Briefly, this error occurs when Elasticsearch is unable to fetch the total memory information from the system’s meminfo file. This could be due to incorrect file permissions or the file being corrupted. To resolve this issue, you can check the permissions of the meminfo file and ensure Elasticsearch has read access. If the file is corrupted, you may need to repair or recreate it. Additionally, ensure that the system has enough memory and that it’s properly allocated to Elasticsearch.
This guide will help you check for common problems that cause the log ” Unable to retrieve total memory from meminfo line [” + memTotalLine + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: monitor, memory.
Log Context
Log “Unable to retrieve total memory from meminfo line [” + memTotalLine + “]” classname is OsProbe.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
final String memTotalString = memTotalLine.substring(beginIdx + 9; endIdx).trim();
try {
long memTotalInKb = Long.parseLong(memTotalString);
return memTotalInKb * 1024;
} catch (NumberFormatException e) {
logger.warn("Unable to retrieve total memory from meminfo line [" + memTotalLine + "]");
return 0;
}
} else {
logger.warn("Unable to retrieve total memory from meminfo line [" + memTotalLine + "]");
return 0;
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