ovsdb: Log when remote connections are deconfigured.

Recently I helped debug a scenario where ovsdb-server connected to a remote
manager, then ovs-vsctl deleted the remote manager and soon after re-added
it.  The log was difficult to interpret because it showed two successful
connection attempts to the same remote without showing a reason why the
connection was dropped in the first place.  Adding this log message would
make it clear that the configuration changed to remove that remote
connection in the meantime.

diff --git a/ovsdb/jsonrpc-server.c b/ovsdb/jsonrpc-server.c
index 1da1578..e999ada 100644 (file)
--- a/ovsdb/jsonrpc-server.c
+++ b/ovsdb/jsonrpc-server.c
@@ -141,6 +141,7 @@ ovsdb_jsonrpc_server_set_remotes(struct ovsdb_jsonrpc_server *svr,
 
     SHASH_FOR_EACH_SAFE (node, next, &svr->remotes) {
         if (!shash_find(new_remotes, node->name)) {
+            VLOG_INFO("%s: remote deconfigured", node->name);
             ovsdb_jsonrpc_server_del_remote(node);
         }
     }