在 kubernetes statefulset 中为 pod 设置自定义序号，而不是默认的 0答案

【问题标题】：Set custom oridinal number for pod in kubernetes statefulset not the default 0在 kubernetes statefulset 中为 pod 设置自定义序号，而不是默认的 0
【发布时间】：2019-07-26 06:11:23
【问题描述】：

在Kubernetes statefulset中，序号以0开头--> N。有什么方法可以将起始序号设置为自定义数字。

redis-cluster-10   1/1     Running   0          12h
redis-cluster-11   1/1     Running   2          17h
redis-cluster-12   1/1     Running   0          17h
redis-cluster-13   1/1     Running   0          17h
redis-cluster-14   1/1     Running   2          17h
redis-cluster-15   1/1     Running   0          17h

【问题讨论】：

标签： kubernetes kubernetes-statefulset

【解决方案1】：

没有。它不支持开箱即用。您可能需要自定义 statefulset 控制器。

【讨论】：

【解决方案2】：

我认为这是您可能感兴趣的部分：

https://github.com/kubernetes/kubernetes/blob/master/pkg/controller/statefulset/stateful_set_utils.go

// getParentNameAndOrdinal gets the name of pod's parent StatefulSet and pod's ordinal as extracted from its Name. If
// the Pod was not created by a StatefulSet, its parent is considered to be empty string, and its ordinal is considered
// to be -1.
func getParentNameAndOrdinal(pod *v1.Pod) (string, int) {
    parent := ""
    ordinal := -1
    subMatches := statefulPodRegex.FindStringSubmatch(pod.Name)
    if len(subMatches) < 3 {
        return parent, ordinal
    }
    parent = subMatches[1]
    if i, err := strconv.ParseInt(subMatches[2], 10, 32); err == nil {
        ordinal = int(i)
    }
    return parent, ordinal
}

【讨论】：