<s>
Stacki	B-Operating_System
is	O
a	O
computer	B-Architecture
cluster	I-Architecture
software	O
product	O
from	O
the	O
company	O
StackIQ	O
,	O
released	O
as	O
open-source	B-Application
software	I-Application
.	O
</s>
<s>
Its	O
first	O
product	O
was	O
a	O
commercial	O
version	O
of	O
a	O
Linux	B-Application
distribution	I-Application
called	O
the	O
Rocks	B-Operating_System
Cluster	I-Operating_System
Distribution	I-Operating_System
.	O
</s>
<s>
A	O
product	O
called	O
StackIQ	O
cluster	B-Operating_System
manager	I-Operating_System
was	O
renamed	O
StackIQ	O
Boss	O
in	O
February	O
2015	O
.	O
</s>
<s>
Stacki	B-Operating_System
works	O
on	O
several	O
servers	O
at	O
the	O
same	O
time	O
,	O
so	O
it	O
takes	O
about	O
as	O
long	O
to	O
provision	O
any	O
number	O
of	O
servers	O
.	O
</s>
<s>
The	O
system	O
allows	O
installations	O
via	O
the	O
Preboot	B-Device
Execution	I-Device
Environment	I-Device
(	O
PXE	O
)	O
,	O
and	O
supports	O
both	O
an	O
“	O
all	O
servers	O
that	O
boot	O
on	O
this	O
network	O
”	O
and	O
an	O
“	O
all	O
servers	O
in	O
this	O
spreadsheet	O
”	O
method	O
of	O
installations	O
.	O
</s>
<s>
So	O
if	O
the	O
servers	O
to	O
be	O
installed	O
are	O
on	O
an	O
isolated	O
network	O
,	O
a	O
Stacki	B-Operating_System
tool	O
called	O
insert-ethers	O
can	O
be	O
run	O
to	O
grab	O
each	O
machine	O
that	O
boots	O
on	O
the	O
network	O
and	O
add	O
it	O
to	O
Stacki	B-Operating_System
,	O
commencing	O
an	O
installation	O
if	O
needed	O
.	O
</s>
<s>
If	O
the	O
servers	O
to	O
be	O
installed	O
are	O
on	O
a	O
shared	O
network	O
,	O
then	O
loading	O
a	O
spreadsheet	O
of	O
machines	O
to	O
install	O
tells	O
Stacki	B-Operating_System
which	O
ones	O
it	O
should	O
install	O
.	O
</s>
<s>
Stacki	B-Operating_System
uses	O
a	O
database	O
to	O
manage	O
variables	O
for	O
use	O
during	O
installation	O
.	O
</s>
<s>
Stacki	B-Operating_System
was	O
released	O
in	O
June	O
2015	O
.	O
</s>
