►
From YouTube: IBM App Connect's Journey to Istio - Greg Hanson, IBM
Description
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IBM App Connect's Journey to Istio - Greg Hanson, IBM
A
Hi
I'm
Greg
Hansen
I
am
a
software
developer
with
IBM
and,
like
lynn,
said,
I've
been
a
core
contributor
for
this
teo
project,
but
today
I
am
going
to
tell
the
story
of
one
team's
journey
to
adopting
SEO
and
their
service.
So
the
previous
presentation
ties
in
really
well
with
this
and
I'm
glad
they
went
before
me
because
I'll
be
reiterating
some
of
those
same
features.
A
But
before
I
go
any
further,
like
lynn
said,
I
need
to
give
a
shout
out
to
martin
Ross
and
the
app
connect
team
I
am
presenting
in
their
place
today,
since
they
couldn't
be
here
themselves.
They
put
in
most
of
the
hard
work
and
I
as
a
developer
and
maintainer
of
sto
became
their
lead
contact
for
all
their
troubleshooting
needs.
A
So
what
is
app
connect
app
connect
is
a
an
integration
platform
as
a
service
that
provides
support
for
a
range
of
styles,
such
as
events,
api's
and
batch
processing.
The
app
connects
service
itself
is
composed
of
over
a
hundred
and
fifty
different
micro
services,
each
on
a
replica
set
with
a
minimum
of
three
replicas
pour
per
service.
A
So,
as
a
result,
the
app
connects
service
handles
over
20
million
requests
per
day,
ranging
from
users
interacting
with
the
UI
calls
from
scheduled
flows
service
to
service
calls
within
the
mesh
and
calls
to
target
applications
hosted
externally,
usually
system.
As
a
service
endpoints
app
connect
integrates
with
hundreds
and
of
endpoints
and
applications.
The
service
itself
relies
on
external
applications
such
as
Cloudant,
elasticsearch,
Redis,
Kafka
and
Cystic,
to
name
a
few,
but
it
also
supports
the
additional
endpoints
through
the
use
of
connectors
which
get
configured
by
the
end
user.
A
So
just
a
quick
example
here
of
what
a
user
of
app
connect
might
see
in
this
particular
case,
they're
creating
a
flow
from
a
template
and
this
flow
which
runs
periodically
it's.
The
leads
for
a
particular
account
sends
out
some
notifications
and
then
by
a
slacker
email
to
each
lead
and
then
saves
a
database
entry
and
a
back-end
and
kind
of
putting
that
into
a
simple
little
diagram.
A
You
have
incoming
traffic
coming
from
users,
applications
or
those
scheduled
flows
and
the
app
connects
service
itself.
Each
of
the
different
micro
services
handle
the
request
making
calls
to
external
applications,
such
as
monitoring
alerts,
logging,
authentication,
etc,
and
eventually
to
the
corresponding
connectors,
which
interact
with
the
configured
SAS
target
application.
A
Now,
let's
talk
about
app
connect
prior
to
sto,
EPP,
Connect
and
all
of
its
services
were
originally
written.
All
in
nodejs
they
wrote
and
published
their
own
NPM
modules
for
wrappers,
which
perform
consistent
logging,
metrics
and
retry
logic
for
all
their
internal
and
external
traffic
across
all
the
micro
services.
And
since
everything
was
in
node
J
s,
the
department
could
scale
up
and
co-chair
pretty
easily,
and
the
programmers
within
the
team
could
move
around
between
different
components
pretty
smoothly.
A
But
as
more
connectors
were
added,
they
discovered
different
connectors
needed
to
be
in
different
languages,
Java,
for
instance,
so
they're
common
wrappers
could
no
longer
be
just
dropped
right
in
they
needed
to
move
towards
supporting
polyglot
runtimes,
and
for
those
of
you
that
haven't
heard
the
polyglot
word
before
it
means
that
services
can
be
written
in
a
mix
of
any
programming
language
and
a
little
bit
about
their
environment.
Ibm
originally
didn't
have
a
kubernetes
based
cloud
offering
when
app
Connect,
G
ade
and
started
their
initial
development.
A
So
the
team
adopted
a
homegrown
and
non-declarative
model
for
deployment
services
were
all
deployed
by
a
configurable
batch
script,
with
a
bunch
of
Cloud
Foundry
deploy
commands
which
had
to
wait
for
each
one
to
complete
and
they
had
to
be
run.
Sequentially
and
they
took
hours
to
eventually
complete,
so
at
the
time
they
were
not
strictly
following
12
factor
application
and
cloud
native
practices.
All
those
things
about
saying
you
know
having
a
CI
and
continuous
delivery
model
for
all
of
your
applications
and
services.
A
So
just
a
quick
example
of
a
use
case
a
user
may
have
in
this
Cloud
Foundry
environment,
the
user
interacts
with
the
UI
micro
service
to
create
a
flow
and
then
a
separate
authoring
service
stores
that
user
created
flow
in
a
database
back-end
and
behind
the
scenes.
Those
wrapper
libraries
are
calling
external
services
for
logging,
alerting
and
monitoring
services
and
one
more
a
little
bit
more
complex
example.
A
user
creates
an
API
that
is
exposed
and
can
be
called
by
other
applications.
A
The
API
service
receives
the
request
and
it's
sent
to
a
separate
logging
service
and
specifically
for
user
logs
and
stores
those
in
an
elastic
search,
back-end,
and
then
it
also
continues
the
request
on
to
those
various
connectors
which
could
be
one-to-many
to
call
those
SAS
endpoints.
But
the
a
bi
service
also
calls
a
separate
billing
service
to
record
the
number
of
times.
A
particular
API
is
called
so
that
the
end
user
can
eventually
be
billed
for
that
and
once
again,
those
wrappers
for
each
component
are
all
using
those
external
logging
and
alerting
monitoring
services.
A
So
the
app
connect
team
had
some
areas
that
they
wanted
to
improve
upon.
They
were
using
a
very
homegrown
deployment
model
and
wanted
to
move
to
a
declarative
and
more
cloud
native
model,
and,
additionally,
all
the
circuit,
breaking
and
retry
logic
was
currently
hard-coded
using
those
shared
wrapper.
A
Also,
the
UI
developers
in
particular
were
very
interested
in
canary
testing,
opening
up
the
ability
to
share
workloads
between
different
service
versions
for
testing
and
staging
purposes.
The
team
also
wanted
better
visibility
on
their
error
rates,
their
interactions
with
external
systems
and
ingress,
because
in
their
Cloud
Foundry
environment,
there
is
a
go
router
which
sits
in
front
of
their
app
Connect
service,
and
it
performs
a
lot
of
things
behind
the
scenes
and
the
team
wanted
better
observability
and
metrics
on,
say
all
these
rejected
calls
or
the
successful
calls.
A
So
why
is
steo
and
similar
to
link
or
d
SEO?
Is
an
open
platform
service
match
to
connect,
manage,
observe
and
secure
your
micro
services
and
so
app
connect
originally
started
with
only
ten
services
but,
like
I
mentioned
previously
they're
up
to
a
hundred
and
fifty
different
ones,
and
they
are
expanding
and
moving
to
polyglot
runtimes.
They
also
did
not
want
to
maintain
those
wrapper
libraries
and
that
performed
the
consistent
logging,
metrics
and
retries
across
their
entire
service.
A
They
wanted
to
explore
using
Jaeger
and
key
Olly
specifically
for
observability
and
those
end
end
transactions
and
requests,
and
those
specifically
are
installed
as
add-ons
with
Sto
and
they
provide
tracing
and
visual
graphs
to
observe
traffic
within
your
mesh.
They
also
won't
sorry
about
that
anyways.
A
They
also
wanted
better
workload,
control
with
focus
on
canary
testing
and
traffic
splitting,
and
they
wanted
to
utilize.
The
error
injection
for
making
more
robust
and
stable
micro
services
and
also
sto,
has
community
support
and
within
IBM
they
are
developing
on
Sto,
so
they
had
somebody
that
they
could
reach
out
to
on
slack
and
ask
for
questions,
but
also
SDO
itself
has
community
support
on
github
and
discuss
I
Oh,
and
this
new
itself
had
a
lot
of
features
that
they
were
interested
in
playing
with,
but
these
were
the
ones
that
immediately
caught
their
eyes.
A
So
going
back
to
that
same
diagram
as
earlier,
except
deployed
with
sto
on
kubernetes.
The
requests
come
in
through
the
ingress
gateway
which
use
a
combination
of
virtual
and
gateway
rules,
and
these
eventually
route
to
the
micro
services
that
compose
app
connect.
The
services
themselves
then
use
service
entry
rules
to
communicate
with
the
external
applications
for
monitoring,
alerting
and
logging
and
security,
among
others,
and
at
the
bottom.
Those
are
those
SAS
target
applications.
The
connectors
talk
to
app
connect,
supports
a
variety
of
SAS
targets
and,
as
a
result,
cannot
define
all
these
service
entries.
A
That
might
be
needed
for
deployment
for
different
connectors.
A
user
may
set
up
down
the
line
so
as
a
workaround,
the
team
is
using.
The
include
outbound
IP
ranges
notation
within
sto
and
I'll
show
an
example
of
that
later
on
and
once
again,
just
looking
at
that
same
scenario
where
a
user
creates
a
flow
comes
in
through
the
ingress
gateway
and
there's
a
gateway
in
virtual
service
rule
to
direct
traffic
to
the
UI
micro
service
and
these
services
communicate
with
the
external
logging,
alerting
and
storage
services.
A
A
So
just
here
is
a
sample
gateway
rule
that
they're
using
for
controlling
ingress
into
the
app
connect
service
gateway
rules
in
sto
described
ports
which
are
exposed
to
traffic
coming
from
outside
the
mesh,
as
well
as
what
the
protocol
type
sni
configuration,
certs
and
similar.
In
this
rule,
port
443
is
open
for
requests
for
host
names.
Matching
the
app
connect
domain
specified
at
the
bottom
and,
as
you
can
see,
it
has
TLS
enabled
and
something
to
note
in
this
particular
setup.
A
They
do
not
have
HTTP
defined
for
their
gateway,
and
this
is
because
for
their
particular
production
system,
they
have
a
CloudFlare
instance
running
in
front
of
it
that
enforces
all
traffic
to
be
HTTPS.
So
no
HTTP
block
was
required
and
virtual
service
rule
virtual
service
rules
define
how
traffic
is
routed
to
its
service
within
the
mesh
for
this
one.
Here,
it
defines
surrounding
behavior
for
the
port
host
combination
defined
in
that
gateway.
A
It
matches
on
a
particular
hostname
for
the
request
and
routes
to
the
destination
host
and
port,
and
even
though
this
virtual
service
is
defined
with
HTTP,
this
also
works
with
ISTE
OAuth
enabled,
which
will
automatically
upgrade
traffic
to
HTTPS.
So
the
traffic
in
this
case
would
be
from
that
sto
ingress
gateway
instance
to
the
sto
proxy
sidecar.
That's
running
along
the
UI
service.
A
And
here
is
an
example:
service
entry,
service
entry
rules
define
services
that
are
not
automatically
discover
bol
within
the
mesh,
so
that
internal
services
can
route
to
them.
So
this
one
here
is
for
elastic
search
and
I
should
mention
that
URL
is
made
up,
so
please
don't
try
and
reach
out
to
it,
but
it
also
defines
a
port
and
a
protocol
there
for
that.
One-
and
here
is
an
example
or
one
of
their
HTTP
connectors
I
had
mentioned
the
include
outbound
IP
ranges
notation
before.
A
For
those
not
aware
this
annotation
is
used
to
decide
what
traffic
is
actually
sent
to
the
Envoy
proxy
sidecar,
which
runs
alongside
their
service
the
way
it
is
configured
now.
Basically,
all
local
traffic
within
the
mesh
is
caught
by
the
proxy
and
runs
through
that
envoy
proxy,
but
everything
else
bypasses
it
since
app
Connect
service
doesn't
know
all
the
endpoints,
the
user
make
specify
when
configuring
a
connector.
This
is
the
current
workaround.
There
is
still
investigated
investigating
alternative
solutions
for
this,
because
they
eventually
want
observability
and
metrics
on
those
calls
to
external
applications.
A
So
where
is
AB
Connect
team
today?
With
this?
Do
they
have
been
using
it
for
over
a
year
now,
sto
version
1.0
dot?
4
was
the
first
one
installed
on
one
of
their
primary
clusters,
but
they
have
been
playing
around
with
versions
as
early
as
0
9
and
0
7.
In
their
test
environments,
they
have
a
pre,
prod
system
up
and
running
everything
deployed
using
pipelines
and
testing
is
currently
underway
for
validation
and
scale
purposes.
A
They
also
have
a
production
environment
deploy,
and
it's
waiting
for
that
testing
to
complete
their
current
environments,
have
the
sto
ingress
gateway,
install
with
Auto
injection
enabled,
which
automatically
deploys
that
sto
proxy
sidecar
along
each
of
their
services
automatically.
They
also
have
MPLS
enabled
globally,
so
that
traffic
between
the
proxies
within
the
mesh,
just
by
default
and
they're,
also
using
me
rewrite
app
HTTP,
probe
notation,
which
is
something
needed
once
MPLS
has
enabled
this
flag
tells
the
injector
to
rewrite
the
aliveness
health
check
in
the
pot
spec
to
redirect
traffic
to
the
sidecar.
A
So
let's
talk
a
little
bit
about
their
adoption
process.
They
ran
into
some
stability
issues
with
sto
prior
to
version
1.1
503
specifically,
and
for
those
of
you
that
remember
those
days
503
s
we're
quite
the
bane
of
sto
existence,
which
made
the
team's
initial
attempts
more
difficult
to
diagnose
and
debug
along
the
way,
but
they're
not
seeing
those
503
s
anymore,
and
it
was
a
learning
experience
for
their
team
understanding
in
finer
detail
how
their
services
talked
to
external
endpoints.
A
Personally,
one
time
I
was
poring
over
some
trace
on
void
level
access
logs
with
them
wondering
why
particular
requests
were
failing
to
Cloudant,
and
eventually
we
find
out
that
it
was
a
wild
card
domain
defined
for
one
of
their
service
entries,
and
it
just
happened
to
be
missing
like
one
out
of
the
five
URLs
that
the
service
was
trying
to
communicate
with,
but
they
didn't
know
that
was
communicating
with
that
one
and
so
hence
the
failure.
Another
pain
point
was
pod
startup
time
when
you
inject
the
citecar
proxy
to
services
to
deployment.
A
It
takes
a
little
bit
for
the
proxy
to
spin
up
and
a
lot
of
their
services.
We're
always
expecting
to
have
networking
available
at
startup,
so
their
services
would
fail.
The
initial
calls
to
set
up
connections
to
external
applications,
and
some
of
them
were
never
retrying
on
failure
and
in
a
few
instances
they
also
didn't
crash
on
failure.
So
these
services
would
come
up
failed.
You
connect
to
this
external
say
database
stay
up,
but
then
not
actually
be
able
to
process
any
incoming
requests.
A
Another
item
was
implementing
the
ingress
solution,
which
was
not
as
straightforward
and
it's
because
ingress
usually
ends
up
being
partly
environment.
Specific
and
I
have
a
slide
to
follow
for
that
one
also.
They
needed
to
decide
how
deployments
are
handled
specifically
with
automating.
The
updates
of
sto
versions,
because,
while
Sto
does
have
long-term
support
for
so
many
previous
versions,
they
do
eventually
need
to
be
updated,
and
so
their
current
solution
right
now
is
to
perform
some
manual
testing
then
run
component
and
integration
tests
and
eventually
promote
to
the
product
production
using
pipelines.
A
The
team
also
wants
to
be
able
to
start
using
more
features
of
Sto,
but
currently
a
number
of
them
are
disabled.
During
deployment,
the
team
found
that
some
failures
were
getting
introduced
in
components
that
they
weren't
actively
using,
but
since
they
weren't
using
them,
they
weren't
looking
for
errors
and
those
specific
components.
A
So
just
going
over
some
of
those
specific
sto
components
that
they're
using
for
the
ingress
gateway.
This
is
a
setup
for
a
multi
zone.
Cluster,
it's
a
little
environment
specific,
so
I
won't
go
into
too
much
detail.
This
ended
up
being
one
of
their
pain
points
because
at
the
time
of
their
implementation,
sto
docks
were
kind
of
locking
lacking
for
a
multi
zone
as
well
as
IBM's
own.
But
the
app
connect
service
has
three
public
IP
s.
A
They
have
a
cloned
network
load
balancer
service
for
each
availability
zone
and
they
have
that
modified
to
point
to
different
IPS
for
each
a
Z
and
then
behind
each
network
load
balancer
is
an
sto
ingress
gateway
and
the
specific
services
running
for
that
a
Z.
So
when
a
client
calls
this
DNS
service,
which
has
been
performing
health
checks
on
each
sto,
ingress
gateway
for
each
a
Z
it'll
only
return
in
healthy
end
point
so
that
client
gets
say
IP
for
a
specific
availability
zone
and
completes
its
request.
A
App
Connect
is
also
running
with
sto
auth
enabled.
So
all
the
services
within
the
mesh
are
communicating
with
each
other
through
their
local
proxies
using
MPLS,
but
this
was
added
in
after
everything
else
was
working,
so
that
means
ingress
the
auto
injection
and
routing
they
started
with
disabled
move
to
passive
and
eventually
striked
and,
as
you
can
see,
the
ISTE
o
team
or
Sonya
the
AB
connect
team.
It's
currently
only
using
pilot
in
Citadel
and
galleys
should
be
up
there.
So
once
again,
pilot
is
pushing
those
conflicts
to
each
of
the
Envoy
proxies.
A
So,
looking
forward,
the
app
connect
team
still
has
more
features
that
it
wants
to
adopt.
It
wants
observability
with
key
ally
and
Jaeger.
They
want
to
move
to
1.3
and
eventually
wound
up
four,
and
they
also
want
to
adopt
the
operator
model
for
installing
things
across
their
service.
They
also
want
to
perform
locale
where
routing
so
going
back
to
that
mul
play
zone
example.
A
Not
in
use
don't
need
to
introduce
failures.
If
you
don't
need
to
be
using
that
component
also
think
about
how
ingress
will
be
handled
in
your
environment.
One
of
the
things
to
think
about
is:
do
you
want
to
chain
your
existing
ingress
solution
to
a
sto,
ingress
gateway
or
just
dive
straight
in
with
ISTE
O's
for
the
app
connect
team,
they
were
already
switching
from
Cloud
Foundry
to
kubernetes,
so
they
had
to.
They
were
doing
away
with
their
existing
ingress
implementation
anyways
and
it
was
easier
for
them
to
just
dive
right
in
with
is
teos.
A
Something
else
make
sure
you're
enforcing
good
development
practices,
make
sure
you're
thinking,
cloud
native
and
12
factor.
Also,
please
learn
about
how
your
applications
talk
to
your
external
endpoints
and
how
your
services
interact
with
them,
especially
on
failure
also
think
about
how
you
want
to
handle
updates
or
sto.
A
Since
they
will
happen,
you
want
the
latest
and
greatest
so
make
sure
you're
ready
for
them
when
they
come
out
and
one
other
thing
that
the
team
wanted
to
stress
with
Auto
injection
is
they
were
surprised
that
once
they
got
it
working,
there
were
a
few
bugs
with
their
first
initial
passes,
but
once
you
figure
it
out,
you
deploy
your
service
is
injected
with
the
sidecar
and
communication
just
works
within
your
mesh,
and
so
that's
about
all
I
had
do.
I
have
any
time
for
questions
Lyn,
okay,
perfect!
A
A
So
it's
something
they
want
to
implement
down
the
line.
They
haven't
done
it
yet,
oh,
so
the
question
was:
how
do
you
want
to
handle
or
how
are
you
currently
handling
canary
deployments
in
your
production
environment
and
the
question,
and
the
answer
is,
unfortunately
they
are
not
doing
it
yet.
So
I
cannot
provide
an
exact
answer
to
that
in
the
front
here.
A
Let's
see
in
production,
I
can't
say
for
sure,
but
there
are
other
teams
that
are
using
it
for
deployments
just
similar
canactually.
Those
people
are
using
canary
testing
for
their
deployments,
but
I
do
not
know
off
the
top
of
my
head
yeah.
We
have
several
teams
in
the
UK
that
have
been
playing
around
with
app
connect.
I,
don't
know,
Lynn
am
I
missing
anybody
or
sorry.
Several
teams
in
the
UK
that
have
been
playing
around
with
this
do
but
am
I
missing
any
other
big
internal
users
of
this
do
with
an
IBM.
B
Yeah
we
do
have
other
teams,
so
the
weather
company
was
the
first
team
actually
adopting
it
still,
and
we
thought
it
would
be
really
interesting
to
have
the
app
connect
him
talking
to
you,
because
they
are
actually
running
the
larger
scale
with
500
containers.
We
also
have
internally,
we
have
actually
a
lot
of
team.
We
have
API
team,
we
have
our
Watson
team.
B
A
lot
of
the
teams
are
actually
come
to
the
SEO
team
because
we
have
an
architecture,
our
carwash
program,
inside
of
the
IBM
and
as
part
of
the
program,
the
architecture
team
wants
each
of
the
micro
services
make
sure
they
have
similar
communication,
secure
identity
and
it
still
is
often
proposed
as
a
solution
to
that.
So
there's
a
lot
of
a
team
inside
of
IBM,
actually
looking
and
even
adopting,
is
your
for
that
reason.
Just
for
mutual
tears.