Hi Randal,
the task is being executed on each host you put in -H, that’s why the
backup is done 3 times. In order to avoid this, I think the easiest way is
to use execute(). (BTW, I’m not really sure what are you doing in backup)
def backup_and_upload():
execute(backup)
execute(upload, hosts=['server1',''server2', 'server3'])
def upload():
conf_files = current_dir + 'abc.conf'
remote_conf_dir = '/etc/abc/'
put(conf_files, remote_conf_dir, use_sudo=True)
print(green("Upload complete"))
You can run this locally (fab backup_and_upload -H localhost), as execute()
will connect to hosts to perform the task.
This will work, but maybe later you will need to add more servers. In that
case, you can use parameters or try a more dynamic approach. Read this, is
a must! http://docs.fabfile.org/en/1.12/usage/execution.html
Regards
2016-12-14 17:34 GMT+01:00 Randal Ray <[email protected]>:
Hi everyone,
>
> I've recently started using Fabric. I have multiple 3 web servers. The
> specification of SSH options such as HostName and User are saved in
> $HOME/.ssh/config, which looks like this:
>
> Host server1
> HostName 54.xxx.yyy.zzz
> User ubuntu
>
> Host server2
> HostName 54.aaa.bbb.ccc
> User ubuntu
>
> Host server3
> HostName 54.ddd.eee.fff
> User ubuntu
>
> Now I would like to update a file on each of these 3 servers (the content
> of these files are the same) with a local file.
>
> My fabfile looks like this:
>
> env.use_ssh_config = True
>
> def upload():
> execute(backup)
> conf_files = current_dir + 'abc.conf'
> remote_conf_dir = '/etc/abc/'
> put(conf_files, remote_conf_dir, use_sudo=True)
> print(green("Upload complete"))
>
> When I run `fab -H server1, server2, server3 upload`, this script will
> backup the file three times.
>
> Because the content of these 3 files are the same, I want to backup just
> one copy of the file on my local machine at first, then update all 3 of
> them.
>
> My first thought was to read the ssh config file into a list and iterate
> the list, do things on the first server, then break the loop. I felt this
> seemed a bit hokey to find.
>
> Is there any other way to implement this? I've searched Google and
> Stackoverflow, but I got nothing about this.
>
> Your help would be appreciated!
> Vincent
>
>
>
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>
>
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