Bash script to install Redis on Ubuntu server protected with OpenSSL password

install-redis.sh

#!/bin/bash

clear

#color the output of echo
COLOR='\033[1;32m'
RED='\033[0;31m'
WHITE='\033[1;37m'
NC='\033[0m' # No Color

echo -e "${COLOR}>>>>>>>>>  UPDATE UBUNTU${NC}"
apt update

echo -e "${COLOR}>>>>>>>>>  BACKUP ALREADY INSTALLED REDIS SERVER CONFIG${NC}"
cp /etc/redis/redis.conf /etc/redis/redis.conf.$(date +%y%b%d-%H%M%S)  &> /dev/null 

echo -e "${COLOR}>>>>>>>>>  REMOVE ALREADY INSTALLED REDIS SERVER${NC}"
apt remove -y redis-server && apt purge -y redis-server && apt autoremove -y 
rm -rf /etc/redis
sleep 1

echo -e "${COLOR}>>>>>>>>>  FRESH INSTALL REDIS SERVER${NC}"
apt install -y curl build-essential tcl redis-server
sleep 1

echo -e ">>>>>>>>>  STOP REDIS SERVER IF RUNNING (just in case)${NC}"
systemctl stop redis &> /dev/null

echo -e "${COLOR}>>>>>>>>>  BACKUP DEFAULT CONFIGURE ${NC}"
cp /etc/redis/redis.conf /etc/redis/redis.conf.default

RDS_CFG=$(cat /etc/redis/redis.conf)

echo -e "${COLOR}>>>>>>>>>  CONFIGURE SUPERVISED${NC}"
RDS_CFG=$(echo "$RDS_CFG" | sed -e 's/^supervised no/supervised systemd/')
[[ -z "$RDS_CFG" ]] && echo -e "${RED}Unable to configure supervised${NC}" && exit 1

echo -e "${COLOR}>>>>>>>>>  CONFIGURE BIND IP${NC}"
RDS_CFG=$(echo "$RDS_CFG" | sed -e 's/^\# *bind 127\.0\.0\.1 ::1/bind 127.0.0.1 ::1/')
[[ -z "$RDS_CFG" ]] && echo -e "${RED}Unable to configure bind ip${NC}" && exit 1

echo -e "${COLOR}>>>>>>>>>  CONFIGURE SECURITY KEY${NC}"
REDIS_PASSWORD=$(openssl rand 60 | openssl base64 -A)
echo "${REDIS_PASSWORD}" > /tmp/redis-password
echo -e "${COLOR}>>>>>>>>>  PASSWORD BACKED UP AT /tmp/redis-password${NC}"
sleep 1

RDS_CFG=$(echo "$RDS_CFG" | sed -e "s/^# requirepass foobared/requirepass $(echo $REDIS_PASSWORD | sed -e 's/\//\\\//g')/")
[[ -z "$RDS_CFG" ]] && echo -e "${RED}Unable to authentication${NC}" && exit 1

echo "$RDS_CFG" > /etc/redis/redis.conf

echo -e "${COLOR}>>>>>>>>>  THE GENERATED SECURITY KEY IS: ${WHITE} ${REDIS_PASSWORD} ${NC}"

echo -e "${COLOR}>>>>>>>>>  ENABLE AND START REDIS SERVER ${NC}"
systemctl start redis && systemctl enable redis
sleep 2

echo -e "${COLOR}>>>>>>>>>  TESTING CONNECTION ${NC}"
if [[ "$(echo "auth $REDIS_PASSWORD" | /usr/bin/redis-cli)" == "OK" ]] ; then
	echo -e "${COLOR}>>>>>>>>>  AUTHENTICATED TO REDIS ${NC}"
	echo -e "${COLOR}>>>>>>>>>  REDIS SERVER SUCCESSFULLY INSTALLED AND STARTED  ${NC}"
	exit 0
else
	echo -e "${RED}>>>>>>>>>  REDIS SERVER AUTHENTICATION ERROR, CHECK SERVER IS RUNNING AND AUTHENTICATION WORKS MANUALLY ${NC}"
	exit 1
fi