoDB password for the itential user.	Yes
ITENTIAL_MONGO_URL	The MongoDB connection string, which can sometimes contain passwords.	Yes
ITENTIAL_REDIS_PASSWORD	The Redis password for the itential user.	Yes
ITENTIAL_REDIS_SENTINEL_PASSWORD	The Redis Sentinel password for the itential user. Only required if connecting to a Redis replica set that also uses Redis Sentinel.	No
ITENTIAL_VAULT_SECRET_ID	The Hashicorp Vault Secret ID when using Hashicorp Vault as the secrets manager. Only required if using Hashicorp Vault for secrets.	No
ITENTIAL_WEBSERVER_HTTPS_PASSPHRASE	The passphrase used in conjunction with an HTTPS certificate.	No

iap-ca

This secret represents the CA used by cert-manager to derive all the TLS certificates. Name to be provided by the user of the chart in the values file (issuer.caSecretName) if using cert-manager.

Certificates

The chart will require a Certificate Authority to be added to the Kubernetes environment. This is used by the chart when running with useTLS flag enabled. The chart will use this CA to generate the necessary certificates using a Kubernetes Issuer which is included. The Issuer will issue the certificates using the CA. The certificates are then included using a Kubernetes Secret which is mounted by the pods. Creating and adding this CA is outside of the scope of this chart.

Both the Issuer and the Certificate objects are realized by using the widely used Kubernetes add-on called cert-manager. Cert-manager is responsible for making the TLS certificates required by using the CA that was installed separately. The installation of cert-manager is outside the scope of this chart. To check if this is already installed run this command:

kubectl get crds | grep cert-manager

For more information see the Cert Manager project.

If cert-manager can not be used then the TLS certificates must be manually added to the Kubernetes cluster. The Helm templates expect them to be in a secret named <Chart.name>-tls-secret by default, or a custom name specified by certificate.secretName in values.yaml. The secret expects the following keys:

Key	Description
tls.crt	The TLS certificate that identifies this "server".
tls.key	The private key for this certificate.
ca.crt	The Certificate Authority used to generate these certificates and keys.

DNS

This is an optional requirement.

Itential used the ExternalDNS project to facilitate the creation of DNS entries. ExternalDNS synchronizes exposed Kubernetes Services and Ingresses with DNS providers. This is not a requirement for running the chart. The chart and the application can run without this if needed. We chose to use this to provide us with external addresses.

For more information see the ExternalDNS project.

Volumes

Name	Type	Description
iap-logs-volume	Persistent Volume Claim	A persistent volume claim to mount a directory to write IAP log files to
iap-asset-volume	Persistent Volume Claim	A persistent volume claim to mount a directory that includes adapters and apps

How to construct the iap-asset-volume

This volume is intended to store the applications and adapters unique to a customer. Its contents will reflect a customer's unique usage of IAP and contain all of the adapters and custom applications required. There is an expectation in the container of the structure of the files in this volume. All adapters and applications can be added into the same parent directory that will then be mounted in the container.

.
├── adapter1/
├── adapter2/
├── custom-application1/
└── custom-application2/

This will be correctly translated inside the container to the appropriate directories for IAP to understand.

Values

Key	Type	Default	Description
affinity	object	{}	Additional affinities
applicationPort	int	3443	The port that the application will run on
certManager.enabled	bool	true	Toggles the use of cert-manager for managing the TLS certificates. Setting this to false means that creation of the TLS certificates will be manual and outside of the chart.
certificate.commonName	string	"iap.example.com"	The Common Name to use when creating certificates
certificate.domain	string	"example.com"	The domain to use when creating certificates. This will be used by the templates to build a complete list of hosts to enable direct access to individual pods. Some UI actions in Itential require direct access to pods.
certificate.duration	string	"2160h"	Specifies how long the certificate should be valid for (its lifetime).
certificate.enabled	bool	false	Toggle to use the certificate object or not
certificate.secretName	string	""	The name of the secret where the TLS certificate will be stored. If empty, defaults to <Chart.name>-tls-secret
certificate.issuerRef.kind	string	"Issuer"	The issuer type
certificate.issuerRef.name	string	"iap-ca-issuer"	The name of the issuer with the CA reference.
certificate.renewBefore	string	"48h"	Specifies how long before the certificate expires that cert-manager should try to renew.
env.ITENTIAL_MONGO_AUTH_ENABLED	string	"true"	Instructs the MongoDB driver to use the provided user/password when connecting to MongoDB.
env.ITENTIAL_MONGO_DB_NAME	string	"itential"	The name of the MongoDB logical database to connect to.
env.ITENTIAL_MONGO_TLS_ALLOW_INVALID_CERTIFICATES	string	"false"	If true, disables the validation checks for TLS certificates on other servers in the cluster and allows the use of invalid or self-signed certificates to connect.
env.ITENTIAL_MONGO_TLS_ENABLED	string	"false"	Instruct the MongoDB driver to use TLS protocols when connecting to the database.
env.ITENTIAL_MONGO_USER	string	"itential"	The username to use when connecting to MongoDB.
env.ITENTIAL_REDIS_HOST	string	"redis.example.com"	The hostname of the Redis server. Not used when connecting to Redis Sentinels.
env.ITENTIAL_REDIS_PORT	string	"6379"	The port to use when connecting to this Redis instance.
env.ITENTIAL_REDIS_USERNAME	string	"itential"	The username to use when connecting to Redis.
external-dns.enabled	bool	false	Optional dependency to generate a static external DNS name
image.pullPolicy	string	"IfNotPresent"	The image pull policy
image.repository	string	"497639811223.dkr.ecr.us-east-2.amazonaws.com/itential-platform"	The image repository
image.tag	string	nil	The image tag
imagePullSecrets	list	[]	The secrets object used to pull the image from the repo
ingress.annotations	object	{"alb.ingress.kubernetes.io/backend-protocol":"HTTPS","alb.ingress.kubernetes.io/healthcheck-interval-seconds":"15","alb.ingress.kubernetes.io/healthcheck-path":"/health/status","alb.ingress.kubernetes.io/healthcheck-port":"3443","alb.ingress.kubernetes.io/healthcheck-protocol":"HTTPS","alb.ingress.kubernetes.io/healthcheck-timeout-seconds":"5","alb.ingress.kubernetes.io/healthy-threshold-count":"2","alb.ingress.kubernetes.io/listen-ports":"[{\"HTTPS\": 443}]","alb.ingress.kubernetes.io/load-balancer-attributes":"idle_timeout.timeout_seconds=60","alb.ingress.kubernetes.io/load-balancer-name":"itential-iap-lb","alb.ingress.kubernetes.io/scheme":"internet-facing","alb.ingress.kubernetes.io/success-codes":"200","alb.ingress.kubernetes.io/target-type":"ip","alb.ingress.kubernetes.io/unhealthy-threshold-count":"2"}	The annotations for this ingress object. These are passed into the template as is and will render as you see here. Itential leveraged AWS ALB but others should work.
ingress.className	string	"alb"	The ingress controller class name
ingress.directAccess.baseDomain	string	"pet-sbx.itential.io"	The base domain for each Itential pod, used by the templates to create host names.
ingress.directAccess.enabled	bool	true	Enable direct access to all Itential pods.
ingress.directAccess.hostOverride	string	""	Optional host override for direct access ingress. When empty, uses iap.fullname + namespace + iterator. When set, uses hostOverride + iterator for hostname generation.
ingress.directAccess.path	string	"/"	The path
ingress.enabled	bool	true	The ingress object can be disabled and will not be created with this set to false
ingress.loadBalancer.enabled	bool	true	Enable a load balancer that will distribute request to all Itential pods
ingress.loadBalancer.host	string	"iap.pet-sbx.itential.io"	The Load balancer host name
ingress.loadBalancer.path	string	"/"	The path
ingress.name	string	"iap-ingress"	The name of this Kubernetes ingress object
ingress.pathType	string	"Prefix"	The ingress controller path type
issuer.caSecretName	string	nil	The CA secret to be used by this issuer when creating TLS certificates.
issuer.enabled	bool	true	Toggle to use the issuer object or not
issuer.name	string	"iap-ca-issuer"	The name of this issuer.
mountAdapterVolume	bool	false	Toggle a volume mount which contains adapter code. When this is set to false it is assumed that all adapters will be layered into the Itential provided container.
mountLogVolume	bool	false	Toggle a volume with will contain log files. Not required if log data is being captured from Stdout.
nodeSelector	object	{}	Additional nodeSelectors
persistentVolumeClaims.assetClaim	object	{"storage":"10Gi"}	This represents the claim for the persistence for the adapters and other custom applications that may have been developed by the customer.
persistentVolumeClaims.assetClaim.storage	string	"10Gi"	The requested amount of storage
persistentVolumeClaims.enabled	bool	true	Toggle the use of persistentVolumeClaims
persistentVolumeClaims.logClaim	object	{"storage":"10Gi"}	This represents the claim for the persistence for the log files created and written to by the IAP application.
persistentVolumeClaims.logClaim.storage	string	"10Gi"	The requested amount of storage
podAnnotations	object	{}	Additional pod annotations
podLabels	object	{}	Additional pod labels
podSecurityContext	object	{"fsGroup":1001,"runAsNonRoot":true,"runAsUser":1001}	Additional pod security context. The pods will mount some persistent volumes. These settings allow for that to happen.
processExporter.enabled	bool	true	Toggle to enable the process exporter sidecar container
processExporter.image.repository	string	"ncabatoff/process-exporter"	The process exporter image repository
processExporter.image.tag	string	"latest"	The process exporter image tag
processExporter.port	int	9256	Process exporter metrics port
replicaCount	int	2	The number of pods to start
securityContext	object	{}	Additional security context
service.name	string	"iap-service"	The name of this Kubernetes service object.
service.port	int	443	The port that this service object is listening on.
service.type	string	"ClusterIP"	The service type.
storageClass.enabled	bool	true	Toggle the use of storageClass
storageClass.name	string	"iap-ebs-gp3"	The name of the storageClass
storageClass.parameters	string	nil	Key-value pairs passed to the provisioner
storageClass.provisioner	string	""	Specifies which volume plugin provisions the storage
storageClass.reclaimPolicy	string	"Retain"	What happens to PersistentVolumes when released. Itential recommends "retain".
storageClass.volumeBindingMode	string	"WaitForFirstConsumer"	Controls when volume binding occurs
tolerations	list	[]	Additional tolerations
useTLS	bool	true	Toggle to enable TLS features and configuration.
volumeMounts	list	[]	Additional volumeMounts to output on the Statefulset definition.
volumes	list	[]	Additional volumes to output on the Statefulset definition.