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-rwxr-xr-xnova/network/linux_net.py9
1 files changed, 8 insertions, 1 deletions
diff --git a/nova/network/linux_net.py b/nova/network/linux_net.py
index 811395f9c..484320261 100755
--- a/nova/network/linux_net.py
+++ b/nova/network/linux_net.py
@@ -660,7 +660,14 @@ def update_dhcp_hostfile_with_text(dev, hosts_text):
def kill_dhcp(dev):
pid = _dnsmasq_pid_for(dev)
if pid:
- _execute('kill', '-9', pid, run_as_root=True)
+ # Check that the process exists and looks like a dnsmasq process
+ conffile = _dhcp_file(dev, 'conf')
+ out, _err = _execute('cat', '/proc/%d/cmdline' % pid,
+ check_exit_code=False)
+ if conffile.split('/')[-1] in out:
+ _execute('kill', '-9', pid, run_as_root=True)
+ else:
+ LOG.debug(_('Pid %d is stale, skip killing dnsmasq'), pid)
# NOTE(ja): Sending a HUP only reloads the hostfile, so any