Apache Tomcat 11 on Ubuntu 24.04

## Apache Tomcat 11 on Ubuntu 24.04 by cloudimg

Apache Tomcat 11 — the latest major release of the canonical Java servlet container — built on Ubuntu 24.04 LTS noble for Microsoft Azure and maintained by cloudimg. Supports Jakarta EE 11 (jakarta.* namespace), Servlet 6.1, JSP 4.0, and EL 6.0.

Why Choose cloudimg?

* 24/7 Expert Support with guaranteed 24 hour response. Contact support@cloudimg.co.uk

* Production Ready from Launch Pre-configured, security-patched, validated

* Azure Native Integration Azure Linux Agent, cloud-init, Gen2 Hyper-V, TrustedLaunch

* Per VM Manager + Admin Passwords Every deployed VM rotates the manager + admin user passwords at first boot to fresh 32-char hex values

What is Included

* Apache Tomcat 11 (latest 11.0.x at build time, 11.0.21) from the official Apache tarball

* OpenJDK 21 JRE headless

* tomcat.service auto-starting on boot, running as tomcat:tomcat system user

* tomcat-firstboot.service generating per-VM manager + admin passwords

* HTTP connector on TCP 8080 bound to all interfaces; shutdown port 8005 on 127.0.0.1 only

* Manager web app at /manager/html (manager-gui + manager-script + manager-jmx + manager-status)

* Host Manager web app at /host-manager/html (admin-gui + admin-script)

* VNet allowlist patched into manager + host-manager META-INF/context.xml

* CATALINA_HOME=/opt/tomcat (NOT /mnt — Azure ephemeral resource disk lost across SIG capture)

* Sensible default heap (512M-1024M); customers tune CATALINA_OPTS for production

* Ubuntu 24.04 LTS base with latest security patches

* 24/7 cloudimg support with guaranteed 24 hour response SLA

Recommended Virtual Machine Sizes

* Standard_B2s (2 vCPU, 4 GB RAM) — dev/test, light Java apps

* Standard_D4s_v5 (4 vCPU, 16 GB RAM) — typical production servlet workload

* Standard_D8s_v5 (8 vCPU, 32 GB RAM) — high-traffic servlet apps with larger heaps