Running Ansible within Salt How to smoothly migrate away from - - PowerPoint PPT Presentation

Running Ansible within Salt

How to smoothly migrate away from Ansible to Salt

Pablo Suárez Hernández SUSE Senior Software Engineer psuarezhernandez@suse.com Don Vosburg SUSE Technology Specialist dvosburg@suse.com

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People are using Ansible out there!

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People are running Ansible out there!

• Customer’s IT infrastructure already defined with Ansible
• Efforts already invested. Security audit.
• Ansible modules and playbooks all over the places.

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… and they always face the same problems!

• Real-time monitoring
• Event-driven Orchestration
• Scalability

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Salt enables you! Let’s put Salt in your IT.

• Real-time monitoring → beacons!
• Event-driven Orchestration → reactors!
• Scalability → zeromq, syndics!

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But wait! We have a problem!

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But wait! We have a problem!

• Customer IT infrastructure already defined with Ansible
• Efforts already invested. Security audit.
• Ansible modules and playbooks all over the place.

No way of a smooth, step-by-step, planned migration. Only the hard

• way. UNTIL NOW!

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Don’t panic!

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What would happen if ...

we could just simply consider the whole Ansible as a subset of the functionality that Salt provides ?

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Ansible Gate: Cooking Ansible with a bit of Salt

• New module in Salt 2019.2.0 “Fluorine” release
• An innovation coming from SUSE
• Execute Ansible modules from Salt
• Run your playbooks!

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Ansible Gate: Cooking Ansible with a bit of Salt

The Salt “Fluorine” release package is available in:

• SLE15 and SLE15SP1. Base system package
• OpenSUSE Leap 15/15.1, 42.3 and Tumbleweed
• “systemsmanagement:saltstack:products:next/salt” at OBS [1]

[1] - https://build.opensuse.org/package/show/systemsmanagement:saltstack:products:next/salt

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How does the Ansible Gate work?

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How does the Ansible Gate work?

• Ma

n a g e y

• u

r A n s i b l e f r

• m

S a l t

• E

x e c u t e S a l t c

• mma

n d s

• n

y

• u

r A n s i b l e ma n a g e d s y s t e ms ( s a l t

• ma

s t e r & s a l t

• s

s h )

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How does the Ansible Gate work?

# Some examples: # Ansible needs to be installed on the running system. $ salt-call --local ansible.list $ salt-call --local ansible.help system.ping $ salt-call --local ansible.system.ping data=”Hello from Salt”

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How does the Ansible Gate work?

# Some examples: # Ansible needs to be installed on “ansiblenode” minion. # Playbooks are already stored on the “ansiblenode” minion.

$ salt “ansiblenode” ansible.system.ping $ salt “ansiblenode” ansible.packaging.os.zypper name=”iotop” state=”installed”

$ salt “ansiblenode” ansible.playbook playbook=/srv/playbooks/install_nginx.yml

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• Ma

n a g e y

• u

r A n s i b l e f r

• m

S a l t

• E

n a b l e s r e a l

• t

i me mo n i t

• r

i n g a n d e v e n t

• d

r i v e n

• r

c h e s t r a t i

• n

.

• A

d d t h e wh

• l

e mi n i

• n

f u n c t i

• n

a l i t y t

• t

h e A n s i b l e ma n a g e d s y s t e ms .

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Reusing the Ansible Inventory

# Example of running Salt commands # on Ansible managed systems. $ salt-ssh --roster=ansible --roster-file=/etc/ansible/hosts

• N all test.ping

$ salt-ssh --roster=ansible --roster-file=/etc/ansible/hosts

• N webservers service.stop apache2

susecon-fluorine-minion1.tf.local Susecon-fluorine-minion2.tf.local [webservers] susecon-fluorine-minion1.tf.local [py3-hosts] susecon-fluorine-minion1.tf.local susecon-fluorine-minion2.tf.local [py3-hosts:vars] ansible_python_interpreter=/usr/bin/python3

/etc/ansible/hosts

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How to smoothly migrate from Ansible to Salt

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The common Ansible scenario

• A

n s i b l e mo d u l e s

• P

l a y b

• k

s

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Step 0: Adding just few grains of Salt

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Adding some grains of Salt ...

• A

n s i b l e mo d u l e s

• P

l a y b

• k

s

• E

x e c u t e S a l t c

• mma

n d s ( s a l t

• s

s h )

• n

A n s i b l e ma n a g e d s y s t e ms

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Step 1: Salt makes it tasty!

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Salt makes it tasty!

• A

n s i b l e mo d u l e s

• P

l a y b

• k

s

• E

x e c u t e S a l t c

• mma

n d s ( s a l t

• s

s h )

• n

A n s i b l e ma n a g e d s y s t e ms

• R

u n n i n g p l a y b

• k

s a s S a l t j

• b

s .

• E

x e c u t e A n s i b l e mo d u l e s

• n

t h e s a l t

• mi

n i

• n

s y s t e m.

• R

u n n i n g p l a y b

• k

s i n S L S fj l e s !

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• A

n s i b l e mo d u l e s

• P

l a y b

• k

s

• E

x e c u t e S a l t c

• mma

n d s ( s a l t

• s

s h )

• n

A n s i b l e ma n a g e d s y s t e ms

• N

e w g r

• wi

n g S a l t ma n a g e d I T

• E

v e n t

• d

r i v e n

• r

c h e s t r a t i

• n
• n

a h y b r i d e n v i r

• n

me n t

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Step 2: Spreading the Salt all over the place!

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• Ma

n a g e y

• u

r l e g a c y A n s i b l e a s S a l t j

• b

s .

• R

e a l

• t

i me mo n i t

• r

i n g a n d e v e n t

• d

r i v e n

• r

c h e s t r a t i

• n

i n a l l y

• u

r I T ( s a l t

• mi

n i

• n

)

• T

h e wh

• l

e mi n i

• n

f u n c t i

• n

a l i t y

• n

t h e

• l

d A n s i b l e ma n a g e d s y s t e ms .

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Demo time!

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Questions?

T h a n k Y

• u

!

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