The latest articles on Forem by urdevops (@urdevops24). https://forem.com/urdevops24 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F2500027%2F5c5a59af-2582-4ab3-b2d6-3ecfc2892d6c.jpg https://forem.com/urdevops24 en urdevops Mon, 23 Jun 2025 17:45:32 +0000 https://forem.com/urdevops24/elk-stack-graylog-2de https://forem.com/urdevops24/elk-stack-graylog-2de <p>I faced a nasty ELK &amp; Graylog issue today.</p> <p>I am working an internship project.</p> <p>The first installation tutorial I tried was in conjuction with the Filebeat.</p> <p><a href="https://docs.vultr.com/install-elastic-stack-on-ubuntu-20-04" rel="noopener noreferrer">https://docs.vultr.com/install-elastic-stack-on-ubuntu-20-04</a></p> <p>But the project is designed with Elk stack &amp; Graylog.</p> <p>Recently I tried this article but still no success.</p> <p><a href="https://docs.vultr.com/how-to-install-graylog-on-ubuntu-20-04#prerequisites" rel="noopener noreferrer">https://docs.vultr.com/how-to-install-graylog-on-ubuntu-20-04#prerequisites</a></p> <p>I tried different solutions from deleting everything related elk stack but still ElasticSearch is not starting. </p> <p>I am stuck kindly help.</p> <p>Here are the details....</p> <p>systemd details:</p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fk47uoe7opq5upvvlpdxw.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fk47uoe7opq5upvvlpdxw.png" alt="systemd details" width="800" height="224"></a></p> <p>journalctl -u elasticsearch.service | less</p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F9zxe30z0y8j6t4a8b0yk.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F9zxe30z0y8j6t4a8b0yk.png" alt="journalctl details" width="800" height="455"></a></p> <p>elasticsearch log files<br> </p> <div class="highlight js-code-highlight"> <pre class="highlight plaintext"><code>[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 </code></pre> </div> <div class="highlight js-code-highlight"> <pre class="highlight plaintext"><code>[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 </code></pre> </div> <div class="highlight js-code-highlight"> <pre class="highlight plaintext"><code>[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 </code></pre> </div> <div class="highlight js-code-highlight"> <pre class="highlight plaintext"><code>[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 </code></pre> </div> <div class="highlight js-code-highlight"> <pre class="highlight plaintext"><code>[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 </code></pre> </div> beginners devops sysadmin ai urdevops Fri, 13 Dec 2024 21:00:22 +0000 https://forem.com/urdevops24/-3b7j https://forem.com/urdevops24/-3b7j <div class="ltag__link"> <a href="/urdevops24" class="ltag__link__link"> <div class="ltag__link__pic"> <img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F2500027%2F5c5a59af-2582-4ab3-b2d6-3ecfc2892d6c.jpg" alt="urdevops24"> </div> </a> <a href="/urdevops24/learning-devops-projects-from-beginner-to-advance-59ld" class="ltag__link__link"> <div class="ltag__link__content"> <h2>Learning Devops projects from beginner to advance.</h2> <h3>urdevops ・ Dec 13</h3> <div class="ltag__link__taglist"> <span class="ltag__link__tag">#devops</span> <span class="ltag__link__tag">#beginners</span> <span class="ltag__link__tag">#automation</span> <span class="ltag__link__tag">#bash</span> </div> </div> </a> </div> urdevops Fri, 13 Dec 2024 20:59:47 +0000 https://forem.com/urdevops24/learning-devops-projects-from-beginner-to-advance-59ld https://forem.com/urdevops24/learning-devops-projects-from-beginner-to-advance-59ld <p>Hi, I am self-learning devops for about a year now. This is a series of posts about devops-related projects from beginner to advanced for devops skill development.</p> <p>I will also share some deep insights about devops and cloud computing.</p> <p>Feel free to share your comments and insights.</p> <p>Thanks.</p> devops beginners automation bash