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diff --git a/daemons/controld/controld_membership.c b/daemons/controld/controld_membership.c
index c704d4410d..af526981c9 100644
--- a/daemons/controld/controld_membership.c
+++ b/daemons/controld/controld_membership.c
@@ -1,477 +1,478 @@
/*
* Copyright 2004-2025 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU General Public License version 2
* or later (GPLv2+) WITHOUT ANY WARRANTY.
*/
/* put these first so that uuid_t is defined without conflicts */
#include <crm_internal.h>
#include <stdint.h> // uint32_t
#include <string.h>
#include <crm/crm.h>
#include <crm/common/xml.h>
#include <crm/common/xml_internal.h>
#include <crm/cluster/internal.h>
#include <pacemaker-controld.h>
void post_cache_update(int instance);
extern gboolean check_join_state(enum crmd_fsa_state cur_state, const char *source);
static void
reap_dead_nodes(gpointer key, gpointer value, gpointer user_data)
{
pcmk__node_status_t *node = value;
if (pcmk__cluster_is_node_active(node)) {
return;
}
crm_update_peer_join(__func__, node, controld_join_none);
if ((node != NULL) && (node->name != NULL)) {
if (controld_is_local_node(node->name)) {
crm_err("We're not part of the cluster anymore");
register_fsa_input(C_FSA_INTERNAL, I_ERROR, NULL);
} else if (!AM_I_DC
&& pcmk__str_eq(node->name, controld_globals.dc_name,
pcmk__str_casei)) {
crm_warn("Our DC node (%s) left the cluster", node->name);
register_fsa_input(C_FSA_INTERNAL, I_ELECTION, NULL);
}
}
if ((controld_globals.fsa_state == S_INTEGRATION)
|| (controld_globals.fsa_state == S_FINALIZE_JOIN)) {
check_join_state(controld_globals.fsa_state, __func__);
}
if ((node != NULL) && (node->xml_id != NULL)) {
fail_incompletable_actions(controld_globals.transition_graph,
node->xml_id);
}
}
void
post_cache_update(int instance)
{
xmlNode *no_op = NULL;
controld_globals.peer_seq = instance;
crm_debug("Updated cache after membership event %d.", instance);
g_hash_table_foreach(pcmk__peer_cache, reap_dead_nodes, NULL);
controld_set_fsa_input_flags(R_MEMBERSHIP);
if (AM_I_DC) {
populate_cib_nodes(controld_node_update_quick
|controld_node_update_cluster
|controld_node_update_peer
|controld_node_update_expected, __func__);
}
/*
* If we lost nodes, we should re-check the election status
* Safe to call outside of an election
*/
controld_set_fsa_action_flags(A_ELECTION_CHECK);
controld_trigger_fsa();
/* Membership changed, remind everyone we're here.
* This will aid detection of duplicate DCs
*/
no_op = pcmk__new_request(pcmk_ipc_controld,
(AM_I_DC? CRM_SYSTEM_DC : CRM_SYSTEM_CRMD), NULL,
CRM_SYSTEM_CRMD, CRM_OP_NOOP, NULL);
pcmk__cluster_send_message(NULL, pcmk_ipc_controld, no_op);
pcmk__xml_free(no_op);
}
static void
crmd_node_update_complete(xmlNode * msg, int call_id, int rc, xmlNode * output, void *user_data)
{
fsa_data_t *msg_data = NULL;
if (rc == pcmk_ok) {
crm_trace("Node update %d complete", call_id);
} else if(call_id < pcmk_ok) {
crm_err("Node update failed: %s (%d)", pcmk_strerror(call_id), call_id);
crm_log_xml_debug(msg, "failed");
register_fsa_error(C_FSA_INTERNAL, I_ERROR, NULL);
} else {
crm_err("Node update %d failed: %s (%d)", call_id, pcmk_strerror(rc), rc);
crm_log_xml_debug(msg, "failed");
register_fsa_error(C_FSA_INTERNAL, I_ERROR, NULL);
}
}
/*!
* \internal
* \brief Create an XML node state tag with updates
*
* \param[in,out] node Node whose state will be used for update
* \param[in] flags Group of <tt>enum controld_node_update_flags</tt>
* \param[in,out] parent XML node to contain update (or NULL)
* \param[in] source Who requested the update (only used for logging)
*
* \return Pointer to created node state tag
*/
xmlNode *
create_node_state_update(pcmk__node_status_t *node, uint32_t flags,
xmlNode *parent, const char *source)
{
// @TODO Ensure all callers handle NULL returns
const char *value = NULL;
xmlNode *node_state;
if (!node->state) {
crm_info("Node update for %s cancelled: no state, not seen yet",
node->name);
return NULL;
}
node_state = pcmk__xe_create(parent, PCMK__XE_NODE_STATE);
if (pcmk_is_set(node->flags, pcmk__node_status_remote)) {
pcmk__xe_set_bool_attr(node_state, PCMK_XA_REMOTE_NODE, true);
}
if (crm_xml_add(node_state, PCMK_XA_ID,
pcmk__cluster_get_xml_id(node)) == NULL) {
crm_info("Node update for %s cancelled: no ID", node->name);
pcmk__xml_free(node_state);
return NULL;
}
crm_xml_add(node_state, PCMK_XA_UNAME, node->name);
if (pcmk_is_set(flags, controld_node_update_cluster)) {
if (compare_version(controld_globals.dc_version, "3.18.0") >= 0) {
// A value 0 means the node is not a cluster member.
crm_xml_add_ll(node_state, PCMK__XA_IN_CCM, node->when_member);
} else {
pcmk__xe_set_bool_attr(node_state, PCMK__XA_IN_CCM,
pcmk__str_eq(node->state, PCMK_VALUE_MEMBER,
pcmk__str_none));
}
}
if (!pcmk_is_set(node->flags, pcmk__node_status_remote)) {
if (pcmk_is_set(flags, controld_node_update_peer)) {
if (compare_version(controld_globals.dc_version, "3.18.0") >= 0) {
// A value 0 means the peer is offline in CPG.
crm_xml_add_ll(node_state, PCMK_XA_CRMD, node->when_online);
} else {
// @COMPAT DCs < 2.1.7 use online/offline rather than timestamp
value = PCMK_VALUE_OFFLINE;
if (pcmk_is_set(node->processes, crm_get_cluster_proc())) {
value = PCMK_VALUE_ONLINE;
}
crm_xml_add(node_state, PCMK_XA_CRMD, value);
}
}
if (pcmk_is_set(flags, controld_node_update_join)) {
if (controld_get_join_phase(node) <= controld_join_none) {
value = CRMD_JOINSTATE_DOWN;
} else {
value = CRMD_JOINSTATE_MEMBER;
}
crm_xml_add(node_state, PCMK__XA_JOIN, value);
}
if (pcmk_is_set(flags, controld_node_update_expected)) {
crm_xml_add(node_state, PCMK_XA_EXPECTED, node->expected);
}
}
crm_xml_add(node_state, PCMK_XA_CRM_DEBUG_ORIGIN, source);
return node_state;
}
static void
remove_conflicting_node_callback(xmlNode * msg, int call_id, int rc,
xmlNode * output, void *user_data)
{
char *node_uuid = user_data;
do_crm_log_unlikely(rc == 0 ? LOG_DEBUG : LOG_NOTICE,
"Deletion of the unknown conflicting node \"%s\": %s (rc=%d)",
node_uuid, pcmk_strerror(rc), rc);
}
static void
search_conflicting_node_callback(xmlNode * msg, int call_id, int rc,
xmlNode * output, void *user_data)
{
char *new_node_uuid = user_data;
xmlNode *node_xml = NULL;
if (rc != pcmk_ok) {
if (rc != -ENXIO) {
crm_notice("Searching conflicting nodes for %s failed: %s (%d)",
new_node_uuid, pcmk_strerror(rc), rc);
}
return;
} else if (output == NULL) {
return;
}
if (pcmk__xe_is(output, PCMK_XE_NODE)) {
node_xml = output;
} else {
node_xml = pcmk__xe_first_child(output, PCMK_XE_NODE, NULL, NULL);
}
for (; node_xml != NULL; node_xml = pcmk__xe_next(node_xml, PCMK_XE_NODE)) {
const char *node_uuid = NULL;
const char *node_uname = NULL;
GHashTableIter iter;
pcmk__node_status_t *node = NULL;
gboolean known = FALSE;
node_uuid = crm_element_value(node_xml, PCMK_XA_ID);
node_uname = crm_element_value(node_xml, PCMK_XA_UNAME);
if (node_uuid == NULL || node_uname == NULL) {
continue;
}
g_hash_table_iter_init(&iter, pcmk__peer_cache);
while (g_hash_table_iter_next(&iter, NULL, (gpointer *) &node)) {
if ((node != NULL)
&& pcmk__str_eq(node->xml_id, node_uuid, pcmk__str_casei)
&& pcmk__str_eq(node->name, node_uname, pcmk__str_casei)) {
known = TRUE;
break;
}
}
if (known == FALSE) {
cib_t *cib_conn = controld_globals.cib_conn;
int delete_call_id = 0;
xmlNode *node_state_xml = NULL;
crm_notice("Deleting unknown node %s/%s which has conflicting uname with %s",
node_uuid, node_uname, new_node_uuid);
delete_call_id = cib_conn->cmds->remove(cib_conn, PCMK_XE_NODES,
node_xml, cib_none);
fsa_register_cib_callback(delete_call_id, pcmk__str_copy(node_uuid),
remove_conflicting_node_callback);
node_state_xml = pcmk__xe_create(NULL, PCMK__XE_NODE_STATE);
crm_xml_add(node_state_xml, PCMK_XA_ID, node_uuid);
crm_xml_add(node_state_xml, PCMK_XA_UNAME, node_uname);
delete_call_id = cib_conn->cmds->remove(cib_conn, PCMK_XE_STATUS,
node_state_xml, cib_none);
fsa_register_cib_callback(delete_call_id, pcmk__str_copy(node_uuid),
remove_conflicting_node_callback);
pcmk__xml_free(node_state_xml);
}
}
}
static void
node_list_update_callback(xmlNode * msg, int call_id, int rc, xmlNode * output, void *user_data)
{
fsa_data_t *msg_data = NULL;
if(call_id < pcmk_ok) {
crm_err("Node list update failed: %s (%d)", pcmk_strerror(call_id), call_id);
crm_log_xml_debug(msg, "update:failed");
register_fsa_error(C_FSA_INTERNAL, I_ERROR, NULL);
} else if(rc < pcmk_ok) {
crm_err("Node update %d failed: %s (%d)", call_id, pcmk_strerror(rc), rc);
crm_log_xml_debug(msg, "update:failed");
register_fsa_error(C_FSA_INTERNAL, I_ERROR, NULL);
}
}
void
populate_cib_nodes(uint32_t flags, const char *source)
{
cib_t *cib_conn = controld_globals.cib_conn;
int call_id = 0;
- gboolean from_hashtable = TRUE;
+ bool from_cache = true;
xmlNode *node_list = pcmk__xe_create(NULL, PCMK_XE_NODES);
GHashTableIter iter;
pcmk__node_status_t *node = NULL;
#if SUPPORT_COROSYNC
if (!pcmk_is_set(flags, controld_node_update_quick)
&& (pcmk_get_cluster_layer() == pcmk_cluster_layer_corosync)) {
- from_hashtable = pcmk__corosync_add_nodes(node_list);
+ from_cache = !pcmk__corosync_add_nodes(node_list);
}
#endif
- if (from_hashtable) {
+ crm_trace("Populating <" PCMK_XE_NODES "> section of CIB from %s",
+ (from_cache? "peer cache" : "cluster"));
+
+ if (from_cache) {
GString *xpath = NULL;
g_hash_table_iter_init(&iter, pcmk__peer_cache);
while (g_hash_table_iter_next(&iter, NULL, (gpointer *) &node)) {
xmlNode *new_node = NULL;
if ((node->xml_id != NULL) && (node->name != NULL)) {
crm_trace("Creating node entry for %s/%s",
node->name, node->xml_id);
if (xpath == NULL) {
xpath = g_string_sized_new(512);
} else {
g_string_truncate(xpath, 0);
}
/* We need both to be valid */
new_node = pcmk__xe_create(node_list, PCMK_XE_NODE);
crm_xml_add(new_node, PCMK_XA_ID, node->xml_id);
crm_xml_add(new_node, PCMK_XA_UNAME, node->name);
/* Search and remove unknown nodes with the conflicting uname from CIB */
pcmk__g_strcat(xpath,
"/" PCMK_XE_CIB "/" PCMK_XE_CONFIGURATION
"/" PCMK_XE_NODES "/" PCMK_XE_NODE
"[@" PCMK_XA_UNAME "='", node->name, "']"
"[@" PCMK_XA_ID "!='", node->xml_id, "']", NULL);
call_id = cib_conn->cmds->query(cib_conn,
(const char *) xpath->str, NULL,
cib_xpath);
fsa_register_cib_callback(call_id, pcmk__str_copy(node->xml_id),
search_conflicting_node_callback);
}
}
if (xpath != NULL) {
g_string_free(xpath, TRUE);
}
}
- crm_trace("Populating <nodes> section from %s", from_hashtable ? "hashtable" : "cluster");
-
if (controld_update_cib(PCMK_XE_NODES, node_list, cib_none,
node_list_update_callback) != pcmk_rc_ok) {
// Callback logs an error
goto done;
}
if (pcmk__peer_cache == NULL) {
// We don't have the necessary info to update the CIB's status section
goto done;
}
if (!AM_I_DC) {
// Only the DC populates the status section (@TODO Why only status?)
goto done;
}
pcmk__xml_free(node_list);
node_list = pcmk__xe_create(NULL, PCMK_XE_STATUS);
g_hash_table_iter_init(&iter, pcmk__peer_cache);
while (g_hash_table_iter_next(&iter, NULL, (gpointer *) &node)) {
create_node_state_update(node, flags, node_list, source);
}
if (pcmk__remote_peer_cache != NULL) {
g_hash_table_iter_init(&iter, pcmk__remote_peer_cache);
while (g_hash_table_iter_next(&iter, NULL, (gpointer *) &node)) {
create_node_state_update(node, flags, node_list, source);
}
}
controld_update_cib(PCMK_XE_STATUS, node_list, cib_none,
crmd_node_update_complete);
done:
pcmk__xml_free(node_list);
}
static void
cib_quorum_update_complete(xmlNode * msg, int call_id, int rc, xmlNode * output, void *user_data)
{
fsa_data_t *msg_data = NULL;
if (rc == pcmk_ok) {
crm_trace("Quorum update %d complete", call_id);
} else {
crm_err("Quorum update %d failed: %s (%d)", call_id, pcmk_strerror(rc), rc);
crm_log_xml_debug(msg, "failed");
register_fsa_error(C_FSA_INTERNAL, I_ERROR, NULL);
}
}
void
crm_update_quorum(gboolean quorum, gboolean force_update)
{
bool has_quorum = pcmk_is_set(controld_globals.flags, controld_has_quorum);
if (quorum) {
controld_set_global_flags(controld_ever_had_quorum);
} else if (pcmk_all_flags_set(controld_globals.flags,
controld_ever_had_quorum
|controld_no_quorum_panic)) {
pcmk__panic("Quorum lost");
}
if (AM_I_DC
&& ((has_quorum && !quorum) || (!has_quorum && quorum)
|| force_update)) {
xmlNode *update = NULL;
update = pcmk__xe_create(NULL, PCMK_XE_CIB);
crm_xml_add_int(update, PCMK_XA_HAVE_QUORUM, quorum);
crm_xml_add(update, PCMK_XA_DC_UUID, controld_globals.our_uuid);
crm_debug("Updating quorum status to %s", pcmk__btoa(quorum));
controld_update_cib(PCMK_XE_CIB, update, cib_none,
cib_quorum_update_complete);
pcmk__xml_free(update);
/* Quorum changes usually cause a new transition via other activity:
* quorum gained via a node joining will abort via the node join,
* and quorum lost via a node leaving will usually abort via resource
* activity and/or fencing.
*
* However, it is possible that nothing else causes a transition (e.g.
* someone forces quorum via corosync-cmaptcl, or quorum is lost due to
* a node in standby shutting down cleanly), so here ensure a new
* transition is triggered.
*/
if (quorum) {
/* If quorum was gained, abort after a short delay, in case multiple
* nodes are joining around the same time, so the one that brings us
* to quorum doesn't cause all the remaining ones to be fenced.
*/
abort_after_delay(PCMK_SCORE_INFINITY, pcmk__graph_restart,
"Quorum gained", 5000);
} else {
abort_transition(PCMK_SCORE_INFINITY, pcmk__graph_restart,
"Quorum lost", NULL);
}
}
if (quorum) {
controld_set_global_flags(controld_has_quorum);
} else {
controld_clear_global_flags(controld_has_quorum);
}
}

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