Errata

"Execute the script on web1, web2, web3."

->

"Execute the script on web1, web2, and web3."

This is to be consistent with Step 2.

I'm embarrassed to even mention this, but Figure 1-1 says:

"Install nginx"

but the prose above it says:

"install nginx"

"A play associates an unordered set of hosts with an ordered list of task_"

->

"A play associates an unordered set of hosts with an ordered list of tasks"

"Our dynamic inventory script will need to call these commands, parse the outputs, and output the appropriate json."

->

"Our dynamic inventory script will need to call these commands, parse the outputs, and output the appropriate JSON."

"You can grab these by going to the Ansible GitHub repo and
browsing to the plugins/inventory directory."

The location have the dynamic inventory scripts appears to have changed. I believe it's currently

ansible/lib/ansible/inventory/

Note from the Author or Editor:
Apparently, these scripts are now the contrib/inventory directory in the ansible/ansible github repo.

"Here’s the add_host command in action, bringing up a new vagrant machine"

->

"Here’s the add_host command in action, bringing up a new Vagrant machine"

- name: Bring up a vagrant server
command: vagrant up
- name: add the Vagrant hosts to the inventory

->

- name: Bring up a vagrant machine
command: vagrant up
- name: add the vagrant machine to the inventory



This is to be consistent with the wording in the rest of the play.

"Ansible also let you define variables"

->

"Ansible also lets you define variables"

"Ansible will recognize the file if it’s:"

->

"Ansible will recognize the file if it’s any of the following:"

"can place one or more files on the host machine"

->

"can place one or more files on the remote host machine"

You need to be clear about which machine you're talking about. This is
especially true since the topic of this section is "Local Facts" but we're talking about putting a file on a remote machine.

"when you want to want to use"

->

"when you want to use"

"you’ll need two use quotes like this:"

->

"you’ll need to use quotes like this:"

(I'm almost too embarrassed to mention this since it's such a trivial error.)

"If the request is for a static asset, such as a css file,"

->

"If the request is for a static asset, such as a ,css file,"

(A mention two paragraphs above uses ".css" so pick one or the other.)

(Another trivial mistake ...)

"by making an http request"

->

"by making an HTTP request"

(You capitalize HTTP everywhere else on the page.)

"/hom/deploy/myapp/static/style.css"

->

"/home/deploy/myapp/static/style.css"

The word "database_user" was broken in a strange way.

(Another trivial typo.)

"Example 6-4. apt cache output"

->

"Example 6-4. apt-cache output"

"the names of all of the Apt packages"

->

"the names of all of the apt packages"

This is to be consistent with the usage on the previous page.

"virtualenv" has a bad word break.

This is another of those bad word break issues.

createdb is broken as

crea
tedb

The word "environment" is broken incorrectly in two places.

(Another trivial issue)

"If the supervisor configuration file changes"

->

"If the Supervisor configuration file changes"

Also, the word "supervisor" is broken incorrectly.

live_hostname: "{{ ansible_eth1.ipv4.address }}.xip.io"
domains:
- ansible_eth1.ipv4.address.xip.io
- www.ansible_eth1.ipv4.address.xip.io

should be...

live_hostname: "{{ ansible_eth1.ipv4.address }}.xip.io"
domains:
- "{{ ansible_eth1.ipv4.address }}.xip.io"
- www.{{ansible_eth1.ipv4.address}}.xip.io

or something close to that...

Note from the Author or Editor:
should be:

live_hostname: "{{ ansible_eth1.ipv4.address }}.xip.io"
domains:
- "{{ ansible_eth1.ipv4.address }}.xip.io"
- www.{{ansible_eth1.ipv4.address}}.xip.io

'...which lets will run a play against all known hosts:'

Should probably read: '... which lets you run a play...'

'... that are useful when a variable contains the path to a variable on the control machine’s filesystem.'

Should probably read: '...that are useful when a variable contains the path to a file...'

(Very minor typo)

"in the roles directory alongside your . playbooks."

->

"in the roles directory alongside your playbooks."

"and you wanted to send a notification to Slack channel"

->

"and you wanted to send a notification to a Slack channel"

"Example 8-9 shows the default variables defined on our mezzanine role."

->

"Example 8-9 shows the default variables defined in our mezzanine role."

"This will time how long it takes to indicate an SSH connection"

->

"This will time how long it takes to initiate an SSH connection"

"and another session to execute the host"

->

"and another session to execute the module file"

Text reads:

$HOME/.ansible.cp

Should be:

$HOME/.ansible/cp

(This is a very trivial error)

"Example 9-7. ansible.cfg Enable fact caching"

->

"Example 9-7. ansible.cfg enable fact caching"


(You don't capitalize words in example captions elsewhere in the book.)

(This is another extremely trivial error).

"To enable the JSON fact-caching backend"

->

"To enable the JSON file fact-caching backend"

(This is to be consistent with the usage in the previous paragraph.)

"Specifying an Alternaive Location for Bash"

"Alternaive" should be "Alternative".

"they typically give you provision storage so you can attach and detach
disks to your servers."

->

"they typically let you provision storage so you can attach and detach
disks to your servers."

"... but I must admit that I never bothing doing this ..."

"bothing" should be "bother", I believe.

Text states: "The c2_group module ..."

It should state: "The ec2_group module ..."

"... you encounter colleagues who is in clear need"

The "is" should be an "are" here, I believe.