across nodes Inconsistent Kubernetes experience across clouds and bare-metal Security/compliance issues due to extra bloat in the OS Requires automation tools to manage the cluster Hard to keep up with Kubernetes release schedule
reason about the code Static linking Great concurrency primitives Wrappers for low-level OS primitives (e.g. netlink) Easy integration with other services in Go
{ Run(eventSink EventSink) error Stop() } [Waiting]: Waiting for service "containerd" to be "up", service "kubeadm" to be "up", file "/var/lib/kubelet/kubeadm-flags.env" to exist (1m28s ago) [Waiting]: Waiting for service "kubeadm" to be "up", file "/var/lib/kubelet/kubeadm-flags.env" to exist (1m26s ago) [Waiting]: Waiting for file "/var/lib/kubelet/kubeadm-flags.env" to exist (52s ago) [Preparing]: Running pre state (36s ago) [Preparing]: Creating service runner (36s ago) [Running]: Started task kubelet (PID 551) for container kubelet (36s ago) [Running]: Health check failed: Get http://127.0.0.1:10248/healthz: dial tcp 127.0.0.1:10248: connect: connection refused (34s ago) [Running]: Health check successful (29s ago)
Condition represents anything which can be waited for Conditions are composable [Waiting]: Waiting for service "containerd" to be "up", service "kubeadm" to be "up", file "/var/lib/kubelet/kubeadm-flags.env" to exist (1m28s ago) [Waiting]: Waiting for service "kubeadm" to be "up", file "/var/lib/kubelet/kubeadm-flags.env" to exist (1m26s ago) [Waiting]: Waiting for file "/var/lib/kubelet/kubeadm-flags.env" to exist (52s ago)
RUN go mod download RUN go mod verify COPY ./cmd ./cmd COPY ./pkg ./pkg RUN go build ./... cached until Go modules requirements change cache invalidates with source code changes
hard to hit conditions. • integration: ◦ boot Talos in local mode as set of docker containers. ◦ integration test as part of the build. • Cluster API: ◦ boot inception cluster, create more clusters on different cloud providers via CAPI. • conformance: ◦ run conformance tests against cluster. • upgrade tests: ◦ upgrade existing Talos cluster. • bare-metal tests: ◦ hardware, networking, various configurations.
require containerd Should be same containerd as OS: requires rootfs Run tests in buildkit! Russian doll: buildkit - runc - test - containerd - runc - container
1 worker, HA control plane) as Docker containers 2. Wait for kubeadm to boot up Kubernetes cluster 3. Deploy Kubernetes addons (CNI, DNS, …) 4. Wait for all the nodes to report ‘Ready’ Overall time: ~5 mins