Conjur

Overview

CyberArk Conjur is an open-source secrets management platform designed for modern cloud-native and containerized environments. It provides centralized control over sensitive credentials—database passwords, API keys, tokens, certificates—with powerful access controls based on machine identity and role-based access control (RBAC).

Conjur integrates seamlessly with Kubernetes, Docker, Ansible, Terraform, Jenkins, and other DevOps tools. It uses policy-as-code for flexible permission management and REST API for programmatic access, making it ideal for CI/CD pipelines and infrastructure automation.

GitHub: cyberark/conjur
License: LGPL v3
Container-Ready: Kubernetes, Docker, Docker Compose

Installation

Prerequisites

Docker or Docker Compose
PostgreSQL 10+ (for persistence)
OpenSSL (for certificate generation)

Quick Start with Docker Compose

# docker-compose.yml
version: '3.8'

services:
  postgres:
    image: postgres:15-alpine
    environment:
      POSTGRES_DB: conjur
      POSTGRES_PASSWORD: pg_password
    volumes:
      - postgres_data:/var/lib/postgresql/data

  conjur:
    image: cyberark/conjur:latest
    command: server
    environment:
      CONJUR_DATA_KEY: ${CONJUR_DATA_KEY}
      RAILS_ENV: production
      DATABASE_URL: postgresql://postgres:pg_password@postgres/conjur
    ports:
      - "8080:80"
      - "8443:443"
    depends_on:
      - postgres
    volumes:
      - ./config:/etc/conjur/config
      - ./certificates:/etc/conjur/ssl

volumes:
  postgres_data:

Kubernetes Deployment

# Add Conjur Helm repository
helm repo add conjur https://cyberark.github.io/conjur-helm
helm repo update

# Create namespace
kubectl create namespace conjur

# Install Conjur
helm install conjur conjur/conjur \
  --namespace conjur \
  --set dataKey=$(openssl rand -base64 32) \
  --set postgresql.postgresPassword=$(openssl rand -base64 32)

# Verify deployment
kubectl get pods -n conjur
kubectl get svc -n conjur

Docker Installation

# Generate data key (used to encrypt secrets)
export CONJUR_DATA_KEY=$(openssl rand -base64 32)

# Run Conjur container
docker run -d \
  --name conjur \
  -p 8080:80 \
  -p 8443:443 \
  -e CONJUR_DATA_KEY=$CONJUR_DATA_KEY \
  -e RAILS_ENV=production \
  cyberark/conjur:latest server

# Initialize Conjur
docker exec conjur conjur db migrate

From Source

# Clone repository
git clone https://github.com/cyberark/conjur.git
cd conjur

# Install dependencies
bundle install

# Set up database
bundle exec rails db:create
bundle exec rails db:migrate

# Start development server
bundle exec rails s

Initial Configuration

Generate API Key

# Initialize Conjur (creates admin user)
docker exec conjur conjur db migrate
docker exec conjur conjur db seed

# Get admin credentials
docker exec conjur conjur bin/conjur account create

Create Organization Account

# Via API
curl -X POST http://localhost:8080/api/v5/accounts \
  -H "Content-Type: application/json" \
  -d '{
    "account": "production",
    "user_id": "admin"
  }'

# Response includes API key
{
  "created_at": "2024-01-15T10:30:00Z",
  "user_id": "admin",
  "api_key": "3zf8x2p9kq7w5m3n6r4j8y2l"
}

Core Commands

Command	Purpose	Example
`conjur account create`	Create new account	`conjur account create mycompany`
`conjur user create`	Create user identity	`conjur user create appserver`
`conjur secret set`	Store secret value	`conjur secret set db/password "secret123"`
`conjur secret get`	Retrieve secret	`conjur secret get db/password`
`conjur policy load`	Load RBAC policy	`conjur policy load root policy.yml`
`conjur policy append`	Append to policy	`conjur policy append root rules.yml`
`conjur host create`	Create machine identity	`conjur host create app/production/server1`
`conjur host rotate-api-key`	Rotate host credentials	`conjur host rotate-api-key app/production/server1`
`conjur check-privilege`	Verify permissions	`conjur check-privilege execute app/secret`

CLI Setup

Install Conjur CLI

# macOS
brew install conjur-cli

# Linux
curl https://releases.conjur.org/conjur-cli/install.sh | bash

# Docker
docker run --rm -it cyberark/conjur-cli:latest conjur --help

Authenticate with CLI

# Login to Conjur
export CONJUR_APPLIANCE_URL=http://localhost:8080
export CONJUR_ACCOUNT=production
export CONJUR_AUTHN_TOKEN_FILE=~/.conjur/token

conjur authn login -u admin
# Enter API key when prompted

# Verify authentication
conjur authn status

Configure Conjur Proxy

# Via CLI config
conjur config init \
  --url http://localhost:8080 \
  --account production

# Stores config in ~/.conjurrc
# Contents:
# ---
# appliance_url: http://localhost:8080
# account: production
# plugins_path: ~/.conjur/plugins

Secret Management

Store Secrets

# Simple secret
conjur secret set database/password "MyP@ssw0rd123"

# Multi-line secret
conjur secret set tls/certificate @certificate.pem

# API call to store secret
curl -X POST http://localhost:8080/api/v5/secrets?variable_id=database/password \
  -H "Authorization: Token token=\"$CONJUR_TOKEN\"" \
  --data-urlencode 'value=MySecurePassword'

Retrieve Secrets

# Via CLI
conjur secret get database/password

# Via API
curl -H "Authorization: Token token=\"$CONJUR_TOKEN\"" \
  http://localhost:8080/api/v5/secrets?variable_id=database/password

# Response
MyP@ssw0rd123

Audit Secret Access

# View secret access logs
conjur audit-role \
  --role-id=production/app/webserver \
  --verbose

# Via API
curl -H "Authorization: Token token=\"$CONJUR_TOKEN\"" \
  http://localhost:8080/api/v5/audit/events \
  ?resource_filter=database/password

Policy-as-Code (RBAC)

Policy Structure

# policy.yml
---
- !policy
  id: production
  body:
    # Define secret variable
    - !variable
      id: database/password
      description: Production database password
    
    # Define secret variable
    - !variable
      id: api/key
      description: External API key
    
    # Define role/group
    - !role
      id: app/webserver
      description: Web server application
    
    # Define permissions
    - !permit
      role: !role app/webserver
      privilege: [read, execute]
      resource: !variable database/password
    
    # Host identity for automation
    - !host
      id: app/automation/jenkins
      description: Jenkins CI/CD server
    
    # Grant permissions to host
    - !permit
      role: !host app/automation/jenkins
      privilege: [read, execute]
      resource: !variable api/key

Load Policy

# Load policy from file
conjur policy load root policy.yml

# Load policy from stdin
cat policy.yml | conjur policy load root

# API call
curl -X POST http://localhost:8080/api/v5/policies/production/policy \
  -H "Authorization: Token token=\"$CONJUR_TOKEN\"" \
  -H "Content-Type: application/x-yaml" \
  --data @policy.yml

Update Policy

# Append new rules (doesn't remove existing)
conjur policy append production new-rules.yml

# Replace entire policy (dangerous!)
conjur policy replace production complete-policy.yml

# Delete policy section
conjur policy delete production

Policy Examples

Database Access Policy

---
- !policy
  id: database
  body:
    - !variable
      id: prod/postgres/password
    
    - !variable
      id: prod/postgres/connection-string
    
    - !role
      id: app/postgres-reader
    
    - !permit
      role: !role app/postgres-reader
      privilege: [read, execute]
      resource: !variable prod/postgres/password
    
    - !permit
      role: !role app/postgres-reader
      privilege: [read, execute]
      resource: !variable prod/postgres/connection-string

Multi-Environment Policy

---
- !policy
  id: environments
  body:
    - !policy
      id: development
      body:
        - !variable database/password
        - !variable api/key
    
    - !policy
      id: staging
      body:
        - !variable database/password
        - !variable api/key
    
    - !policy
      id: production
      body:
        - !variable database/password
        - !variable api/key

Integration with Tools

Kubernetes Integration

Using Conjur with Kubernetes RBAC

# kubernetes-policy.yml
---
- !policy
  id: kubernetes
  body:
    - !variable
      id: k8s/namespace/default/secret
    
    - !host
      id: app/k8s/default/my-app
      annotations:
        authn-k8s/namespace: default
        authn-k8s/service-account: my-app
    
    - !permit
      role: !host app/k8s/default/my-app
      privilege: [read, execute]
      resource: !variable k8s/namespace/default/secret

Pod with Conjur Sidecar

apiVersion: v1
kind: Pod
metadata:
  name: app-with-conjur
  namespace: default
spec:
  serviceAccountName: my-app
  
  containers:
  - name: app
    image: myapp:latest
    env:
    - name: CONJUR_APPLIANCE_URL
      value: "http://conjur.conjur.svc:80"
    - name: CONJUR_ACCOUNT
      value: "production"
    - name: CONJUR_AUTHN_LOGIN
      value: "host/app/k8s/default/my-app"
    - name: MY_DB_PASSWORD
      valueFrom:
        secretKeyRef:
          name: injected-secret
          key: database-password
  
  - name: conjur-agent
    image: cyberark/conjur-authn-k8s-client:latest
    env:
    - name: CONJUR_APPLIANCE_URL
      value: "http://conjur.conjur.svc:80"
    - name: CONJUR_ACCOUNT
      value: "production"
    volumeMounts:
    - name: secret-volume
      mountPath: /shared
  
  volumes:
  - name: secret-volume
    emptyDir:
      medium: Memory

Docker Integration

Docker Compose with Conjur

version: '3.8'

services:
  app:
    image: myapp:latest
    environment:
      CONJUR_APPLIANCE_URL: "http://conjur:80"
      CONJUR_ACCOUNT: "production"
      CONJUR_AUTHN_LOGIN: "host/app/docker/web"
    depends_on:
      - conjur
    command: sh -c "source /conjur-init.sh && npm start"
    volumes:
      - ./conjur-init.sh:/conjur-init.sh

conjur:
  image: cyberark/conjur:latest
  environment:
    CONJUR_DATA_KEY: ${CONJUR_DATA_KEY}
  volumes:
    - conjur_data:/opt/conjur/data

Terraform Integration

# Configure Conjur provider
terraform {
  required_providers {
    conjur = {
      source = "cyberark/conjur"
    }
  }
}

provider "conjur" {
  appliance_url    = "http://localhost:8080"
  account          = "production"
  login_id         = "terraform@conjur"
  api_key          = var.conjur_api_key
}

# Retrieve secret from Conjur
data "conjur_secret" "db_password" {
  name = "database/password"
}

# Use secret in resource
resource "aws_db_instance" "example" {
  master_password = data.conjur_secret.db_password.value
}

Ansible Integration

---
- name: Deploy application with secrets from Conjur
  hosts: webservers
  
  pre_tasks:
    - name: Retrieve database password from Conjur
      community.general.conjur_variable:
        name: database/password
        identity: ansible@conjur
        api_key: "{{ conjur_api_key }}"
        appliance_url: "{{ conjur_url }}"
      register: db_password
      no_log: true
  
  tasks:
    - name: Deploy with retrieved secret
      template:
        src: app.conf.j2
        dest: /etc/app/config.conf
      vars:
        database_password: "{{ db_password.value }}"

Jenkins Integration

pipeline {
    agent any
    
    environment {
        CONJUR_APPLIANCE_URL = 'http://conjur:80'
        CONJUR_ACCOUNT = 'production'
        CONJUR_AUTHN_LOGIN = credentials('jenkins-conjur-login')
        CONJUR_AUTHN_API_KEY = credentials('jenkins-conjur-api-key')
    }
    
    stages {
        stage('Deploy') {
            steps {
                script {
                    withEnv(["DB_PASSWORD=${sh(
                        script: '''curl -X GET \\
                          -H "Authorization: Token token=\\"$CONJUR_TOKEN\\"" \\
                          $CONJUR_APPLIANCE_URL/api/v5/secrets?variable_id=database/password | base64 -d
                        ''',
                        returnStdout: true
                    ).trim()}"]) {
                        sh 'deploy.sh'
                    }
                }
            }
        }
    }
}

Advanced Features

Rotation Policies

# rotation-policy.yml
---
- !policy
  id: rotation
  body:
    - !variable
      id: database/password
    
    # Schedule rotation
    - !secret
      id: database/rotation-schedule
      value: "0 2 * * 0"  # Every Sunday at 2 AM

Custom Authentication

# LDAP authentication
conjur authn ldap login -u username

# OIDC authentication
conjur authn oidc login -u username

# API key rotation
conjur host rotate-api-key app/automation/jenkins

Audit and Compliance

# View all audit events
conjur audit-events \
  --resource-filter "variable" \
  --timestamp-from "2024-01-01T00:00:00Z"

# Export audit logs
curl -H "Authorization: Token token=\"$CONJUR_TOKEN\"" \
  "http://localhost:8080/api/v5/audit/resources" \
  > audit-report.json

# Create compliance report
conjur audit-summary --format=json > compliance-report.json

Performance & Scalability

Connection Pooling

# config/secrets.yml
production:
  database:
    adapter: postgresql
    pool: 25
    max_connections: 100
    timeout: 5000

Caching Secrets

# Use local cache in applications
# Note: Cache should be short-lived for sensitive data
export CONJUR_SECRET_CACHE_TTL=300  # 5 minutes

Troubleshooting

Authentication Issues

# Check Conjur connectivity
curl -v http://localhost:8080/health

# Verify API key
conjur authn login -u admin --password $API_KEY

# Check authentication logs
docker logs conjur 2>&1 | grep -i auth

Policy Issues

# Validate policy before loading
conjur policy validate policy.yml

# Check current policy
conjur policy show production

# Check user permissions
conjur check-privilege execute database/password

Database Issues

# Check database status
docker exec conjur-postgres psql -U postgres -c "\l"

# Verify database connectivity
curl http://localhost:8080/api/v5/health

# Check database logs
docker logs conjur-postgres

Best Practices

Secret Management

Rotate credentials regularly - especially database passwords
Use strong API keys - minimum 32 characters
Restrict secret access - principle of least privilege
Audit access - monitor all secret retrievals
Use machine identities - avoid shared credentials

Policy Management

# Good: Granular policies
- !policy
  id: services/web
  body:
    - !host id: web-app-01
    - !host id: web-app-02
    - !variable id: database/password

# Bad: Overly permissive
- !policy
  id: services
  body:
    - !permit
      role: !policy services
      privilege: [read, execute]
      resource: !policy services

Infrastructure

High availability - Deploy multiple Conjur instances
Regular backups - Backup PostgreSQL database
TLS encryption - Use HTTPS in production
Network segmentation - Restrict Conjur access by network

Resources

GitHub Repository: https://github.com/cyberark/conjur
Official Documentation: https://docs.cyberark.com/conjur
Helm Charts: https://github.com/cyberark/conjur-helm
Community Forum: https://discuss.cyberark.com/

HashiCorp Vault (alternative)
AWS Secrets Manager (cloud-specific)
Kubernetes Secrets (basic)
1Password Business (commercial)

Conjur

Overview

Installation

Prerequisites

Quick Start with Docker Compose

Kubernetes Deployment

Docker Installation

From Source

Initial Configuration

Generate API Key

Create Organization Account

Core Commands

CLI Setup

Install Conjur CLI

Authenticate with CLI

Configure Conjur Proxy

Secret Management

Store Secrets

Retrieve Secrets

Audit Secret Access

Policy-as-Code (RBAC)

Policy Structure

Load Policy

Update Policy

Policy Examples

Database Access Policy

Multi-Environment Policy

Integration with Tools

Kubernetes Integration

Using Conjur with Kubernetes RBAC

Pod with Conjur Sidecar

Docker Integration

Docker Compose with Conjur

Terraform Integration

Ansible Integration

Jenkins Integration

Advanced Features

Rotation Policies

Custom Authentication

Audit and Compliance

Performance & Scalability

Connection Pooling

Caching Secrets

Troubleshooting

Authentication Issues

Policy Issues

Database Issues

Best Practices

Secret Management

Policy Management

Infrastructure

Resources

Related Tools