[ClusterLabs] Antw: Re: Q: ocf:pacemaker:NodeUtilization monitor

[Andrei Borzenkov]

29.05.2019 11:12, Ulrich Windl пишет:
>>>> Jan Pokorný <jpokorny at redhat.com> schrieb am 28.05.2019 um 16:31 in
> Nachricht
> <20190528143145.GA29171 at redhat.com>:
>> On 27/05/19 08:28 +0200, Ulrich Windl wrote:
>>> I copnfigured ocf:pacemaker:NodeUtilization more or less for fun, and I 
>> realized that the cluster rrepiorts no problems, but in syslog I have these
> 
>> unusual messages:
>>> 2019‑05‑27T08:21:07.748149+02:00 h06 lrmd[16599]:   notice: 
>> prm_node_util_monitor_300000:15028:stderr [ info: Writing node (dir)Top...
> ]
>>> 2019‑05‑27T08:21:07.748546+02:00 h06 lrmd[16599]:   notice: 
>> prm_node_util_monitor_300000:15028:stderr [ info: Cannot find node `(dir)GNU
> 
>> Free Documentation License'. ]
>>> 2019‑05‑27T08:21:07.748799+02:00 h06 lrmd[16599]:   notice: 
>> prm_node_util_monitor_300000:15028:stderr [ info: Done. ]
>>>
>>>
>>> "(dir)" looks a lot like Documentation. What has the monitor to do with 
>> documentation?
>>
>> The above looks as if you run "info" without arguments (it will try
>> to dispay initial page '(dir)Top' ‑‑ and moreover perhasp when it is
>> not found).
>>
>> I have no idea how this could happen, since there's the only reference
>> to "info" and it seems basic‑sanity guarded:
>>
>>
> https://github.com/ClusterLabs/resource‑agents/blob/v4.2.0/heartbeat/NodeUtil
> 
>> ization#L119
>>
>>> 118     if [ ‑x $xentool ]; then
>>> 119         $xentool info | awk
> '/total_memory/{printf("%d\n",$3);exit(0)}'
>>> 120     else
>>> 121         ocf_log warn "Can only set hv_memory for Xen hypervisor"
>>> 122         echo "0"
>>
>> So kind of a mystery :‑)
> 
> Except when $xentool is undefined ;-)

How can condition [ -x $xentool ] be true then? Unless there actually is
binary with name "]" and it happened to be in local directory (whatever
local directory is when this script is executed).