Add nginx.gracefulrestart

dcarley · dcarley · commit c8070e8db97c · 2014-08-08T14:58:34.000+01:00
This calls `nginx.gracefulstop` (which blocks until Nginx has finished
in-flight requests) and then calls `nginx.start` before moving onto the next
host.

I need this to rollout some Nginx config changes that aren't picked up by a
graceful reload (HUP). It can also be used to pick up OpenSSL lib upgrades.
diff --git a/nginx.py b/nginx.py
@@ -9,6 +9,12 @@ def gracefulstop(wait=True):
         # Poll for Nginx, until it's no longer running.
         run('while pgrep nginx >/dev/null; do echo "Waiting for Nginx to exit.."; sleep 1; done')
 
+@task
+def gracefulrestart():
+    """Gracefully shutdown and start Nginx (not reload)"""
+    gracefulstop()
+    start()
+
 @task
 def disable_vhost(vhost_filename):
     """Disable a vhost by removing its symlink from /etc/nginx/sites-enabled"""
