Having duplicate nodeids in corosync.conf can play havoc with a cluster,
so (as suggested by someone on this list) here is some code to check
that all nodeids are unique.
It logs all non-unique nodeids to syslog, but only the last is reported
on the command-line to the user which should be enough to get them to
check further.
Signed-off-by: Christine Caulfield <[email protected]>
diff --git a/exec/totemconfig.c b/exec/totemconfig.c
index b678752..a0ad26c 100644
--- a/exec/totemconfig.c
+++ b/exec/totemconfig.c
@@ -481,6 +481,71 @@ static int get_cluster_mcast_addr (
return (err);
}
+static int check_for_duplicate_nodeids(
+ struct totem_config *totem_config,
+ const char **error_string)
+{
+ icmap_iter_t iter;
+ icmap_iter_t subiter;
+ const char *iter_key;
+ int res = 0;
+ int retval = 0;
+ char tmp_key[ICMAP_KEYNAME_MAXLEN];
+ unsigned int node_pos;
+ unsigned int node_pos1;
+ unsigned int nodeid;
+ unsigned int nodeid1;
+
+ iter = icmap_iter_init("nodelist.node.");
+ while ((iter_key = icmap_iter_next(iter, NULL, NULL)) != NULL) {
+ res = sscanf(iter_key, "nodelist.node.%u.%s", &node_pos, tmp_key);
+ if (res != 2) {
+ continue;
+ }
+
+ if (strcmp(tmp_key, "ring0_addr") != 0) {
+ continue;
+ }
+
+ snprintf(tmp_key, ICMAP_KEYNAME_MAXLEN, "nodelist.node.%u.nodeid", node_pos);
+ if (icmap_get_uint32(tmp_key, &nodeid) != CS_OK) {
+ continue;
+ }
+
+ node_pos1 = 0;
+ subiter = icmap_iter_init("nodelist.node.");
+ while ((iter_key = icmap_iter_next(subiter, NULL, NULL)) != NULL && node_pos1 < node_pos) {
+ res = sscanf(iter_key, "nodelist.node.%u.%s", &node_pos1, tmp_key);
+ if (res != 2) {
+ continue;
+ }
+
+ if (strcmp(tmp_key, "ring0_addr") != 0) {
+ continue;
+ }
+
+ snprintf(tmp_key, ICMAP_KEYNAME_MAXLEN, "nodelist.node.%u.nodeid", node_pos1);
+ if (icmap_get_uint32(tmp_key, &nodeid1) != CS_OK) {
+ continue;
+ }
+ if (nodeid == nodeid1) {
+ retval = -1;
+
+ /* This makes sure we log all duplicate nodeids, the error system only allows us to report 1 */
+ snprintf (error_string_response, sizeof(error_string_response),
+ "nodeid %d appears twice in corosync.conf", nodeid);
+ log_printf (LOGSYS_LEVEL_ERROR, error_string_response);
+ *error_string = error_string_response;
+ break;
+ }
+ }
+ icmap_iter_finalize(subiter);
+ }
+ icmap_iter_finalize(iter);
+ return retval;
+}
+
+
static int find_local_node_in_nodelist(struct totem_config *totem_config)
{
icmap_iter_t iter;
@@ -1236,6 +1301,10 @@ int totem_config_validate (
return (-1);
}
+ if (check_for_duplicate_nodeids(totem_config, error_string) == -1) {
+ return (-1);
+ }
+
/*
* RRP values validation
*/
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