{"id":1664,"date":"2014-01-30T13:36:40","date_gmt":"2014-01-30T20:36:40","guid":{"rendered":"http:\/\/xiehang.com\/blog\/?p=1664"},"modified":"2014-03-20T07:01:15","modified_gmt":"2014-03-20T14:01:15","slug":"its-the-cable-problem-d","status":"publish","type":"post","link":"https:\/\/xiehang.com\/blog\/2014\/01\/30\/its-the-cable-problem-d\/","title":{"rendered":"It&#8217;s the cable problem, D***!"},"content":{"rendered":"<p>I had two servers that always run at 100Mbps, which was OK but whenever I turned them to GlusterFS bricks, things became obviously not working.<\/p>\n<p>It sounds like simple, right? Yea, I tried ethtool to force them running on GigE, didn&#8217;t work; I tried to change to another switch port, didn&#8217;t work &#8230; after blocking myself from the servers for several times (ethtool!), I finally decided to change to use 2nd NIC on those two servers. They were good, running at GigE immediately after plugging into the switch.<!--more--><\/p>\n<p>Then today, I was thinking of doing cabling in the server room, since those 1st NIC still have cables on them, I decided to move those cables to the 2nd NICs which means I don&#8217;t have to change notes on switch ports. Well, interesting things happened &#8211; those two port run at 100Mbps again &#8230;<\/p>\n<p>Well, everyone knows where the problem now, right? I swapped out those two cables and everything looks perfect, I think I will switch back to 1st NIC later on but that&#8217;s not a big deal.<\/p>\n<p>I hate cables.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I had two servers that always run at 100Mbps, which was OK but whenever I turned them to GlusterFS bricks, things became obviously not working. It sounds like simple, right? Yea, I tried ethtool to force them running on GigE, didn&#8217;t work; I tried to change to another switch port, didn&#8217;t work &#8230; after blocking <a href='https:\/\/xiehang.com\/blog\/2014\/01\/30\/its-the-cable-problem-d\/' class='excerpt-more'>[&#8230;]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[476,472,473,474,475],"_links":{"self":[{"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/posts\/1664"}],"collection":[{"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/comments?post=1664"}],"version-history":[{"count":2,"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/posts\/1664\/revisions"}],"predecessor-version":[{"id":1682,"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/posts\/1664\/revisions\/1682"}],"wp:attachment":[{"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/media?parent=1664"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/categories?post=1664"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/tags?post=1664"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}