kubectl -n kube-system get cep You should see kube-dns-xxx or coredns-xxx pods. In order for the en�re system to come up, the following components have to be running at the same �me: kube-dns or coredns extends the etcd-operator to guarantee quorum, auto-create cer�ficates, and manage compac�on: Automa�c re-crea�on of the etcd cluster when the cluster loses quorum. The standard etcd-operator will refuse to etcd cluster looses quorum, the etcd cluster is automa�cally re- created by the cilium-etcd-operator. Cilium will automa�cally recover and re- create all state in etcd. This opera�on can take can couple

the etcd-operator to guarantee quorum, auto-create certificates, and manage compaction: Automatic re-creation of the etcd cluster when the cluster loses quorum. The standard etcd-operator will refuse etcd cluster looses quorum, the etcd cluster is automatically re-created by the cilium-etcd-operator. Cilium will automatically recover and re-create all state in etcd. This operation can take can couple cause minor disruptions as ongoing distributed locks are invalidated and security identities have to be re-allocated. etcd is very sensitive to disk IO latency and requires fast disk access at a certain scale

1:443: connect: no route to host" subsys=daemon As Kind is running nodes as containers in Docker, they’re sharing your host machines’ kernel. If Host-Reachable Services wasn’t disabled, the eBPF programs attached --config=kind-cluster2.yaml Deploy Cilium This is the same helm command as from Install Cilium. However we’re enabling managed etcd and setting both cluster-name and cluster-id for each cluster. Make sure context the etcd-operator to guarantee quorum, auto-create certificates, and manage compaction: Automatic re-creation of the etcd cluster when the cluster loses quorum. The standard etcd-operator will refuse

1:443: connect: no route to host" subsys=daemon As Kind is running nodes as containers in Docker, they’re sharing your host machines’ kernel. If Host-Reachable Services wasn’t disabled, the eBPF programs attached with GKE (non-Dataplane V2), in which node reboots and upgrades will undo changes made by Cilium and re-instate the default CNI configuration. To help overcome this situation to the largest possible extent running while the port forward is active. You can interrupt the command to abort the port forward and re-run the command to make the UI accessible again. If your browser has not automatically opened the

1:443: connect: no route to host" subsys=daemon As Kind is running nodes as containers in Docker, they’re sharing your host machines’ kernel. If Host-Reachable Services wasn’t disabled, the eBPF programs attached --config=kind-cluster2.yaml Deploy Cilium This is the same helm command as from Install Cilium. However we’re enabling managed etcd and setting both cluster-name and cluster-id for each cluster. Make sure context with GKE (non-Dataplane V2), in which node reboots and upgrades will undo changes made by Cilium and re-instate the default CNI configuration. To help overcome this situation to the largest possible extent

1:443: connect: no route to host" subsys=daemon As Kind is running nodes as containers in Docker, they’re sharing your host machines’ kernel. If Host-Reachable Services wasn’t disabled, the eBPF programs attached --config=kind-cluster2.yaml Deploy Cilium This is the same helm command as from Install Cilium. However we’re enabling managed etcd and setting both cluster-name and cluster-id for each cluster. Make sure context the etcd-operator to guarantee quorum, auto-create certificates, and manage compaction: Automatic re-creation of the etcd cluster when the cluster loses quorum. The standard etcd-operator will refuse

1:443: connect: no route to host" subsys=daemon As Kind is running nodes as containers in Docker, they’re sharing your host machines’ kernel. If Host-Reachable Services wasn’t disabled, the eBPF programs attached --config=kind-cluster2.yaml Deploy Cilium This is the same helm command as from Install Cilium. However we’re enabling managed etcd and setting both cluster-name and cluster-id for each cluster. Make sure context the etcd-operator to guarantee quorum, auto-create certificates, and manage compaction: Automatic re-creation of the etcd cluster when the cluster loses quorum. The standard etcd-operator will refuse

particularly for children, is essential! Whether you're young or old, you should learn some bits of knowledge about eBPF in this book. Hold on tight, we're taking off! Far away, beyond skies, asteroids, and inside.” “Would you like to assist?” “Of course”, answered eBee, “We wish to help, to innovate, and we’re on your side!” eBPF comes from the original Berkeley Packet Filter (used in tcpdump), but now extends faster Kernel types and data structures are in constant flux. eBPF "Compile Once — Run Everywhere" (CO-RE) leverages BPF Type Format (BTF) to make programs portable across kernel versions, especially if

@zainasgar Co-Founder/CEO Pixie (@pixie_run) & Adjunct Professor of CS @ Stanford DEVELOPER PROBLEM You’re an application developer, and your program is misbehaving. ● No problem. You have logs! Right? ● Printf("iterations: %d\n”, iterations) YOUR OPTIONS Option 1: Add a log to your program, re-compile and re-deploy. ○ This can be simple log statements, or ○ More comprehensive like Open tracing. Option

00 key: 09 03 value: 00 Found 3 elements 0x0007 = 7 0x004d = 77 0x0309 = 777 dump map contents Re-scan open ports on VM host $ nmap -sT -p 1-1024 192.168.122.221 Starting Nmap 7.80 ( https://nmap