{"id":1022,"date":"2011-09-17T14:17:32","date_gmt":"2011-09-17T18:17:32","guid":{"rendered":"http:\/\/antipaucity.com\/?p=1022"},"modified":"2011-09-17T14:17:32","modified_gmt":"2011-09-17T18:17:32","slug":"ogshogfs-for-fun-and-profit","status":"publish","type":"post","link":"https:\/\/merikebi.warrenmyers.com\/?p=1022","title":{"rendered":"ogsh\/ogfs for fun and profit"},"content":{"rendered":"

The absolute coolest feature of HP’s Server Automation suite is the OGSH (or OGFS) – the Opsware Global SHell (or FileSystem).<\/p>\n

I worked for Opsware before HP acquired them, and the OGSH was a new feature to the product (then called Opsware SAS (Server Automation System)). It’s a fuse<\/a>\u00a0module that gives a [limited] bash interface to the managed environment by presenting a live query\/view into the database, and, ultimately, allowing manipulation of managed servers in the environment.<\/p>\n

For example, to access a list of all managed servers, you login to global shell, then<\/p>\n

cd \/opsw\/Server\/@<\/code><\/p><\/blockquote>\n

The ‘@’ sign is used to indicate you are “there” – at the limit of that particular filter (in this case, “Server”).<\/p>\n

Since it’s bash, you can run most common *nix utilities and commands. But the one that’s most handy, in my opinion, is rosh<\/code> – the Remote Opsware SHell.<\/p>\n

Remote shell opens an authenticated, logged session to a remote machine (*nix or Windows – doesn’t matter), based on your user’s\/group’s permissions. For testing purposes, I always configure one group (and add myself) that can connect using root<\/code> for *nix machines (and Administrator on Windows).<\/p>\n

The basic command to connect to a machine is:<\/p>\n

rosh -l [username] -n [machine]<\/code><\/p><\/blockquote>\n

You can also pass commands to rosh<\/code> like it was an ssh session:<\/p>\n

rosh -l [username] -n [machine] '[command]'<\/code><\/p><\/blockquote>\n

For the fullest power of rosh<\/code>, though, use it in a script or loop. For example:<\/p>\n

for sn in *; do rosh -l root -n $sn 'uptime ; uname -a'; done<\/code><\/p><\/blockquote>\n

That will remote shell into every server in the current view, using standard shell expansion of the splat (*), and run uptime<\/code> and uname -a<\/code>, printing the results to screen. That particular command is handy for quick-and-dirty reports on the managed environment to see<\/p>\n