gromr1 universal Helm chart

TL;DR

$ helm repo add gromr1 https://gromr1.github.io/nxs-universal-chart
$ helm install whoami gromr1/universal-chart -f samples/whoami.yml

Use the --devel flag to access release candidate versions.

Installing the Chart

To install the chart with the release name my-release:

$ helm install my-release nixys/universal-chart -f values.yaml

The command deploys your app with custom values on the Kubernetes cluster. The Parameters section lists the parameters that can be configured during installation.

Tip: List all releases using helm list

Uninstalling the Chart

To uninstall/delete the my-release deployment:

$ helm delete my-release

The command removes all the Kubernetes components associated with the chart and deletes the release.

Parameters

Global parameters

Name	Description	Value
global.kubeVersion	Global Override Kubernetes version	""

Generic parameters

Name	Description	Value
generic.labels	Labels to add to all deployed objects	{}
generic.annotations	Annotations to add to all deployed objects	{}
generic.extraSelectorLabels	SelectorLabels to add to deployments and services	{}
generic.podLabels	Labels to add to all deployed pods	{}
generic.podAnnotations	Annotations to add to all deployed pods	{}
generic.serviceAccountName	The name of the ServiceAccount to use by workload	[]
generic.hostAliases	Pods host aliases to use by workload	[]
generic.dnsPolicy	DnsPolicy for workload pods	[]
generic.extraVolumes	Array of k8s Volumes to add to all deployed workloads	[]
generic.extraVolumeMounts	Array of k8s VolumeMounts to add to all deployed workloads	[]
generic.extraImagePullSecrets	Array of existing pull secrets to add to all deployed workloads	[]

Common parameters

Name	Description	Value
kubeVersion	Override Kubernetes version	""
nameOverride	String to override release name	""
envs	Map of environment variables which will be deplyed as ConfigMap with name RELEASE_NAME-envs	{}
envsString	String with map of environment variables which will be deplyed as ConfigMap with name RELEASE_NAME-envs	""
secretEnvs	Map of environment variables which will be deplyed as Secret with name RELEASE_NAME-secret-envs	{}
secretEnvsString	String with map of environment variables which will be deplyed as Secret with name RELEASE_NAME-secret-envs	""
imagePullSecrets	Map of registry secrets in .dockerconfigjson format	{}
defaultImage	Docker image that will be used by default	[]
defaultImageTag	Docker image tag that will be used by default	[]
defaultImagePullPolicy	Docker image pull policy that will be used by default	"IfNotPresent"
podAffinityPreset	Pod affinity preset. Ignored if workload affinity is set. Allowed values: soft or hard	soft
podAntiAffinityPreset	Pod anti-affinity preset. Ignored if workload affinity is set. Allowed values: soft or hard	soft
nodeAffinityPreset.type	Node affinity preset type. Ignored if workload affinity is set. Allowed values: soft or hard	""
nodeAffinityPreset.key	Node label key to match. Ignored if workload affinity is set	""
nodeAffinityPreset.values	Node label values to match. Ignored if workload affinity is set	[]
extraDeploy	Map of extra objects (k8s manifests or Helm templates) to deploy with the release. Example	[]
diagnosticMode.enabled	Enable diagnostic mode (all probes will be disabled and the command will be overridden)	false
diagnosticMode.command	Command to override all containers in the deployment	["sleep"]
diagnosticMode.args	Args to override all containers in the deployment	["infinity"]
releasePrefix	Override prefix for all manifests names. Release name used by default. You should use "-" to make it empty.	""

Deployments parameters

deploymentsGeneral is a map of the Deployments parameters, which uses for all Deployments.

Name	Description	Value
deploymentsGeneral.enableAffinity	Enable or disable affinity	"false"
deploymentsGeneral.labels	Labels to add to all deployments	{}
deploymentsGeneral.annotations	Annotations to add to all deployments	{}
deploymentsGeneral.extraVolumes	Array of k8s Volumes to add to all deployments	[]
deploymentsGeneral.extraVolumeMounts	Array of k8s VolumeMounts to add to all deployments	[]

deployments is a map of the Deployment parameters, where key is a name of the Deployment.

Name	Description	Value
labels	Extra labels for deployment	{}
annotations	Extra annotations for deployment	{}
replicas	Deployment replicas count	1
strategy	Deployment strategy	{}
extraSelectorLabels	Extra selectorLabels for deployment	{}
podLabels	Extra pod labels for deployment	{}
podAnnotations	Extra pod annotations for deployment	{}
serviceAccountName	The name of the ServiceAccount to use by deployment	""
hostAliases	Pods host aliases	[]
affinity	Affinity for deployment; replicas pods assignment	{}
securityContext	Security Context for deployment pods	{}
dnsPolicy	DnsPolicy for deployment pods	""
nodeSelector	Node labels for deployment; pods assignment	{}
tolerations	Tolerations for deployment; replicas pods assignment	[]
imagePullSecrets	DEPRECATED. Array of existing pull secrets	[]
extraImagePullSecrets	Array of existing pull secrets	[]
terminationGracePeriodSeconds	Integer setting the termination grace period for the pods	30
initContainers	Array of the deployment initContainers (container objects)	[]
containers	Array of the deployment Containers (container objects)	[]
volumes	Array of the deployment typed volume objects	[]
extraVolumes	Array of k8s Volumes to add to deployments	[]

Container object parameters

Name	Description	Value
name	The name of the container	""
image	Docker image of the co ntainer	""
imageTag	Docker image tag of the container	"latest"
imagePullPolicy	Docker image pull policy	"IfNotPresent"
securityContext	Security Context for container	{}
command	Container command override (list or string)	[]
commandMaxDuration	Duration of command execution (for jobs and cronJobs only)	``
commandDurationAlert	Create Prometheus Alert on command execution time exceeded (for jobs and cronJobs only)	``
args	Container arguments override	[]
envsFromConfigmap	Map of ConfigMaps and envs from it	{}
envsFromSecret	Map of Secrets and envs from it	{}
env	Array of extra environment variables	[]
envConfigmaps	Array of Configmaps names with extra envs	[]
envSecrets	Array of Secrets names with extra envs	[]
envFrom	Array of extra envFrom objects	[]
ports	Array of ports to be exposed from container	[]
lifecycle	Containers lifecycle hooks	{}
livenessProbe	Liveness probe object for container	{}
readinessProbe	Readiness probe object for container	{}
resources	The resources requests and limits for container	{}
volumeMounts	Array of the k8s Volume mounts	[]

Services parameters

services is a map of the Service parameters, where key is a name of Service.

Name	Description	Value
labels	Extra labels for service	{}
annotations	Extra annotations for service	{}
type	Type of a service	""
loadBalancerIP	IP of a service with LoadBalancer type	""
loadBalancerSourceRanges	Service Load Balancer sources	[]
externalTrafficPolicy	Service external traffic policy	"Cluster"
healthCheckNodePort	Health check node port (numeric port number) for the service	``
externalIPs	Array of the external IPs that route to one or more cluster nodes	[]
ports	Array of the service port objects	[]
extraSelectorLabels	Extra selectorLabels for select workload	{}
clusterIP	Service clusterIP parameter value	""

Service ports object parameters:

Name	Description	Value
name	Name of the service port	""
protocol	Protocol of the service port	"TCP"
port	Service port number	``
targetPort	Service target port number	``
nodePort	Service NodePort number	``

Ingresses parameters

ingresses is a map of the Ingress parameters, where key is a hostname (domain) of Ingress.

Name	Description	Value
name	Custom name of the ingress, if empty ingress hostname will be used	""
labels	Extra labels for ingress	{}
annotations	Extra annotations for ingress	{}
certManager.issuerName	CertManager issuer name for ingress TLS	""
certManager.issuerType	CertManager issuer type for ingress TLS	"cluster-issuer"
ingressClassName	The name of ingressClass to use	""
tlsName	The name of secret to use for CertManager generated TLS	""
hosts	Array of the ingress hosts objects	[]
extraTls	Array of the ingress tls params	[]

Ingress hosts object parameters

Name	Description	Value
hostname	Hostname to serve by ingress, if empty ingress hostname will be used	""
paths	Array of the ingress paths objects	[]

Ingress paths object parameters

Name	Description	Value
path	URL path	"/"
pathType	Type of the ingress path see for details	"Prefix"
serviceName	Name of the service to route requests	""
servicePort	Name or number of the service port to route requests	""

Secrets parameters

secrets is a map of the Secret parameters, where key is a name of Secret.

Name	Description	Value
type	Secret type	"Opaque"
labels	Extra secret labels	{}
annotations	Extra secret annotations	{}
data	Map of Secret data	{}

Secret data object is a map where value can be a string, json or base64 encoded string with prefix b64:.

ConfigMaps parameters

configMaps is a map of the ConfigMap parameters, where key is a name of ConfigMap.

Name	Description	Value
labels	Extra ConfigMap labels	{}
annotations	Extra ConfigMap annotations	{}
data	Map of ConfigMap data	{}

PersistentVolumeClaims parameters

pvcs is a map of the PersistentVolumeClaim parameters, where key is a name of PersistentVolumeClaim.

Name	Description	Value
labels	Extra Persistent Volume Claim labels	{}
annotations	Extra Persistent Volume Claim annotations	{}
accessModes	Persistent Volume access modes	[]
volumeMode	Persistent Volume volume mode	"Filesystem"
storageClassName	Persistent Volume Storage Class name	""
selector	Labels selector to further filter the set of volumes	{}

Hooks parameters

hooksGeneral is a map of the Helm Hooks Jobs parameters, which uses for all Helm Hooks Jobs.

Name	Description	Value
hooksGeneral.labels	Extra labels for all Hook Job	{}
hooksGeneral.annotations	Extra annotations for all Hook Job	{}
hooksGeneral.parallelism	How much Jobs can be run in parallel (ignored if defined on Hook level)	1
hooksGeneral.completions	How much Pods should finish to finish Job (ignored if defined on Hook level)	1
hooksGeneral.activeDeadlineSeconds	Duration of the Job (ignored if defined on Hook level)	100
hooksGeneral.backoffLimit	Number of retries before considering a Job as failed (ignored if defined on Hook level)	6
hooksGeneral.ttlSecondsAfterFinished	TTL for delete finished Hook Job (ignored if defined on Hook level)	100
hooksGeneral.podLabels	Extra pod labels for Hook Job (ignored if defined on Hook level)	{}
hooksGeneral.podAnnotations	Extra pod annotations for Hook Job (ignored if defined on Hook level)	{}
hooksGeneral.serviceAccountName	The name of the ServiceAccount to use by Hook Job (ignored if defined on Hook level)	""
hooksGeneral.hostAliases	Pods host aliases (ignored if defined on Hook level)	[]
hooksGeneral.affinity	Affinity for Hook Job; replicas pods assignment (ignored if defined on Hook level)	{}
hooksGeneral.dnsPolicy	DnsPolicy for Hook Job pods (ignored if defined on Hook level)	""

hooks is a map of the Helm Hooks Jobs parameters, where key is name of the Helm Hook job.

Name	Description	Value
labels	Extra Hook Job labels	{}
annotations	Extra Hook Job annotations	{}
kind	Kind of the Helm Hook	"pre-install,pre-upgrade"
weight	Weight of the Helm Hook	"5"
deletePolicy	Delete Policy of the Helm Hook	"before-hook-creation"
parallelism	How much pods of Jobs can be run in parallel	1
completions	How much pods should finish to finish Job	1
activeDeadlineSeconds	Duration of the Job	100
backoffLimit	Number of retries before considering a Job as failed	6
ttlSecondsAfterFinished	TTL for delete finished Hook Job	100
podLabels	Extra pod labels for Hook Job	{}
podAnnotations	Extra pod annotations for Hook Job	{}
serviceAccountName	The name of the ServiceAccount to use by Hook Job	""
hostAliases	Pods host aliases	[]
affinity	Affinity for Hook Job; replicas pods assignment	{}
securityContext	Security Context for Hook Job pods	{}
dnsPolicy	DnsPolicy for Hook Job pods	""
nodeSelector	Node labels for Hook Job; pods assignment	{}
tolerations	Tolerations for Hook Job; replicas pods assignment	[]
imagePullSecrets	DEPRECATED. Array of existing pull secrets	[]
extraImagePullSecrets	Array of existing pull secrets	[]
initContainers	Array of the Hook Job initContainers (container objects)	[]
containers	Array of the Hook Job Containers (container objects)	[]
volumes	Array of the Hook Job typed volumes	[]
extraVolumes	Array of k8s Volumes to add to Hook Job	[]
restartPolicy	Restart Policy of the Hook Job	"Never"

Jobs parameters

jobsGeneral is a map of the Jobs parameters, which uses for all Jobs.

Name	Description	Value
jobsGeneral.labels	Extra labels for all Job	{}
jobsGeneral.annotations	Extra annotations for all Job	{}
jobsGeneral.parallelism	How much Jobs can be run in parallel (ignored if defined on Job level)	1
jobsGeneral.completions	How much Pods should finish to finish Job (ignored if defined on Job level)	1
jobsGeneral.activeDeadlineSeconds	Duration of the Job (ignored if defined on Job level)	100
jobsGeneral.backoffLimit	Number of retries before considering a Job as failed (ignored if defined on Job level)	6
jobsGeneral.ttlSecondsAfterFinished	TTL for delete finished Job (ignored if defined on Job level)	100
jobsGeneral.podLabels	Extra pod labels for Job (ignored if defined on Job level)	{}
jobsGeneral.podAnnotations	Extra pod annotations for Job (ignored if defined on Job level)	{}
jobsGeneral.serviceAccountName	The name of the ServiceAccount to use by Job (ignored if defined on Job level)	""
jobsGeneral.hostAliases	Pods host aliases (ignored if defined on Job level)	[]
jobsGeneral.affinity	Affinity for Job; replicas pods assignment (ignored if defined on Job level)	{}
jobsGeneral.dnsPolicy	DnsPolicy for Job pods (ignored if defined on Job level)	""

jobs is a map of the Jobs parameters, where key is a name of the Job.

Name	Description	Value
labels	Extra Job labels	{}
annotations	Extra Job annotations	{}
parallelism	How much pods of Job can be run in parallel	1
completions	How much pods should finish to finish Job	1
activeDeadlineSeconds	Duration of the Job	100
backoffLimit	Number of retries before considering a Job as failed	6
ttlSecondsAfterFinished	TTL for delete finished Hook Job	100
podLabels	Extra pod labels for Hook Job	{}
podAnnotations	Extra pod annotations for Hook Job	{}
serviceAccountName	The name of the ServiceAccount to use by deployment	""
hostAliases	Pods host aliases	[]
affinity	Affinity for Hook Job; replicas pods assignment	{}
securityContext	Security Context for Hook Job pods	{}
dnsPolicy	DnsPolicy for Hook Job pods	""
nodeSelector	Node labels for Hook Job; pods assignment	{}
tolerations	Tolerations for Hook Job; replicas pods assignment	[]
imagePullSecrets	DEPRECATED. Array of existing pull secrets	[]
extraImagePullSecrets	Array of existing pull secrets	[]
initContainers	Array of the Hook Job initContainers (container objects)	[]
containers	Array of the Hook Job Containers (container objects)	[]
volumes	Array of the Hook Job typed volumes	[]
extraVolumes	Array of k8s Volumes to add to Hook Job	[]
restartPolicy	Restart Policy of the Job	"Never"

CronJobs parameters

cronJobsGeneral is a map of the CronJobs parameters, which uses for all CronJobs.

Name	Description	Value
cronJobsGeneral.labels	Extra labels for all CronJobs	{}
cronJobsGeneral.annotations	Extra annotations for all CronJobs	{}
cronJobsGeneral.startingDeadlineSeconds	Duration for starting all CronJobs (ignored if defined on CronJob level)	``
cronJobsGeneral.successfulJobsHistoryLimit	Limitation of completed jobs should be kept (ignored if defined on CronJob level)	3
cronJobsGeneral.failedJobsHistoryLimit	Limitation of failed jobs should be kept (ignored if defined on CronJob level)	1
cronJobsGeneral.parallelism	How much pods of Job can be run in parallel (ignored if defined on CronJob level)	1
cronJobsGeneral.completions	How much pods should finish to finish Job (ignored if defined on CronJob level)	1
cronJobsGeneral.activeDeadlineSeconds	Duration of the Job (ignored if defined on CronJob level)	100
cronJobsGeneral.backoffLimit	Number of retries before considering a Job as failed (ignored if defined on CronJob level)	6
cronJobsGeneral.ttlSecondsAfterFinished	TTL for delete finished Jobs (ignored if defined on CronJob level)	100
cronJobsGeneral.podLabels	Extra pod labels for CronJob (ignored if defined on CronJob level)	{}
cronJobsGeneral.podAnnotations	Extra pod annotations for CronJob (ignored if defined on CronJob level)	{}
cronJobsGeneral.serviceAccountName	The name of the ServiceAccount to use by Job (ignored if defined on CronJob level)	""
cronJobsGeneral.hostAliases	Pods host aliases (ignored if defined on CronJob level)	[]
cronJobsGeneral.affinity	Affinity for CronJob; replicas pods assignment (ignored if defined on CronJob level)	{}
cronJobsGeneral.dnsPolicy	DnsPolicy for CronJob pods (ignored if defined on CronJob level)	""

cronJobs is a map of the CronJobs parameters, where key is name of the CronJob.

Name	Description	Value
labels	Extra CronJob labels	{}
annotations	Extra CronJob annotations	{}
singleOnly	Forbid concurrency policy	"false"
startingDeadlineSeconds	Duration for starting CronJob	``
successfulJobsHistoryLimit	Limitation of completed jobs should be kept	3
failedJobsHistoryLimit	Limitation of failed jobs should be kept	1
parallelism	How much pods of CronJob can be run in parallel	1
completions	How much pods should finish to finish Job	1
activeDeadlineSeconds	Duration of the Job	100
backoffLimit	Number of retries before considering a Job as failed	6
ttlSecondsAfterFinished	TTL for delete finished CronJob	100
podLabels	Extra pod labels for CronJob	{}
podAnnotations	Extra pod annotations for CronJob	{}
serviceAccountName	The name of the ServiceAccount to use by CronJob	""
hostAliases	Pods host aliases	[]
affinity	Affinity for CronJob; replicas pods assignment	{}
securityContext	Security Context for CronJob pods	{}
dnsPolicy	DnsPolicy for CronJob pods	""
nodeSelector	Node labels for CronJob; pods assignment	{}
tolerations	Tolerations for CronJob; replicas pods assignment	[]
imagePullSecrets	DEPRECATED. Array of existing pull secrets	[]
extraImagePullSecrets	Array of existing pull secrets	[]
initContainers	Array of the CronJob initContainers (container objects)	[]
containers	Array of the CronJob Containers (container objects)	[]
volumes	Array of the CronJob typed volumes	[]
extraVolumes	Array of k8s Volumes to add to CronJob	[]
restartPolicy	Restart Policy of the Jobs	"Never"

ServiceMonitors parameters

serviceMonitors is a map of the Prometheus ServiceMonitor parameters, where key is name of ServiceMonitor.

Name	Description	Value
labels	Extra ServiceMonitor labels	{}
endpoints	Array of ServiceMonitor endpoints	[]
extraSelectorLabels	Extra selectorLabels for select workload	{}

typed Volumes parameters

Name	Description	Value
type	Resource type of the volume ("configMap","secret","pvc")	""
name	Name of the resource that will be used with release prefix	""
originalName	Original name of the resource	""
items	Array of volume items	[]

PodDisruptionBudget parameters

pdbs is a map of the PDB parameters, where key is a name

Name	Description	Value
labels	Extra PDB labels	{}
minAvailable	Pods that must be available after the eviction	""
maxUnavailable	Pods that can be unavailable after the eviction	""
extraSelectorLabels	Extra selectorLabels for select workload	{}

HorizontalPodAutoscaler parameters

hpas is map of HPA parameters, where key is a name

Name	Description	Value
labels	Extra HPA labels	{}
annotations	Extra HPA annotations	{}
apiVersion	apiVersion for HPA object	"autoscaling/v2beta1"
minReplicas	minimum replicas for HPA	2
maxReplicas	maximum replicas for HPA	3
scaleTargetRef	Required scaleTargetRef object
targetCPU	target CPU utilization percentage	""
targetMemory	target memory utilization percentage	""
metrics	list of custom metrics	[]

HPA scaleTargetRef object parameters

Name	Description	Value
apiVersion	apiVersion for target HPA object	"apps/v1"
kind	kind for target HPA object	"Deployment"
name	Required name of target object	""

Configuration and installation details

Using private registries

To use images from private registers, add your ".dockerauthconfig" to imagePullSecrets in the common block. This will create secrets that include auth from the register and will be used in all workloads.

imagePullSecrets:
  my-registry: |
    {"auths":{"registry.org":{"auth":"cnd1c2VyOnNlY3VyZVBANXM="}}}
  some-private-hub: b64:eyJhdXRocyI6eyJyZWdpc3RyeS5vcmciOnsiYXV0aCI6ImNuZDFjMlZ5T25ObFkzVnlaVkJBTlhNPSJ9fX0=

If a secrets with registry credentials already was added to namespace, you can use generic.extraImagePullSecrets to add pull secrets to all your workloads or extraImagePullSecrets directly in the workload like in k8s manifest by specifying names of the corresponding secrets.

generic:
  extraImagePullSecrets:
  - name: my-registry-secret-name

deployments:
  my-app:
    ...
    extraImagePullSecrets:
    - name: my-registry-secret-name
    ...

Additional features

Secrets features

Working with the secrets data you can use values with the next types

• string - usual string values will be encoded to base64 string
• base64 encoded string with b64: prefix - value will be used as is without prefix
• json - json will be encoded to base64 string

Secret from string

Values file:

secrets:
  secret-file:
    data:
      api.key: "JFczZwReBkJFczZwReBkJFczZwReBkJFczZwReBk"
  extra-envs:
    data:
      BAR: foo

--set analog:

--set "secrets.secret-file.data.api\.key=$SOME_ENV_WITH_STRING"
--set "secrets.extra-envs.data.BAR=foo"

Secret from base64 encoded string

Values file:

secrets:
  secret-file:
    data:
      api.key: "b64:SkZjelp3UmVCa0pGY3pad1JlQmtKRmN6WndSZUJrSkZjelp3UmVCaw=="

--set analog:

--set "secrets.secret-file.data.api\.key=b64:$(echo -n $SOME_ENV|base64 -w0)"

Secret from json

Values file:

secrets:
  json-file:
    data:
      file.json: {
        "arg": "value"
      }

--set analog:

--set "secrets.json-file.data.file\.json=$(printf %q $(cat file.json))"

or

--set-file "secrets.json-file.data.file\.json=path/to/file.json"

Values Templating features

You can use go-templates as part of your values.

Note Use single quotes to escape strings containing templates to avoid manifest generation errors.

Example 1.

Add a pod annotation wih the check sum of the application configuration.

deployments:
  api:
    podAnnotations:
      checksum/app-cfg: '{{ include "helpers.workload.checksum" (index $.Values.configMaps "app-config") }}'

Example 2.

Specify docker images via the --set flag for multiple deployments.

deployments:
  app1:
    containers:
    - name: app1
      image: '{{ $.Values.imageRepo1 }}/{{ $.Values.imageApp1 }}'
      imageTag: '{{ $.Values.imageTagApp1 }}'
  ...
  app2:
    containers:
    - name: app1
      image: '{{ $.Values.imageRepo2 }}/{{ $.Values.imageApp2 }}'
      imageTag: '{{ $.Values.imageTagApp2 }}'

Create release with --set flag

helm install my-apps nixys/universal-chart -f values.yaml --set imageRepo1=reg.app.com,imageRepo2=reg.app.net,imageApp1=my-app1,imageTagApp1=v1,imageApp2=my-app2,imageTagApp2=v2

Example 3.

Deploy of NetworkPolicy using extraDeploy.

extraDeploy:
  net-pol: |-
    apiVersion: networking.k8s.io/v1
    kind: NetworkPolicy
    metadata:
      name: {{ include "helpers.app.fullname" (dict "name" "nw-policy" "context" $) }}
      namespace: {{ .Release.Namespace | quote }}
    spec:
      podSelector:
        matchLabels:
          role: db
      policyTypes:
      - Ingress
      - Egress
      ingress:
      - from:
        - ipBlock:
            cidr: 172.17.0.0/16
            except:
            - 172.17.1.0/24
        - namespaceSelector:
            matchLabels:
              project: myproject
        - podSelector:
            matchLabels:
              role: frontend
        ports:
        - protocol: TCP
          port: 6379
      egress:
      - to:
        - ipBlock:
            cidr: 10.0.0.0/24
        ports:
        - protocol: TCP
          port: 5978