Kubectl Jsonpath
by · 2018年03月20日 · 113 Words ·
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Kubectl Jsonpath| Function | Description | Example | Result |
|---|
| text | the plain text | kind is {.kind} | kind is List |
| @ | the current object | {@} | the same as input |
| . or [] | child operator | {.kind} or {['kind']} | List |
| .. | recursive descent | {..name} | 127.0.0.1 127.0.0.2 myself e2e |
| * | wildcard. Get all objects | {.items[*].metadata.name} | [127.0.0.1 127.0.0.2] |
| [start:end :step] | subscript operator | {.users[0].name} | myself |
| [,] | union operator | {.items[*]['metadata.name', 'status.capacity']} | 127.0.0.1 127.0.0.2 map[cpu:4] map[cpu:8] |
| ?() | filter | {.users[?(@.name=="e2e")].user.password} | secret |
| range, end | iterate list | {range .items[*]}[{.metadata.name}, {.status.capacity}] {end} | [127.0.0.1, map[cpu:4]] [127.0.0.2, map[cpu:8]] |
| "" | quote interpreted string | {range .items[*]}{.metadata.name}{"\t"}{end} | 127.0.0.1 127.0.0.2 |
- kubectl get pods -o json
$ kubectl get pods -o=jsonpath='{@}'
$ kubectl get pods -o=jsonpath='{.items[0]}'
$ kubectl get pods -o=jsonpath='{.items[0].metadata.name}'
$ kubectl get pods -o=jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.status.startTime}{"\n"}{end}'