Briefly, this error occurs when the Elasticsearch service is trying to access an index alias that has been deleted or does not exist. This could be due to a configuration error or a change in the index structure. To resolve this issue, you can either recreate the missing alias or update the service to use the correct alias. Additionally, ensure that any changes to the index structure are properly propagated to all services that use them. Regularly monitoring your Elasticsearch cluster can also help prevent such issues.
This guide will help you check for common problems that cause the log ” service provider index/alias [{}] no longer exists ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.
Log Context
Log “service provider index/alias [{}] no longer exists” classname is SamlServiceProviderIndex.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
clusterService.removeListener(clusterStateListener);
}
private void logChangedAliasState(IndexAbstraction aliasInfo) {
if (aliasInfo == null) {
logger.warn("service provider index/alias [{}] no longer exists"; ALIAS_NAME);
} else if (aliasInfo.getType() != IndexAbstraction.Type.ALIAS) {
logger.warn("service provider index [{}] does not exist as an alias; but it should be"; ALIAS_NAME);
} else if (aliasInfo.getIndices().size() != 1) {
logger.warn(
"service provider alias [{}] refers to multiple indices [{}] - this is unexpected and is likely to cause problems";
