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From: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
Date: Mon, 18 Jul 2016 17:42:48 +0200
Subject: [PATCH] deploy: Delete old Fuel env if present

In order to clean up old partitioning and boot entries on target
nodes, before removing the Fuel Master, try ssh-ing into it and
removing all environments/nodes.

This is especially important for EFI systems, where old boot
entries are left behind without a proper env delete, leading to
target nodes failing to PXE boot on Fuel Master re-install.

This change assumes that:
- all Fuel Master information is unchanged between old and new
  deploy (fuel IP, password etc.);
- Fuel Master is up and running, in a sane state (target nodes
  are also online), when deploy starts;

Closes: ARMBAND-51

Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
---
 deploy/deploy.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/deploy/deploy.py b/deploy/deploy.py
index 48a53c3..184510f 100755
--- a/deploy/deploy.py
+++ b/deploy/deploy.py
@@ -110,6 +110,20 @@ class AutoDeploy(object):
         self.iso_file = new_iso
         self.install_iso()
 
+    def delete_old_fuel_env(self):
+        log('Delete old Fuel Master environments if present')
+        try:
+            old_dep = CloudDeploy(self.dea, self.dha, self.fuel_conf['ip'],
+                                  self.fuel_username, self.fuel_password,
+                                  self.dea_file, self.fuel_plugins_conf_dir,
+                                  WORK_DIR, self.no_health_check,
+                                  self.deploy_timeout,
+                                  self.no_deploy_environment, self.deploy_log)
+            with old_dep.ssh:
+                old_dep.check_previous_installation()
+        except Exception as e:
+            log('Could not delete old env: %s' % str(e))
+
     def install_iso(self):
         fuel = InstallFuelMaster(self.dea_file, self.dha_file,
                                  self.fuel_conf['ip'], self.fuel_username,
@@ -227,6 +241,7 @@ class AutoDeploy(object):
     def deploy(self):
         self.collect_fuel_info()
         if not self.no_fuel:
+            self.delete_old_fuel_env()
             self.setup_execution_environment()
             self.create_tmp_dir()
             self.install_fuel_master()