Page MenuHomeClusterLabs Projects
Files F4512042

No OneTemporary
Actions

View Options

diff --git a/crmd/join_client.c b/crmd/join_client.c
index b8ff66aa48..de5b6f32e6 100644
--- a/crmd/join_client.c
+++ b/crmd/join_client.c
@@ -1,295 +1,298 @@
/*
* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <crm_internal.h>
#include <crm/crm.h>
#include <crm/cib.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <crmd_fsa.h>
#include <crmd_messages.h>
int reannounce_count = 0;
void join_query_callback(xmlNode * msg, int call_id, int rc, xmlNode * output, void *user_data);
extern ha_msg_input_t *copy_ha_msg_input(ha_msg_input_t * orig);
/* A_CL_JOIN_QUERY */
/* is there a DC out there? */
void
do_cl_join_query(long long action,
enum crmd_fsa_cause cause,
enum crmd_fsa_state cur_state,
enum crmd_fsa_input current_input, fsa_data_t * msg_data)
{
xmlNode *req = create_request(CRM_OP_JOIN_ANNOUNCE, NULL, NULL,
CRM_SYSTEM_DC, CRM_SYSTEM_CRMD, NULL);
sleep(1); /* give the CCM time to propogate to the DC */
update_dc(NULL); /* Unset any existing value so that the result is not discarded */
crm_debug("Querying for a DC");
send_cluster_message(NULL, crm_msg_crmd, req, FALSE);
free_xml(req);
}
/* A_CL_JOIN_ANNOUNCE */
/* this is kind of a workaround for the fact that we may not be around or
* are otherwise unable to reply when the DC sends out A_DC_JOIN_OFFER_ALL
*/
void
do_cl_join_announce(long long action,
enum crmd_fsa_cause cause,
enum crmd_fsa_state cur_state,
enum crmd_fsa_input current_input, fsa_data_t * msg_data)
{
/* Once we hear from the DC, we can stop the timer
*
* This timer was started either on startup or when a node
* left the CCM list
*/
/* don't announce if we're in one of these states */
if (cur_state != S_PENDING) {
crm_warn("Not announcing cluster join because in state %s",
fsa_state2string(cur_state));
return;
}
if (AM_I_OPERATIONAL) {
/* send as a broadcast */
xmlNode *req = create_request(CRM_OP_JOIN_ANNOUNCE, NULL, NULL,
CRM_SYSTEM_DC, CRM_SYSTEM_CRMD, NULL);
crm_debug("Announcing availability");
update_dc(NULL);
send_cluster_message(NULL, crm_msg_crmd, req, FALSE);
free_xml(req);
} else {
/* Delay announce until we have finished local startup */
crm_warn("Delaying announce of cluster join until local startup is complete");
return;
}
}
static int query_call_id = 0;
/* A_CL_JOIN_REQUEST */
/* aka. accept the welcome offer */
void
do_cl_join_offer_respond(long long action,
enum crmd_fsa_cause cause,
enum crmd_fsa_state cur_state,
enum crmd_fsa_input current_input, fsa_data_t * msg_data)
{
ha_msg_input_t *input = fsa_typed_data(fsa_dt_ha_msg);
const char *welcome_from = crm_element_value(input->msg, F_CRM_HOST_FROM);
const char *join_id = crm_element_value(input->msg, F_CRM_JOIN_ID);
#if 0
if (we are sick) {
log error;
/* save the request for later? */
return;
}
#endif
crm_trace("Accepting cluster join offer from node %s "CRM_XS" join-%s",
welcome_from, crm_element_value(input->msg, F_CRM_JOIN_ID));
/* we only ever want the last one */
if (query_call_id > 0) {
crm_trace("Cancelling previous join query: %d", query_call_id);
remove_cib_op_callback(query_call_id, FALSE);
query_call_id = 0;
}
if (update_dc(input->msg) == FALSE) {
crm_warn("Discarding cluster join offer from node %s (expected %s)",
welcome_from, fsa_our_dc);
return;
}
CRM_LOG_ASSERT(input != NULL);
query_call_id =
fsa_cib_conn->cmds->query(fsa_cib_conn, NULL, NULL, cib_scope_local | cib_no_children);
fsa_register_cib_callback(query_call_id, FALSE, strdup(join_id), join_query_callback);
crm_trace("Registered join query callback: %d", query_call_id);
register_fsa_action(A_DC_TIMER_STOP);
}
void
join_query_callback(xmlNode * msg, int call_id, int rc, xmlNode * output, void *user_data)
{
char *join_id = user_data;
xmlNode *generation = create_xml_node(NULL, XML_CIB_TAG_GENERATION_TUPPLE);
CRM_LOG_ASSERT(join_id != NULL);
if (query_call_id != call_id) {
crm_trace("Query %d superseded", call_id);
goto done;
}
query_call_id = 0;
if(rc != pcmk_ok || output == NULL) {
crm_err("Could not retrieve version details for join-%s: %s (%d)",
join_id, pcmk_strerror(rc), rc);
register_fsa_error_adv(C_FSA_INTERNAL, I_ERROR, NULL, NULL, __FUNCTION__);
} else if (fsa_our_dc == NULL) {
crm_debug("Membership is in flux, not continuing join-%s", join_id);
} else {
xmlNode *reply = NULL;
crm_debug("Respond to join offer join-%s from %s", join_id, fsa_our_dc);
copy_in_properties(generation, output);
reply = create_request(CRM_OP_JOIN_REQUEST, generation, fsa_our_dc,
CRM_SYSTEM_DC, CRM_SYSTEM_CRMD, NULL);
crm_xml_add(reply, F_CRM_JOIN_ID, join_id);
send_cluster_message(crm_get_peer(0, fsa_our_dc), crm_msg_crmd, reply, TRUE);
free_xml(reply);
}
done:
free_xml(generation);
}
/* A_CL_JOIN_RESULT */
/* aka. this is notification that we have (or have not) been accepted */
void
do_cl_join_finalize_respond(long long action,
enum crmd_fsa_cause cause,
enum crmd_fsa_state cur_state,
enum crmd_fsa_input current_input, fsa_data_t * msg_data)
{
xmlNode *tmp1 = NULL;
gboolean was_nack = TRUE;
static gboolean first_join = TRUE;
ha_msg_input_t *input = fsa_typed_data(fsa_dt_ha_msg);
const char *start_state = daemon_option("node_start_state");
int join_id = -1;
const char *op = crm_element_value(input->msg, F_CRM_TASK);
const char *ack_nack = crm_element_value(input->msg, CRM_OP_JOIN_ACKNAK);
const char *welcome_from = crm_element_value(input->msg, F_CRM_HOST_FROM);
if (safe_str_neq(op, CRM_OP_JOIN_ACKNAK)) {
crm_trace("Ignoring op=%s message", op);
return;
}
/* calculate if it was an ack or a nack */
if (crm_is_true(ack_nack)) {
was_nack = FALSE;
}
crm_element_value_int(input->msg, F_CRM_JOIN_ID, &join_id);
if (was_nack) {
crm_err("Shutting down because cluster join with leader %s failed "
CRM_XS" join-%d NACK'd", welcome_from, join_id);
register_fsa_error(C_FSA_INTERNAL, I_ERROR, NULL);
return;
}
if (AM_I_DC == FALSE && safe_str_eq(welcome_from, fsa_our_uname)) {
crm_warn("Discarding our own welcome - we're no longer the DC");
return;
}
if (update_dc(input->msg) == FALSE) {
crm_warn("Discarding %s from node %s (expected from %s)",
op, welcome_from, fsa_our_dc);
return;
}
/* send our status section to the DC */
tmp1 = do_lrm_query(TRUE, fsa_our_uname);
if (tmp1 != NULL) {
xmlNode *reply = create_request(CRM_OP_JOIN_CONFIRM, tmp1, fsa_our_dc,
CRM_SYSTEM_DC, CRM_SYSTEM_CRMD, NULL);
crm_xml_add_int(reply, F_CRM_JOIN_ID, join_id);
crm_debug("Confirming join-%d: sending local operation history to %s",
join_id, fsa_our_dc);
/*
* If this is the node's first join since the crmd started on it, clear
* any previous transient node attributes, to handle the case where
* the node restarted so quickly that the cluster layer didn't notice.
*
* Do not remove the resources though, they'll be cleaned up in
* do_dc_join_ack(). Removing them here creates a race condition if the
* crmd is being recovered. Instead of a list of active resources from
* the lrmd, we may end up with a blank status section. If we are _NOT_
* lucky, we will probe for the "wrong" instance of anonymous clones and
* end up with multiple active instances on the machine.
*/
if (first_join && is_not_set(fsa_input_register, R_SHUTDOWN)) {
first_join = FALSE;
erase_status_tag(fsa_our_uname, XML_TAG_TRANSIENT_NODEATTRS, 0);
update_attrd(fsa_our_uname, "terminate", NULL, NULL, FALSE);
update_attrd(fsa_our_uname, XML_CIB_ATTR_SHUTDOWN, "0", NULL, FALSE);
if (start_state) {
if (safe_str_eq(start_state, "standby")) {
char *attr_id = crm_strdup_printf("nodes-%.256s-standby", fsa_our_uuid);
- crm_notice("Forcing node %s to join in %s state per configured environment", fsa_our_uname, start_state);
- update_attr_delegate(fsa_cib_conn, cib_sync_call, XML_CIB_TAG_NODES, fsa_our_uuid, NULL, NULL,
- attr_id, "standby", "on", TRUE, NULL, NULL);
+ crm_notice("Forcing node %s to join in %s state per configured environment",
+ fsa_our_uname, start_state);
+ update_attr_delegate(fsa_cib_conn, cib_sync_call, XML_CIB_TAG_NODES, fsa_our_uuid,
+ NULL, NULL, attr_id, "standby", "on", TRUE, NULL, NULL);
} else if (safe_str_eq(start_state, "online")) {
char *attr_id = crm_strdup_printf("nodes-%.256s-standby", fsa_our_uuid);
- crm_notice("Forcing node %s to join in %s state per configured environment", fsa_our_uname, start_state);
- update_attr_delegate(fsa_cib_conn, cib_sync_call, XML_CIB_TAG_NODES, fsa_our_uuid, NULL, NULL,
- attr_id, "standby", "off", TRUE, NULL, NULL);
+ crm_notice("Forcing node %s to join in %s state per configured environment",
+ fsa_our_uname, start_state);
+ update_attr_delegate(fsa_cib_conn, cib_sync_call, XML_CIB_TAG_NODES, fsa_our_uuid,
+ NULL, NULL, attr_id, "standby", "off", TRUE, NULL, NULL);
} else if (safe_str_eq(start_state, "default")) {
crm_debug("Not forcing a starting state on node %s", fsa_our_uname);
} else {
- crm_warn("Unrecognized start state '%s', using 'default' (%s)", start_state, fsa_our_uname);
+ crm_warn("Unrecognized start state '%s', using 'default' (%s)",
+ start_state, fsa_our_uname);
}
}
}
send_cluster_message(crm_get_peer(0, fsa_our_dc), crm_msg_crmd, reply, TRUE);
free_xml(reply);
if (AM_I_DC == FALSE) {
register_fsa_input_adv(cause, I_NOT_DC, NULL, A_NOTHING, TRUE, __FUNCTION__);
update_attrd(NULL, NULL, NULL, NULL, FALSE);
}
free_xml(tmp1);
} else {
crm_err("Could not confirm join-%d with %s: Local operation history failed",
join_id, fsa_our_dc);
register_fsa_error(C_FSA_INTERNAL, I_FAIL, NULL);
}
}

File Metadata

Mime Type
text/x-diff
Expires
Wed, Jun 25, 3:39 AM (1 d, 1 h)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
1952056
Default Alt Text
(12 KB)

Event Timeline