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urdevops
urdevops

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ELK stack & Graylog

#beginners #devops #sysadmin #ai

I faced a nasty ELK & Graylog issue today.

I am working an internship project.

The first installation tutorial I tried was in conjuction with the Filebeat.

https://docs.vultr.com/install-elastic-stack-on-ubuntu-20-04

But the project is designed with Elk stack & Graylog.

Recently I tried this article but still no success.

https://docs.vultr.com/how-to-install-graylog-on-ubuntu-20-04#prerequisites

I tried different solutions from deleting everything related elk stack but still ElasticSearch is not starting.

I am stuck kindly help.

Here are the details....

systemd details:

systemd details

journalctl -u elasticsearch.service | less

journalctl details

elasticsearch log files

[2025-06-23T17:10:32.188+0000][2927][gc,init] CardTable entry size: 512
[2025-06-23T17:10:32.190+0000][2927][gc     ] Using G1
[2025-06-23T17:10:33.013+0000][2927][gc,init] Version: 21.0.7+6-Ubuntu-0ubuntu120.04 (release)
[2025-06-23T17:10:33.013+0000][2927][gc,init] CPUs: 4 total, 4 available
[2025-06-23T17:10:33.013+0000][2927][gc,init] Memory: 8700M
[2025-06-23T17:10:33.013+0000][2927][gc,init] Large Page Support: Disabled
[2025-06-23T17:10:33.013+0000][2927][gc,init] NUMA Support: Disabled
[2025-06-23T17:10:33.013+0000][2927][gc,init] Compressed Oops: Enabled (32-bit)
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Region Size: 1M
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Min Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Initial Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Max Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Pre-touch: Enabled
[2025-06-23T17:10:33.014+0000][2927][gc,init] Parallel Workers: 4
[2025-06-23T17:10:33.014+0000][2927][gc,init] Concurrent Workers: 1
[2025-06-23T17:10:33.014+0000][2927][gc,init] Concurrent Refinement Workers: 4
[2025-06-23T17:10:33.014+0000][2927][gc,init] Periodic GC: Disabled
[2025-06-23T17:10:33.223+0000][2927][gc,metaspace] CDS archive(s) mapped at: [0x00007f5a33000000-0x00007f5a33c97000-0x00007f5a33c97000), size 13201408, SharedBaseAddress: 0x00007f5a33000000, ArchiveRelocationMode: 1.
[2025-06-23T17:10:33.224+0000][2927][gc,metaspace] Compressed class space mapped at: 0x00007f5a34000000-0x00007f5a74000000, reserved size: 1073741824
[2025-06-23T17:10:33.224+0000][2927][gc,metaspace] Narrow klass base: 0x00007f5a33000000, Narrow klass shift: 0, Narrow klass range: 0x100000000
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit] Heap
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]  garbage-first heap   total 1048576K, used 7217K [0x00000000c0000000, 0x0000000100000000)
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]   region size 1024K, 5 young (5120K), 0 survivors (0K)
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]  Metaspace       used 561K, committed 704K, reserved 1114112K
[2025-06-23T17:10:33.792+0000][2927][gc,heap,exit]   class space    used 46K, committed 128K, reserved 1048576K
Enter fullscreen mode Exit fullscreen mode 
[2025-06-23T17:10:32.188+0000][2927][gc,init] CardTable entry size: 512
[2025-06-23T17:10:32.190+0000][2927][gc     ] Using G1
[2025-06-23T17:10:33.013+0000][2927][gc,init] Version: 21.0.7+6-Ubuntu-0ubuntu120.04 (release)
[2025-06-23T17:10:33.013+0000][2927][gc,init] CPUs: 4 total, 4 available
[2025-06-23T17:10:33.013+0000][2927][gc,init] Memory: 8700M
[2025-06-23T17:10:33.013+0000][2927][gc,init] Large Page Support: Disabled
[2025-06-23T17:10:33.013+0000][2927][gc,init] NUMA Support: Disabled
[2025-06-23T17:10:33.013+0000][2927][gc,init] Compressed Oops: Enabled (32-bit)
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Region Size: 1M
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Min Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Initial Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Max Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Pre-touch: Enabled
[2025-06-23T17:10:33.014+0000][2927][gc,init] Parallel Workers: 4
[2025-06-23T17:10:33.014+0000][2927][gc,init] Concurrent Workers: 1
[2025-06-23T17:10:33.014+0000][2927][gc,init] Concurrent Refinement Workers: 4
[2025-06-23T17:10:33.014+0000][2927][gc,init] Periodic GC: Disabled
[2025-06-23T17:10:33.223+0000][2927][gc,metaspace] CDS archive(s) mapped at: [0x00007f5a33000000-0x00007f5a33c97000-0x00007f5a33c97000), size 13201408, SharedBaseAddress: 0x00007f5a33000000, ArchiveRelocationMode: 1.
[2025-06-23T17:10:33.224+0000][2927][gc,metaspace] Compressed class space mapped at: 0x00007f5a34000000-0x00007f5a74000000, reserved size: 1073741824
[2025-06-23T17:10:33.224+0000][2927][gc,metaspace] Narrow klass base: 0x00007f5a33000000, Narrow klass shift: 0, Narrow klass range: 0x100000000
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit] Heap
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]  garbage-first heap   total 1048576K, used 7217K [0x00000000c0000000, 0x0000000100000000)
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]   region size 1024K, 5 young (5120K), 0 survivors (0K)
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]  Metaspace       used 561K, committed 704K, reserved 1114112K
[2025-06-23T17:10:33.792+0000][2927][gc,heap,exit]   class space    used 46K, committed 128K, reserved 1048576K
Enter fullscreen mode Exit fullscreen mode 
[2025-06-23T17:10:32.188+0000][2927][gc,init] CardTable entry size: 512
[2025-06-23T17:10:32.190+0000][2927][gc     ] Using G1
[2025-06-23T17:10:33.013+0000][2927][gc,init] Version: 21.0.7+6-Ubuntu-0ubuntu120.04 (release)
[2025-06-23T17:10:33.013+0000][2927][gc,init] CPUs: 4 total, 4 available
[2025-06-23T17:10:33.013+0000][2927][gc,init] Memory: 8700M
[2025-06-23T17:10:33.013+0000][2927][gc,init] Large Page Support: Disabled
[2025-06-23T17:10:33.013+0000][2927][gc,init] NUMA Support: Disabled
[2025-06-23T17:10:33.013+0000][2927][gc,init] Compressed Oops: Enabled (32-bit)
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Region Size: 1M
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Min Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Initial Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Max Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Pre-touch: Enabled
[2025-06-23T17:10:33.014+0000][2927][gc,init] Parallel Workers: 4
[2025-06-23T17:10:33.014+0000][2927][gc,init] Concurrent Workers: 1
[2025-06-23T17:10:33.014+0000][2927][gc,init] Concurrent Refinement Workers: 4
[2025-06-23T17:10:33.014+0000][2927][gc,init] Periodic GC: Disabled
[2025-06-23T17:10:33.223+0000][2927][gc,metaspace] CDS archive(s) mapped at: [0x00007f5a33000000-0x00007f5a33c97000-0x00007f5a33c97000), size 13201408, SharedBaseAddress: 0x00007f5a33000000, ArchiveRelocationMode: 1.
[2025-06-23T17:10:33.224+0000][2927][gc,metaspace] Compressed class space mapped at: 0x00007f5a34000000-0x00007f5a74000000, reserved size: 1073741824
[2025-06-23T17:10:33.224+0000][2927][gc,metaspace] Narrow klass base: 0x00007f5a33000000, Narrow klass shift: 0, Narrow klass range: 0x100000000
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit] Heap
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]  garbage-first heap   total 1048576K, used 7217K [0x00000000c0000000, 0x0000000100000000)
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]   region size 1024K, 5 young (5120K), 0 survivors (0K)
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]  Metaspace       used 561K, committed 704K, reserved 1114112K
[2025-06-23T17:10:33.792+0000][2927][gc,heap,exit]   class space    used 46K, committed 128K, reserved 1048576K
Enter fullscreen mode Exit fullscreen mode 
[2025-06-23T17:10:32.188+0000][2927][gc,init] CardTable entry size: 512
[2025-06-23T17:10:32.190+0000][2927][gc     ] Using G1
[2025-06-23T17:10:33.013+0000][2927][gc,init] Version: 21.0.7+6-Ubuntu-0ubuntu120.04 (release)
[2025-06-23T17:10:33.013+0000][2927][gc,init] CPUs: 4 total, 4 available
[2025-06-23T17:10:33.013+0000][2927][gc,init] Memory: 8700M
[2025-06-23T17:10:33.013+0000][2927][gc,init] Large Page Support: Disabled
[2025-06-23T17:10:33.013+0000][2927][gc,init] NUMA Support: Disabled
[2025-06-23T17:10:33.013+0000][2927][gc,init] Compressed Oops: Enabled (32-bit)
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Region Size: 1M
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Min Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Initial Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Max Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Pre-touch: Enabled
[2025-06-23T17:10:33.014+0000][2927][gc,init] Parallel Workers: 4
[2025-06-23T17:10:33.014+0000][2927][gc,init] Concurrent Workers: 1
[2025-06-23T17:10:33.014+0000][2927][gc,init] Concurrent Refinement Workers: 4
[2025-06-23T17:10:33.014+0000][2927][gc,init] Periodic GC: Disabled
[2025-06-23T17:10:33.223+0000][2927][gc,metaspace] CDS archive(s) mapped at: [0x00007f5a33000000-0x00007f5a33c97000-0x00007f5a33c97000), size 13201408, SharedBaseAddress: 0x00007f5a33000000, ArchiveRelocationMode: 1.
[2025-06-23T17:10:33.224+0000][2927][gc,metaspace] Compressed class space mapped at: 0x00007f5a34000000-0x00007f5a74000000, reserved size: 1073741824
[2025-06-23T17:10:33.224+0000][2927][gc,metaspace] Narrow klass base: 0x00007f5a33000000, Narrow klass shift: 0, Narrow klass range: 0x100000000
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit] Heap
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]  garbage-first heap   total 1048576K, used 7217K [0x00000000c0000000, 0x0000000100000000)
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]   region size 1024K, 5 young (5120K), 0 survivors (0K)
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]  Metaspace       used 561K, committed 704K, reserved 1114112K
[2025-06-23T17:10:33.792+0000][2927][gc,heap,exit]   class space    used 46K, committed 128K, reserved 1048576K
Enter fullscreen mode Exit fullscreen mode 
[2025-06-23T17:10:32.188+0000][2927][gc,init] CardTable entry size: 512
[2025-06-23T17:10:32.190+0000][2927][gc     ] Using G1
[2025-06-23T17:10:33.013+0000][2927][gc,init] Version: 21.0.7+6-Ubuntu-0ubuntu120.04 (release)
[2025-06-23T17:10:33.013+0000][2927][gc,init] CPUs: 4 total, 4 available
[2025-06-23T17:10:33.013+0000][2927][gc,init] Memory: 8700M
[2025-06-23T17:10:33.013+0000][2927][gc,init] Large Page Support: Disabled
[2025-06-23T17:10:33.013+0000][2927][gc,init] NUMA Support: Disabled
[2025-06-23T17:10:33.013+0000][2927][gc,init] Compressed Oops: Enabled (32-bit)
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Region Size: 1M
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Min Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Initial Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Heap Max Capacity: 1G
[2025-06-23T17:10:33.013+0000][2927][gc,init] Pre-touch: Enabled
[2025-06-23T17:10:33.014+0000][2927][gc,init] Parallel Workers: 4
[2025-06-23T17:10:33.014+0000][2927][gc,init] Concurrent Workers: 1
[2025-06-23T17:10:33.014+0000][2927][gc,init] Concurrent Refinement Workers: 4
[2025-06-23T17:10:33.014+0000][2927][gc,init] Periodic GC: Disabled
[2025-06-23T17:10:33.223+0000][2927][gc,metaspace] CDS archive(s) mapped at: [0x00007f5a33000000-0x00007f5a33c97000-0x00007f5a33c97000), size 13201408, SharedBaseAddress: 0x00007f5a33000000, ArchiveRelocationMode: 1.
[2025-06-23T17:10:33.224+0000][2927][gc,metaspace] Compressed class space mapped at: 0x00007f5a34000000-0x00007f5a74000000, reserved size: 1073741824
[2025-06-23T17:10:33.224+0000][2927][gc,metaspace] Narrow klass base: 0x00007f5a33000000, Narrow klass shift: 0, Narrow klass range: 0x100000000
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit] Heap
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]  garbage-first heap   total 1048576K, used 7217K [0x00000000c0000000, 0x0000000100000000)
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]   region size 1024K, 5 young (5120K), 0 survivors (0K)
[2025-06-23T17:10:33.791+0000][2927][gc,heap,exit]  Metaspace       used 561K, committed 704K, reserved 1114112K
[2025-06-23T17:10:33.792+0000][2927][gc,heap,exit]   class space    used 46K, committed 128K, reserved 1048576K
Enter fullscreen mode Exit fullscreen mode

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