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The fluentd_log_output SLI of the logging service (`main` stage) has an error rate violating SLO

Start time: 01 February 2021, 11:05AM (UTC)
Severity: critical
full_query: ((gitlab_component_errors:ratio_1h{component="fluentd_log_output",monitor="global",type="logging"} > (14.4 * 0.001)) and (gitlab_component_errors:ratio_5m{component="fluentd_log_output",monitor="global",type="logging"} > (14.4 * 0.001)) or (gitlab_component_errors:ratio_6h{component="fluentd_log_output",monitor="global",type="logging"} > (6 * 0.001)) and (gitlab_component_errors:ratio_30m{component="fluentd_log_output",monitor="global",type="logging"} > (6 * 0.001))) and on(env, environment, tier, type, stage, component) (sum by(env, environment, tier, type, stage, component) (gitlab_component_ops:rate_1h{component="fluentd_log_output",monitor="global",type="logging"}) >= 1)
Monitoring tool: Prometheus
Description: This SLI monitors fluentd log output and the number of output errors in fluentd.

Currently the error-rate is 0.7769%.
GitLab alert: https://gitlab.com/gitlab-com/gl-infra/production/-/alert_management/86/details

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