{"id":621,"date":"2022-03-01T01:02:32","date_gmt":"2022-03-01T01:02:32","guid":{"rendered":"https:\/\/www.darmain.co.uk\/darmainworld\/?p=621"},"modified":"2022-03-01T01:12:20","modified_gmt":"2022-03-01T01:12:20","slug":"migration-once-more","status":"publish","type":"post","link":"https:\/\/www.darmain.co.uk\/darmainworld\/index.php\/2022\/03\/01\/migration-once-more\/","title":{"rendered":"Migration once more"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">You might notice this site is a little slow.  There is, of course, a reason.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Stupidly high fuel bills.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It has come to pass that Gas and Electricity prices have literally gone through the roof and I am expecting my bill to more than double.  Under these circumstances I cannot justify the operation of my 300 watt, &#8220;JARVIS 1&#8221; enterprise class server, running 24 hours a day.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Yet so much work will be lost without it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So, my file server, network management, and weather station functions have been migrated to a &#8220;Raspberry Pi &#8211; Version 3B&#8221;.  Attached to this is two, 1GB USB 3.0 portable hard drives.  This machine is called &#8220;JARVIS_RPI_SERVER&#8221;.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">All website functions have been moved to a second &#8220;Raspberry Pi &#8211; Version 3B&#8221;, this time with a single 500Mb USB 3.0 hard drive.  This machine is &#8220;WEBSERVER_RPI&#8221;.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Both RPIs are running Ubuntu 20.04, which is exactly what &#8220;JARVIS 1&#8221; runs.  However we are scaling back from a 3 GHz, 24 logical core processor, with 64 GB of RAM and 3.8 TB of disk space on 8 x 600 GB, SAS drives in RAID 5.  To a 1.2 GHz, quad core ARM, with 1GB of RAM. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Preparation for this has been over several days.  Migrating the WordPress sites took the most effort.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But this evening the websites were running on the new platform and just the small job of moving the weather station system over remained.  And so it was done.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">And then, with some sadness, I sat in front of the console to &#8220;JARVIS 1&#8221; and issued the command &#8211;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">>sudo shutdown -P now<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A few seconds later the gentle humming of the machine died away, leaving silence.  The dual UPS units were then powered down also.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sleep well big beast, your time will come again.  <\/p>\n","protected":false},"excerpt":{"rendered":"<p>You might notice this site is a little slow. There is, of course, a reason. Stupidly high fuel bills. It has come to pass that Gas and Electricity prices have literally gone through the roof and I am expecting my bill to more than double. Under these circumstances I cannot justify the operation of my [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":622,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-621","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-websitedesign"],"_links":{"self":[{"href":"https:\/\/www.darmain.co.uk\/darmainworld\/index.php\/wp-json\/wp\/v2\/posts\/621","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.darmain.co.uk\/darmainworld\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.darmain.co.uk\/darmainworld\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.darmain.co.uk\/darmainworld\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.darmain.co.uk\/darmainworld\/index.php\/wp-json\/wp\/v2\/comments?post=621"}],"version-history":[{"count":2,"href":"https:\/\/www.darmain.co.uk\/darmainworld\/index.php\/wp-json\/wp\/v2\/posts\/621\/revisions"}],"predecessor-version":[{"id":625,"href":"https:\/\/www.darmain.co.uk\/darmainworld\/index.php\/wp-json\/wp\/v2\/posts\/621\/revisions\/625"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.darmain.co.uk\/darmainworld\/index.php\/wp-json\/wp\/v2\/media\/622"}],"wp:attachment":[{"href":"https:\/\/www.darmain.co.uk\/darmainworld\/index.php\/wp-json\/wp\/v2\/media?parent=621"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.darmain.co.uk\/darmainworld\/index.php\/wp-json\/wp\/v2\/categories?post=621"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.darmain.co.uk\/darmainworld\/index.php\/wp-json\/wp\/v2\/tags?post=621"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}