```ruby
external_url 'https://igit.heysq.com:9090'
gitlab_rails['time_zone'] = 'Asia/Shanghai'

#关闭电子邮件相关功能

gitlab_rails['smtp_enable'] = false
gitlab_rails['gitlab_email_enabled'] = false
gitlab_rails['incoming_email_enabled'] = false

#Terraform

gitlab_rails['terraform_state_enabled'] = false

#Usage Statistics

gitlab_rails['usage_ping_enabled'] = false
gitlab_rails['sentry_enabled'] = false
grafana['reporting_enabled'] = false

#关闭容器仓库功能

gitlab_rails['gitlab_default_projects_features_container_registry'] = false
gitlab_rails['registry_enabled'] = false
registry['enable'] = false
registry_nginx['enable'] = false

#包仓库

gitlab_rails['packages_enabled'] = false
gitlab_rails['dependency_proxy_enabled'] = false

#GitLab KAS

gitlab_kas['enable'] = false
gitlab_rails['gitlab_kas_enabled'] = false

#Mattermost

mattermost['enable'] = false
mattermost_nginx['enable'] = false

#Kerberos

gitlab_rails['kerberos_enabled'] = false
sentinel['enable'] = false

#GitLab Pages

gitlab_pages['enable'] = false
pages_nginx['enable'] = false

#禁用 PUMA 集群模式

puma['worker_processes'] = 0
puma['min_threads'] = 1
puma['max_threads'] = 2

#降低后台守护进程并发数

sidekiq['max_concurrency'] = 5

gitlab_ci['gitlab_ci_all_broken_builds'] = false
gitlab_ci['gitlab_ci_add_pusher'] = false

#关闭监控

prometheus_monitoring['enable'] = false
alertmanager['enable'] = false
node_exporter['enable'] = false
redis_exporter['enable'] = false
postgres_exporter['enable'] = false
pgbouncer_exporter['enable'] = false
gitlab_exporter['enable'] = false
grafana['enable'] = false
sidekiq['metrics_enabled'] = false
```