<s>
Progress	B-Application
Chef	I-Application
(	O
formerly	O
Chef	B-Application
)	O
is	O
a	O
configuration	B-General_Concept
management	I-General_Concept
tool	O
written	O
in	O
Ruby	B-Language
and	O
Erlang	B-Operating_System
.	O
</s>
<s>
It	O
uses	O
a	O
pure-Ruby	O
,	O
domain-specific	B-Language
language	I-Language
(	O
DSL	O
)	O
for	O
writing	O
system	O
configuration	O
"	O
recipes	O
"	O
.	O
</s>
<s>
Chef	B-Application
is	O
used	O
to	O
streamline	O
the	O
task	O
of	O
configuring	O
and	O
maintaining	O
a	O
company	O
's	O
servers	O
,	O
and	O
can	O
integrate	O
with	O
cloud-based	B-Architecture
platforms	O
such	O
as	O
Amazon	B-General_Concept
EC2	I-General_Concept
,	O
Google	B-General_Concept
Cloud	I-General_Concept
Platform	I-General_Concept
,	O
Oracle	B-General_Concept
Cloud	I-General_Concept
,	O
OpenStack	B-Application
,	O
IBM	B-General_Concept
Cloud	I-General_Concept
,	O
Microsoft	B-Application
Azure	I-Application
,	O
and	O
Rackspace	O
to	O
automatically	O
provision	O
and	O
configure	O
new	O
machines	O
.	O
</s>
<s>
Chef	B-Application
contains	O
solutions	O
for	O
both	O
small	O
and	O
large	O
scale	O
systems	O
.	O
</s>
<s>
The	O
user	O
writes	O
"	O
recipes	O
"	O
that	O
describe	O
how	O
Chef	B-Application
manages	O
server	O
applications	O
and	O
utilities	O
(	O
such	O
as	O
Apache	B-Application
HTTP	I-Application
Server	I-Application
,	O
MySQL	B-Application
,	O
or	O
Hadoop	B-Application
)	O
and	O
how	O
they	O
are	O
to	O
be	O
configured	O
.	O
</s>
<s>
Chef	B-Application
makes	O
sure	O
each	O
resource	O
is	O
properly	O
configured	O
and	O
corrects	O
any	O
resources	O
that	O
are	O
not	O
in	O
the	O
desired	O
state	O
.	O
</s>
<s>
Chef	B-Application
can	O
run	O
in	O
client/server	B-Operating_System
mode	O
,	O
or	O
in	O
a	O
standalone	O
configuration	O
named	O
"	O
chef-solo	B-Application
"	O
.	O
</s>
<s>
In	O
client/server	B-Operating_System
mode	O
,	O
the	O
Chef	B-Application
client	O
sends	O
various	O
attributes	O
about	O
the	O
node	O
to	O
the	O
Chef	B-Application
server	O
.	O
</s>
<s>
The	O
server	O
uses	O
Elasticsearch	B-Application
to	O
index	O
these	O
attributes	O
and	O
provides	O
an	O
API	B-Application
for	O
clients	O
to	O
query	O
this	O
information	O
.	O
</s>
<s>
Chef	B-Application
recipes	O
can	O
query	O
these	O
attributes	O
and	O
use	O
the	O
resulting	O
data	O
to	O
help	O
configure	O
the	O
node	O
.	O
</s>
<s>
Traditionally	O
,	O
Chef	B-Application
was	O
used	O
to	O
manage	O
Linux	B-Application
but	O
later	O
versions	O
add	O
support	O
for	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
It	O
is	O
one	O
of	O
the	O
major	O
configuration	B-General_Concept
management	I-General_Concept
systems	O
on	O
Linux	B-Application
,	O
along	O
with	O
CFEngine	B-Protocol
,	O
Ansible	B-Language
and	O
Puppet	B-Application
.	O
</s>
<s>
More	O
than	O
a	O
configuration	B-General_Concept
management	I-General_Concept
tool	O
,	O
Chef	B-Application
,	O
along	O
with	O
Puppet	B-Application
and	O
Ansible	B-Language
,	O
is	O
one	O
of	O
the	O
industry	O
's	O
most	O
notable	O
Infrastructure	B-Architecture
as	I-Architecture
Code	I-Architecture
(	O
IAC	B-Architecture
)	O
tools	O
.	O
</s>
<s>
Chef	B-Application
was	O
created	O
by	O
Adam	O
Jacob	O
as	O
a	O
tool	O
for	O
his	O
consulting	O
company	O
,	O
whose	O
business	O
model	O
was	O
to	O
build	O
end-to-end	O
server/deployment	O
tools	O
.	O
</s>
<s>
Jacob	O
showed	O
Chef	B-Application
to	O
Jesse	O
Robbins	O
,	O
who	O
saw	O
its	O
potential	O
after	O
running	O
operations	O
at	O
Amazon	B-Application
.	O
</s>
<s>
They	O
founded	O
a	O
new	O
company	O
with	O
Barry	O
Steinglass	O
,	O
Nathen	O
Haneysmith	O
,	O
and	O
Joshua	O
Timberman	O
to	O
turn	O
Chef	B-Application
into	O
a	O
product	O
.	O
</s>
<s>
The	O
project	O
was	O
originally	O
named	O
"	O
marionette	O
"	O
,	O
but	O
the	O
word	O
was	O
too	O
long	O
and	O
cumbersome	O
to	O
type	O
;	O
naming	O
the	O
format	O
modules	O
were	O
prepared	O
in	O
"	O
recipe	O
"	O
led	O
to	O
the	O
project	O
being	O
renamed	O
"	O
Chef	B-Application
"	O
.	O
</s>
<s>
In	O
February	O
2013	O
,	O
Opscode	O
released	O
version	O
11	O
of	O
Chef	B-Application
.	O
</s>
<s>
Changes	O
in	O
this	O
release	O
included	O
a	O
complete	O
rewrite	O
of	O
the	O
core	O
API	B-Application
server	O
in	O
Erlang	B-Operating_System
.	O
</s>
<s>
In	O
April	O
2019	O
,	O
the	O
company	O
announced	O
that	O
the	O
source	O
code	O
for	O
their	O
software	O
would	O
continue	O
to	O
be	O
released	O
under	O
the	O
Apache	B-Application
2.0	O
license	O
,	O
while	O
binaries	O
would	O
only	O
be	O
available	O
under	O
the	O
terms	O
of	O
a	O
proprietary	O
license	O
.	O
</s>
<s>
In	O
response	O
,	O
the	O
Cinc	O
project	O
began	O
releasing	O
Apache	B-Application
2.0	O
licensed	O
binaries	O
of	O
several	O
Chef	B-Application
products	O
.	O
</s>
<s>
On	O
September	O
8	O
,	O
2020	O
,	O
Progress	O
announced	O
the	O
acquisition	O
of	O
Chef	B-Application
.	O
</s>
<s>
Chef	B-Application
is	O
supported	O
on	O
multiple	O
platforms	O
according	O
to	O
a	O
supported	O
platforms	O
matrix	O
for	O
client	O
and	O
server	O
products	O
.	O
</s>
<s>
Major	O
platform	O
support	O
for	O
clients	O
includes	O
AIX	B-Application
,	O
Amazon	B-Application
Linux	B-Application
,	O
Debian	O
,	O
CentOS/RHEL	O
,	O
FreeBSD	B-Operating_System
,	O
macOS	B-Application
,	O
Solaris	B-Application
,	O
SUSE	O
Linux	B-Application
,	O
Microsoft	B-Application
Windows	I-Application
and	O
Ubuntu	B-Operating_System
.	O
</s>
<s>
Additional	O
client	O
platforms	O
include	O
Arch	O
Linux	B-Application
and	O
Fedora	O
.	O
</s>
<s>
Chef	B-Application
Server	O
is	O
supported	O
on	O
RHEL/CentOS	O
,	O
Oracle	O
Linux	B-Application
,	O
SUSE	O
Linux	B-Application
and	O
Ubuntu	B-Operating_System
.	O
</s>
<s>
Chef	B-Application
is	O
used	O
by	O
Facebook	B-Application
,	O
AWS	O
OpsWorks	O
,	O
Prezi	B-Application
,	O
and	O
BlackLine	B-Application
.	O
</s>
