Draft Red Hat Security Symposium @ San Jose: A DevSecOps State of Mind: Continuous Security with Kuberenetes Edit deck

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A DevSecOps State of Mind: Continuous Security with Kubernetes Do not use: Make a copy Chris Van Tuin Chief Technologist, West @chrisvantuin cvantuin@redhat.com

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ENABLING INNOVATION

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“Only the paranoid survive” - Andy Grove, 1996

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THE WORLD IS AUTOMATING Those who succeed in automation will win

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NOT JUST A WEBSITE, THE DISRUPTERS = Empowered organization Speed Up   Innovation Time Change Move Fast, Break Things Culture of experimentation A 20% vs. 25% Shorten the Feedback Loop Real-time data-driven intelligence & personalization AI /  ML Data, Data, Data B

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ENABLING INNOVATION, WHILE EXECUTING AT SCALE Static &  Planned Dynamic &   Policy Driven Execution Innovation Innovation Execution Old New

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I.T. MUST EVOLVE

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HOW DOES I.T. ACCELERATE   BUSINESS INNOVATION? 6 to 9 months Innovation Hours to Weeks

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THE STRATEGIC DIFFERENTIATOR The Fab  Powered by Automation “copy exactly” The Software Factory Powered by Automation

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I.T. MUST EVOLVE FROM A COST CENTER   TO INNOVATION CENTER Development Model Application Architecture Deployment & Packaging Application Infrastructur e Storage Waterfall Agile Monolithic N-tier Bare Metal Virtual Servers Data Center Hosted Scale Up Scale Out DevOps MicroServices Containers Hybrid Cloud Storage as a Service

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I.T. MUST TRANSFORM FROM A COST CENTER   INTO AN INNOVATION CENTER Powered by DevOps + Automation + + DEV QA OPS Culture Process   Automation Technology Linux + Containers IaaS Orchestration CI/CD Source Control Management Collaboration Build and Artifact Management Testing Frameworks Cloud Native Applications Hybrid Cloud Open Source Agile, Iterative, Continuous, Infrastructure as Code Collaborative Transparent Open THE SOFTWARE FACTORY

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CONTINUOUS SECURITY

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DEV QA OPS SECURITY IS AN AFTERTHOUGHT | SECURITY | “Patch? The servers are behind the firewall.” - Anonymous (far too many to name), 2005 - …

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BARE METAL VIRTUAL PRIVATE CLOUD OFF-PREMISE ON-PREMISE PUBLIC CLOUD DATA DATA DISTRIBUTED APPLICATIONS

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ANY COMBINATION, WHETHER TRADITIONAL OR CONTAINERIZED LEGACY APPS (1,000+) BARE METAL PRIVATE CLOUD PUBLIC CLOUD VIRTUAL PRODUCTION DEV/TEST HYBRID CLOUD ENVIRONMENTS

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MULTI-TENANCY

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DEVSECOPS + + End to End Security DEV QA OPS Culture Process Technology Linux + Containers IaaS Orchestration CI/CD Source Control Management Collaboration Build and Artifact Management Testing Frameworks Open Source

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DEVSECOPS Continuous Security Improvement Process Optimization Security Automation Dev QA Prod Reduce Risks, Lower Costs, Speed Delivery, Speed Reaction

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CONTAINERS AT SCALE

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LAPTOP Container Application OS dependencies Guest VM LINUX BARE METAL Container Application OS dependencies LINUX VIRTUALIZATION Container Application OS dependencies Virtual Machine LINUX PRIVATE CLOUD Container Application OS dependencies Virtual Machine LINUX PUBLIC CLOUD Container Application OS dependencies Virtual Machine LINUX CONTAINERIZED MICROSERVICES  Build Once, Deploy Anywhere

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docker.io Registry Private Registry FROM fedora:1.0 CMD echo “Hello” Build file Physical, Virtual, Cloud Container Image Container Instance Build Run Ship CONTAINERS ENABLE DEVOPS

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Image Format Distribution Spec Runtime Spec

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Scheduling Monitoring Persistence Discovery Lifecycle & health Scaling Aggregation Security MORE THAN CONTAINERS…

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BARE METAL VIRTUAL PRIVATE CLOUD PUBLIC CLOUD Automated Software Factory  Speed, Resiliency, Scalability, Security  

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Databases Images Automation MANAGING CONTAINERIZED MICROSERVICES  WITH KUBERNETES A/B Testing Migrations External  Services Deployment Strategies Security What’s Next… CI/CD Scanning ENABLING DEVSECOPS WITH KUBERNETES External   Services Databases Migrations Infrastructure Version 1 Ingress e.g haproxy BLUE / GREEN DEPLOYMENT Using Ingress 100%

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KUBERNETES AUTOMATION

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Web Application replicas: 1,   role: app image: myapp:1.0 replicas: 2,   role: web image: httpd:1.7.9 ORCHESTRATION Declarative, Deployment Controller Manager & Data Store (etcd)

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Web Application ORCHESTRATION Declarative, Deployment Nodes Controller Manager & Data Store (etcd) Physical, VM,   Cloud Instances replicas: 2,   role: web image: httpd:1.7.9 replicas: 1,   role: app image: myapp:1.0

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role: app role: web role: web Pods Nodes Image Registry ORCHESTRATION Schedule + Provision Pods (Compute/Storage/Network) Web Application replicas: 2,   role: web image: httpd:1.7.9 replicas: 1,   role: app image: myapp:1.0

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Web Application role: web role: app role: web replicas: 1,   selector role: app replicas: 2,   selector role: web ORCHESTRATION Services (Load Balancer), Service discovery with selectors and pod labels Pods Nodes Services Controller Manager & Data Store (etcd)

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Web Application ORCHESTRATION Service (Load Balancer) Pods Nodes Controller Manager & Data Store (etcd) Ingress / Routes role: web role: app role: web replicas: 1,   role: app replicas: 2,   role: web Services

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HEALTH CHECK Monitoring & Logging Pods Nodes Services Web Application role: web role: app role: web Ingress / Routes Health Check replicas: 1,   role: app replicas: 2,   role: web

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Pods Nodes Services Web Application role: web role: app role: web replicas: 1,   role: app replicas: 2,   role: web role: web Controller Manager & Data Store (etcd) HEALTH CHECK Readiness Probe e.g. tcp, http, script Ingress / Routes

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Web Application replicas: 1,   role: app replicas: 2,   role: web Pods Nodes Services role: web role: app role: web Controller Manager & Data Store (etcd) HEALTH CHECK Ingress / Routes

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Web Application AUTO-SCALE Monitoring & Logging 80% CPU Pods Nodes Services role: web role: app role: web Ingress / Routes replicas: 1,   role: app replicas: 2,   role: web

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Web Application 80% CPU Pods Nodes Services role: web role: app role: web Controller Manager & Data Store (etcd) role: app AUTO-SCALE Ingress / Routes replicas: 2   role: app replicas: 2,   role: web

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Pods Nodes Services Web Application 50% CPU role: web role: app role: app role: web Controller Manager & Data Store (etcd) AUTO-SCALE Ingress / Routes replicas: 2,   role: web replicas: 2,   role: app

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CONTAINER IMAGES

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CONTAINER IMAGE JAR CONTAINER IMAGE Application Application Language runtimes OS dependencies 1.2/latest 1.1

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Config Data Kubernetes configmaps secrets Container image Traditional   data services, Kubernetes   persistent volumes TREAT CONTAINERS AS IMMUTABLE To keep containerized apps portable Application Language runtimes OS dependencies

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KUBERNETES CONFIGMAP Decouple configuration from container image Application Language runtimes OS dependencies Environment Variable or Volume/File CONTAINER INSTANCE key:value from directories, files, or values KUBERNETES  CONFIGMAP APPLICATION CONFIG FILE Application Configuration File e.g. XML etcd Pod Source Code Repository EnvVar require pod restart Files refresh in time

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CONTINUOUS BUILDS

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A CONVERGED SOFTWARE   SUPPLY CHAIN

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CI/CD PIPELINE WITH KUBERNETES BARE METAL VIRTUAL PRIVATE CLOUD PUBLIC CLOUD

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CUSTOM SUPPLY CHAIN CASCADING REBUILDS

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Java Build Environment Language runtimes OS dependencies Build Image Java Code Application Language runtimes OS dependencies Container Image Image Registry Source Repository Image Registry REPRODUCIBLE BUILDS Source to Image with Build Images Source v3.1 v1.0.1 v3.1

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CONTAINER SCANNING

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WHAT’S INSIDE MATTERS…

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PRIVATE REGISTRY

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Security CONTINUOUS INTEGRATION WITH SECURITY SCAN

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AUTOMATED SECURITY SCANNING with OpenSCAP Reports & Remediation Scan SCAP Security Guide for RHEL CCE-27002-5 Set Password Minimum Length Content Scan physical servers, virtual machines, docker images and containers  for Security Policy Compliance (CCEs) and known Security Vulnerabilities (CVEs)

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DEPLOYMENT STRATEGIES

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CONTINUOUS DELIVERY WITH CONTAINERS CI/CD - CONTAINER UPDATES

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CI/CD DEPLOYMENT STRATEGIES  Automate and reduce deployment risk DEPLOYMENT STRATEGIES • Recreate • Rolling updates • Blue / Green deployment • Canary with A/B testing

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Recreate

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Version 1 Version 1 Version 1 Version 1.2 ` Tests / CI RECREATE WITH DOWNTIME RECREATE WITH DOWNTIME  Using Recreate deployment strategy Kubernetes  Service

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Version 1 Version 1 Version 1 Version 1.2 ` Tests / CI RECREATE WITH DOWNTIME RECREATE WITH DOWNTIME  Shutdown existing deployment Kubernetes  Service

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Version 1.2 Version 1.2 Version 1.2 RECREATE WITH DOWNTIME Use Case • Non-mission critical services Pros • Simple, clean • No Schema incompatibilities • No API versioning Cons • Downtime RECREATE WITH DOWNTIME  Shutdown existing deployment Kubernetes  Service

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Rolling Updates

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Version 1 Version 1 Version 1 Version 1.2 ` Tests / CI ROLLING UPDATES with ZERO DOWNTIME Rollingupdate  maxUnavailable=0 maxSurge=1 ROLLING UPDATES  Replace each pod using RollingUpdate deployment strategy Kubernetes  Service

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Deploy new version and wait until it’s ready… Health Check: readiness probe e.g. tcp, http, script Version 1 Version 1 Version   1.2 Version 1 Rollingupdate  maxUnavailable=0 maxSurge=1 ROLLING UPDATES  Deploy new version, wait until it’s ready Kubernetes  Service

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Each container/pod is updated one by one Version 1.2 50% Version 1 V1 V1.2 ROLLING UPDATES  Requires backward compatibility, as two versions run side-by-side Kubernetes  Service

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Each container/pod is updated one by one Version 1.2 Version 1.2 Version 1.2 100% Use Case • Horizontally scaled • Backward compatible API/data • Microservices Pros • Zero downtime • Reduced risk, gradual rollout w/health checks • Ready for rollback Cons • Require backward compatible APIs/data • Resource overhead ROLLING UPDATES Kubernetes  Service

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Blue / Green Deployment

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BLUE Version 1 Ingress e.g haproxy BLUE / GREEN DEPLOYMENT Using Ingress 100% BLUE / GREEN DEPLOYMENT  Single service, run two complete Deployments BLUE Version 1 Ingress e.g haproxy BLUE / GREEN DEPLOYMENT Using Ingress 100% Service  selector:  production=BLUE Kubernetes  Deployment

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BLUE GREEN Version 1 Version 2 Ingress e.g haproxy BLUE / GREEN DEPLOYMENT Using Ingress 100% Health Check: readiness probe e.g. tcp, http, script BLUE / GREEN DEPLOYMENT  Using Deployments, Ingress Service  selector:  production=BLUE Kubernetes  Deployment Kubernetes  Deployment

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BLUE GREEN Version 1 Version 2 Ingress e.g haproxy BLUE / GREEN DEPLOYMENT Using Ingress 100% BLUE / GREEN DEPLOYMENT  Route all new request to Green, Blue sessions Service  selector:  version=GREEN

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BLUE GREEN Version 1 Version 2 Ingress e.g haproxy BLUE / GREEN DEPLOYMENT Using Ingress 100% BLUE / GREEN DEPLOYMENT  Using Deployments, Ingress Service  selector:  production=GREEN

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BLUE GREEN Version 1 Version 2 Ingress e.g haproxy BLUE / GREEN DEPLOYMENT Using Ingress 100% BLUE / GREEN DEPLOYMENT  Scale-down, reduce resources Service  selector:  production=GREEN

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BLUE GREEN Version 1 Version 2 Ingress e.g haproxy BLUE / GREEN DEPLOYMENT Using Ingress 100% BLUE / GREEN DEPLOYMENT  Hot Backup Service  selector:  production=GREEN Version 2

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BLUE / GREEN DEPLOYMENT Rollback BLUE GREEN Version 1 Version 2 Ingress Use Case • Self-contained micro services (data) Pros • Low risk, never change production • No downtime • Production like testing • Rollback Cons • Resource overhead • Data synchronization BLUE / GREEN DEPLOYMENT  Rollback Service  selector:  production=BLUE

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RAPID INNOVATION & EXPERIMENTATION WITH A/B TESTING

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”only about 1/3 of ideas improve the metrics   they were designed to improve.”  Ronny Kohavi, Microsoft (Amazon) MICROSERVICES RAPID INNNOVATION & EXPERIMENTATION

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A/B TESTING USING CANARY DEPLOYMENTS

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25% Conversion Rate ?! Conversion Rate 100% Version B Version A Ingress CANARY DEPLOYMENTS Tests / CI CANARY DEPLOYMENTS  Build confidence in new version Service  selector:  app=demo version=A label:  app=demo  version=A 25% Conversion Rate ??% Conversion Rate

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25% Conversion Rate 30% Conversion Rate 75% 25% Version B Version A Ingress CANARY DEPLOYMENTS CANARY DEPLOYMENTS  Requires app to support side-by-side version Service Service  selector:  app=demo label:  app=demo  version=A 25% Conversion Rate % Conversion Rate label:  app=demo  version=B

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25% Conversion Rate 30% Conversion Rate 100% Version B Version A Ingress CANARY DEPLOYMENTS Service  selector:  app=demo version=B label:  app=demo  version=A 25% Conversion Rate 30% Conversion Rate label:  app=demo  version=B

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EXTERNAL SERVICES

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EXTERNAL SERVICES Database outside cluster with IP address External Mongo Database Service External Mongo Database Service Development Production IP=10.200.0.2 port=27017 IP=10.100.0.9 port=27017

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EXTERNAL SERVICES Database outside cluster with IP address Pods Nodes Services WebApp role=webapp replicas=2,   role=webapp External Mongo Database Service IP=10.200.0.2 port=27017 Network External Mongo Database Service IP=10.100.0.9 port=27017 Database name=mongo port=27017 targetport=27017 Endpoint IP=10.200.0.2 port=27017 Database kind=Service type=ClusterIP name=mongo port=27017 targetport=27017

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EXTERNAL SERVICES Database outside cluster with IP address Pods Nodes Services WebApp role=webapp replicas=2,   role=webapp External Mongo Database Service IP=10.200.0.2 port=27017 Network External Mongo Database Service IP=10.100.0.9 port=27017 Database name=mongo port=27017 targetport=27017 Endpoint IP=10.200.0.2 port=27017 Connect with mongodb://mongo Database kind=Service type=ClusterIP name=mongo port=27017 targetport=27017 kind=Endpoints name=mongo ip=10.200.0.2 port=27017

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EXTERNAL SERVICES Database outside cluster with IP address Pods Nodes Services WebApp role=webapp replicas=2,   role=webapp External Mongo Database Service IP=10.200.0.2 port=27017 Network External Mongo Database Service IP=10.100.0.9 port=27017 Database name=mongo port=27017 targetport=27017 Endpoint IP=10.100.0.9 port=27017 kind=Service type=ClusterIP name=mongo port=27017 targetport=27017 kind=Endpoints name=mongo ip=10.200.0.9 port=27017 Connect with mongodb://mongo Database

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Pods Nodes Services Database name: mongo type: ExternalName externalName: mongo52101.domain,.name EXTERNAL SERVICES Using CNAME redirection mongodb://  :    @mongo:/dev   mongodb://:  @mongo52101.domain.name:52101/dev Cloud Mongo Database Service WebApp role=webapp replicas=2,   role=webapp .name EXTERNAL SERVICE Connecting to Service with dynamic URI with a static ExternalName Kubernetes service

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DATABASES

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PERSISTENT VOLUMES Host Container Host Container Host Container Data in Container Data lost when Container terminates Data lost when Host terminates Independent of Container & Host Data in a Host Volume Networked Volume Data lost when Cloud instance terminates Data lost when Container terminates Independent of   Container &   Cloud instance DATA PERSISTENCE

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1. Maintains a sticky network ID/name across restarts  e.g. mongo-0, mongo-1, mongo-2 2. Ordered Operations with ordinal index   e.g. name-0, name-1, name-2 3. Stable, persistent storage (linked to ordinal index/name) 4. Mandatory headless service (no single IP) for integrations KUBERNETES  STATEFULSETS

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role=mongo type=leader Nodes Pods Services Mongo StatefulSet replicas=2 role=mongo Client mongo-0 D A B C C DATABASE STATEFUL SETS StatefulSet with 2 replicas , headless service, direct access to pods pvc Read / Write Persistent Volume

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DATABASE STATEFUL SETS role=mongo type=leader role=mongo type=follower Nodes Pods Services Client Mongo-0 Mongo-1 D A B C C Mongo StatefulSet replicas=2 role=mongo pvc pvc Read / Write Read / Only Persistent Volume

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role=mongo type=leader role=mongo type=follower role=mongo type=follower Nodes Pods Services Mongo-0 Mongo-1 Mongo-2 pvc pvc pvc Persistent Volume A B C C D Mongo StatefulSet replicas=3 role=mongo Read / Write Read / Only Read / Only DATABASE STATEFUL SETS Scale to 3 replicas Client

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role=mongo type=leader role=mongo type=follower role=mongo type=follower Nodes Pods Services Mongo-0 Mongo-1 Mongo-2 pvc pvc pvc Persistent Volume A B C D Mongo StatefulSet replicas=3 role=mongo DATABASE STATEFUL SETS Unresponsive Pod Client

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role=mongo type=leader role=mongo type=follower Nodes Pods Services Mongo-0 Mongo-1 pvc pvc Persistent Volume A B D role=mongo type=follower Mongo-2 pvc C Mongo StatefulSet replicas=3 role=mongo DATABASE STATEFUL SETS Auto recovery Client

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DATABASE MIGRATIONS

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Application v3 Development Application V2 Test Application v1 Production DB v1 DB v2 DB v3 CI/CD PIPELINE Version control database updates, ex: flyway V3__add_table_scooter.sql V2__add_table_truck.sql V1__add_table_car.sql

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DATABASE MIGRATIONS Version control database updates with Containers CONTAINER IMAGE CONTAINER BUILD FILE SQL MIGRATION SCRIPT Source Code Repository V2__add_table.sql Source Code Repository V2__add_table.sql /var/flyway/data Flyway flyway-mydb:v2.0.0 Registry + Dockerfile

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Nodes Pods Services postgresql-0 Persistent Volume A B D C PostgreSQL StatefulSet replicas=1 role=postgresq pvcl DATABASE MIGRATION StatefulSet deployment with headless Service v1

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Nodes Pods Services postgresql-0 Persistent Volume A B D C PostgreSQL StatefulSet replicas=1 role=postgresql Pvc DATABASE MIGRATIONS Create a Job for Flyway Flyway Job Secrets = Database Connection Info v1 flyway-mydb:v2.0.0 Image Registry Flyway

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role=postgressql type=primary Nodes Pods Services postgresql-0 Persistent Volume A B D C PostgreSQL StatefulSet replicas=1 role=postgresql pvc DATABASE MIGRATIONS Apply schema changes to database Flyway Job Secrets = Database Connection Info V2 flyway-mydb:v2.0.0 Flyway

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role=postgresql type=primary Nodes Pods Services postgresql-0 Persistent Volume A B D C PostgreSQL StatefulSet replicas=1 role=postgresql Pvc DATABASE MIGRATIONS Version control for database with Kubernetes V2

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INFRASTRUCTURE

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MONITORING CONSIDERATIONS Kubernetes* Container* Host Cluster services, services, pods,   deployments metrics Container native metrics Traditional resource metrics - cpu, memory, network, storage prometheus + grafana kubernetes-state-metrics probes Stack Metrics Tool node-exporter kubelet:cAdvisor Microservices Distributed applications - traditional app metrics - service discovery - distributed tracing prometheus + grafana jaeger tracing istio

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ARCHITECTURE CONSIDERATIONS Optimize for… Cluster   per app / data / location, Short lived Data Sensitive, e.g. Finance Multi-AZ, Multi/  Hybrid  cloud Production, Mission   critical Security Scale Availability Latency Portability Performance Large cluster, multi/  hybrid cloud Internet, SaaS Efficiency Large cluster, Bare Metal, Recreate Many apps, Dev/ Test Consistent  OS & Kubernetes version 1 app anywhere, e.g. ISVs Local, Small Cluster IoT, Retail Bare metal (Multus, SR-IOV, NFD, Scheduler, CPU pin) HPC, AI/ML, NFV

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WHAT’S NEXT

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Traffic Control Service Resiliency Chaos Testing Observ- ability Security SERVICE MESH WITH ISTIO Dedicated infrastructure layer for making service-to-service communication   safe, fast, and reliable Deploy as a lightweight side-car network proxy

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OPERATORS AUTOMATED OPERATIONS WITH OPERATORS Automate operational lifecycle at Scale  including packaging, deploying, managing  of Kubernetes applications Takes human operational  knowledge and encodes   it into software Watches over your Kubernetes environment  and uses its current state to make decisions in milliseconds.

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KNATIVE FOR SERVERLESS

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Deployment Frequency Lead Time Deployment  Failure Rate Mean Time to Recover 99.999 Service Availability DEVSECOPS METRICS Compliance Score

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THANK YOU linkedin: Chris Van Tuin email: cvantuin@redhat.com twitter: @chrisvantuin