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    Apache Flink - Hardened Stream Processing Cluster

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    Sold by: Lynxroute 
    Deployed on AWS
    Free Trial
    This product has charges associated with it for hardening, security configuration, and support. Apache Flink is a distributed engine for stateful stream and batch processing, run here as a single-node standalone session cluster - a JobManager plus one TaskManager on OpenJDK 17 - with its Web Dashboard ready to accept jobs. Unlike bare Flink AMIs that expose the Web UI on 0.0.0.0:8081 with no authentication and no TLS, leave the cluster RPC and blob ports reachable, and write working data onto a noexec /tmp, this Lynxroute build is ready out of the box: a unique Basic Auth password generated at first launch, an Nginx TLS reverse proxy on 443, the Web UI and all internal cluster ports bound to localhost only, working directories placed off the hardened /tmp, UFW firewall pre-configured, and a CIS Level 1 hardened Ubuntu 24.04 LTS base. Apache-2.0 license - fully auditable, no vendor lock-in.

    Overview

    This is a repackaged software product wherein additional charges apply for hardening, security configuration, and support.

    WHAT IS APACHE FLINK

    Apache Flink is an open-source framework and distributed engine for stateful computations over unbounded and bounded data streams. It runs on the JVM and is deployed here as a single-node standalone session cluster: one JobManager that schedules and coordinates work and one TaskManager that executes it, on OpenJDK 17. Flink provides event-time processing, exactly-once state consistency, checkpoints and savepoints for fault tolerance, windowing and timers, and the layered DataStream, Table and SQL APIs with pluggable source and sink connectors. This image stores checkpoints and savepoints on the local filesystem under /var/lib/flink and exposes the Flink Dashboard (Web UI) for submitting and monitoring jobs. Apache-2.0 license, no vendor lock-in. Running your own Flink keeps all job data and state inside your AWS account.

    WHAT THIS AMI ADDS

    Security hardening:

    • A unique Basic Auth password generated at first launch for the Nginx perimeter (the Flink Dashboard has no native authentication)
    • Nginx reverse proxy with TLS - the Flink Web UI proxied on port 443
    • The Web UI (8081) and all internal cluster ports (JobManager RPC 6123, blob 6124, TaskManager 6121/6122) bound to localhost only - Nginx is the only exposed door
    • JobManager and TaskManager run as non-root services with restricted systemd units
    • Working and temporary directories placed on dedicated storage, off the hardened noexec /tmp
    • UFW firewall - ports 22, 80, 443 only
    • fail2ban, AppArmor
    • CVE scan - every image is scanned for vulnerabilities before release

    OS hardening (CIS Level 1):

    • CIS Ubuntu 24.04 LTS Level 1 benchmark applied via ansible-lockdown
    • auditd, SSH hardening, Kernel hardening, IMDSv2 enforced

    Compliance artifacts:

    • SBOM - CycloneDX 1.6 at /etc/lynxroute/sbom.json
    • CIS Conformance Report at /etc/lynxroute/cis-report.html
    • CIS Tailored Profile at /usr/share/doc/lynxroute/CIS_TAILORED_PROFILE.md

    Highlights

    • Apache Flink security baked in: a unique Basic Auth password generated at first launch, an Nginx TLS reverse proxy on 443, and the Web Dashboard plus every internal cluster port (JobManager RPC, blob, TaskManager) bound to localhost only, with working directories kept off the hardened noexec /tmp.
    • CIS Level 1 hardened Ubuntu 24.04 LTS: auditd, fail2ban, AppArmor, SSH key-only, IMDSv2 enforced. CVE-scanned before every release. SBOM (CycloneDX) and CIS Conformance Report included.
    • Stateful stream and batch processing: event-time, exactly-once state, checkpoints and savepoints, and the DataStream, Table and SQL APIs. Apache-2.0 license - fully auditable, no vendor lock-in.

    Details

    Delivery method

    Delivery option
    64-bit (x86) Amazon Machine Image (AMI)

    Latest version

    Operating system
    Ubuntu 24.04

    Deployed on AWS
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    Pricing

    Free trial

    Try this product free for 5 days according to the free trial terms set by the vendor. Usage-based pricing is in effect for usage beyond the free trial terms. Your free trial gets automatically converted to a paid subscription when the trial ends, but may be canceled any time before that.

    Apache Flink - Hardened Stream Processing Cluster

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    Pricing is based on actual usage, with charges varying according to how much you consume. Subscriptions have no end date and may be canceled any time.
    Additional AWS infrastructure costs may apply. Use the AWS Pricing Calculator  to estimate your infrastructure costs.

    Usage costs (5)

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    Dimension
    Cost/hour
    t3.large
    Recommended
    $0.03
    t3.medium
    $0.02
    m6i.xlarge
    $0.05
    m6i.large
    $0.03
    m6i.2xlarge
    $0.07

    Vendor refund policy

    We do not offer refunds for this product. AWS infrastructure charges (EC2, EBS, data transfer) are billed separately by AWS and are not refundable by us.

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    Legal

    Vendor terms and conditions

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    Usage information

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    Delivery details

    64-bit (x86) Amazon Machine Image (AMI)

    Amazon Machine Image (AMI)

    An AMI is a virtual image that provides the information required to launch an instance. Amazon EC2 (Elastic Compute Cloud) instances are virtual servers on which you can run your applications and workloads, offering varying combinations of CPU, memory, storage, and networking resources. You can launch as many instances from as many different AMIs as you need.

    Version release notes

    Apache Flink 2.2.1 - Initial release (June 2026)

    • Apache Flink 2.2.1 on Ubuntu 24.04 LTS
    • Single-node standalone session cluster (JobManager + TaskManager) on OpenJDK 17
    • Flink Web UI (8081) and internal cluster ports (JobManager RPC 6123, blob 6124, TaskManager 6121/6122) bound to localhost only - Nginx is the only exposed door
    • Unique Basic Auth password generated at first launch for the Nginx TLS perimeter on 443
    • JobManager and TaskManager run as non-root services with restricted systemd units
    • Working and temporary directories placed off the hardened noexec /tmp
    • CIS Level 1 hardening applied (ansible-lockdown/UBUNTU24-CIS)
    • CVE-scanned before every release
    • UFW firewall pre-configured (ports 22, 80, 443 only)
    • fail2ban, auditd, AppArmor pre-configured
    • SBOM (CycloneDX 1.6) at /etc/lynxroute/sbom.json
    • CIS Conformance Report (OpenSCAP) at /etc/lynxroute/cis-report.html
    • IMDSv2 enforced

    Additional details

    Usage instructions

    1. Launch instance (t3.large recommended; t3.medium minimum)
    2. Open Security Group - allow TCP 443 and TCP 80 from your IP
    3. SSH: ssh -i key.pem ubuntu@<PUBLIC_IP>
    4. Read credentials: sudo cat /root/flink-credentials.txt
    5. Open https://<PUBLIC_IP> in your browser - accept the self-signed certificate warning, then sign in with the Basic Auth user admin and the generated password; the Apache Flink Dashboard loads
    6. Submit a sample job from the box: sudo -u flink /opt/flink/bin/flink run /opt/flink/examples/streaming/WordCount.jar - then watch it under Jobs > Completed in the Dashboard
    7. Submit your own jobs from the Dashboard "Submit New Job" page (upload a JAR) or with /opt/flink/bin/flink run

    The Flink Dashboard (Web UI) has no native authentication; the Nginx Basic Auth perimeter on 443 is the only access control. The Basic Auth password is generated uniquely at first launch. Credentials are saved to /root/flink-credentials.txt at first boot. The Web UI (8081) and all internal cluster ports bind to localhost only; checkpoints and savepoints are stored under /var/lib/flink. Tune cluster memory in /opt/flink/conf/config.yaml (jobmanager.memory.process.size and taskmanager.memory.process.size) for larger instances. Replace the self-signed TLS certificate with a CA-signed certificate (sudo certbot --nginx -d yourdomain.com) for production use.

    Resources

    Vendor resources

    Support

    Vendor support

    Visit us online: https://lynxroute.com/#contact 

    For Apache Flink documentation:

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