000_resolv-conf.patch

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Gbp-Pq: 000_resolv-conf.patch.

1 files changed, 20 insertions, 1 deletions

diff --git a/waagent b/waagent
index 6416140..79070ae 100644
--- a/waagent
+++ b/waagent
@@ -2262,7 +2262,26 @@ def Deprovision(force, deluser):
         Run("rm -f " + a + "/*")
 
     # Clear LibDir, remove nameserver and root bash history
-    for f in os.listdir(LibDir) + ["/etc/resolv.conf", "/root/.bash_history", "/var/log/waagent.log"]:
+    fileBlackList = [ "/root/.bash_history", "/var/log/waagent.log" ]
+
+    if IsUbuntu():
+        # Ubuntu uses resolv.conf by default, so removing /etc/resolv.conf will
+        # break resolvconf. Therefore, we check to see if resolvconf is in use,
+        # and if so, we remove the resolvconf artifacts.
+
+        if os.path.realpath('/etc/resolv.conf') != '/run/resolvconf/resolv.conf':
+            Log("resolvconf is not configured. Removing /etc/resolv.conf")
+            fileBlackList.append('/etc/resolv.conf')
+        else:
+            Log("resolvconf is enabled; leaving /etc/resolv.conf intact")
+            resolvConfD = '/etc/resolvconf/resolv.conf.d/'
+            fileBlackList.extend([resolvConfD + 'tail', resolvConfD + 'originial' ])
+    else:
+        fileBlackList.append(os.listdir(LibDir) + '/etc/resolv.conf')
+
+
+    # Clear LibDir, remove nameserver and root bash history
+    for f in os.listdir(LibDir) + fileBlackList:
         try:
             os.remove(f)
         except: