DevOps Classroom notes 30/Jul/2026

Step nexus artifactory

• download comunity version

• 2 vCPUs and 4 GiB of memory

• 50 GB

## run in docker 
curl -fsSL https://get.docker.com -o get-docker.sh
sudo sh ./get-docker.sh

docker run -d -p 8081:8081 --name nexus sonatype/nexus3

#!/bin/bash

set -e

NEXUS_VERSION="3.90.1-01"
NEXUS_USER="nexus"
NEXUS_HOME="/opt/nexus"
NEXUS_DATA="/opt/sonatype-work"
NEXUS_TAR="nexus-${NEXUS_VERSION}-linux-x86_64.tar.gz"
DOWNLOAD_URL="https://cdn.download.sonatype.com/repository/downloads-prod-group/3/${NEXUS_TAR}"

echo "=== Nexus Installation ==="

# Install packages
apt update -y
apt install -y openjdk-25-jdk wget tar curl


# Create user
if ! id "$NEXUS_USER" >/dev/null 2>&1; then
    echo "Creating nexus user..."
    useradd -m -s /bin/bash "$NEXUS_USER"
else
    echo "Nexus user already exists"
fi


# Download Nexus only if missing
cd /opt

if [ ! -f "$NEXUS_TAR" ]; then
    echo "Downloading Nexus..."
    wget "$DOWNLOAD_URL"
else
    echo "Nexus archive already exists"
fi


# Extract only if installation missing
if [ ! -d "$NEXUS_HOME" ]; then

    echo "Extracting Nexus..."

    tar -xzf "$NEXUS_TAR"

    mv "nexus-${NEXUS_VERSION}" "$NEXUS_HOME"

else
    echo "Nexus installation already exists"
fi


# Create data directory
mkdir -p "$NEXUS_DATA"


# Permissions
chown -R "$NEXUS_USER:$NEXUS_USER" "$NEXUS_HOME"
chown -R "$NEXUS_USER:$NEXUS_USER" "$NEXUS_DATA"


# Configure Nexus user
echo "run_as_user=\"$NEXUS_USER\"" > "$NEXUS_HOME/bin/nexus.rc"


# Create service if missing
if [ ! -f /etc/systemd/system/nexus.service ]; then

cat >/etc/systemd/system/nexus.service <<EOF
[Unit]
Description=Nexus Repository Manager
After=network.target

[Service]
Type=forking
User=nexus
LimitNOFILE=65536
ExecStart=/opt/nexus/bin/nexus start
ExecStop=/opt/nexus/bin/nexus stop
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF

fi


# Start service
systemctl daemon-reload
systemctl enable nexus

systemctl restart nexus


echo "Waiting for Nexus..."
sleep 60


systemctl status nexus --no-pager


echo ""
echo "Nexus URL:"
echo "http://<server-ip>:8081"

echo ""
echo "Admin password:"
echo "cat /opt/sonatype-work/nexus3/admin.password"

# docker login
docker login mcd.jfrog.io
docker login nexus.demo.com
docker login 54.172.110.146:8081

enable http login in docker nexus

# /etc/docker/daemon.json
{
  "insecure-registries" : ["my-registry.local:5000", "ipaddress:8081"]  
}

docker login ipaddress:8081

docker pull alpine:latest
docker tag alpine:latest 54.172.110.146:8081/qt-dev-dcoker/base_image/alpine:latest
docker push 54.172.110.146:8081/qt-dev-dcoker/base_image/alpine:latest