</pre>
<pre>
a
_x9
ThisVariableIsExported
αβ
</pre>

<p>
Some identifiers are <a href="#Predeclared_identifiers">predeclared</a>.
</p>


<h3 id="Keywords">Keywords</h3>

<p>
The following keywords are reserved and may not be used as identifiers.
</p>
<pre class="grammar">
break        default      func         interface    select
case         defer        go           map          struct

to the following rules when accessed in the expression: - '__' escapes to '__underscores__' - '.' escapes to '__dot__' - '-' escapes to '__dash__' - '/' escapes to '__slash__' - Property names that exactly match a CEL RESERVED keyword escape to '__{keyword}__'. The keywords are:\n\t  \"true\", \"false\", \"null\", \"in\", \"as\", \"break\", \"const\", \"continue\", \"else\", \"for\", \"function\", \"if\",\n\t  \"import\", \"let\", \"loop\", \"package\", \"namespace\", \"return\".\nExamples:\n  - Rule...

- [`KT-59482`](https://youtrack.jetbrains.com/issue/KT-59482) K2: build kmm-production-sample
- [`KT-57529`](https://youtrack.jetbrains.com/issue/KT-57529) K1/K2: "IllegalStateException: not identifier: <no name provided>" with hard keywords in angle brackets
- [`KT-62032`](https://youtrack.jetbrains.com/issue/KT-62032) K2: Render flexible types as A..B instead of cryptic ft<A, B> in diagnostic messages

  - `CustomPodDNS`
  - `HugePages`
  - `MountPropagation`
  - `PersistentLocalVolumes`
- CoreDNS: The following directives or keywords are deprecated and will be removed in v1.15:
  - `upstream` option of `kubernetes` plugin, becoming default behavior in v1.15.
  - `proxy` plugin replaced by `forward` plugin

## Removed and deprecated metrics

  // +patchMergeKey=ip
  // +patchStrategy=merge
  repeated HostAlias hostAliases = 23;

  // If specified, indicates the pod's priority. "system-node-critical" and
  // "system-cluster-critical" are two special keywords which indicate the
  // highest priorities with the former being the highest priority. Any other
  // name must be defined by creating a PriorityClass object with that name.

	// file if specified.
	// +optional
	HostAliases []HostAlias
	// If specified, indicates the pod's priority. "system-node-critical" and
	// "system-cluster-critical" are two special keywords which indicate the
	// highest priorities with the former being the highest priority. Any other
	// name must be defined by creating a PriorityClass object with that name.

	"priorityClassName":             "If specified, indicates the pod's priority. \"system-node-critical\" and \"system-cluster-critical\" are two special keywords which indicate the highest priorities with the former being the highest priority. Any other name must be defined by creating a PriorityClass object with that name. If not specified, the pod priority will be default or zero if there is no default.",...

to the following rules when accessed in the expression: - '__' escapes to '__underscores__' - '.' escapes to '__dot__' - '-' escapes to '__dash__' - '/' escapes to '__slash__' - Property names that exactly match a CEL RESERVED keyword escape to '__{keyword}__'. The keywords are:\n\t  \"true\", \"false\", \"null\", \"in\", \"as\", \"break\", \"const\", \"continue\", \"else\", \"for\", \"function\", \"if\",\n\t  \"import\", \"let\", \"loop\", \"package\", \"namespace\", \"return\".\nExamples:\n  - Expression...

  // +listType=map
  // +listMapKey=ip
  repeated HostAlias hostAliases = 23;

  // If specified, indicates the pod's priority. "system-node-critical" and
  // "system-cluster-critical" are two special keywords which indicate the
  // highest priorities with the former being the highest priority. Any other
  // name must be defined by creating a PriorityClass object with that name.

	// If specified, indicates the pod's priority. "system-node-critical" and
	// "system-cluster-critical" are two special keywords which indicate the
	// highest priorities with the former being the highest priority. Any other
	// name must be defined by creating a PriorityClass object with that name.