{"id":76,"date":"2024-06-04T10:55:21","date_gmt":"2024-06-04T08:55:21","guid":{"rendered":"https:\/\/www.sysadmins.nl\/?page_id=76"},"modified":"2025-11-06T22:52:01","modified_gmt":"2025-11-06T21:52:01","slug":"about-me","status":"publish","type":"page","link":"https:\/\/www.sysadmins.nl\/index.php\/about-me\/","title":{"rendered":"About me"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">I&#8217;m Raimond, an open source consultant\/teammanager with a focus on Observability.<\/p>\n\n\n<div class=\"wp-block-image is-style-rounded\">\n<figure class=\"alignleft size-thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/06\/raimond.kollman-150x150.jpeg\" alt=\"\" class=\"wp-image-78\" srcset=\"https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/06\/raimond.kollman-150x150.jpeg 150w, https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/06\/raimond.kollman-300x300.jpeg 300w, https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/06\/raimond.kollman-768x768.jpeg 768w, https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/06\/raimond.kollman.jpeg 1000w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">I&#8217;ve spent 25+ years working across different areas on using and implementing open source. At first the focus was on system administration (using Solaris\/Tru64 Unix combined with Linux) and during the years that shifted to primarily Linux based systems.<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After more than a decade of coaching (100+) open source consultants in developing their social and technical skills in open source consulting, I decided that I missed doing &#8220;technical things&#8221; myself.<br><br>So since 2022 I changed jobs and became a consultant again. Now my focus is on managing open source teams as a technical team lead. My preferred assignments are those where observability (or sometimes only monitoring) is the main purpose.<br><br>At this moment (2025) my preferrable tool for gaining more insights and control (observability) on the IT environment is <a href=\"https:\/\/www.zabbix.com\">Zabbix<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quests, projects, things I try for getting better at Observability (and more primarily Zabbix) will be written  by me on this site. I hope you&#8217;ll enjoy this and my writings will help you on your &#8220;quests&#8221;.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"179\" src=\"https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/10\/certified_specialist_7_0_certificate-1024x1024.png\" alt=\"\" class=\"wp-image-179\" srcset=\"https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/10\/certified_specialist_7_0_certificate-1024x1024.png 1024w, https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/10\/certified_specialist_7_0_certificate-300x300.png 300w, https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/10\/certified_specialist_7_0_certificate-150x150.png 150w, https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/10\/certified_specialist_7_0_certificate-768x768.png 768w, https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/10\/certified_specialist_7_0_certificate.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Zabbix 7.0 Certified Specialist<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" data-id=\"180\" src=\"https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/10\/certified_professional_7_0_certificate-1024x1024.png\" alt=\"\" class=\"wp-image-180\" srcset=\"https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/10\/certified_professional_7_0_certificate-1024x1024.png 1024w, https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/10\/certified_professional_7_0_certificate-300x300.png 300w, https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/10\/certified_professional_7_0_certificate-150x150.png 150w, https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/10\/certified_professional_7_0_certificate-768x768.png 768w, https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2024\/10\/certified_professional_7_0_certificate.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Zabbix 7.0 Certified Professional<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"552\" height=\"570\" data-id=\"267\" src=\"https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2025\/11\/ZCE-7.0.png\" alt=\"Zabbix 7.0 Certified Expert\" class=\"wp-image-267\" srcset=\"https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2025\/11\/ZCE-7.0.png 552w, https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2025\/11\/ZCE-7.0-291x300.png 291w\" sizes=\"auto, (max-width: 552px) 100vw, 552px\" \/><figcaption class=\"wp-element-caption\">Zabbix 7.0 Certified Expert<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"554\" height=\"586\" data-id=\"262\" src=\"https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2025\/11\/ZCT-7.0.png\" alt=\"\" class=\"wp-image-262\" srcset=\"https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2025\/11\/ZCT-7.0.png 554w, https:\/\/www.sysadmins.nl\/wp-content\/uploads\/2025\/11\/ZCT-7.0-284x300.png 284w\" sizes=\"auto, (max-width: 554px) 100vw, 554px\" \/><figcaption class=\"wp-element-caption\">Zabbix 7.0 Certified Trainer<\/figcaption><\/figure>\n<\/figure>\n\n\n\n<div data-iframe-width=\"150\" data-iframe-height=\"270\" data-share-badge-id=\"4e713cda-a10a-4306-880b-1d169df476d9\" data-share-badge-host=\"https:\/\/www.credly.com\"><\/div><script type=\"text\/javascript\" async src=\"\/\/cdn.credly.com\/assets\/utilities\/embed.js\"><\/script>\/\n\n\n\n<div data-iframe-width=\"150\" data-iframe-height=\"270\" data-share-badge-id=\"71b9dc2a-49b6-485c-a314-ccd4db5d3b59\" data-share-badge-host=\"https:\/\/www.credly.com\"><\/div><script type=\"text\/javascript\" async src=\"\/\/cdn.credly.com\/assets\/utilities\/embed.js\"><\/script>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;m Raimond, an open source consultant\/teammanager with a focus on Observability. I&#8217;ve spent 25+ years working across different areas on using and implementing open source. At first the focus was on system administration (using Solaris\/Tru64 Unix combined with Linux) and during the years that shifted to primarily Linux based systems. After more than a decade [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-76","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.sysadmins.nl\/index.php\/wp-json\/wp\/v2\/pages\/76","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sysadmins.nl\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.sysadmins.nl\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.sysadmins.nl\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sysadmins.nl\/index.php\/wp-json\/wp\/v2\/comments?post=76"}],"version-history":[{"count":12,"href":"https:\/\/www.sysadmins.nl\/index.php\/wp-json\/wp\/v2\/pages\/76\/revisions"}],"predecessor-version":[{"id":269,"href":"https:\/\/www.sysadmins.nl\/index.php\/wp-json\/wp\/v2\/pages\/76\/revisions\/269"}],"wp:attachment":[{"href":"https:\/\/www.sysadmins.nl\/index.php\/wp-json\/wp\/v2\/media?parent=76"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}