Error in yaml code could not find expected ':' - ansible

Question

yaml code
- hosts: all
tasks:
#Import Remi GPG key - see: http://rpms.famillecollet.com/RPM-GPG-KEY-remi
wget http://rpms.famillecollet.com/RPM-GPG-KEY-remi \ -O /etc/pki/rpm-gpg/RPM-GPG-KEY-remi
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-remi
#Install Remi repo
rpm -Uvh --quiet \
http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
Install EPEL repo.
yum install epel-release
Install Node.js (npm plus all its dependencies).
yum --enablerepo=epel install node
I am getting following error when compiling: ERROR! Syntax Error while loading YAML.
The error appears to have been in '/home/shahzad/playbook.yml': line
7, column 3, but may be elsewhere in the file depending on the exact
syntax problem.
The offending line appears to be:
wget http://rpms.famillecollet.com/RPM-GPG-KEY-remi \ -O /etc/pki/rpm-gpg/RPM-GPG-KEY-remi
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-remi
^ here
exception type: <class 'yaml.scanner.ScannerError'>
exception: while scanning a simple key
in "<unicode string>", line 6, column 3
could not find expected ':'
in "<unicode string>", line 7, column 3

Answer 1

I installed everything from the instructions above, but i used the installer alien for converting and installing rpm packages on Ubuntu 18.04.
But you will not be able to install with yum, since some packages are not in its list.
use alien:
# apt install alien # apt install -y
# cd /tmp
# wget http://rpms.famillecollet.com/RPM-GPG-KEY-remi \ -O /etc/pki/rpm-gpg/RPM-GPG-KEY-remi
# wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
# alien -kiv remi-release-6.rpm
# ls -l
# wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
# alien epel-release-latest-8.noarch.rpm
# ls -l
# alien -k epel-release-latest-8.noarch.rpm ; alien -i epel-release-latest-8.noarch.rpm
# cd /home/user
# apt install curl gcc g++ make # apt install -y
# curl -sL https://deb.nodesource.com/setup_14.x | sudo -E bash -
# apt install nodejs # apt install -y
# curl -sL https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
# echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
# apt update ; sudo apt install yarn # apt install -y
# apt install nodejs ; apt upgrade ; passwd -dl root ; reboot # apt install -y
But i still have the same error Invalid YAML: could not find expected ':':, but on command networkctl it became better for me to see , it says failed (although before installing node.js, remi-release, epel-release it didn't sign it like that) which interfaces are not configured correctly.
IDX LINK TYPE OPERATIONAL SETUP
1 lo loopback carrier unmanaged
2 ens11 ether off unmanaged
3 enp2t1 ether routable configured
4 br0 ether off failed
5 vlan5 ether off configuring
These installed packages let you see the interface error in depth, this method works!!!!!!!! Shahzad Adil shaikh thank your!

Answer 2

I was getting same error while running commands using PowerShell task in yaml.
- task: PowerShell#1
inputs:
scriptType: inlineScript
inlineScript: |
Command1
Commands2
I fixed this error by indenting the commands/script block.
You need to indent Command1 one lever under inlineScript: |.

Answer 3

If you wish to use shell commands in your yaml playbook such as wget, you'll need to use the shell module:
- name: Import Remi GPG key
shell: wget ...
":" is a special character in yaml, please read the YAML Syntax page in the official ansible documentation, for quoting.
As for yum commands, you may use ansible's yum module.
As a best practice, you may use http://www.yamllint.com/ for debugging your YAML syntax, checking for the exact line & column where the parser fails.