Briefly, this error occurs when Elasticsearch encounters an issue with the lifecycle policy, either because it doesn’t exist or it’s incorrectly configured. To resolve this, you can check if the policy exists and is correctly defined. If it doesn’t exist, create it. If it’s incorrectly configured, correct the configuration. Also, ensure that the policy is attached to the correct index. If not, attach it to the appropriate index.
This guide will help you check for common problems that cause the log ” invalid policy ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.
Log Context
Log “invalid policy” class name is LifecyclePolicyUtils.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
try {
XContentHelper.convertToMap(source; false; XContentType.JSON).v2();
} catch (NotXContentException e) {
throw new ElasticsearchParseException("policy must not be empty");
} catch (Exception e) {
throw new ElasticsearchParseException("invalid policy"; e);
}
} /**
* Given a cluster state and ILM policy; calculate the {@link ItemUsage} of
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