Loki has been configured with a gateway (nginx) to support reads and writes from a single component.

You can send logs from inside the cluster using the cluster DNS:

http://loki-gateway.loki.svc.cluster.local/loki/api/v1/push

You can test to send data from outside the cluster by port-forwarding the gateway to your local machine:

kubectl port-forward —namespace loki svc/loki-gateway 3100:80 &

And then using http://127.0.0.1:3100/loki/api/v1/push URL as shown below:

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curl -H "Content-Type: application/json" -XPOST -s "http://127.0.0.1:3100/loki/api/v1/push"  \
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--data-raw "{\"streams\": [{\"stream\": {\"job\": \"test\"}, \"values\": [[\"$(date +%s)000000000\", \"fizzbuzz\"]]}]}" \
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-H X-Scope-OrgId:foo

Then verify that Loki did receive the data using the following command:

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curl "http://127.0.0.1:3100/loki/api/v1/query_range" --data-urlencode 'query={job="test"}' -H X-Scope-OrgId:foo | jq .data.result