helm-charts

OpenNMS Helm Charts – Horizon

If your organization uses Kubernetes or Red Hat OpenShift, OpenNMS makes a Helm chart available to simplify deployment of Horizon and Meridian.

Note that this is one way to approach the solution. We recommend that you study the content of the Helm chart and tune it for your needs.

For more information about deploying in a containerized environment, including requirements and external dependencies, refer to Containerized Deployment in the main product documentation.

If you are not already familiar with Horizon or Meridian, we recommend reviewing our product documentation (Horizon, Meridian) and our Horizon or Meridian websites.

Quick Start

Use the following commands to bring up an instance of Horizon for testing:

helm repo add opennms https://opennms.github.io/helm-charts

helm install monms opennms/horizon --set domain=domain1.com  --create-namespace

Version compatibility

Helm chart version	Horizon version(s)	Meridian version(s)
1.x	Horizon 32.x	Meridian 2023.x

Overlay ConfigMaps

The chart supports specifying a list of ConfigMaps with core.overlayConfigMaps that will be copied to the OpenNMS container overlay directory in the init container. This can be used to provide configuration files for OpenNMS. There are two ways to provide content in each ConfigMap:

Plain files

Provide one or more plain files (text and/or binary) in the ConfigMap and specify the directory where these files will be copied.

Here is a configuration example:

core:
  overlayConfigMaps:
    - name: "my-etc-files"
      path: "etc"

Here is an example of how to create the ConfigMap:

instance=<helm release name> # make sure to set to your Helm release name
configmap=my-etc-files

mkdir etc
date > etc/testing-configmap

kubectl create configmap -n $instance $configmap --from-file=etc

ZIP files

Provide one or more ZIP files in the ConfigMap, and each will be extracted in alphabetical order at the root of the overlay directory.

Here is a configuration example:

core:
  overlayConfigMaps:
    - name: "my-zip-files"
      unzip: true

Here is an example of how to create the ConfigMap:

instance=<helm release name> # make sure to set to your Helm release name
configmap=my-zip-files

mkdir -p zip/etc
dd if=/dev/zero bs=1k count=5000 of=zip/etc/lots-of-zeros # make a 5 MB test file
( cd zip && zip -r -o ../lots-of-zeros.zip . )

kubectl create configmap -n $instance $configmap --from-file=lots-of-zeros.zip

Overlay ConfigMap Notes

1. This mechanism can be used only to add files. When etc files are copied into the onms-etc-pvc PVC, removing a file from the ConfigMap will not cause the file in the PVC to be deleted. In this case, you will need to delete the file manually after updating the ConfigMap to remove the file. You can do this with kubectl exec -n $instance onms-core-0 -- rm etc/testing-configmap.
2. ConfigMaps cannot contain recursive directory structures–only files. If you need to put files into multiple directories, each directory will need to be its own ConfigMap. kubectl create configmap will silently ignore subdirectories.
3. ConfigMaps can’t be larger than 1 MB (see the note here. If you have more content, you will need to split it across multiple ConfigMaps or compressed into ZIP files.
4. Use kubectl delete configmap -n $instance $configmap to delete an existing ConfigMap before updating.
5. After updating a ConfigMap, you will need to restart the pod; for example, kubectl rollout restart -n $instance statefulset/onms-core
6. You can use kubectl get configmap -n $instance $configmap -o yaml to view the ConfigMap that is created.
7. Due to file ownership, some files/directories might not be updatable in the container at runtime. A workaround is to build a modified container that updates permissions with chmod -R g=u ... on the affected files/directories. See the OpenNMS core Dockerfile for which directories have been updated to allow writes out of the box.

Values

Key	Type	Default	Description
core.configuration.affinity	string	nil
core.configuration.alecImage	object	{}
core.configuration.alwaysRollDeployment	bool	true
core.configuration.cortexTssImage	object	{}
core.configuration.database.password	string	"0p3nNM5"
core.configuration.database.poolSize	int	50
core.configuration.database.username	string	"opennms"
core.configuration.enableAcls	bool	false
core.configuration.enableAlec	bool	false
core.configuration.enableCortex	bool	false
core.configuration.enableTssDualWrite	bool	false
core.configuration.etcUpdatePolicy	string	"never"
core.configuration.http.adminPassword	string	"admin"
core.configuration.http.restPassword	string	"admin"
core.configuration.http.restUsername	string	"opennms"
core.configuration.nodeSelector	string	nil
core.configuration.ports.karaf.enabled	bool	true
core.configuration.ports.karaf.externalPort	int	8101
core.configuration.ports.syslog.enabled	bool	true
core.configuration.ports.syslog.externalPort	int	10514
core.configuration.ports.trapd.enabled	bool	true
core.configuration.ports.trapd.externalPort	int	1162
core.configuration.rras[0]	string	"RRA:AVERAGE:0.5:1:2016"
core.configuration.rras[1]	string	"RRA:AVERAGE:0.5:12:1488"
core.configuration.rras[2]	string	"RRA:AVERAGE:0.5:288:366"
core.configuration.rras[3]	string	"RRA:MAX:0.5:288:366"
core.configuration.rras[4]	string	"RRA:MIN:0.5:288:366"
core.configuration.storage.etc	string	"1Gi"
core.configuration.storage.mibs	string	nil
core.configuration.storage.rrd	string	"1000Gi"
core.configuration.tolerations	string	nil
core.env	object	{}	Environment variables to set on the onms container.
core.image.pullPolicy	string	"IfNotPresent"
core.image.repository	string	"opennms/horizon"
core.image.tag	string	""
core.initContainers	list	[]	Experimental: a list of additional init containers
core.inspector.enabled	bool	false
core.overlayConfigMaps	list	[]
core.postConfigJob.ttlSecondsAfterFinished	int	300
core.resources.limits.cpu	string	"2"
core.resources.limits.memory	string	"8Gi"
core.resources.requests.cpu	string	"2"
core.resources.requests.memory	string	"4Gi"
core.terminationGracePeriodSeconds	int	120
createNamespace	bool	false	Whether to create the namespace when releaseNamespace=true. Has no effect otherwise.
dependencies.clusterRole	bool	true
dependencies.clusterRoleBinding	bool	true
dependencies.cortex.bulkheadMaxWaitDuration	string	"9223372036854775807"
dependencies.cortex.externalTagsCacheSize	int	1000
dependencies.cortex.maxConcurrentHttpConnections	int	100
dependencies.cortex.metricCacheSize	int	1000
dependencies.cortex.organizationId	string	""	Specify the X-Scope-OrgID header. This will override the tenant name when multiTenant=true.
dependencies.cortex.readTimeoutInMs	int	1000
dependencies.cortex.readUrl	string	"http://cortex-query-frontend.shared.svc.cluster.local:8080/prometheus/api/v1"
dependencies.cortex.writeTimeoutInMs	int	1000
dependencies.cortex.writeUrl	string	"http://cortex-distributor.shared.svc.cluster.local:8080/api/v1/push"
dependencies.elasticsearch.configuration.flows.indexStrategy	string	"daily"
dependencies.elasticsearch.configuration.flows.numShards	int	1
dependencies.elasticsearch.configuration.flows.replicationFactor	int	0
dependencies.elasticsearch.hostname	string	""
dependencies.elasticsearch.password	string	"31@st1c"
dependencies.elasticsearch.port	int	9200
dependencies.elasticsearch.username	string	"elastic"
dependencies.kafka.configuration.saslMechanism	string	"SCRAM-SHA-512"
dependencies.kafka.configuration.securityProtocol	string	"SASL_SSL"
dependencies.kafka.hostname	string	""
dependencies.kafka.password	string	"0p3nNM5"
dependencies.kafka.port	int	9093
dependencies.kafka.username	string	"opennms"
dependencies.loki.caCert	string	""
dependencies.loki.hostname	string	""
dependencies.loki.password	string	""
dependencies.loki.port	int	3100
dependencies.loki.username	string	""
dependencies.postgresql.caCert	string	""
dependencies.postgresql.hostname	string	"onms-db.shared.svc"
dependencies.postgresql.password	string	"P0stgr3s"
dependencies.postgresql.port	int	5432
dependencies.postgresql.sslfactory	string	"org.postgresql.ssl.LibPQFactory"
dependencies.postgresql.sslmode	string	"require"
dependencies.postgresql.username	string	"postgres"
dependencies.route	bool	true
dependencies.securitycontext.allowPrivilegeEscalation	bool	true
dependencies.securitycontext.allowedCapabilities[0]	string	"NET_BIND_SERVICE"
dependencies.securitycontext.allowedCapabilities[1]	string	"CAP_NET_RAW"
dependencies.securitycontext.securitycontextconstraints.enabled	bool	true
dependencies.securitycontext.securitycontextconstraints.name	string	"opennms-scc"
dependencies.securitycontext.serviceaccount.enabled	bool	true
dependencies.securitycontext.serviceaccount.name	string	"opennms-sa"
dependencies.truststore.content	string	""
dependencies.truststore.password	string	"0p3nNM5"
domain	string	"example.com"
grafana.configuration.database.image.pullPolicy	string	"IfNotPresent"
grafana.configuration.database.image.repository	string	"postgres"
grafana.configuration.database.image.tag	string	"13"
grafana.configuration.database.password	string	"Gr@f@n@"
grafana.configuration.database.sslmode	string	"require"
grafana.configuration.database.username	string	"grafana"
grafana.configuration.ui.adminPassword	string	"admin"
grafana.image.pullPolicy	string	"IfNotPresent"
grafana.image.repository	string	"opennms/helm"
grafana.image.tag	string	"9.0.10"
grafana.imageRenderer.image.pullPolicy	string	"IfNotPresent"
grafana.imageRenderer.image.repository	string	"grafana/grafana-image-renderer"
grafana.imageRenderer.image.tag	string	"latest"
grafana.imageRenderer.replicaCount	int	2
grafana.imageRenderer.resources.limits.cpu	string	"200m"
grafana.imageRenderer.resources.limits.memory	string	"256Mi"
grafana.imageRenderer.resources.requests.cpu	string	"100m"
grafana.imageRenderer.resources.requests.memory	string	"128Mi"
grafana.replicaCount	int	0
grafana.resources.limits.cpu	string	"200m"
grafana.resources.limits.memory	string	"1Gi"
grafana.resources.requests.cpu	string	"100m"
grafana.resources.requests.memory	string	"1Gi"
imagePullSecrets	list	[]
ingress.annotations	object	{}
ingress.certManager.clusterIssuer	string	"opennms-issuer"
ingress.className	string	"nginx"
multiTenant	bool	false	Enable multi-tenant mode. This will use the release name as the per-tenant identifier for the OpenNMS instance ID, databases, Kakfa topics, ElasticSearch indices, and Prometheus organization ID.
promtail.image.pullPolicy	string	"IfNotPresent"
promtail.image.repository	string	"grafana/promtail"
promtail.image.tag	string	"latest"
promtail.resources.limits.cpu	string	"50m"
promtail.resources.limits.memory	string	"64Mi"
releaseNamespace	bool	false	Install resource objects into namespace named for the Helm release. See also createNamespace.
sentinel.configuration.database.poolSize	int	25
sentinel.image.pullPolicy	string	"IfNotPresent"
sentinel.image.repository	string	"opennms/sentinel"
sentinel.image.tag	string	""
sentinel.replicaCount	int	0
sentinel.resources.limits.cpu	string	"2"
sentinel.resources.limits.memory	string	"4Gi"
sentinel.resources.requests.cpu	string	"2"
sentinel.resources.requests.memory	string	"2Gi"
sentinel.terminationGracePeriodSeconds	int	60
timezone	string	"America/New_York"

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Autogenerated from chart metadata using helm-docs v1.11.3

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