clusterDeployer: Run set_password in parallel.

During the deployment proces there is a step to set password
for all nodes that were created. This step was running in single
thread and could take up to 10 minutes from the whole deployment.
Make it run in parallel, this significantly shortens the time needed
down to ~1 minute.

Signed-off-by: Ales Musil <[email protected]>

Author: almusil

clusterDeployer.py

@@ -367,9 +367,8 @@ def create_masters(self) -> None:
         logger.info('updating /etc/hosts')
         self.update_etc_hosts()
 
-        logger.info("Setting password to for root to redhat")
-        for master in master_nodes:
-            master.set_password()
+        nodes_with_futures = [(n.config.name, executor.submit(n.set_password)) for n in master_nodes]
+        wait_futures("set root password to redhat", nodes_with_futures)
 
         self.update_dnsmasq()
 
@@ -440,10 +439,8 @@ def create_workers(self) -> None:
 
         self.wait_for_workers()
 
-        logger.info("Setting password to for root to redhat")
-        for h in hosts_with_workers:
-            for worker in h.k8s_worker_nodes:
-                worker.set_password()
+        nodes_with_futures = [(n.config.name, executor.submit(n.set_password)) for n in worker_nodes]
+        wait_futures("set root password to redhat", nodes_with_futures)
 
     def _wait_master_reboot(self, infra_env: str, node: ClusterNode) -> bool:
         def master_ready(ai: AssistedClientAutomation, node_name: str) -> bool:

clusterNode.py

@@ -60,10 +60,11 @@ def teardown(self) -> None:
     def ensure_reboot(self) -> bool:
         return True
 
-    def set_password(self, user: str = "root", password: str = "redhat") -> None:
+    def set_password(self, user: str = "root", password: str = "redhat") -> bool:
         rh = host.RemoteHost(self.ip())
         rh.ssh_connect("core")
         rh.run_or_die(f"echo {user}:{password} | sudo chpasswd")
+        return True
 
     def print_logs(self) -> None:
         rh = host.RemoteHost(self.ip())