发生了什么？
在initContainer执行其操作和启动探针之间似乎存在一些时间同步或竞争条件。以这个例子为例：

containers:
    - name: myapp
      image: alpine:latest
      command: ['sh', '-c', 'tail -F /opt/logs.txt']
      volumeMounts:
        - name: data
          mountPath: /opt
  initContainers:
    - name: logshipper
      image: alpine:latest
      restartPolicy: Always
      command: ['sh', '-c', 'sleep 3 ; echo "containerId: $(cat /proc/1/uid_map  | awk "{ print $3 }") logging $(date +%s)" >> /opt/logs.txt']
      startupProbe:
        exec:
          command: ["true"]
        periodSeconds: 1
        initialDelaySeconds: 0
      volumeMounts:
        - name: data
          mountPath: /opt

这个例子通过了启动探针，容器myapp启动正常，但是如果我移除了sleep或者将其缩短到少于3秒的时间，那么myapp容器永远不会启动。

你期望发生什么？
myapp应该由于startupProbe通过而启动，但似乎执行得太慢了。

我们如何尽可能精确地最小化地重现它？
提供上面的例子，但启用sidecar功能门，并使用以下示例：

kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
featureGates:
  "SidecarContainers": true

pod:

apiVersion: v1
kind: Pod
metadata:
  name: pod
spec:
  volumes:
  - name: data
    emptyDir:
      sizeLimit: 500Mi
  containers:
    - name: myapp
      image: alpine:latest
      command: ['sh', '-c', 'tail -F /opt/logs.txt']
      volumeMounts:
        - name: data
          mountPath: /opt
  initContainers:
    - name: logshipper
      image: alpine:latest
      restartPolicy: Always
      command: ['sh', '-c', 'sleep 5 ; echo "containerId: $(cat /proc/1/uid_map  | awk "{ print $3 }") logging $(date +%s)" >> /opt/logs.txt']
      startupProbe:
        exec:
          command: ["true"]
        periodSeconds: 1
        initialDelaySeconds: 0
      volumeMounts:
        - name: data
          mountPath: /opt
    - name: logshipper1
      image: alpine:latest
      restartPolicy: Always
      command: ['sh', '-c', 'sleep 5 ; echo "containerId: $(cat /proc/1/uid_map  | awk "{ print $3 }") logging $(date +%s)" >> /opt/logs.txt']
      startupProbe:
        exec:
          command: ["true"]
        periodSeconds: 1
        initialDelaySeconds: 0
      volumeMounts:
        - name: data
          mountPath: /opt

我们需要知道其他任何信息吗？
版本是1.28

Kubernetes版本

❯ kubectl version
Client Version: v1.28.2
Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3
Server Version: v1.28.0

云提供商
本地/ Kind

操作系统版本

❯ cat /etc/os-release
NAME="Arch Linux"
PRETTY_NAME="Arch Linux"
ID=arch
BUILD_ID=rolling
ANSI_COLOR="38;2;23;147;209"
HOME_URL="https://archlinux.org/"
DOCUMENTATION_URL="https://wiki.archlinux.org/"
SUPPORT_URL="https://bbs.archlinux.org/"
BUG_REPORT_URL="https://bugs.archlinux.org/"
PRIVACY_POLICY_URL="https://terms.archlinux.org/docs/privacy-policy/"
LOGO=archlinux-logo

安装工具
容器运行时(CRI)和版本(如果适用)
Docker

相关插件(CNI,CSI,...)和版本(如果适用)