WALinuxAgent/SOURCES/wla-Implement-restart_if-fo...

49 lines
1.9 KiB
Diff

From ab69ae533c18db1f468e7433984b36159612c0d0 Mon Sep 17 00:00:00 2001
From: Mohammed Gamal <mgamal@redhat.com>
Date: Tue, 17 May 2022 10:50:59 +0200
Subject: [PATCH 2/2] Implement restart_if for RedHat OS
RH-Author: Mohamed Gamal Morsy <mmorsy@redhat.com>
RH-MergeRequest: 2: Fix if hangs (#2283)
RH-Commit: [2/2] ba8712ff724d5f3cd8bd0b19f5849c854f6c99ca
RH-Bugzilla: 2092753
RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
RH-Acked-by: Cathy Avery <cavery@redhat.com>
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2092753
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Mohammed Gamal <mgamal@redhat.com>
---
azurelinuxagent/common/osutil/redhat.py | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/azurelinuxagent/common/osutil/redhat.py b/azurelinuxagent/common/osutil/redhat.py
index 9759d113..840f7a1d 100644
--- a/azurelinuxagent/common/osutil/redhat.py
+++ b/azurelinuxagent/common/osutil/redhat.py
@@ -142,3 +142,20 @@ class RedhatOSUtil(Redhat6xOSUtil):
endpoint = self.get_endpoint_from_leases_path('/var/lib/NetworkManager/dhclient-*.lease')
return endpoint
+
+ def restart_if(self, ifname, retries=3, wait=5):
+ """
+ Restart an interface by bouncing the link.
+ """
+ retry_limit=retries+1
+ for attempt in range(1, retry_limit):
+ try:
+ shellutil.run_command(["ip", "link", "set", ifname, "down", "&&", "ip", "link", "set", ifname, "up"])
+
+ except shellutil.CommandError as cmd_err:
+ logger.warn("failed to restart {0}: return code {1}".format(ifname, cmd_err.returncode))
+ if attempt < retry_limit:
+ logger.info("retrying in {0} seconds".format(wait))
+ time.sleep(wait)
+ else:
+ logger.warn("exceeded restart retries")
--
2.31.1