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fix(install): prevent MySQL credential mismatch on reinstall

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When the install script runs a second time (e.g., after a failed first
attempt), it generates new random database passwords and writes them to
compose.yml. However, MySQL only initializes credentials on first startup
when its data directory is empty. If /opt/project-nomad/mysql/ persists
from the previous attempt, MySQL skips initialization and keeps the old
passwords, causing "Access denied" errors for nomad_admin.

Fix: remove the MySQL data directory before generating new credentials
so MySQL reinitializes with the correct passwords.

Closes #404

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Chris Sherwood 2026-03-21 10:35:14 -07:00 committed by Jake Turner
parent 09c12e7574
commit a68d6ab593
1 changed files with 9 additions and 0 deletions
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9
install/install_nomad.sh
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@ -403,6 +403,15 @@ download_management_compose_file() {
local db_root_password=$(generateRandomPass)
local db_user_password=$(generateRandomPass)
# If MySQL data directory exists from a previous install attempt, remove it.
# MySQL only initializes credentials on first startup when the data dir is empty.
# If stale data exists, MySQL ignores the new passwords above and uses the old ones,
# causing "Access denied" errors when the admin container tries to connect.
if [[ -d "${NOMAD_DIR}/mysql" ]]; then
echo -e "${YELLOW}#${RESET} Removing existing MySQL data directory to ensure credentials match...\\n"
sudo rm -rf "${NOMAD_DIR}/mysql"
fi
# Inject dynamic env values into the compose file
echo -e "${YELLOW}#${RESET} Configuring docker-compose file env variables...\\n"
sed -i "s|URL=replaceme|URL=http://${local_ip_address}:8080|g" "$compose_file_path"