When I create values.yaml and paste in the values provided, replacing the endpoint and credentials with my local Minio instance, then run helm install loki grafana/loki --values values.yaml it returns “Error: INSTALLATION FAILED: execution error at (loki/templates/validate.yaml:40:4): You must provide a schema_config for Loki, one is not provided as this will be individual for every Loki cluster. See Storage schema | Grafana Loki documentation for schema information. For quick testing (with no persistence) add --set loki.useTestSchema=true”
Taking this further, I decided to grab the values from the chart with helm show values grafana/loki > values.yaml and then updated the values in loki.storage.s3 along with adding a schemaConfig. When trying to deploy that, I get a different error:
rror: INSTALLATION FAILED: template: loki/templates/write/statefulset-write.yaml:50:28: executing "loki/templates/write/statefulset-write.yaml" at <include (print .Template.BasePath "/config.yaml") .>: error calling include: template: loki/templates/config.yaml:19:7: executing "loki/templates/config.yaml" at <include "loki.calculatedConfig" .>: error calling include: template: loki/templates/_helpers.tpl:537:24: executing "loki.calculatedConfig" at <tpl .Values.loki.config .>: error calling tpl: error during tpl function execution for "{{- if .Values.enterprise.enabled}}\n{{- tpl .Values.enterprise.config . }}\n{{- else }}\nauth_enabled: {{ .Values.loki.auth_enabled }}\n{{- end }}\n\n{{- with .Values.loki.server }}\nserver:\n {{- toYaml . | nindent 2}}\n{{- end}}\n\npattern_ingester:\n enabled: {{ .Values.loki.pattern_ingester.enabled }}\n\nmemberlist:\n{{- if .Values.loki.memberlistConfig }}\n {{- toYaml .Values.loki.memberlistConfig | nindent 2 }}\n{{- else }}\n{{- if .Values.loki.extraMemberlistConfig}}\n{{- toYaml .Values.loki.extraMemberlistConfig | nindent 2}}\n{{- end }}\n join_members:\n - {{ include \"loki.memberlist\" . }}\n {{- with .Values.migrate.fromDistributed }}\n {{- if .enabled }}\n - {{ .memberlistService }}\n {{- end }}\n {{- end }}\n{{- end }}\n\n{{- with .Values.loki.ingester }}\ningester:\n {{- tpl (. | toYaml) $ | nindent 4 }}\n{{- end }}\n\n{{- if .Values.loki.commonConfig}}\ncommon:\n{{- toYaml .Values.loki.commonConfig | nindent 2}}\n storage:\n {{- include \"loki.commonStorageConfig\" . | nindent 4}}\n{{- end}}\n\n{{- with .Values.loki.limits_config }}\nlimits_config:\n {{- tpl (. | toYaml) $ | nindent 4 }}\n{{- end }}\n\nruntime_config:\n file: /etc/loki/runtime-config/runtime-config.yaml\n\n{{- with .Values.chunksCache }}\n{{- if .enabled }}\nchunk_store_config:\n chunk_cache_config:\n default_validity: {{ .defaultValidity }}\n background:\n writeback_goroutines: {{ .writebackParallelism }}\n writeback_buffer: {{ .writebackBuffer }}\n writeback_size_limit: {{ .writebackSizeLimit }}\n memcached:\n batch_size: {{ .batchSize }}\n parallelism: {{ .parallelism }}\n memcached_client:\n addresses: dnssrvnoa+_memcached-client._tcp.{{ template \"loki.fullname\" $ }}-chunks-cache.{{ $.Release.Namespace }}.svc\n consistent_hash: true\n timeout: {{ .timeout }}\n max_idle_conns: 72\n{{- end }}\n{{- end }}\n\n{{- if .Values.loki.schemaConfig }}\nschema_config:\n{{- toYaml .Values.loki.schemaConfig | nindent 2}}\n{{- end }}\n\n{{- if .Values.loki.useTestSchema }}\nschema_config:\n{{- toYaml .Values.loki.testSchemaConfig | nindent 2}}\n{{- end }}\n\n{{ include \"loki.rulerConfig\" . }}\n\n{{- if or .Values.tableManager.retention_deletes_enabled .Values.tableManager.retention_period }}\ntable_manager:\n retention_deletes_enabled: {{ .Values.tableManager.retention_deletes_enabled }}\n retention_period: {{ .Values.tableManager.retention_period }}\n{{- end }}\n\nquery_range:\n align_queries_with_step: true\n {{- with .Values.loki.query_range }}\n {{- tpl (. | toYaml) $ | nindent 4 }}\n {{- end }}\n {{- if .Values.resultsCache.enabled }}\n {{- with .Values.resultsCache }}\n cache_results: true\n results_cache:\n cache:\n default_validity: {{ .defaultValidity }}\n background:\n writeback_goroutines: {{ .writebackParallelism }}\n writeback_buffer: {{ .writebackBuffer }}\n writeback_size_limit: {{ .writebackSizeLimit }}\n memcached_client:\n consistent_hash: true\n addresses: dnssrvnoa+_memcached-client._tcp.{{ template \"loki.fullname\" $ }}-results-cache.{{ $.Release.Namespace }}.svc\n timeout: {{ .timeout }}\n update_interval: 1m\n {{- end }}\n {{- end }}\n\n{{- with .Values.loki.storage_config }}\nstorage_config:\n {{- tpl (. | toYaml) $ | nindent 4 }}\n{{- end }}\n\n{{- with .Values.loki.query_scheduler }}\nquery_scheduler:\n {{- tpl (. | toYaml) $ | nindent 4 }}\n{{- end }}\n\n{{- with .Values.loki.compactor }}\ncompactor:\n {{- tpl (. | toYaml) $ | nindent 4 }}\n{{- end }}\n\n{{- with .Values.loki.analytics }}\nanalytics:\n {{- tpl (. | toYaml) $ | nindent 4 }}\n{{- end }}\n\n{{- with .Values.loki.querier }}\nquerier:\n {{- tpl (. | toYaml) $ | nindent 4 }}\n{{- end }}\n\n{{- with .Values.loki.index_gateway }}\nindex_gateway:\n {{- tpl (. | toYaml) $ | nindent 4 }}\n{{- end }}\n\n{{- with .Values.loki.frontend }}\nfrontend:\n {{- tpl (. | toYaml) $ | nindent 4 }}\n{{- end }}\n\n{{- with .Values.loki.frontend_worker }}\nfrontend_worker:\n {{- tpl (. | toYaml) $ | nindent 4 }}\n{{- end }}\n\n{{- with .Values.loki.distributor }}\ndistributor:\n {{- tpl (. | toYaml) $ | nindent 4 }}\n{{- end }}\n\ntracing:\n enabled: {{ .Values.loki.tracing.enabled }}\n": template: gotpl:40:6: executing "gotpl" at <include "loki.commonStorageConfig" .>: error calling include: template: loki/templates/_helpers.tpl:228:19: executing "loki.commonStorageConfig" at <$.Values.loki.storage.bucketNames.chunks>: nil pointer evaluating interface {}.chunks
I read that someone had to enable the built in minio, so I tried setting that to true and it seemed to deploy the chart after that. I don’t want to use the built in Minio, I want to use my existing Minio instance. How can I accomplish this? I don’t understand the helm chart and the documentation doesn’t go into enough detail.
Hi @linucksrox, really sorry you are struggling here. There where some recent changes to the Loki helm which put this part of the docs out of date. Currently updating. To help in the mean time:
This works on my end for simple scalable using minIO
Thank you. The values.yaml you provided work, however that’s still using the Minio built into the chart. I want to point Loki to my pre-existing Minio instance instead, and leave minio.enabled=false in the helm chart. This is where I run into issues with the deployment.
Here is my modified version of values.yaml that is failing:
Hi @linucksrox,
Aaah thank you for explaining further. Do you have any further logs ? or do you still receive the original message in your post based on the new config?
@jayclifford thank you! That works for me! I had to change back to SimpleScalable mode and adjust the number of replicas for the individual components but it is deploying now. My next step will be figuring out how to run grafana and integrate loki, but I’m good with learning that on my own unless you have some suggestions there!
Thanks again!
Hi @linucksrox,
Really glad it worked out ! Sounds awesome, I believe I can help you out a little there. So Grafana does have its own helm. The OSS build isn’t natively HA but does give you a nice deployment method. Deploy Grafana using Helm Charts | Grafana documentation
The helm is currently 1 version behind (10.4) Grafana 11 is now released.
Error: create: failed to create: Request entity too large: limit is 3145728
When looking into the local helm cache directory in /home/mukesh/.cache/helm/repository I found that the added repo is of greater size than that of limit.
I am still facing the “nil pointer evaluating interface {}.chunks” issue on my end…I tried installing version 6.6.6, 6.8.0 and 6.9.0…not sure what could be the problem…
! Sounds awesome, I believe I can help you out a little there. So Grafana does have its own helm. The OSS build isn’t natively HA but does give you a nice deployment method. 