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Disable service links to prevent very long startup times #542

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jmlrt merged 2 commits into from
Jun 17, 2020
Merged

Disable service links to prevent very long startup times #542

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63427bd
Disable service links.
Jun 16, 2020
6d888b5
Make the disabling of service links configurable.
Jun 17, 2020
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1 change: 1 addition & 0 deletions elasticsearch/README.md
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Expand Up @@ -128,6 +128,7 @@ support multiple versions with minimal changes.
| `antiAffinity` | Setting this to hard enforces the [anti-affinity][] rules. If it is set to soft it will be done "best effort". Other values will be ignored | `hard` |
| `clusterHealthCheckParams` | The [Elasticsearch cluster health status params][] that will be used by readiness [probe][] command | `wait_for_status=green&timeout=1s` |
| `clusterName` | This will be used as the Elasticsearch [cluster.name][] and should be unique per cluster in the namespace | `elasticsearch` |
| `enableServiceLinks` | Set to false to disabling service links, which can cause slow pod startup times when there are many services in the current namespace. | `true` |
| `envFrom` | Templatable string to be passed to the [environment from variables][] which will be appended to the `envFrom:` definition for the container | `[]` |
| `esConfig` | Allows you to add any config files in `/usr/share/elasticsearch/config/` such as `elasticsearch.yml` and `log4j2.properties`. See [values.yaml][] for an example of the formatting | `{}` |
| `esJavaOpts` | [Java options][] for Elasticsearch. This is where you should configure the [jvm heap size][] | `-Xmx1g -Xms1g` |
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3 changes: 3 additions & 0 deletions elasticsearch/templates/statefulset.yaml
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Expand Up @@ -143,6 +143,9 @@ spec:
{{- if .Values.imagePullSecrets }}
imagePullSecrets:
{{ toYaml .Values.imagePullSecrets | indent 8 }}
{{- end }}
{{- if semverCompare ">1.13" .Capabilities.KubeVersion.GitVersion }}
enableServiceLinks: {{ .Values.enableServiceLinks }}
{{- end }}
initContainers:
{{- if .Values.sysctlInitContainer.enabled }}
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5 changes: 5 additions & 0 deletions elasticsearch/values.yaml
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Expand Up @@ -159,6 +159,11 @@ nodeAffinity: {}
# the same time when bootstrapping the cluster
podManagementPolicy: "Parallel"

# The environment variables injected by service links are not used, but can lead to slow Elasticsearch boot times when
# there are many services in the current namespace.
# If you experience slow pod startups you probably want to set this to `false`.
enableServiceLinks: true

protocol: http
httpPort: 9200
transportPort: 9300
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