{"id":339,"date":"2014-10-29T18:50:21","date_gmt":"2014-10-29T18:50:21","guid":{"rendered":"http:\/\/installingcats.com\/?p=339"},"modified":"2014-10-29T18:50:21","modified_gmt":"2014-10-29T18:50:21","slug":"linux-do-release-upgrade-checklist-broken-pipe","status":"publish","type":"post","link":"https:\/\/installingcats.com\/2014\/10\/29\/linux-do-release-upgrade-checklist-broken-pipe\/","title":{"rendered":"Linux do-release-upgrade Checklist Recover from Broken Pipe"},"content":{"rendered":"<p>Before a do-release-upgrade in Ubuntu Linux, here&#8217;s a quick checklist of todo&#8217;s:<\/p>\n<ul>\n<li>Backup important files (apache sites \/ log files \/ conf files, PHP .ini files, databases, cron scripts, .bash_aliases, .profile, upstart scripts)<\/li>\n<li>Clear up enough space for upgrading (usually around 1GB)<\/li>\n<li>Open up a secondary SSH window and alternate port for firewall\u00a0if you get disconnected a lot<\/li>\n<li>Change access to \/var\/run\/screen to 777 (chmod 777 \/var\/run\/screen)<\/li>\n<li>about 2-3 hours of time to upgrade (started 5:14pm, broken pipe around 7:35pm, restart 8:10pm)<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>The Linux server will continue to run while upgrade is downloading necessary packages.<\/p>\n<p>First question will be: Disable SSH password authentication for root? \u00a0If you&#8217;re using public\/private key logins for SSH, go ahead and disable interactive typed password authentication for SSH. \u00a0This is safer.<\/p>\n<p>Second question: Restart services during package upgrade without asking? \u00a0Sure. \u00a0Unless you like to watch terminal windows for unknown lengths of time and clicking Yes over and over again.<\/p>\n<p>Next the Linux server will download, unpack, and update packages, restart services as necessary, one-by-one until all Linux packages are at the latest version available.<\/p>\n<p>You may be asked to replace some configuration files such as \/etc\/default\/rcS. \u00a0Since I have no recollection of changing that in paritcular, I&#8217;ll go with replacing it with the package maintainer (new) version. \u00a0(The only change was to assume BIOS clock is\u00a0set to\u00a0time based on UTC). \u00a0In other cases, such as jail.conf for fail2ban, I&#8217;d keep my own configuration file, since it&#8217;s full of my customizations to jails that I&#8217;d much prefer to keep.<\/p>\n<p>For \/boot\/grub\/menu.lst, I chose to &#8220;Install the Package Maintainer&#8217;s version&#8221; to replace my version with the new version. \u00a0Nothing exploded. \u00a0Or melted.<\/p>\n<h2>Recover from Broken Pipe during do-release-upgrade<\/h2>\n<p>During the ultra-long upgrade process you\u00a0may\u00a0get a Broken Pipe due to spotty Internet connection or accidentally closing your Terminal connection. \u00a0At the beginning of the process do-release-upgrade noted an alternate SSH port where you can reconnect (usually port 1022). \u00a0To reconnect to the active screen (here&#8217;s where the chmod 777 \/var\/run\/screen comes in handy) first change the \/var\/run\/screen permissions to 775 (chmod 775 \/var\/run\/screen), then reconnect by\u00a0executing the command <strong>screen -d -r<\/strong>. \u00a0This will reconnect you to the running upgrade.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Before a do-release-upgrade in Ubuntu Linux, here&#8217;s a quick checklist of todo&#8217;s: Backup important files (apache sites \/ log files \/ conf files, PHP .ini files, databases, cron scripts, .bash_aliases, .profile, upstart scripts) Clear up enough space for upgrading (usually around 1GB) Open up a secondary SSH window and alternate port for firewall\u00a0if you get [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[229],"_links":{"self":[{"href":"https:\/\/installingcats.com\/wp-json\/wp\/v2\/posts\/339"}],"collection":[{"href":"https:\/\/installingcats.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/installingcats.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/installingcats.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/installingcats.com\/wp-json\/wp\/v2\/comments?post=339"}],"version-history":[{"count":0,"href":"https:\/\/installingcats.com\/wp-json\/wp\/v2\/posts\/339\/revisions"}],"wp:attachment":[{"href":"https:\/\/installingcats.com\/wp-json\/wp\/v2\/media?parent=339"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/installingcats.com\/wp-json\/wp\/v2\/categories?post=339"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/installingcats.com\/wp-json\/wp\/v2\/tags?post=339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}