103 lines
3.1 KiB
Text
103 lines
3.1 KiB
Text
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#!/usr/bin/env nu
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# Derived variables for loki bundle rendering.
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# Generates loki_config_yaml from params.storage_backend and params.retention_days.
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def main [component_json: string]: nothing -> nothing {
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let d = ($component_json | from json)
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let backend = ($d | get -o params.storage_backend.kind | default "filesystem")
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let bucket = ($d | get -o params.storage_backend.bucket | default "loki-chunks")
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let region = ($d | get -o params.storage_backend.region | default "us-east-1")
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let endpoint = ($d | get -o params.storage_backend.endpoint | default "")
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# insecure=true disables HTTPS on the S3 connection (plain HTTP). Required for
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# in-cluster object stores served over HTTP (e.g. Garage at garage.svc:3900,
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# TLS terminated at the ingress, not the store). Defaults false for real AWS/HTTPS.
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let insecure = ($d | get -o params.storage_backend.insecure | default false)
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let retention = ($d | get -o params.retention_days | default 90)
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let replication = ($d | get -o params.replication | default 1)
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# Resolve S3 endpoint: use explicit endpoint if set, fall back to AWS regional URL.
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let s3_endpoint = if ($endpoint | is-not-empty) { $endpoint } else { $"s3.($region).amazonaws.com" }
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let object_store = if $backend == "s3" { "s3" } else { "filesystem" }
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let delete_store = if $backend == "s3" { "s3" } else { "filesystem" }
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# Loki 3.x: S3 config lives under common.storage.s3.
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# filesystem fallback uses common.storage.filesystem paths only.
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let common_storage = if $backend == "s3" {
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$" storage:
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s3:
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endpoint: ($s3_endpoint)
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region: ($region)
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bucketnames: ($bucket)
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access_key_id: $\{LOKI_S3_ACCESS_KEY}
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secret_access_key: $\{LOKI_S3_SECRET_KEY}
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insecure: ($insecure)
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s3forcepathstyle: true
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http_config:
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idle_conn_timeout: 90s
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insecure_skip_verify: false"
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} else {
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$" storage:
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filesystem:
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chunks_directory: /loki/chunks
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rules_directory: /loki/rules"
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}
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let loki_config_yaml = $"auth_enabled: false
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server:
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http_listen_port: 3100
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grpc_listen_port: 9096
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common:
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instance_addr: 127.0.0.1
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path_prefix: /loki
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($common_storage)
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replication_factor: ($replication)
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ring:
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kvstore:
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store: inmemory
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query_range:
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results_cache:
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cache:
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embedded_cache:
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enabled: true
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max_size_mb: 100
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schema_config:
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configs:
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- from: 2024-01-01
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store: tsdb
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object_store: ($object_store)
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schema: v13
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index:
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prefix: index_
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period: 24h
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storage_config:
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tsdb_shipper:
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active_index_directory: /loki/index
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cache_location: /loki/index_cache
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cache_ttl: 24h
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ruler:
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alertmanager_url: http://localhost:9093
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limits_config:
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retention_period: ($retention)d
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compactor:
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working_directory: /loki/compactor
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retention_enabled: true
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retention_delete_delay: 2h
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retention_delete_worker_count: 150
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delete_request_store: ($delete_store)
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analytics:
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reporting_enabled: false"
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{ loki_config_yaml: $loki_config_yaml } | to json --raw | print
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}
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