accessible to anyone within a default cluster. • The Envoy Proxy admin port is exposed via the Istio sidecar and would allow a malicious workload to override or compromise their own Istio configuration. Strategic Configuration 5 Cryptography 1 Data Exposure 3 Data Validation 2 Component Breakdown Istio 10 Istio Sidecar 3 Istioctl 2 Pilot 3 Key Critical High Medium Low Informational 3 | Google Istio Security Assessment Medium Default Sidecar Image Not Hardened 001 Low The Sidecar Does Not Use Apparmor/Seccomp By Default 005 Low Insecure File Permissions Set 007 Low Istio Client-Side Bypasses 014 Low Sidecar Envoy Administrative

Stabilizing Istio ● Istio sidecar proxy specifications ● Kubernetes shortcomings with sidecar containers ○ Controlling containers lifecycle ○ Autoscaling pods with sidecar containers ● Are you prepared Guardrails for Istio 11 Istio sidecar proxy specifications Stabilizing Istio Pod App container Sidecar container All incoming traffic must flow through the sidecar first when entering the pod All outgoing traffic must flow through the sidecar before leaving the pod 12 What happens when the sidecar container is not ready? Stabilizing Istio Pod App container Sidecar container (not running) The

6. 准备安装 SERVICE MESH 1.7. 安装 OPERATOR 1.8. 创建 SERVICEMESHCONTROLPLANE 1.9. 在服务网格中添加服务 1.10. 启用 SIDECAR 注入 1.11. 升级 SERVICE MESH 1.12. 管理用户和配置集 1.13. 安全性 1.14. 管理服务网格中的流量 1.15. 指标、日志和追踪 1.16. 性能和可扩展性 DaemonSet 重命名 在此发行版本中，istio-node DaemonSet 被重命名为 istio-cni-node，以匹配上游 Istio 中的名称。 1.2.2.4.5. Envoy sidecar 网络更改 Istio 1.10 更新了 Envoy，默认使用 eth0 而不是 lo 将流量发送到应用程序容器。 1.2.2.4.6. Service Mesh Control Plane ServiceMeshControlPlane 更新时重新创建，则该网关会被删除且永远不会重新创建。 OSSM-1168 当以单个 YAML 文件形式创建服务网格资源时，Envoy proxy sidecar 不会可靠地注 入 pod。当单独创建 SMCP、SMMR 和 Deployment 资源时，部署可以正常工作。 OSSM-1052 在为服务网格 control plane 中为 ingressgateway

to RCE (High) DAP-01-003 WP1: HTTP Parameter Pollution through invocation (Low) DAP-01-004 WP1: Sidecar injector API exposes sensitive client certificates (High) DAP-01-005 WP2: Inadequate separation leads to cluster takeover (Critical) DAP-01-006 WP2: Cross-Site Request Forgery into local Dapr sidecar (Medium) DAP-01-008 WP2: Dapr allows extraction of Kubernetes secrets by default (High) DAP-01-010 Missing authentication from Dapr API to application (Medium) Miscellaneous Issues DAP-01-001 WP1: Sidecar allows MDNS probes to docker network (Info) DAP-01-007 WP2: HTTP Parameter Pollution in Azure SignalR

a component that is not enabled by default. The vulnerability had the potential to crash a Dapr sidecar with an out-of-memory denial of service attack vector. We found the vulnerability a�er performing Kubernetes, Dapr is deployed as a sidecar container in the same pod as the userʼs application. When running Dapr on a virtual machine, Dapr runs as a separate sidecar process. In both cases, the application through HTTP or gRPC calls: If the user has multiple applications running with Dapr, each has a sidecar next to it: Dapr comes with a set of built-in components - a form of cloud-native primitives - that

作便捷度上取 得令人满意的平衡 传统Sidecar升级方式的缺点 3 为什么需要服务网格数据面热升级 Why do we need Hot-Upgrade for ServiceMesh Data-Plane • 只替换/重启Sidecar • 替换/重启过程中进/出不会出现请求失败，连接失败 • 易于运维，可以控制升级策略 理想的Sidecar升级 4 • 为什么需要服务网格数据面热升级 Implement Hot-Upgrade 6 • Sidecar生命周期管理能力 • 启动两个Sidecar，以进行Envoy热重启的排水流程两个实例并存的阶段 • 能够对整个热升级流程中的镜像替换进行控制 实现热升级 Implement Hot-Upgrade 7 • Sidecar生命周期管理能力 • 启动两个Sidecar，以进行Envoy热重启的排水流程两个实例并存的阶段 • 能够对整个热升级流程中的镜像替换进行控制 • 更强大的生命周期管理组件 • 对需要热升级的Pod注入两个Container，Sidecar & Empty • 支持对热升级过程中Sidecar Container生命周期进行管理 实现热升级 Implement Hot-Upgrade 8 • Envoy热重启参数的协商 • PilotAgent需要使用正确的Epoch参数启动Envoy，才能触发热重启

components Handles Custom Resources Handles actual traffic Can be standalone or sidecar Other Container Istio Sidecar Proxy Istio Ingress Gateway Istio Egress Gateway @rytswd Istio Operator istio-operator Example ● Data Plane with 5 proxies ● Each pod knows endpoint details of other pods ● Can be Sidecar or Gateway component #IstioCon Brush up on Istio resources (cont’d) Target Audience What to expect About GitOps Second Demo What’s next? Control Plane Data Plane istiod Some container Istio Sidecar Proxy Istio Ingress Gateway Istio Egress Gateway @rytswd DestinationRule ServiceEntry Gateway

services 1) Deploy bookinfo services with istio sidecar without reviews-v2 2) Deploy bookinfo gateway 3) Deploy reviews-v2 service without istio sidecar （ kubectl label namespace default istio-injec services 1) Deploy bookinfo services with istio sidecar without reviews-v2 2) Deploy bookinfo gateway 3) Deploy reviews-v2 service without istio sidecar （ kubectl label namespace default istio-injec Istio ● Decide what type of traffic the client sidecar to send automatically ○ If DestinationRule is configured, respect it ○ If server has a sidecar and allows mTLS, send mTLS – reviews-v1 & v3 ○

Edge Sidecar architecture Sidecar architecture Standard APIs accessed over http/gRPC protocols from user service code e.g. http://localhost:3500/v1.0/state/inventory Runs as local “sidecar library” Actors Distributed tracing Extensible HTTP API gRPC API Application code Dapr self-hosted Sidecar architecture State stores Publish and subscribe Resource bindings Scanning for events Application save state Service code B Service code A Input/output 1 Components Dapr Kubernetes-hosted Sidecar architecture Component management Deploys and manages Dapr Any cloud or edge infrastructure Publish

ShardingSphere‐Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1.3 ShardingSphere‐Sidecar(TODO) . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1.4 Hybrid Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268 4.3 ShardingSphere‐Sidecar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268 4.3.1 Introduction . consisted of a set of distributed database solu‐ tions, including 3 independent products, JDBC, Proxy & Sidecar (Planning). They all provide functions of data scale out, distributed transaction and distributed