Monitoring Index Size Trends in Elasticsearch: Monthly and Daily Statistics
Tracking the growth or reduction in index sizes is crucial for effective cluster management in Elasticsearch. It helps administrators optimize…
Threats
Understanding Key OpenSearch Dashboard Logging Settings
OpenSearch Dashboards is a powerful tool for visualizing and interacting with your OpenSearch data. However, to make the most of…
JVM GC Monitor Service Overhead: Root Cause and Recommendations
Problem Description: The JvmGcMonitorService overhead warnings indicate that the Java Virtual Machine (JVM) is performing Old Generation Garbage Collection (GC).…
UAC-0099 Attack Detection: Cyber-Espionage Activity Against Ukrainian State Agencies Using WinRAR Exploit and LONEPAGE Malware
The UAC-0099 hacking collective, which has been launching targeted cyber-espionage attacks against Ukraine since the second half of 2022, resurfaces…
How to Deal with the Warning: “No ‘Basic Authorization’ header, send 401 and ‘WWW-Authenticate Basic’”
If you’ve worked with OpenSearch or Elasticsearch and encountered "No 'Basic Authorization' header, send 401 and 'WWW-Authenticate Basic'" warning in…
Fluentd: How to Make Nested Hash from Dot-Separated Keys
When a log record has keys like test.test, you can use two methods record_transformer and explode plugin, to process these…
Essential Dev Tools Commands for Elasticsearch & OpenSearch Administrators
As an Elasticsearch administrator, using the Dev Tools Console in Kibana can significantly simplify cluster management and troubleshooting. Below is…
How to Increase index.max_regex_length in OpenSearch
The error index.max.regex_length in OpenSearch is related to the maximum length of regular expressions that can be used in index…
Secret Blizzard Attack Detection: The russia-Linked APT Group Targets Ukraine via Amadey Malware to Deploy the Updated Kazuar Backdoor Version
Hot on the heels of russia-linked BlueAlpha’s exploitation of Cloudflare Tunneling services to spread GammaDrop malware, another russia-backed state-sponsored APT…
Fluentd: How to Change Tags During Log Processing.
I have a case where I need to drop unnecessary logs. I found a plugin that helps do that.The rewrite_tag_filter…