Beware that since latest Ubuntu kernel upgrades (14.04.02), you may lose network rebooting your servers!<\/p>\n
I’ve had the problem four\u00a0days ago, rebooting one of my OpenNebula hosts. Still unreachable after 5 minutes, I logged in physically, to see all my “p1pX” and “p4pX” interfaces had disappeared.
\nChecking udev rules, there is now a file fixing interfaces mapping.\u00a0On\u00a0a server I have not rebooted yet, this file doesn’t exist.<\/p>\n
The story could have ended here. But with Ubuntu, updates is a daily struggle: today, one of my ceph OSD (hosting 4 disks) spontaneously stopped working.
\nMeaning: the host was still there, I was able to open a shell using SSH. Checking processes, all ceph osd deamon were stopped. Starting them showed no error, while processes were still absent. Checking dmesg, I had\u00a0several lines of SSL-related segfaults.
\nAs expected, rebooting fixed everything, from ceph, to my network interfaces names.
\nIt’s in these days I most enjoy freelancing: I can address my system and network outages in time, way before it’s too late.<\/p>\n
While I was starting to accept Ubuntu as safe enough to run production services, renaming interfaces on a production system is unacceptable. I’m curious to\u00a0know how Canonical dealt with that providing BootStack and OpenStack-based services.<\/p>\n
Note there is still a way to prevent your interfaces from being renamed:<\/p>\n
Beware that since latest Ubuntu kernel upgrades (14.04.02), you may lose network rebooting your servers! I’ve had the problem four\u00a0days ago, rebooting one of my OpenNebula hosts. Still unreachable after 5 minutes, I logged in physically, to see all my “p1pX” and “p4pX” interfaces had disappeared. Checking udev rules, there is now a file fixing […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5,9,4,2],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.unetresgrossebite.com\/index.php?rest_route=\/wp\/v2\/posts\/155"}],"collection":[{"href":"https:\/\/blog.unetresgrossebite.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.unetresgrossebite.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.unetresgrossebite.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.unetresgrossebite.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=155"}],"version-history":[{"count":4,"href":"https:\/\/blog.unetresgrossebite.com\/index.php?rest_route=\/wp\/v2\/posts\/155\/revisions"}],"predecessor-version":[{"id":161,"href":"https:\/\/blog.unetresgrossebite.com\/index.php?rest_route=\/wp\/v2\/posts\/155\/revisions\/161"}],"wp:attachment":[{"href":"https:\/\/blog.unetresgrossebite.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.unetresgrossebite.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=155"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.unetresgrossebite.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}# ln -s \/dev\/null \/etc\/udev\/rules.d\/75-persistent-net-generator.rules<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"