Briefly, this error occurs when Elasticsearch is unable to retrieve the specified user token, possibly due to incorrect token ID, expired token, or issues with the security settings. To resolve this, you can try the following: 1) Verify the token ID and ensure it’s correct. 2) Check if the token has expired and if so, generate a new one. 3) Review your Elasticsearch security settings, specifically those related to token-based authentication. 4) Ensure that the user associated with the token has the necessary permissions.
This guide will help you check for common problems that cause the log ” failed to get token [” + userToken.getId() + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.
Log Context
Log “failed to get token [” + userToken.getId() + “]” classname is TokenService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
// the token is not valid
if (isShardNotAvailableException(e)) {
logger.warn("failed to get access token because index is not available");
listener.onResponse(null);
} else {
logger.error(() -> "failed to get token [" + userToken.getId() + "]"; e);
listener.onFailure(e);
}
});
client::get
)
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