One way/example to deploy Elastic Opensearch cluster with helmfile.
Opensearch cluster nodegroups are treated as separate releases (which is a major difference from deprecated opendistro charts), such releases should have the same configuration applied.
What is managed by this Helmfile deployment:
- 3 nodegroups (master, client, data) - we are operating a successor of
elasticsearch-oss - cluster TLS
- Opensearch security config + OpenID auth
- Opensearch Dashboards (ex Kibana)
- ism_policy, index_template and configurator job for these
Ensure you have a separate nodegroup for this cluster (see elastic-opensearch/values/common for node affinity settings) with max_map_count and ulimits bumped up.
Folder structure:
Common (shared) settings for releases go to values, each release under releases folder has it's own values, subgroups and templates for additional configuration.
├── elastic-opensearch
│ ├── config
│ │ ├── dashboards.tpl
│ │ ├── log4j2.properties.tpl
│ │ └── opensearch.tpl
│ ├── helmfile-templates
│ │ └── releases.yaml
│ ├── releases
│ │ ├── configurator
│ │ │ ├── opensearch
│ │ │ │ ├── index_template.gotmpl
│ │ │ │ └── ism_policy.gotmpl
│ │ │ ├── templates
│ │ │ │ ├── configurator.tpl
│ │ │ │ ├── job.tpl
│ │ │ │ └── secrets.tpl
│ │ │ └── values.yaml.gotmpl
│ │ ├── dashboards
│ │ │ ├── templates
│ │ │ │ ├── ingress.tpl
│ │ │ │ └── secrets.tpl
│ │ │ └── values.yaml.gotmpl
│ │ ├── nodegroup
│ │ │ ├── client
│ │ │ │ ├── templates
│ │ │ │ │ └── ingress.tpl
│ │ │ │ └── values.yaml.gotmpl
│ │ │ ├── data
│ │ │ │ └── values.yaml.gotmpl
│ │ │ └── master
│ │ │ └── values.yaml.gotmpl
│ │ ├── nodegroup-security-config
│ │ │ ├── opensearch
│ │ │ │ ├── action_groups.yml.gotmpl
│ │ │ │ ├── config.yml.gotmpl
│ │ │ │ ├── internal_users.yml.gotmpl
│ │ │ │ ├── roles.yml.gotmpl
│ │ │ │ ├── roles_mapping.yml.gotmpl
│ │ │ │ └── tenants.yml.gotmpl
│ │ │ ├── templates
│ │ │ │ ├── secrets.tpl
│ │ │ │ └── securityConfig.tpl
│ │ │ └── values.yaml.gotmpl
│ │ └── nodegroup-tls
│ │ ├── templates
│ │ │ ├── opensearch_tls
│ │ │ │ ├── admin_dn.tpl
│ │ │ │ ├── http.tpl
│ │ │ │ ├── nodes_dn.tpl
│ │ │ │ └── transport.tpl
│ │ │ └── secrets_mount.tpl
│ │ └── values.yaml.gotmpl
│ └── values
│ ├── node-common.yaml
│ ├── node-configurator.yaml
│ ├── node-security-config.yaml
│ └── node-tls.yaml
└── helmfile.yaml
This was tested on the cluster running cert-manager, traefik and externalDNS so some adjustment for requrementes release resources would be needed if setup is different.
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