Add a --node-ip argument so that one can specify which ip address a

specific instance of ctdbd should bind to. This helps when running a
"virtual" cluster on a single machine where all instcances bind to 
different alias interfaces.

If --node-ip is specified, then we will only try to bind to this ip 
address only. Othervise we fall back to the original method trying the
ip addresses in /etc/ctdb/nodes one by one until we find one we can bind 
to.

No variable in /etc/sysconfig/ctdb added since this parameter only makes 
sense in a virtual test/debug cluster.

(This used to be ctdb commit d96cb02c2c24f9eabbc53d3d38e90dea49cff3e0)

1 files changed, 17 insertions, 0 deletions

diff --git a/ctdb/server/ctdb_server.c b/ctdb/server/ctdb_server.c
index dddf90753bd..2a80798dd93 100644
--- a/ctdb/server/ctdb_server.c
+++ b/ctdb/server/ctdb_server.c
@@ -35,6 +35,23 @@ int ctdb_set_transport(struct ctdb_context *ctdb, const char *transport)
 }
 
 /*
+  Check whether an ip is a valid node ip
+  Returns the node id for this ip address or -1
+*/
+int ctdb_ip_to_nodeid(struct ctdb_context *ctdb, const char *nodeip)
+{
+	int nodeid;
+
+	for (nodeid=0;nodeid<ctdb->num_nodes;nodeid++) {
+		if (!strcmp(ctdb->nodes[nodeid]->address.address, nodeip)) {
+			return nodeid;
+		}
+	}
+
+	return -1;
+}
+
+/*
   choose the recovery lock file
 */
 int ctdb_set_recovery_lock_file(struct ctdb_context *ctdb, const char *file)