small independent services that communicate with each other via APIs using lightweight protocols like HTTP. Microservices applications tend to be highly dynamic, with individual containers getting started that need to be updated with a continuously growing frequency. Protocol ports (e.g. TCP port 80 for HTTP traffic) can no longer be used to differentiate between application traffic for security purposes contrast to IP address identification in traditional systems) and can filter on application-layer (e.g. HTTP). As a result, Cilium not only makes it simple to apply security policies in a highly dynamic environment

small independent services that communicate with each other via APIs using lightweight protocols like HTTP. Microservices applications tend to be highly dynamic, with individual containers getting started that need to be updated with a continuously growing frequency. Protocol ports (e.g. TCP port 80 for HTTP traffic) can no longer be used to differentiate between application traffic for security purposes contrast to IP address identification in traditional systems) and can filter on application-layer (e.g. HTTP). As a result, Cilium not only makes it simple to apply security policies in a highly dynamic environment

to develop and contribute modifications to the Cilium code or documentation. A hands-on tutorial [https://play.instruqt.com/isovalent/invite/j4maqox5r1h5] in a live environment is also available for users communicating with each other? How frequently? What does the service dependency graph look like? What HTTP calls are being made? What Kafka topics does a service consume from or produce to? Network monitoring Is it an application or network problem? Is the communication broken on layer 4 (TCP) or layer 7 (HTTP)? Which services have experienced a DNS resolution problem in the last 5 minutes? Which services

to develop and contribute modifications to the Cilium code or documentation. A hands-on tutorial [https://play.instruqt.com/isovalent/invite/j4maqox5r1h5] in a live environment is also available for users communicating with each other? How frequently? What does the service dependency graph look like? What HTTP calls are being made? What Kafka topics does a service consume from or produce to? Network monitoring Is it an application or network problem? Is the communication broken on layer 4 (TCP) or layer 7 (HTTP)? Which services have experienced a DNS resolution problem in the last 5 minutes? Which services

communicating with each other? How frequently? What does the service dependency graph look like? What HTTP calls are being made? What Kafka topics does a service consume from or produce to? Network monitoring Is it an application or network problem? Is the communication broken on layer 4 (TCP) or layer 7 (HTTP)? Which services have experienced a DNS resolution problem in the last 5 minutes? Which services monitoring What is the rate of 5xx or 4xx HTTP response codes for a particular service or across all clusters? What is the 95th and 99th percentile latency between HTTP requests and responses in my cluster

to develop and contribute modifications to the Cilium code or documentation. A hands-on tutorial [https://play.instruqt.com/isovalent/invite/j4maqox5r1h5] in a live environment is also available for users communicating with each other? How frequently? What does the service dependency graph look like? What HTTP calls are being made? What Kafka topics does a service consume from or produce to? Network monitoring Is it an application or network problem? Is the communication broken on layer 4 (TCP) or layer 7 (HTTP)? Which services have experienced a DNS resolution problem in the last 5 minutes? Which services

small independent services that communicate with each other via APIs using lightweight protocols like HTTP. Microservices applica�ons tend to be highly dynamic, with individual containers ge�ng started or that need to be updated with a con�nuously growing frequency. Protocol ports (e.g. TCP port 80 for HTTP traffic) can no longer be used to differen�ate between applica�on traffic for security purposes as contrast to IP address iden�fica�on in tradi�onal systems) and can filter on applica�on-layer (e.g. HTTP). As a result, Cilium not only makes it simple to apply security policies in a highly dynamic environment

We’ve all been there: ● “I just wish I could see the variable x when Foo() is called” Github Link: https://github.com/pixie-labs/pixie/tree/main/demos/simple-gotracing Relevant Code: // computeE computes val = ctx->ax; trace.perf_submit(ctx, &val, sizeof(val)); return 0; } eBPF Github Link: https://github.com/pixie-labs/pixie/tree/main/demos/simple-gotracing/trace_example DEMO: Go Argument Tracer like capture HTTP messages. What’s next? eBPF DEMO: HTTP Tracer eBPF https://github.com/pixie-labs/pixie https://github.com/kinvolk/inspektor-gadget Some related projects https://github.com/

5.9.1-36.vanilla.1.fc32.x86_64 vm $ bpftool version bpftool v5.9.1 Code and instructions at https://github.com/jsitnicki/ebpf-summit-2020 We will need… a TCP echo server $ sudo dnf install nmap-ncat contents Re-scan open ports on VM host $ nmap -sT -p 1-1024 192.168.122.221 Starting Nmap 7.80 ( https://nmap.org ) at 2020-10-24 21:56 CEST Nmap scan report for 192.168.122.221 Host is up (0.00014s latency) STATE SERVICE 7/tcp open echo 22/tcp open ssh 77/tcp open priv-rje 777/tcp open multiling-http Nmap done: 1 IP address (1 host up) scanned in 0.09 seconds Test echo service on ports 7, 77, 777

bpftrace with Performance Co-Pilot Andreas Gerstmayr October 28, 2020 Source: https://pcp.io https://github.com/iovisor/bcc https://bpftrace.org 2 eBPF Compiler Collection bpftrace BCC high-level tracing bits/sec, etc. Type: float, (un)signed int, string, ... Instances: e.g. sda1, sda2 4 Live Demo http://github.com/performancecopilot