# Monitoring & Prometheus (DevOps) > Pengumpulan metrik, PromQL, exporter, Alertmanager, integrasi Grafana, troubleshooting metrik yang hilang - 22 pertanyaan wawancara - Mid-Level - [Pertanyaan Wawancara: DevOps](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara.md) ## 1. Apa itu metrik tipe Counter di Prometheus? **Jawaban** Counter adalah metrik yang hanya dapat meningkat atau direset ke nol saat restart. Ini ideal untuk menghitung peristiwa kumulatif seperti permintaan HTTP, error, atau pesan yang diproses. Untuk menghitung tingkat perubahan, gunakan fungsi PromQL rate() atau irate() yang menangani reset secara otomatis. ## 2. Apa model pengumpulan metrik default yang digunakan oleh Prometheus? **Jawaban** Prometheus menggunakan model pull di mana server secara aktif melakukan scrape metrik dari target pada interval reguler yang ditentukan. Model ini memusatkan konfigurasi, mendeteksi target yang down dengan mudah, dan mencegah aplikasi membebani server. Push gateway ada untuk job efemeral tetapi mewakili pola pengecualian, bukan norma. ## 3. Apa itu exporter dalam ekosistem Prometheus? **Jawaban** Exporter adalah komponen yang mengekspos metrik dari sistem pihak ketiga dalam format Prometheus. Ini menerjemahkan metrik native dari aplikasi seperti MySQL, Redis, atau NGINX menjadi metrik yang kompatibel dan dapat diakses melalui HTTP. Exporter resmi mengikuti konvensi penamaan yang ketat dan dikelola oleh komunitas Prometheus. ## 19 pertanyaan lagi tersedia - Apa perbedaan utama antara Gauge dan Counter? - Untuk apa endpoint /metrics digunakan dalam aplikasi yang diinstrumentasi? Daftar gratis: https://sharpskill.dev/id/login ## Topik wawancara DevOps lainnya - [Kontrol Versi & Git](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/version-control-git.md): 20 pertanyaan, Junior - [Dasar-dasar Linux](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/linux-fundamentals.md): 22 pertanyaan, Junior - [Shell Scripting & Bash](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/shell-scripting-bash.md): 20 pertanyaan, Mid-Level - [Dasar-Dasar Networking](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/networking-basics.md): 22 pertanyaan, Junior - [Dasar-Dasar Docker](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/docker-fundamentals.md): 24 pertanyaan, Junior - [Dasar-Dasar CI/CD](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/ci-cd-fundamentals.md): 18 pertanyaan, Junior - [GitHub Actions](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/github-actions.md): 22 pertanyaan, Mid-Level - 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[Keamanan Pipeline CI/CD](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/cicd-pipeline-security.md): 20 pertanyaan, Mid-Level - [Helm & Kubernetes](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/helm-kubernetes.md): 20 pertanyaan, Mid-Level - [Keamanan Runtime & Cluster](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/runtime-cluster-security.md): 24 pertanyaan, Senior - [Container Supply Chain Security](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/container-supply-chain.md): 22 pertanyaan, Senior - [Service Mesh & Istio](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/service-mesh-istio.md): 24 pertanyaan, Senior - [GitOps & ArgoCD](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/gitops-argocd.md): 22 pertanyaan, Senior - [Progressive Delivery](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/progressive-delivery.md): 20 pertanyaan, Senior - [Observability Terdistribusi](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/observability-distributed.md): 22 pertanyaan, Senior - [Disaster Recovery & Backup](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/disaster-recovery.md): 20 pertanyaan, Senior - [Optimasi Performa](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/performance-optimization.md): 22 pertanyaan, Senior - [Optimasi Biaya Cloud](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/infrastructure-cost.md): 20 pertanyaan, Senior - [Prinsip SRE](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/sre-principles.md): 24 pertanyaan, Senior - [Chaos Engineering](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/chaos-engineering.md): 20 pertanyaan, Senior - [Platform Engineering](https://sharpskill.dev/id/technologies/devops/pertanyaan-wawancara/platform-engineering.md): 22 pertanyaan, Senior --- Source: SharpSkill (https://sharpskill.dev), tech interview preparation for your real stack. 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