英文:
Kubernetes: How to sort by complex keys (eg, node-role.kubernetes.io/general)?
问题
按照简单键进行排序很简单和容易。这两种方法都可以正常工作。
kubectl get nodes --sort-by=.metadata.name -o wide
kubectl get nodes --sort-by=.metadata.labels.affinity -o wide
我现在尝试按照复杂键进行排序，比如.metadata.labels."clm.status"或者更重要的.metadata.labels."kubernetes.io/roles"。
从功能上讲，我可以使用不同的方式按照kubernetes.io/roles进行排序，即排序加上其他Linux命令，所以请不要提供非K8s替代方案。我只想看到如何使用原生K8s *get命令*按照这些复杂键进行排序。
我尝试了许多排列组合，包括但不限于：
$ kubectl get nodes --sort-by=.metadata.labels.kubernetes.io.roles -o wide
未找到资源
$ kubectl get nodes --sort-by=.metadata.labels.'kubernetes.io.roles' -o wide
未找到资源
$ kubectl get nodes --sort-by=.metadata.labels.'kubernetes.io/roles' -o wide
未找到资源
$ kubectl get nodes --sort-by=.metadata.labels."kubernetes.io/roles" -o wide
未找到资源
英文:
Sorting by simple keys is straightforward and easy. Both of these work just fine.
kubectl get nodes --sort-by=.metadata.name -o wide
kubectl get nodes --sort-by=.metadata.labels.affinity -o wide
I'm trying to now sort by complex keys such as .metadata.labels."clm.status" or, more importantly, .metadata.labels."kubernetes.io/roles".
Functionally speaking, I am able to sort by the kubernetes.io/roles using a different way, ie, sort plus other linux commands, so plzzzzz don't give me non-k8s alternatives. I just want to see how to sort using native k8s get command with these complex keys.
I tried many permutations, including but not limited to:
$ kubectl get nodes --sort-by=.metadata.labels.kubernetes.io.roles -o wide
No resources found
$ kubectl get nodes --sort-by=.metadata.labels.'kubernetes.io.roles' -o wide
No resources found
$ kubectl get nodes --sort-by=.metadata.labels.'kubernetes.io/roles' -o wide
No resources found
$ kubectl get nodes --sort-by=.metadata.labels."kubernetes.io/roles" -o wide
No resources found
答案1
得分: 2
看起来解决方法是在标签中使用\转义点，例如：
kubectl get nodes \
--sort=by=.metadata.labels.kubernetes\\.io/roles
或者如果您更喜欢，可以在外部使用单引号以避免不必要的转义转义字符：
kubectl get nodes \
--sort-by='.metadata.labels.kubernetes\.io/roles'
英文:
It looks like the solution is to escape the dots in your label with \, so for example:
kubectl get nodes \
--sort=by=.metadata.labels.kubernetes\\.io/roles
Or if you prefer, use single quotes on the outside to avoid having to escape the escape character:
kubectl get nodes \
--sort-by='.metadata.labels.kubernetes\.io/roles`
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