Gauravtalreja1

cd ~/hammer-cli-katello
bundle install
bundle exec bash
cd ~
wget https://partha.fedorapeople.org/devel/hammer.tgz
tar zxf hammer.tgz
ll .hammer # verify there's stuff in that dir

cd hammer-cli-katello
hammer ping

Gauravtalreja1

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Satellite 6 Provisioning Basics

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• Anything involving PXE/iPXE requires the TFTP service. Always.

• Most PXE/iPXE cannot utilize HTTPS protocol.

• PXE requires pxelinux.0, provided by the TFTP service. Check permissions, ownership, and contexts of related files:

Gauravtalreja1

General OpenSSL Commands

These commands allow you to generate CSRs, Certificates, Private Keys and do other miscellaneous tasks.

Generate a new private key and Certificate Signing Request

openssl req -out CSR.csr -new -newkey rsa:2048 -nodes -keyout privateKey.key

Gauravtalreja1

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

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General rules

1. Follow standard conventions.
2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
3. Boy scout rule. Leave the campground cleaner than you found it.
4. Always find root cause. Always look for the root cause of a problem.

Design rules

Gauravtalreja1

My Openshift Cheatsheet

Openshift build secrets for cloning git repos using SSH Keys

• To create ssh secret:

oc create secret generic sshsecret \
    --from-file=ssh-privatekey=$HOME/.ssh/id_rsa

Gauravtalreja1

def func(self, var):
    i = 0
    numbers = []
    while i < self.var:
        print(f"At the top i is {i}")
        numbers.append(i)
        i = i + 1
        print("Numbers now: ", numbers)
        print(f"At the bottom i is {i}")
        print("-" *20)

Gauravtalreja1

class Song(object):
    def __init__(self, lyrics):
        self.lyrics = lyrics
    def sing_me_a_song(self):
        for line in self.lyrics:
            print(line)

happy_bday = Song(["Happy birthday to you",
"I don't want to get sued",
"So I'll stop right there"])

Gauravtalreja1

class Song(object):
    def __init__(self, lyrics):
        self.lyrics = lyrics
    def sing_me_a_song(self):
        for line in self.lyrics:
            print(line)

happy_bday = Song(["Happy birthday to you",
"I don't want to get sued",
"So I'll stop right there"])