Unable to create ip filter for rule ” + ruleType + ” ” + value + ” – How to solve this Elasticsearch error

Opster Team

March-22, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many configuration errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” unable to create ip filter for rule ” + ruleType + ” ” + value + ” ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: filter, plugin.

Log Context

Log “unable to create ip filter for rule [” + ruleType + ” ” + value + “]”classname  is SecurityIpFilterRule.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

try {
 Tuple inetAddressIntegerTuple = parseSubnetMask(value);
 return new IpSubnetFilterRule(inetAddressIntegerTuple.v1(); inetAddressIntegerTuple.v2(); filterRuleType);
 } catch (UnknownHostException e) {
 String ruleType = (isAllowRule ? "allow " : "deny ");
 throw new ElasticsearchException("unable to create ip filter for rule [" + ruleType + " " + value + "]"; e);
 } else {
 // pattern rule - not netmask
 StringJoiner rules = new StringJoiner(";");
 for (String pattern : values) {


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