Just built and installed ansible-1.5-0.git201312162123.fc20.noarch.rpm
ssh-alt Running well except Hitting the following issue:
ignore-errors in loop are failing with ssh_alt
The test I did with ssh_alt during its development was not showing the
issue.
How to reproduce:
have a Play with one task like:
- name: Make sure the following services are turned off
service: name={{ item }} enabled=no state=stopped
with_items: disabled_services_list_var
ignore_errors: True
tags:
- service_disable
and a variable like
disabled_services_list_var:
- 'blk-availability'
- 'certmonger'
- 'cpuspeed'
Note: that certmonger rpm is not installed in the target system
run the play with -c ssh_alt gives:
TASK: [Make sure the following services are turned off]
***********************
changed: [targetsystem] => (item=blk-availability)
fatal: [targetsystem] => SSH Error: data could not be sent to the remote
host. Make sure this host can be reached over ssh
FATAL: all hosts have already failed -- aborting
running without ssh_alt gives:
TASK: [Make sure the following services are turned off]
***********************
changed: [targetsystem] => (item=blk-availability)
failed: [targetsystem] => (item=certmonger) => {"failed": true, "item":
"certmonger"}
msg: cannot find 'service' binary or init script for service, possible
typo in service name?, aborting
...ignoring
ok: [targetsystem] => (item=cpuspeed)
PLAY RECAP
********************************************************************
targetsystem : ok=2 changed=1 unreachable=0 failed=0
2013/12/16 James Tanner <[email protected]>
> ssh_alt has been merged in again with numerous fixes:
> https://github.com/ansible/ansible/pull/5247
>
> We have seen impressive performance increases from using this connection
> method and I would like to thank Jerome Wagner for all the work he has put
> into it.
>
> Per Michael’s previous email, please share your results.
>
> On Dec 10, 2013, at 7:25 PM, Michael DeHaan <[email protected]>
> wrote:
>
> Ok this was breaking async, we will get it working shortly!
>
>
>
>
> On Tue, Dec 10, 2013 at 6:52 PM, Michael DeHaan
> <[email protected]>wrote:
>
>> Hi all,
>>
>> A recent discussion on the development list introduced some great patches
>> from Jerome Wagner, which have streamlined the number of SSH operations
>> Ansible has to perform for a certain class of tasks. This makes the ssh
>> implementation even faster (and especially so with Control Persist on,
>> which we encourage!).
>>
>> This works by not transferring files and creating tempdirs in many
>> situations where a module doesn't require file transfer, rather, by just
>> pushing the module over the SSH channel and running it directly without
>> saving it to disk.
>>
>> It seems to be good for a 40-50% network performance upgrade in a basic
>> case where some steps require file transfer and others don't. It may be
>> much more for many playbooks.
>>
>> It won't be very noticeable if your network is already great, but if it's
>> not, or you're managing across the open internet, it's pretty nice.
>>
>> Naturally, this will do nothing for package update time, which is where
>> you'll be spending most of your management cycles in most playbooks anyway.
>>
>> Rather than directly import this code for testing on the development
>> branch, we've checked it in temporarily as "ssh_alt.py". I'd be curious if
>> you had regular playbooks you used if you could test this version to:
>>
>> (A) see if there are any errors
>>
>> (B) what sort of performance differences you see between -c ssh and -c
>> ssh_alt. (Note: if your playbook has hard coded the connection in it,
>> please remove the connection: line before testing, and be sure you are not
>> using accelerate mode, as this will invalidate the tests).
>>
>> (C) if possible, what data you get for accelerate mode.
>>
>> Please don't share local test (127.0.0.1) numbers, and after we get a few
>> replies, we'll mostly just be interested in hearing about any errors you
>> might have encountered.
>>
>> Remember you need to use -c ssh_alt to activate this for now.
>>
>> Thanks very much and thanks for a very cool patch set Jerome!
>>
>>
>> --
>> Michael DeHaan <[email protected]>
>> CTO, AnsibleWorks, Inc.
>> http://www.ansibleworks.com/
>>
>>
>
>
> --
> Michael DeHaan <[email protected]>
> CTO, AnsibleWorks, Inc.
> http://www.ansibleworks.com/
>
>
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