{"id":174,"date":"2006-02-08T18:21:24","date_gmt":"2006-02-08T17:21:24","guid":{"rendered":"http:\/\/kudzia.eu\/b\/?p=174"},"modified":"2011-04-30T10:22:44","modified_gmt":"2011-04-30T09:22:44","slug":"heartbeat-cluster","status":"publish","type":"post","link":"https:\/\/kudzia.eu\/b\/2006\/02\/heartbeat-cluster\/","title":{"rendered":"heartbeat cluster"},"content":{"rendered":"<p>at work: how one can screw up <a href=\"http:\/\/www.linux-ha.org\">heartbeat cluster<\/a>?<\/p>\n<p><!--more--><\/p>\n<p>in many ways&#8230; first by mistyping configuration so both nodes think they are preferred masters. then.. by cross-connecting power cables from <a href=\"http:\/\/www.baytechdcd.com\/products\/rpcseries.shtml\">remote power control<\/a> to nodes of the cluster in the way that slave kills itself instead of killing master. grate&#8230; what else? at least it was not my fault&#8230; by installing 3ware monitoring software for raid arrays&#8230; s<br \/>\noftware that tends to hang whole machine in some very special configuration [ 3 degraded raid1 arrays.. ]. and all of this to achieve higher availability&#8230; i want to believe..<\/p>\n<p>all of this was happening during last Friday afternoon that become Saturday&#8217;s early morning spent in a datacenter so<br \/>\nmewhere out of the town. and it was a lot of fun besides&#8230; taking walk home at 2.oo am for ~10km was not that smart after all. but it was not enough for me. i&#8217;ve just bought a proper [hopefully] bike and bad<br \/>\nly needed to get a test drive. so i took it&#8230; 20 km around the city in -8 degrees. not smart&#8230; at all. so both should explain why i feel sick for last few days.<\/p>\n<p>at home i&#8217;ve finished customizing small thigny for <a href=\"http:\/\/techgsm.com\/\">techgsm<\/a> &#8211; bulk orders based on quite nice dhtml. <\/p>\n<p>and besides all of those company has just supplied me a housemate for next 8 months. so far so good, we use IM on daily basis to communicate. not much domestic violence so far ;-]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>at work: how one can screw up heartbeat cluster?<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,17],"tags":[],"class_list":["post-174","post","type-post","status-publish","format-standard","hentry","category-non-tech","category-tech"],"_links":{"self":[{"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/posts\/174","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/comments?post=174"}],"version-history":[{"count":3,"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/posts\/174\/revisions"}],"predecessor-version":[{"id":620,"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/posts\/174\/revisions\/620"}],"wp:attachment":[{"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/media?parent=174"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/categories?post=174"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/tags?post=174"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}