diff --git a/site-docs/docs/cli-reference.md b/site-docs/docs/cli-reference.md
index fe7ce3f..09d7beb 100644
--- a/site-docs/docs/cli-reference.md
+++ b/site-docs/docs/cli-reference.md
@@ -60,8 +60,8 @@ $ deploy configure [OPTIONS] INSTANCE_NAME [SSH_HOST] [REPO_URL]
 * `--repo-branch TEXT`: Git branch to clone and track (defaults to the repository's default branch).
 * `--recreate / --no-recreate`: Re-create existing artifacts (venv, odoo-config, systemd unit) instead of skipping them.  \[default: no-recreate\]
 * `--watch`: Stream service logs with journalctl after a successful configure. Also merge with odoo and click-odoo-update logs if applicable.
-* `--steps TEXT`: Comma-separated steps to run, or 'all'. Available: dir, pg, gitaggregate, venv, config, unit.  \[default: all\]
-* `--except TEXT`: Comma-separated steps to skip. Available: dir, pg, gitaggregate, venv, config, unit.
+* `--steps TEXT`: Comma-separated steps to run, or 'all'. Available: dir, pg, gitaggregate, venv, config, env, unit.  \[default: all\]
+* `--except TEXT`: Comma-separated steps to skip. Available: dir, pg, gitaggregate, venv, config, env, unit.
 * `--dry-run`: Go through all steps without running any writing/destructive commands.
 * `--help`: Show this message and exit.
 
diff --git a/site-docs/docs/configuration.md b/site-docs/docs/configuration.md
index 34e83da..72bcea1 100644
--- a/site-docs/docs/configuration.md
+++ b/site-docs/docs/configuration.md
@@ -41,6 +41,17 @@ odoo-myproject-production:
     - myproject_staging
     - myproject_integration
 
+  # Odoo config overrides — written to config/odoo.conf by `configure`
+  config:
+    workers: 4
+    limit_time_cpu: 600
+
+  # Environment variables — written to config/server.env by `configure`.
+  # Merged over the built-in thread-limit defaults (the value here wins).
+  env:
+    ODOO_SESSION_REDIS: 1
+    ODOO_SESSION_REDIS_HOST: localhost
+
   # python / service only
   exec_start: myapp.main:app              # module path for python; verbatim for service
   build: npm ci && npm run build          # service only
@@ -74,6 +85,8 @@ odoo-myproject-production:
 | `db` | string or list of string | `update` | Target database name (Odoo only). Can be a list for multiple names. |
 | `exec_start` | string | `configure` | Entry point for python/service systemd unit. |
 | `build` | string | `configure`, `update` | Build command for `service` type. |
+| `config` | mapping | `configure` | Odoo config overrides written to `config/odoo.conf` (Odoo only). |
+| `env` | mapping | `configure` | Environment variables written to `config/server.env`, merged over the built-in thread-limit defaults (Odoo only). |
 | `hooks` | mapping | `update` | Lifecycle hooks — see [Hooks](hooks.md). |
 
 ## Multiple instances
diff --git a/tests/test_configure_server_env.py b/tests/test_configure_server_env.py
new file mode 100644
index 0000000..c31c374
--- /dev/null
+++ b/tests/test_configure_server_env.py
@@ -0,0 +1,69 @@
+from __future__ import annotations
+
+from unittest.mock import MagicMock, patch
+
+import pytest
+from typer.testing import CliRunner
+
+from trobz_deploy.cli import app
+from trobz_deploy.command.configure import _render_server_env
+from trobz_deploy.utils.executor import ExecutorError
+
+
+@pytest.fixture
+def runner():
+    return CliRunner()
+
+
+def test_render_server_env_emits_key_value_lines():
+    rendered = _render_server_env({"A": 1, "B": "x"})
+    assert rendered == "A=1\nB=x\n"
+
+
+def _executor_mock(*, env_exists: bool):
+    """Executor mock where config/server.env may or may not already exist."""
+    mock = MagicMock()
+    mock.capture.side_effect = lambda cmd, cwd=None, dry_run=False: "/home/deploy" if cmd == "echo $HOME" else ""
+
+    def run_side_effect(cmd, cwd=None, check=True, dry_run=False):
+        if not env_exists and cmd.startswith("test -f") and cmd.endswith("server.env"):
+            msg = "not found"
+            raise ExecutorError(msg)
+        return ""
+
+    mock.run.side_effect = run_side_effect
+    return mock
+
+
+def _invoke(runner, cfg, *, env_exists):
+    with (
+        patch("trobz_deploy.command.configure.Executor") as MockExecutor,
+        patch("trobz_deploy.command.configure.load_config", return_value=cfg),
+    ):
+        mock_exec = _executor_mock(env_exists=env_exists)
+        MockExecutor.return_value = mock_exec
+        result = runner.invoke(
+            app,
+            ["configure", "odoo-myapp-staging", "--type", "odoo", "--steps", "env"],
+        )
+        return result, mock_exec
+
+
+def test_server_env_writes_defaults_plus_overrides(runner):
+    cfg = {"version": "17.0", "env": {"ODOO_SESSION_REDIS": 1, "OMP_NUM_THREADS": 4}}
+    result, mock_exec = _invoke(runner, cfg, env_exists=False)
+
+    assert result.exit_code == 0
+    written = mock_exec.write_file.call_args.args[0]
+    assert "OPENBLAS_NUM_THREADS=1\n" in written  # default kept
+    assert "ODOO_SESSION_REDIS=1\n" in written  # extra env added
+    assert "OMP_NUM_THREADS=4\n" in written  # user value wins over default
+    assert "OMP_NUM_THREADS=1\n" not in written
+
+
+def test_server_env_skips_when_exists_without_recreate(runner):
+    result, mock_exec = _invoke(runner, {"version": "17.0"}, env_exists=True)
+
+    assert result.exit_code == 0
+    assert "server.env already exists" in result.output
+    mock_exec.write_file.assert_not_called()
diff --git a/tests/test_configure_steps.py b/tests/test_configure_steps.py
index 425a6fb..27cc304 100644
--- a/tests/test_configure_steps.py
+++ b/tests/test_configure_steps.py
@@ -169,7 +169,10 @@ def test_step_all_runs_every_step_for_odoo(runner):
     assert any("gitaggregate" in cmd for cmd in commands)
     assert any("odoo-venv create" in cmd for cmd in commands)
     assert any("odoo-config create --version 17.0" in cmd for cmd in commands)
-    mock_exec.write_file.assert_called_once()
+    # Two file writes: config/server.env and the systemd unit.
+    written = [call.args[0] for call in mock_exec.write_file.call_args_list]
+    assert mock_exec.write_file.call_count == 2
+    assert any("OMP_NUM_THREADS=1" in content for content in written)
     assert any("systemctl --user enable --now" in cmd for cmd in commands)
 
 
diff --git a/trobz_deploy/command/configure.py b/trobz_deploy/command/configure.py
index 74313e7..85c5849 100644
--- a/trobz_deploy/command/configure.py
+++ b/trobz_deploy/command/configure.py
@@ -59,11 +59,27 @@ def _ensure_postgres_user(executor: Executor, instance_name: str, dry_run: bool
     "gitaggregate": "Run gitaggregate if needed",
     "venv": "Creating the venv",
     "config": "Generating Odoo config",
+    "env": "Generating server.env",
     "unit": "Installing systemd unit",
 }
 
 ODOO_CONFIG_FILENAME = "odoo.conf"
 
+# Default env vars written to config/server.env for every odoo instance.
+# Single-thread the BLAS/OpenMP backends so workers don't oversubscribe cores.
+DEFAULT_SERVER_ENV: dict[str, Any] = {
+    "OMP_NUM_THREADS": 1,
+    "OPENBLAS_NUM_THREADS": 1,
+    "NUMEXPR_NUM_THREADS": 1,
+    "MKL_NUM_THREADS": 1,
+}
+
+
+def _render_server_env(env: dict[str, Any]) -> str:
+    """Render an ``env`` dict as ``KEY=value`` lines for config/server.env."""
+    return "".join(f"{key}={value}\n" for key, value in env.items())
+
+
 # Odoo instance types that map to an odoo-config --preset (see odoo-config overlay.toml).
 # The other types (demo, hotfix, test, training) carry no preset.
 INSTANCE_PRESETS = ("production", "staging", "integration")
@@ -317,7 +333,35 @@ def _run_step(slug: str) -> bool:
                 fg="yellow",
             )
 
-    # Step 6: Install systemd unit
+    # Step 6: Generate config/server.env — default thread limits, enriched by deploy.yml `env`.
+    if eff_type == "odoo" and _run_step("env"):
+        conf_dir = f"{instance_path}/config"
+        env_path = f"{conf_dir}/server.env"
+        env_exists = _file_exists(executor, env_path)
+
+        if not env_exists or recreate:
+            typer.secho(f"\n{CONFIGURE_STEPS['env']}…", fg="green")
+            server_env = {**DEFAULT_SERVER_ENV, **(opts.get("env") or {})}
+
+            try:
+                executor.run(f"mkdir -p {conf_dir}", dry_run=dry_run)
+
+                if env_exists:
+                    executor.run(f"mv {env_path} {env_path}.bak", dry_run=dry_run)
+
+                executor.write_file(_render_server_env(server_env), env_path, dry_run=dry_run)
+
+            except ExecutorError as exc:
+                typer.echo(typer.style(str(exc), fg="red"), err=True)
+                raise typer.Exit(code=1) from exc
+
+        else:
+            typer.secho(
+                "\nserver.env already exists. Use --recreate to regenerate.",
+                fg="yellow",
+            )
+
+    # Step 7: Install systemd unit
     if _run_step("unit"):
         unit_dir = "$HOME/.config/systemd/user"
         unit_path = f"{unit_dir}/{instance_name}.service"