58bbffded4
At a high level, it switches us to a distroless base container image, but that also includes several related bits:
- Add a writable /tmp but make the rest of our filesystems read-only at runtime.
- Condense our main server binaries into a single pinniped-server binary. This saves a bunch of space in
the image due to duplicated library code. The correct behavior is dispatched based on `os.Args[0]`, and
the `pinniped-server` binary is symlinked to `pinniped-concierge` and `pinniped-supervisor`.
- Strip debug symbols from our binaries. These aren't really useful in a distroless image anyway and all the
normal stuff you'd expect to work, such as stack traces, still does.
- Add a separate `pinniped-concierge-kube-cert-agent` binary with "sleep" and "print" functionality instead of
using builtin /bin/sleep and /bin/cat for the kube-cert-agent. This is split from the main server binary
because the loading/init time of the main server binary was too large for the tiny resource footprint we
established in our kube-cert-agent PodSpec. Using a separate binary eliminates this issue and the extra
binary adds only around 1.5MiB of image size.
- Switch the kube-cert-agent code to use a JSON `{"tls.crt": "<b64 cert>", "tls.key": "<b64 key>"}` format.
This is more robust to unexpected input formatting than the old code, which simply concatenated the files
with some extra newlines and split on whitespace.
- Update integration tests that made now-invalid assumptions about the `pinniped-server` image.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
160 lines
4.7 KiB
YAML
160 lines
4.7 KiB
YAML
#! Copyright 2020-2021 the Pinniped contributors. All Rights Reserved.
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#! SPDX-License-Identifier: Apache-2.0
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#@ load("@ytt:data", "data")
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#@ load("@ytt:json", "json")
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#@ load("helpers.lib.yaml", "defaultLabel", "labels", "namespace", "defaultResourceName", "defaultResourceNameWithSuffix", "getAndValidateLogLevel")
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#@ if not data.values.into_namespace:
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---
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apiVersion: v1
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kind: Namespace
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metadata:
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name: #@ data.values.namespace
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labels: #@ labels()
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#@ end
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---
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apiVersion: v1
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kind: ServiceAccount
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metadata:
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name: #@ defaultResourceName()
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namespace: #@ namespace()
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labels: #@ labels()
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---
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: #@ defaultResourceNameWithSuffix("static-config")
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namespace: #@ namespace()
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labels: #@ labels()
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data:
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#@yaml/text-templated-strings
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pinniped.yaml: |
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apiGroupSuffix: (@= data.values.api_group_suffix @)
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names:
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defaultTLSCertificateSecret: (@= defaultResourceNameWithSuffix("default-tls-certificate") @)
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labels: (@= json.encode(labels()).rstrip() @)
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(@ if data.values.log_level: @)
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logLevel: (@= getAndValidateLogLevel() @)
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(@ end @)
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---
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#@ if data.values.image_pull_dockerconfigjson and data.values.image_pull_dockerconfigjson != "":
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apiVersion: v1
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kind: Secret
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metadata:
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name: image-pull-secret
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namespace: #@ namespace()
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labels: #@ labels()
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type: kubernetes.io/dockerconfigjson
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data:
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.dockerconfigjson: #@ data.values.image_pull_dockerconfigjson
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#@ end
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---
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: #@ defaultResourceName()
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namespace: #@ namespace()
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labels: #@ labels()
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spec:
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replicas: #@ data.values.replicas
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selector:
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matchLabels: #@ defaultLabel()
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template:
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metadata:
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labels: #@ defaultLabel()
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spec:
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securityContext:
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readOnlyRootFilesystem: true
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runAsUser: #@ data.values.run_as_user
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runAsGroup: #@ data.values.run_as_group
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serviceAccountName: #@ defaultResourceName()
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#@ if data.values.image_pull_dockerconfigjson and data.values.image_pull_dockerconfigjson != "":
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imagePullSecrets:
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- name: image-pull-secret
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#@ end
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containers:
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- name: #@ defaultResourceName()
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#@ if data.values.image_digest:
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image: #@ data.values.image_repo + "@" + data.values.image_digest
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#@ else:
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image: #@ data.values.image_repo + ":" + data.values.image_tag
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#@ end
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imagePullPolicy: IfNotPresent
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command:
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- pinniped-supervisor
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- /etc/podinfo
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- /etc/config/pinniped.yaml
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resources:
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requests:
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cpu: "100m"
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memory: "128Mi"
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limits:
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cpu: "100m"
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memory: "128Mi"
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volumeMounts:
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- name: config-volume
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mountPath: /etc/config
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- name: podinfo
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mountPath: /etc/podinfo
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ports:
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- containerPort: 8080
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protocol: TCP
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- containerPort: 8443
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protocol: TCP
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env:
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#@ if data.values.https_proxy:
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- name: HTTPS_PROXY
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value: #@ data.values.https_proxy
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#@ end
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#@ if data.values.no_proxy:
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- name: NO_PROXY
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value: #@ data.values.no_proxy
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#@ end
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livenessProbe:
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httpGet:
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path: /healthz
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port: 8080
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scheme: HTTP
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initialDelaySeconds: 2
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timeoutSeconds: 15
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periodSeconds: 10
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failureThreshold: 5
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readinessProbe:
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httpGet:
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path: /healthz
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port: 8080
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scheme: HTTP
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initialDelaySeconds: 2
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timeoutSeconds: 3
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periodSeconds: 10
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failureThreshold: 3
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volumes:
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- name: config-volume
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readOnly: true
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configMap:
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name: #@ defaultResourceNameWithSuffix("static-config")
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- name: podinfo
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readOnly: true
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downwardAPI:
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items:
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- path: "labels"
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fieldRef:
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fieldPath: metadata.labels
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- path: "namespace"
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fieldRef:
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fieldPath: metadata.namespace
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- path: "name"
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fieldRef:
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fieldPath: metadata.name
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#! This will help make sure our multiple pods run on different nodes, making
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#! our deployment "more" "HA".
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affinity:
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podAntiAffinity:
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preferredDuringSchedulingIgnoredDuringExecution:
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- weight: 50
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podAffinityTerm:
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labelSelector:
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matchLabels: #@ defaultLabel()
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topologyKey: kubernetes.io/hostname
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