Sold by: Lynxroute
Deployed on AWS
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This is a repackaged open source software product wherein additional charges apply for hardening, security configuration, and setup 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. This Lynxroute build is hardened and 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 open source software product wherein additional charges apply for hardening, security configuration, and setup 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
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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.
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.
Dimension | Cost/hour |
|---|---|
t3.large Recommended | $0.05 |
m6i.2xlarge | $0.05 |
m6i.large | $0.05 |
m6i.xlarge | $0.05 |
t3.medium | $0.05 |
Dimensions summary
You pay by the hour based on the EC2 instance size you choose to run this hardened stream processing cluster. All five options bill per hour of use, with no upfront commitment. The t3.medium and t3.large run on burstable instances, while the m6i.large, m6i.xlarge, and m6i.2xlarge run on general-purpose instances. Pricing scales with instance size: larger instances carry more vCPU and memory and a higher hourly rate. Pick the size that matches your workload. You can switch sizes by launching a different instance.
Top-of-mind questions for buyers
Every instance ships on a hardened Ubuntu 24.04 base. You get CIS Level 1 OS hardening, SSH and kernel hardening, a firewall, and intrusion prevention pre-configured. A software bill of materials and a conformance report are bundled inside. Unique credentials are generated at first boot, with no default secrets.
The hourly software charge meters running time only. A fully stopped instance does not accrue software charges. Stopped instances may still incur underlying AWS storage fees for the disk, but those are separate from this listing's hourly rate.
The t3.medium and t3.large are burstable instances. They hold a baseline CPU level and burst higher for short periods, which suits variable or lighter workloads. The m6i.large, m6i.xlarge, and m6i.2xlarge are general-purpose instances with steady CPU, better for sustained stream processing. Both bill per hour.
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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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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 2.3.0 r2
- Security: fixes CVE-2026-111497, a critical (CVSS 9.8) buffer overflow in the Brotli decompression library that lets a crafted compressed stream crash a process or execute code. Ships Ubuntu brotli 1.1.0-2ubuntu0.1 (USN-8956-1). Every earlier image of this product carries the vulnerable library; replace running instances or run: sudo apt-get update && sudo apt-get install --only-upgrade libbrotli1 brotli python3-brotli
- The application version is unchanged (Apache Flink 2.3.0); this is a security rebuild
- Rebuilt on the latest CIS Level 1 hardened Ubuntu 24.04 LTS base, picking up every operating-system security update published since the previous build
Additional details
Usage instructions
- Launch instance (t3.large recommended; t3.medium minimum)
- Open Security Group - allow TCP 443 and TCP 80 from your IP
- SSH: ssh -i key.pem ubuntu@<PUBLIC_IP>
- Read credentials: sudo cat /root/flink-credentials.txt
- 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
- 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
- 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:
AWS infrastructure support
AWS Support is a one-on-one, fast-response support channel that is staffed 24x7x365 with experienced and technical support engineers. The service helps customers of all sizes and technical abilities to successfully utilize the products and features provided by Amazon Web Services.
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