Page MenuHomeClusterLabs Projects
Files F1842205

No OneTemporary
Actions

View Options

diff --git a/daemons/controld/controld_membership.c b/daemons/controld/controld_membership.c
index 1f7e4c0f56..8232ee2062 100644
--- a/daemons/controld/controld_membership.c
+++ b/daemons/controld/controld_membership.c
@@ -1,457 +1,471 @@
/*
* Copyright 2004-2023 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 <string.h>
#include <crm/crm.h>
#include <crm/msg_xml.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)
{
crm_node_t *node = value;
if (crm_is_peer_active(node) == FALSE) {
crm_update_peer_join(__func__, node, crm_join_none);
if(node && node->uname) {
if (pcmk__str_eq(controld_globals.our_nodename, node->uname,
pcmk__str_casei)) {
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->uname, controld_globals.dc_name,
pcmk__str_casei)) {
crm_warn("Our DC node (%s) left the cluster", node->uname);
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->uuid != NULL)) {
fail_incompletable_actions(controld_globals.transition_graph,
node->uuid);
}
}
}
void
post_cache_update(int instance)
{
xmlNode *no_op = NULL;
crm_peer_seq = instance;
crm_debug("Updated cache after membership event %d.", instance);
g_hash_table_foreach(crm_peer_cache, reap_dead_nodes, NULL);
controld_set_fsa_input_flags(R_MEMBERSHIP);
if (AM_I_DC) {
populate_cib_nodes(node_update_quick | node_update_cluster | node_update_peer |
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 = create_request(CRM_OP_NOOP, NULL, NULL, CRM_SYSTEM_CRMD,
AM_I_DC ? CRM_SYSTEM_DC : CRM_SYSTEM_CRMD, NULL);
send_cluster_message(NULL, crm_msg_crmd, no_op, FALSE);
free_xml(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 Bitmask of node_update_flags indicating what to update
* \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(crm_node_t *node, int flags, xmlNode *parent,
const char *source)
{
const char *value = NULL;
xmlNode *node_state;
if (!node->state) {
crm_info("Node update for %s cancelled: no state, not seen yet", node->uname);
return NULL;
}
node_state = create_xml_node(parent, XML_CIB_TAG_STATE);
if (pcmk_is_set(node->flags, crm_remote_node)) {
pcmk__xe_set_bool_attr(node_state, XML_NODE_IS_REMOTE, true);
}
set_uuid(node_state, XML_ATTR_ID, node);
if (crm_element_value(node_state, XML_ATTR_ID) == NULL) {
crm_info("Node update for %s cancelled: no id", node->uname);
free_xml(node_state);
return NULL;
}
crm_xml_add(node_state, XML_ATTR_UNAME, node->uname);
if ((flags & node_update_cluster) && node->state) {
- pcmk__xe_set_bool_attr(node_state, XML_NODE_IN_CLUSTER,
- pcmk__str_eq(node->state, CRM_NODE_MEMBER, pcmk__str_casei));
+ 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, XML_NODE_IN_CLUSTER, node->when_member);
+
+ } else {
+ pcmk__xe_set_bool_attr(node_state, XML_NODE_IN_CLUSTER,
+ pcmk__str_eq(node->state, CRM_NODE_MEMBER,
+ pcmk__str_casei));
+ }
}
if (!pcmk_is_set(node->flags, crm_remote_node)) {
if (flags & node_update_peer) {
- value = OFFLINESTATUS;
- if (pcmk_is_set(node->processes, crm_get_cluster_proc())) {
- value = ONLINESTATUS;
+ 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, XML_NODE_IS_PEER,
+ node->when_online);
+
+ } else {
+ value = OFFLINESTATUS;
+ if (pcmk_is_set(node->processes, crm_get_cluster_proc())) {
+ value = ONLINESTATUS;
+ }
+ crm_xml_add(node_state, XML_NODE_IS_PEER, value);
}
- crm_xml_add(node_state, XML_NODE_IS_PEER, value);
}
if (flags & node_update_join) {
if (node->join <= crm_join_none) {
value = CRMD_JOINSTATE_DOWN;
} else {
value = CRMD_JOINSTATE_MEMBER;
}
crm_xml_add(node_state, XML_NODE_JOIN_STATE, value);
}
if (flags & node_update_expected) {
crm_xml_add(node_state, XML_NODE_EXPECTED, node->expected);
}
}
crm_xml_add(node_state, XML_ATTR_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__str_eq(crm_element_name(output), XML_CIB_TAG_NODE, pcmk__str_casei)) {
node_xml = output;
} else {
node_xml = pcmk__xml_first_child(output);
}
for (; node_xml != NULL; node_xml = pcmk__xml_next(node_xml)) {
const char *node_uuid = NULL;
const char *node_uname = NULL;
GHashTableIter iter;
crm_node_t *node = NULL;
gboolean known = FALSE;
if (!pcmk__str_eq(crm_element_name(node_xml), XML_CIB_TAG_NODE, pcmk__str_casei)) {
continue;
}
node_uuid = crm_element_value(node_xml, XML_ATTR_ID);
node_uname = crm_element_value(node_xml, XML_ATTR_UNAME);
if (node_uuid == NULL || node_uname == NULL) {
continue;
}
g_hash_table_iter_init(&iter, crm_peer_cache);
while (g_hash_table_iter_next(&iter, NULL, (gpointer *) &node)) {
if (node->uuid
&& pcmk__str_eq(node->uuid, node_uuid, pcmk__str_casei)
&& node->uname
&& pcmk__str_eq(node->uname, 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, XML_CIB_TAG_NODES,
node_xml, cib_scope_local);
fsa_register_cib_callback(delete_call_id, strdup(node_uuid),
remove_conflicting_node_callback);
node_state_xml = create_xml_node(NULL, XML_CIB_TAG_STATE);
crm_xml_add(node_state_xml, XML_ATTR_ID, node_uuid);
crm_xml_add(node_state_xml, XML_ATTR_UNAME, node_uname);
delete_call_id = cib_conn->cmds->remove(cib_conn,
XML_CIB_TAG_STATUS,
node_state_xml,
cib_scope_local);
fsa_register_cib_callback(delete_call_id, strdup(node_uuid),
remove_conflicting_node_callback);
free_xml(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(enum node_update_flags flags, const char *source)
{
cib_t *cib_conn = controld_globals.cib_conn;
int call_id = 0;
gboolean from_hashtable = TRUE;
xmlNode *node_list = create_xml_node(NULL, XML_CIB_TAG_NODES);
#if SUPPORT_COROSYNC
if (!pcmk_is_set(flags, node_update_quick) && is_corosync_cluster()) {
from_hashtable = pcmk__corosync_add_nodes(node_list);
}
#endif
if (from_hashtable) {
GHashTableIter iter;
crm_node_t *node = NULL;
GString *xpath = NULL;
g_hash_table_iter_init(&iter, crm_peer_cache);
while (g_hash_table_iter_next(&iter, NULL, (gpointer *) &node)) {
xmlNode *new_node = NULL;
if ((node->uuid != NULL) && (node->uname != NULL)) {
crm_trace("Creating node entry for %s/%s", node->uname, node->uuid);
if (xpath == NULL) {
xpath = g_string_sized_new(512);
} else {
g_string_truncate(xpath, 0);
}
/* We need both to be valid */
new_node = create_xml_node(node_list, XML_CIB_TAG_NODE);
crm_xml_add(new_node, XML_ATTR_ID, node->uuid);
crm_xml_add(new_node, XML_ATTR_UNAME, node->uname);
/* Search and remove unknown nodes with the conflicting uname from CIB */
pcmk__g_strcat(xpath,
"/" XML_TAG_CIB "/" XML_CIB_TAG_CONFIGURATION
"/" XML_CIB_TAG_NODES "/" XML_CIB_TAG_NODE
"[@" XML_ATTR_UNAME "='", node->uname, "']"
"[@" XML_ATTR_ID "!='", node->uuid, "']", NULL);
call_id = cib_conn->cmds->query(cib_conn,
(const char *) xpath->str,
NULL,
cib_scope_local|cib_xpath);
fsa_register_cib_callback(call_id, strdup(node->uuid),
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(XML_CIB_TAG_NODES, node_list, cib_scope_local,
node_list_update_callback) == pcmk_rc_ok)
&& (crm_peer_cache != NULL) && AM_I_DC) {
/*
* There is no need to update the local CIB with our values if
* we've not seen valid membership data
*/
GHashTableIter iter;
crm_node_t *node = NULL;
free_xml(node_list);
node_list = create_xml_node(NULL, XML_CIB_TAG_STATUS);
g_hash_table_iter_init(&iter, crm_peer_cache);
while (g_hash_table_iter_next(&iter, NULL, (gpointer *) &node)) {
create_node_state_update(node, flags, node_list, source);
}
if (crm_remote_peer_cache) {
g_hash_table_iter_init(&iter, crm_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(XML_CIB_TAG_STATUS, node_list, cib_scope_local,
crmd_node_update_complete);
}
free_xml(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_suicide)) {
pcmk__panic(__func__);
}
if (AM_I_DC
&& ((has_quorum && !quorum) || (!has_quorum && quorum)
|| force_update)) {
xmlNode *update = NULL;
update = create_xml_node(NULL, XML_TAG_CIB);
crm_xml_add_int(update, XML_ATTR_HAVE_QUORUM, quorum);
crm_xml_add(update, XML_ATTR_DC_UUID, controld_globals.our_uuid);
crm_debug("Updating quorum status to %s", pcmk__btoa(quorum));
controld_update_cib(XML_TAG_CIB, update, cib_scope_local,
cib_quorum_update_complete);
free_xml(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(INFINITY, pcmk__graph_restart, "Quorum gained",
5000);
} else {
abort_transition(INFINITY, pcmk__graph_restart, "Quorum lost",
NULL);
}
}
if (quorum) {
controld_set_global_flags(controld_has_quorum);
} else {
controld_clear_global_flags(controld_has_quorum);
}
}

File Metadata

Mime Type
text/x-diff
Expires
Sat, Nov 23, 2:14 PM (19 h, 25 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
1011224
Default Alt Text
(17 KB)

Event Timeline