[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"me":3,"catalog:tr:devops-cloud\u002Fk8s-observability-troubleshooting":4,"config":256},null,{"field_key":5,"field_name":6,"seniority":7,"topic_key":8,"topic_name":9,"spec_key":7,"spec_name":7,"locale":10,"cell_total":11,"field_total":12,"seniorities":13,"topics":17,"specs":151,"samples":171},"devops-cloud","DevOps \u002F Cloud","","k8s-observability-troubleshooting","K8s Observability Troubleshooting","tr",75,3375,[14,15,16],"junior","mid","senior",[18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,72,75,78,81,84,87,90,91,94,97,100,103,106,109,112,115,118,121,124,127,130,133,136,139,142,145,148],{"key":19,"name":20,"count":11},"aws-compute-ec2-lambda","Aws Compute Ec2 Lambda",{"key":22,"name":23,"count":11},"aws-databases-rds-dynamodb","Aws Databases Rds Dynamodb",{"key":25,"name":26,"count":11},"aws-iam-security","Aws Iam Security",{"key":28,"name":29,"count":11},"aws-messaging-eventing","Aws Messaging Eventing",{"key":31,"name":32,"count":11},"aws-networking-vpc","Aws Networking Vpc",{"key":34,"name":35,"count":11},"aws-storage-s3-ebs","Aws Storage S3 Ebs",{"key":37,"name":38,"count":11},"azure-compute-vm-appservice","Azure Compute Vm Appservice",{"key":40,"name":41,"count":11},"azure-databases-sql-cosmosdb","Azure Databases Sql Cosmosdb",{"key":43,"name":44,"count":11},"azure-iam-security","Azure Iam Security",{"key":46,"name":47,"count":11},"azure-messaging-eventing","Azure Messaging Eventing",{"key":49,"name":50,"count":11},"azure-networking-vnet","Azure Networking Vnet",{"key":52,"name":53,"count":11},"azure-storage-blob-managed-disk","Azure Storage Blob Managed Disk",{"key":55,"name":56,"count":11},"ci-cd-pipelines","Ci Cd Pipelines",{"key":58,"name":59,"count":11},"cloud-architecture-scaling","Cloud Architecture Scaling",{"key":61,"name":62,"count":11},"containers-orchestration","Containers Orchestration",{"key":64,"name":65,"count":11},"deployment-release-strategies","Deployment Release Strategies",{"key":67,"name":68,"count":11},"gcp-compute-gce-cloudrun","Gcp Compute Gce Cloudrun",{"key":70,"name":71,"count":11},"gcp-databases-cloudsql-spanner-firestore","Gcp Databases Cloudsql Spanner Firestore",{"key":73,"name":74,"count":11},"gcp-iam-security","Gcp Iam Security",{"key":76,"name":77,"count":11},"gcp-messaging-eventing","Gcp Messaging Eventing",{"key":79,"name":80,"count":11},"gcp-networking-vpc","Gcp Networking Vpc",{"key":82,"name":83,"count":11},"gcp-storage-gcs-persistent-disk","Gcp Storage Gcs Persistent Disk",{"key":85,"name":86,"count":11},"infrastructure-as-code","Infrastructure As Code",{"key":88,"name":89,"count":11},"k8s-config-secrets","K8s Config Secrets",{"key":8,"name":9,"count":11},{"key":92,"name":93,"count":11},"k8s-scheduling-resources","K8s Scheduling Resources",{"key":95,"name":96,"count":11},"k8s-services-networking","K8s Services Networking",{"key":98,"name":99,"count":11},"k8s-storage","K8s Storage",{"key":101,"name":102,"count":11},"k8s-workloads","K8s Workloads",{"key":104,"name":105,"count":11},"linux-filesystem-permissions-links","Linux Filesystem Permissions Links",{"key":107,"name":108,"count":11},"linux-networking-tools-troubleshooting","Linux Networking Tools Troubleshooting",{"key":110,"name":111,"count":11},"linux-performance-monitoring-resource-limits","Linux Performance Monitoring Resource Limits",{"key":113,"name":114,"count":11},"linux-process-management-signals","Linux Process Management Signals",{"key":116,"name":117,"count":11},"linux-shell-scripting-ops-automation","Linux Shell Scripting Ops Automation",{"key":119,"name":120,"count":11},"linux-systemd-service-management","Linux Systemd Service Management",{"key":122,"name":123,"count":11},"networking-dns-loadbalancing","Networking Dns Loadbalancing",{"key":125,"name":126,"count":11},"observability-monitoring","Observability Monitoring",{"key":128,"name":129,"count":11},"reliability-incident-sre","Reliability Incident Sre",{"key":131,"name":132,"count":11},"security-iam-secrets","Security Iam Secrets",{"key":134,"name":135,"count":11},"terraform-hcl-language-expressions","Terraform Hcl Language Expressions",{"key":137,"name":138,"count":11},"terraform-modules-workspaces","Terraform Modules Workspaces",{"key":140,"name":141,"count":11},"terraform-plan-apply-drift-import","Terraform Plan Apply Drift Import",{"key":143,"name":144,"count":11},"terraform-providers-lifecycle-provisioners","Terraform Providers Lifecycle Provisioners",{"key":146,"name":147,"count":11},"terraform-state-backend-locking","Terraform State Backend Locking",{"key":149,"name":150,"count":11},"terraform-testing-policy-cicd","Terraform Testing Policy Cicd",[152,156,159,162,165,168],{"key":153,"name":154,"count":155},"aws","AWS",450,{"key":157,"name":158,"count":155},"azure","Azure",{"key":160,"name":161,"count":155},"gcp","GCP",{"key":163,"name":164,"count":155},"kubernetes","Kubernetes",{"key":166,"name":167,"count":155},"linux","Linux",{"key":169,"name":170,"count":155},"terraform","Terraform",[172,190,203,217,230,243],{"id":173,"topic":9,"difficulty":174,"body":175,"options":176,"correct_key":181,"explanation":189},"019f651a-7d1f-7eff-a208-3f51e54d9a3f",1,"Kubernetes'te Pod fazı `Running` aslında neyi garanti eder?",[177,180,183,186],{"key":178,"text":179},"a","Pod'daki tüm container'lar readiness kontrollerini geçmiştir",{"key":181,"text":182},"b","En az bir container oluşturulmuş ve çalışıyordur",{"key":184,"text":185},"c","Pod, kendisini seçen her Service'in Endpoints'ine eklenmiştir",{"key":187,"text":188},"d","Pod'un container'ları oluşturulduğundan beri hiç yeniden başlamamıştır","`Running`, yalnızca Pod'un zamanlandığı ve en az bir container'ın ayakta olduğu anlamına gelir; readiness hakkında hiçbir şey söylemez — bir container readiness probe'unda başarısız olursa Pod `READY 0\u002F1` iken de `Running` olabilir.",{"id":191,"topic":9,"difficulty":174,"body":192,"options":193,"correct_key":187,"explanation":202},"019f651a-7d20-7867-ba99-1619d18e021b","```\n$ kubectl get pod crash-pod\nNAME        READY   STATUS             RESTARTS      AGE\ncrash-pod   0\u002F1     CrashLoopBackOff   4 (37s ago)   3m\n```\nBuradaki `CrashLoopBackOff` durumu ne anlama gelir?",[194,196,198,200],{"key":178,"text":195},"Pod, cluster'daki hiçbir Node'a zamanlanamadı",{"key":181,"text":197},"Container'ın image'ı registry'den çekilemedi",{"key":184,"text":199},"Pod, bir PersistentVolumeClaim'in bağlanmasını bekliyor",{"key":187,"text":201},"Container her yeniden başlatmadan kısa süre sonra tekrar çöküyor","CrashLoopBackOff, container'ın tekrar tekrar çöktüğü ve restartPolicy nedeniyle kubelet'in yeniden denediği, ancak her denemeyi anında değil artan bir bekleme süresiyle yaptığı anlamına gelir.",{"id":204,"topic":9,"difficulty":205,"body":206,"options":207,"correct_key":178,"explanation":216},"019f651a-7d21-73de-83d8-dfc2b51092bf",2,"Bir Pod'un tek container'ı `command: [\"sh\", \"-c\", \"exit 1\"]` ile tanımlanmış ve `restartPolicy: Always` (varsayılan) ayarlı. Pod oluşturulduktan hemen sonra ne olur?",[208,210,212,214],{"key":178,"text":209},"Hemen sıfırdan farklı bir kodla çıkış yapar; kubelet yeniden başlatır, `CrashLoopBackOff` görünür",{"key":181,"text":211},"Komut geçersiz olduğu için Pod `Pending` durumunda kalır",{"key":184,"text":213},"Container bir kez başlar, çıkış yapar ve komut tamamlandığı için Pod fazı `Succeeded` olur",{"key":187,"text":215},"kubectl, komutun uzun süre çalışan bir process olmaması nedeniyle manifest'i apply anında reddeder","Sıfırdan farklı bir kodla çıkış yapmak, ne kadar hızlı olursa olsun bir başarısızlık sayılır; `restartPolicy: Always` ile kubelet container'ı yeniden başlatmaya devam eder ve birkaç ardışık başarısızlıktan sonra gösterilen durum `CrashLoopBackOff` olur.",{"id":218,"topic":9,"difficulty":205,"body":219,"options":220,"correct_key":184,"explanation":229},"019f651a-7d21-7d52-91a2-78274e5b0268","```\n$ kubectl describe pod oom-pod\n    ...\n    Last State:     Terminated\n      Reason:       OOMKilled\n    Restart Count:  3\n```\n`Reason: OOMKilled`, container'ın neden sonlandırıldığı hakkında ne söyler?",[221,223,225,227],{"key":178,"text":222},"Container'ın liveness probe'u art arda üç kez başarısız oldu",{"key":181,"text":224},"Node, container'ın image'ını çekerken disk alanı tükendi",{"key":184,"text":226},"Container, memory `limit`'ini aştı ve sonlandırıldı",{"key":187,"text":228},"Container'ın process'i kendiliğinden 0 koduyla çıkış yaptı","OOMKilled, container memory `limit`'ini aştığında raporlanır; kernel'in out-of-memory killer'ı process'i sonlandırır ve kubelet bunu genel bir sıfırdan farklı çıkış yerine bu özel nedenle raporlar.",{"id":231,"topic":9,"difficulty":174,"body":232,"options":233,"correct_key":181,"explanation":242},"019f651a-7d22-75af-9505-4da99f5391e0","Bir container'ın liveness probe'u (`failureThreshold`'u aşacak şekilde) tekrar tekrar başarısız olursa ne olur?",[234,236,238,240],{"key":178,"text":235},"Pod, tüm Service Endpoints'lerinden çıkarılır ama container değişmeden çalışmaya devam eder",{"key":181,"text":237},"kubelet, container'ı öldürür ve Pod'un restart policy'sine göre yeniden başlatır",{"key":184,"text":239},"Pod silinir ve farklı bir Node'a yeniden zamanlanır",{"key":187,"text":241},"Kubernetes, Node'u zamanlanamaz olarak işaretler","Başarısız olan bir liveness probe, kubelet'e container'ın sağlıksız olduğunu ve yeniden başlatılması gerektiğini söyler; kubelet container'ı öldürüp yerine yeni bir örnek başlatır, bu da Pod'un restart sayacını artırır.",{"id":244,"topic":9,"difficulty":205,"body":245,"options":246,"correct_key":187,"explanation":255},"019f651a-7d22-7e95-a0e8-d9cdb5deef9e","Bir Service'in arkasındaki Pod'da readinessProbe sürekli başarısız oluyor:\n```\n$ kubectl get pod readiness-fail-pod\nNAME                 READY   STATUS    RESTARTS   AGE\nreadiness-fail-pod   0\u002F1     Running   0          40s\n\n$ kubectl get endpoints readiness-demo-svc\nNAME                 ENDPOINTS   AGE\nreadiness-demo-svc               40s\n```\nBu çıktıyı en iyi ne açıklar?",[247,249,251,253],{"key":178,"text":248},"Container çöktü ve kubelet onu yeniden başlatmak üzere",{"key":181,"text":250},"Pod bir Node'a zamanlanamadı",{"key":184,"text":252},"Service'in label selector'ı Pod'un etiketleriyle hiç eşleşmiyor",{"key":187,"text":254},"Container hâlâ çalışıyor ama Service'in Endpoints'inden çıkarıldı","Başarısız bir readiness probe yalnızca trafik yönlendirmesini etkiler: Pod `RESTARTS 0` ile `Running` kalır, ama kubelet onu ready-olmayan olarak işaretler, bu yüzden endpoint controller onu tekrar geçene kadar Service'in Endpoints'inden çıkarır.",{"fields":257,"seniorities":429,"interview_shapes":430,"locales":435,"oauth":437,"question_count":440,"coach_enabled":441,"jd_match_enabled":441},[258,283,303,320,330,343,362,381,403,410,416,423],{"key":259,"name_tr":260,"name_en":260,"sort":174,"specializations":261},"backend","Backend",[262,265,268,271,274,277,280],{"key":263,"name":264,"field":259},"general","Genel",{"key":266,"name":267,"field":259},"go","Go",{"key":269,"name":270,"field":259},"python","Python",{"key":272,"name":273,"field":259},"java","Java",{"key":275,"name":276,"field":259},"csharp","C#\u002F.NET",{"key":278,"name":279,"field":259},"nodejs","Node.js",{"key":281,"name":282,"field":259},"php","PHP",{"key":284,"name_tr":285,"name_en":285,"sort":205,"specializations":286},"frontend","Frontend",[287,288,291,294,297,300],{"key":263,"name":264,"field":284},{"key":289,"name":290,"field":284},"javascript","JavaScript",{"key":292,"name":293,"field":284},"typescript","TypeScript",{"key":295,"name":296,"field":284},"react","React",{"key":298,"name":299,"field":284},"vue","Vue",{"key":301,"name":302,"field":284},"angular","Angular",{"key":304,"name_tr":305,"name_en":305,"sort":306,"specializations":307},"fullstack","Fullstack",3,[308,309,310,311,312,313,314,315,316,317,318,319],{"key":263,"name":264,"field":304},{"key":266,"name":267,"field":259},{"key":269,"name":270,"field":259},{"key":272,"name":273,"field":259},{"key":275,"name":276,"field":259},{"key":278,"name":279,"field":259},{"key":281,"name":282,"field":259},{"key":289,"name":290,"field":284},{"key":292,"name":293,"field":284},{"key":295,"name":296,"field":284},{"key":298,"name":299,"field":284},{"key":301,"name":302,"field":284},{"key":5,"name_tr":6,"name_en":6,"sort":321,"specializations":322},4,[323,324,325,326,327,328,329],{"key":263,"name":264,"field":5},{"key":153,"name":154,"field":5},{"key":160,"name":161,"field":5},{"key":157,"name":158,"field":5},{"key":163,"name":164,"field":5},{"key":169,"name":170,"field":5},{"key":166,"name":167,"field":5},{"key":331,"name_tr":332,"name_en":332,"sort":333,"specializations":334},"ai-engineer","AI Engineer",5,[335,336,337,340],{"key":263,"name":264,"field":331},{"key":269,"name":270,"field":331},{"key":338,"name":339,"field":331},"llm-rag","LLM\u002FRAG",{"key":341,"name":342,"field":331},"mlops","MLOps",{"key":344,"name_tr":345,"name_en":346,"sort":347,"specializations":348},"database","Veritabanı","Database",6,[349,350,353,356,359],{"key":263,"name":264,"field":344},{"key":351,"name":352,"field":344},"postgresql","PostgreSQL",{"key":354,"name":355,"field":344},"mysql","MySQL",{"key":357,"name":358,"field":344},"mongodb","MongoDB",{"key":360,"name":361,"field":344},"redis","Redis",{"key":363,"name_tr":364,"name_en":365,"sort":366,"specializations":367},"mobile","Mobil","Mobile",7,[368,369,372,375,378],{"key":263,"name":264,"field":363},{"key":370,"name":371,"field":363},"ios-swift","iOS (Swift)",{"key":373,"name":374,"field":363},"android-kotlin","Android (Kotlin)",{"key":376,"name":377,"field":363},"flutter","Flutter",{"key":379,"name":380,"field":363},"react-native","React Native",{"key":382,"name_tr":383,"name_en":384,"sort":385,"specializations":386},"security","Güvenlik","Security",8,[387,388,391,394,397,400],{"key":263,"name":264,"field":382},{"key":389,"name":390,"field":382},"appsec","AppSec",{"key":392,"name":393,"field":382},"offensive-pentest","Offensive \u002F Pentest",{"key":395,"name":396,"field":382},"cloud-security","Cloud Security",{"key":398,"name":399,"field":382},"devsecops","DevSecOps",{"key":401,"name":402,"field":382},"blue-team-incident","Blue Team \u002F Incident",{"key":404,"name_tr":405,"name_en":406,"sort":407,"specializations":408},"qa-test-automation","QA \u002F Test Otomasyonu","QA \u002F Test Automation",9,[409],{"key":263,"name":264,"field":404},{"key":411,"name_tr":412,"name_en":412,"sort":413,"specializations":414},"data-engineer","Data Engineer",10,[415],{"key":263,"name":264,"field":411},{"key":417,"name_tr":418,"name_en":419,"sort":420,"specializations":421},"game-dev","Oyun Geliştirme","Game Development",11,[422],{"key":263,"name":264,"field":417},{"key":424,"name_tr":425,"name_en":425,"sort":426,"specializations":427},"ml-engineer","ML Engineer",12,[428],{"key":263,"name":264,"field":424},[14,15,16],{"junior":431,"mid":433,"senior":434},{"questions":432,"median_sec":3},20,{"questions":432,"median_sec":3},{"questions":432,"median_sec":3},[10,436],"en",[438,439],"google","github",21750,true]