field embedded_cache not found in type cache.Config

[mostafa]

Describe the bug
After trying the instructions on installing and running Loki locally on a Linux instance, I got this error:

$ ./loki-linux-amd64 -config.file=loki-local-config.yaml
failed parsing config: loki-local-config.yaml: yaml: unmarshal errors:
  line 22: field embedded_cache not found in type cache.Config

Commenting out the embedded_cache helps it run normally.

To Reproduce
Steps to reproduce the behavior:

1. Download and unzip Loki v2.6.1 from the GitHub release page:

   $ curl -O -L "https://github.com/grafana/loki/releases/download/v2.6.1/loki-linux-amd64.zip"
   # extract the binary
   $ unzip "loki-linux-amd64.zip"
   # make sure it is executable
   $ chmod a+x "loki-linux-amd64"

2. Download the latest config for running Loki locally:

   wget https://raw.githubusercontent.com/grafana/loki/master/cmd/loki/loki-local-config.yaml

3. Run it:

   ./loki-linux-amd64 -config.file=loki-local-config.yaml

4. See the error:

   failed parsing config: loki-local-config.yaml: yaml: unmarshal errors:
     line 22: field embedded_cache not found in type cache.Config

Expected behavior
It should run normally, I suppose.

Environment:

• Infrastructure: laptop
• Deployment tool: None. (ran locally)

Screenshots, Promtail config, or terminal output
If applicable, add any output to help explain your problem.

[Unostot]

just did the same thing and got stuck there...
searched and was suprised that someone had the same problem minutes before me

Please explain what changed so that the "getting started" makes the start with loki so discouraging ;)

[mostafa]

@Unostot I'm sure it can be sorted out. I haven't found time to solve it myself though. 😅

[kavirajk]

Thanks for reporting this issue :)

The problem is with the doc, it basically make you to run stable released version of Loki binary (in this case v2.6.1), with config file from latest tip of the main branch (unstable, which actually contains fifocache config)

The config loki-local-config.yaml should also also from v2.6.1 branch/tag instead.

Feel free to create PR for the doc fix (or I will fix it tmrw)

[neelabalan]

@mostafa try using this - it works for me on v2.6.0

auth_enabled: false

server:
  http_listen_port: 3100
  grpc_listen_port: 9096

common:
  path_prefix: /tmp/loki
  storage:
    filesystem:
      chunks_directory: /tmp/loki/chunks
      rules_directory: /tmp/loki/rules
  replication_factor: 1
  ring:
    instance_addr: 127.0.0.1
    kvstore:
      store: inmemory

schema_config:
  configs:
    - from: 2020-10-24
      store: boltdb-shipper
      object_store: filesystem
      schema: v11
      index:
        prefix: index_
        period: 24h

ruler:
  alertmanager_url: http://localhost:9093

[rgrullon]

This issue is still present in the docs

[mostafa]

I'll fix this.

[billq]

Still (or again?) broken. Same error following the same directions.

[mostafa]

@billq
It is updated on the main branch, which means it is available on the next, but not latest v2.6.x.

[Corfucinas]

Alright, time to wait for merge, just ran into the same problem

[mostafa]

@Corfucinas You can safely use the correct URL as I noted in the PR #7346:

Note: Use the corresponding Git refs that match your downloaded Loki version to get the correct configuration file. For example, if you are using Loki version 2.6.1, you need to use the https://raw.githubusercontent.com/grafana/loki/v2.6.1/cmd/loki/loki-local-config.yaml URL to download the configuration file that corresponds to the Loki version you aim to run.

[Corfucinas]

Hey there @mostafa

Is there's a way to add

query_range:
  results_cache:
    cache:
      embedded_cache:
        enabled: true
        distributed: false
        max_size_mb: 100

[mostafa]

@Corfucinas I suppose not, because the tag is already on a specific commit, and I don't think we can do anything about it until the next release.
@owen-d Please correct me if I am wrong regarding my answer above. 👆

[Corfucinas]

Hey @mostafa

Sorry, I think my comment was not sufficiently clear. I meant "Is there a way to add"... query_range within the current release? Or it will be possible to use it once -as you mention- the next release?

If the latter, I can just comment it out and enable it in the future, thanks!

[mostafa]

@Corfucinas A Loki developer like @owen-d would be a better person to answer this.

[yongzhang]

same issue, can't figure it out (v2.7.1):

failed parsing config: config.yaml: yaml: unmarshal errors:
  line 33: field embedded-cache not found in type cache.Config

config:

query_range:
  align_queries_with_step: true
  results_cache:
    cache:
      embedded-cache:
        enabled: true
        max_size_mb: 4096
        ttl: 24h
  cache_results: true

[yongzhang]

same issue, can't figure it out (v2.7.1):

failed parsing config: config.yaml: yaml: unmarshal errors:
  line 33: field embedded-cache not found in type cache.Config

config:

query_range:
  align_queries_with_step: true
  results_cache:
    cache:
      embedded-cache:
        enabled: true
        max_size_mb: 4096
        ttl: 24h
  cache_results: true

ok, I spent hours to find out there was a typo in the doc, it should be underscore not hyphen....

[Corfucinas]

same issue, can't figure it out (v2.7.1):

failed parsing config: config.yaml: yaml: unmarshal errors:
  line 33: field embedded-cache not found in type cache.Config

config:

query_range:
  align_queries_with_step: true
  results_cache:
    cache:
      embedded-cache:
        enabled: true
        max_size_mb: 4096
        ttl: 24h
  cache_results: true

ok, I spent hours to find out there was a typo in the doc, it should be underscore not hyphen....

Thanks for this

[salarali]

This issue is still there. I spent some time figuring this out.

[mostafa]

@kavirajk

Can the changes be backported to the docs in v2.6.x?