snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

tools/ci/production-upgrade

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+# Given a Zulip production environment that had been installed with a
+# previous version of Zulip, upgrade it to the commit being tested.
+# This takes as input the tarball generated by production-build.
+set -e
+set -x
+
+# Start the services that would be running on a working Zulip host;
+# since this is a container, these services are not started
+# automatically.
+
+# Start the postgresql service.
+sudo service postgresql start
+
+# Starting the rabbitmq-server
+epmd -daemon
+sudo service rabbitmq-server start
+
+# Start the supervisor
+sudo service supervisor start
+
+# Disable interactive prompts from apt.
+echo 'Dpkg::Options { "--force-confdef" "--force-confold" }' >/etc/apt/apt.conf.d/noninteractive
+export DEBIAN_FRONTEND=noninteractive
+
+# Zulip releases before 2.1.8/3.5/4.4 have a bug in their
+# `upgrade-zulip` scripts, resulting in them exiting with status 0
+# unconditionally. We work around that by running
+# scripts/lib/upgrade-zulip instead.
+UPGRADE_SCRIPT=/home/zulip/deployments/current/scripts/lib/upgrade-zulip
+
+# Execute the upgrade.
+sudo "$UPGRADE_SCRIPT" /tmp/zulip-server-test.tar.gz