Page MenuHomeClusterLabs Projects
Files F3687597

No OneTemporary
Actions

View Options

diff --git a/lib/cluster/cluster.c b/lib/cluster/cluster.c
index 299878e0ae..ada773e817 100644
--- a/lib/cluster/cluster.c
+++ b/lib/cluster/cluster.c
@@ -1,637 +1,647 @@
/*
* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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 <dlfcn.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/utsname.h>
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/ipc.h>
#include <crm/cluster/internal.h>
CRM_TRACE_INIT_DATA(cluster);
#if SUPPORT_HEARTBEAT
void *hb_library = NULL;
#endif
static char *
get_heartbeat_uuid(const char *uname)
{
char *uuid_calc = NULL;
#if SUPPORT_HEARTBEAT
cl_uuid_t uuid_raw;
const char *unknown = "00000000-0000-0000-0000-000000000000";
if (heartbeat_cluster == NULL) {
crm_warn("No connection to heartbeat, using uuid=uname");
return NULL;
} else if(uname == NULL) {
return NULL;
}
if (heartbeat_cluster->llc_ops->get_uuid_by_name(heartbeat_cluster, uname, &uuid_raw) ==
HA_FAIL) {
crm_err("get_uuid_by_name() call failed for host %s", uname);
free(uuid_calc);
return NULL;
}
uuid_calc = calloc(1, 50);
cl_uuid_unparse(&uuid_raw, uuid_calc);
if (safe_str_eq(uuid_calc, unknown)) {
crm_warn("Could not calculate UUID for %s", uname);
free(uuid_calc);
return NULL;
}
#endif
return uuid_calc;
}
static gboolean
uname_is_uuid(void)
{
static const char *uuid_pref = NULL;
if (uuid_pref == NULL) {
uuid_pref = getenv("PCMK_uname_is_uuid");
}
if (uuid_pref == NULL) {
/* true is legacy mode */
uuid_pref = "false";
}
return crm_is_true(uuid_pref);
}
int
get_corosync_id(int id, const char *uuid)
{
if (id == 0 && !uname_is_uuid() && is_corosync_cluster()) {
id = crm_atoi(uuid, "0");
}
return id;
}
char *
get_corosync_uuid(crm_node_t *node)
{
if(node == NULL) {
return NULL;
} else if (!uname_is_uuid() && is_corosync_cluster()) {
if (node->id > 0) {
int len = 32;
char *buffer = NULL;
buffer = calloc(1, (len + 1));
if (buffer != NULL) {
snprintf(buffer, len, "%u", node->id);
}
return buffer;
} else {
crm_info("Node %s is not yet known by corosync", node->uname);
}
} else if (node->uname != NULL) {
return strdup(node->uname);
}
return NULL;
}
const char *
crm_peer_uuid(crm_node_t *peer)
{
char *uuid = NULL;
enum cluster_type_e type = get_cluster_type();
/* avoid blocking heartbeat calls where possible */
if(peer == NULL) {
return NULL;
} else if (peer->uuid) {
return peer->uuid;
}
switch (type) {
case pcmk_cluster_corosync:
uuid = get_corosync_uuid(peer);
break;
case pcmk_cluster_cman:
case pcmk_cluster_classic_ais:
if (peer->uname) {
uuid = strdup(peer->uname);
}
break;
case pcmk_cluster_heartbeat:
uuid = get_heartbeat_uuid(peer->uname);
break;
case pcmk_cluster_unknown:
case pcmk_cluster_invalid:
crm_err("Unsupported cluster type");
break;
}
peer->uuid = uuid;
return peer->uuid;
}
gboolean
crm_cluster_connect(crm_cluster_t * cluster)
{
enum cluster_type_e type = get_cluster_type();
crm_notice("Connecting to cluster infrastructure: %s", name_for_cluster_type(type));
#if SUPPORT_COROSYNC
if (is_openais_cluster()) {
crm_peer_init();
return init_cs_connection(cluster);
}
#endif
#if SUPPORT_HEARTBEAT
if (is_heartbeat_cluster()) {
int rv;
/* coverity[var_deref_op] False positive */
if (cluster->hb_conn == NULL) {
/* No object passed in, create a new one. */
ll_cluster_t *(*new_cluster) (const char *llctype) =
find_library_function(&hb_library, HEARTBEAT_LIBRARY, "ll_cluster_new", 1);
cluster->hb_conn = (*new_cluster) ("heartbeat");
/* dlclose(handle); */
} else {
/* Object passed in. Disconnect first, then reconnect below. */
cluster->hb_conn->llc_ops->signoff(cluster->hb_conn, FALSE);
}
/* make sure we are disconnected first with the old object, if any. */
if (heartbeat_cluster && heartbeat_cluster != cluster->hb_conn) {
heartbeat_cluster->llc_ops->signoff(heartbeat_cluster, FALSE);
}
CRM_ASSERT(cluster->hb_conn != NULL);
heartbeat_cluster = cluster->hb_conn;
rv = register_heartbeat_conn(cluster);
if (rv) {
/* we'll benefit from a bigger queue length on heartbeat side.
* Otherwise, if peers send messages faster than we can consume
* them right now, heartbeat messaging layer will kick us out once
* it's (small) default queue fills up :(
* If we fail to adjust the sendq length, that's not yet fatal, though.
*/
if (HA_OK != heartbeat_cluster->llc_ops->set_sendq_len(heartbeat_cluster, 1024)) {
crm_warn("Cannot set sendq length: %s",
heartbeat_cluster->llc_ops->errmsg(heartbeat_cluster));
}
}
return rv;
}
#endif
crm_info("Unsupported cluster stack: %s", getenv("HA_cluster_type"));
return FALSE;
}
void
crm_cluster_disconnect(crm_cluster_t * cluster)
{
enum cluster_type_e type = get_cluster_type();
const char *type_str = name_for_cluster_type(type);
crm_info("Disconnecting from cluster infrastructure: %s", type_str);
#if SUPPORT_COROSYNC
if (is_openais_cluster()) {
crm_peer_destroy();
terminate_cs_connection(cluster);
crm_info("Disconnected from %s", type_str);
return;
}
#endif
#if SUPPORT_HEARTBEAT
if (is_heartbeat_cluster()) {
if (cluster == NULL) {
crm_info("No cluster connection");
return;
} else if (cluster->hb_conn) {
cluster->hb_conn->llc_ops->signoff(cluster->hb_conn, TRUE);
cluster->hb_conn = NULL;
crm_info("Disconnected from %s", type_str);
return;
} else {
crm_info("No %s connection", type_str);
return;
}
}
#endif
crm_info("Unsupported cluster stack: %s", getenv("HA_cluster_type"));
}
gboolean
send_cluster_message(crm_node_t * node, enum crm_ais_msg_types service, xmlNode * data,
gboolean ordered)
{
#if SUPPORT_COROSYNC
if (is_openais_cluster()) {
return send_cluster_message_cs(data, FALSE, node, service);
}
#endif
#if SUPPORT_HEARTBEAT
if (is_heartbeat_cluster()) {
return send_ha_message(heartbeat_cluster, data, node ? node->uname : NULL, ordered);
}
#endif
return FALSE;
}
const char *
get_local_node_name(void)
{
static char *name = NULL;
if(name) {
return name;
}
name = get_node_name(0);
return name;
}
char *
get_node_name(uint32_t nodeid)
{
char *name = NULL;
enum cluster_type_e stack = get_cluster_type();
switch (stack) {
case pcmk_cluster_heartbeat:
break;
#if SUPPORT_PLUGIN
case pcmk_cluster_classic_ais:
name = classic_node_name(nodeid);
break;
#else
# if SUPPORT_COROSYNC
case pcmk_cluster_corosync:
name = corosync_node_name(0, nodeid);
break;
# endif
#endif
#if SUPPORT_CMAN
case pcmk_cluster_cman:
name = cman_node_name(nodeid);
break;
#endif
default:
crm_err("Unknown cluster type: %s (%d)", name_for_cluster_type(stack), stack);
}
if(name == NULL && nodeid == 0) {
struct utsname res;
int rc = uname(&res);
if (rc == 0) {
crm_notice("Defaulting to uname -n for the local %s node name",
name_for_cluster_type(stack));
name = strdup(res.nodename);
}
if (name == NULL) {
crm_err("Could not obtain the local %s node name", name_for_cluster_type(stack));
crm_exit(DAEMON_RESPAWN_STOP);
}
}
if (name == NULL) {
crm_notice("Could not obtain a node name for %s nodeid %u",
name_for_cluster_type(stack), nodeid);
}
return name;
}
/* Only used by update_failcount() in te_utils.c */
const char *
crm_peer_uname(const char *uuid)
{
GHashTableIter iter;
crm_node_t *node = NULL;
CRM_CHECK(uuid != NULL, return NULL);
/* remote nodes have the same uname and uuid */
if (g_hash_table_lookup(crm_remote_peer_cache, uuid)) {
return uuid;
}
/* avoid blocking calls where possible */
g_hash_table_iter_init(&iter, crm_peer_cache);
while (g_hash_table_iter_next(&iter, NULL, (gpointer *) &node)) {
if(node->uuid && strcasecmp(node->uuid, uuid) == 0) {
if(node->uname) {
return node->uname;
}
break;
}
}
#if SUPPORT_COROSYNC
if (is_openais_cluster()) {
if (uname_is_uuid() == FALSE && is_corosync_cluster()) {
uint32_t id = crm_int_helper(uuid, NULL);
node = crm_get_peer(id, NULL);
} else {
node = crm_get_peer(0, uuid);
}
if (node) {
crm_info("Setting uuid for node %s[%u] to '%s'", node->uname, node->id, uuid);
node->uuid = strdup(uuid);
if(node->uname) {
return node->uname;
}
}
return NULL;
}
#endif
#if SUPPORT_HEARTBEAT
if (is_heartbeat_cluster()) {
if (heartbeat_cluster != NULL) {
cl_uuid_t uuid_raw;
char *uuid_copy = strdup(uuid);
char *uname = malloc(MAX_NAME);
cl_uuid_parse(uuid_copy, &uuid_raw);
if (heartbeat_cluster->llc_ops->get_name_by_uuid(heartbeat_cluster, &uuid_raw, uname,
MAX_NAME) == HA_FAIL) {
crm_err("Could not calculate uname for %s", uuid);
} else {
node = crm_get_peer(0, uname);
}
free(uuid_copy);
free(uname);
}
if (node) {
crm_info("Setting uuid for node %s to '%s'", node->uname, uuid);
node->uuid = strdup(uuid);
if(node->uname) {
return node->uname;
}
}
return NULL;
}
#endif
return NULL;
}
void
set_uuid(xmlNode *xml, const char *attr, crm_node_t *node)
{
const char *uuid_calc = crm_peer_uuid(node);
crm_xml_add(xml, attr, uuid_calc);
return;
}
const char *
name_for_cluster_type(enum cluster_type_e type)
{
switch (type) {
case pcmk_cluster_classic_ais:
return "classic openais (with plugin)";
case pcmk_cluster_cman:
return "cman";
case pcmk_cluster_corosync:
return "corosync";
case pcmk_cluster_heartbeat:
return "heartbeat";
case pcmk_cluster_unknown:
return "unknown";
case pcmk_cluster_invalid:
return "invalid";
}
crm_err("Invalid cluster type: %d", type);
return "invalid";
}
/* Do not expose these two */
int set_cluster_type(enum cluster_type_e type);
static enum cluster_type_e cluster_type = pcmk_cluster_unknown;
int
set_cluster_type(enum cluster_type_e type)
{
if (cluster_type == pcmk_cluster_unknown) {
crm_info("Cluster type set to: %s", name_for_cluster_type(type));
cluster_type = type;
return 0;
} else if (cluster_type == type) {
return 0;
} else if (pcmk_cluster_unknown == type) {
cluster_type = type;
return 0;
}
crm_err("Cluster type already set to %s, ignoring %s",
name_for_cluster_type(cluster_type), name_for_cluster_type(type));
return -1;
}
enum cluster_type_e
get_cluster_type(void)
{
bool detected = FALSE;
const char *cluster = NULL;
/* Return the previous calculation, if any */
if (cluster_type != pcmk_cluster_unknown) {
return cluster_type;
}
cluster = getenv("HA_cluster_type");
#if SUPPORT_HEARTBEAT
/* If nothing is defined in the environment, try heartbeat (if supported) */
if(cluster == NULL) {
ll_cluster_t *hb;
ll_cluster_t *(*new_cluster) (const char *llctype) = find_library_function(
&hb_library, HEARTBEAT_LIBRARY, "ll_cluster_new", 1);
hb = (*new_cluster) ("heartbeat");
crm_debug("Testing with Heartbeat");
- if (hb->llc_ops->signon(hb, crm_system_name) == HA_OK) {
+ /*
+ * Test as "casual" client (clientid == NULL; will be replaced by
+ * current pid). We are trying to detect if we can communicate with
+ * heartbeat, not if we can register as some specific service.
+ * Otherwise all but one of several concurrent invocations will get
+ * HA_FAIL because of:
+ * WARN: duplicate client add request
+ * ERROR: api_process_registration_msg: cannot add client()
+ * and then likely fail :(
+ */
+ if (hb->llc_ops->signon(hb, NULL) == HA_OK) {
hb->llc_ops->signoff(hb, FALSE);
cluster_type = pcmk_cluster_heartbeat;
detected = TRUE;
goto done;
}
}
#endif
#if SUPPORT_COROSYNC
/* If nothing is defined in the environment, try corosync (if supported) */
if(cluster == NULL) {
crm_debug("Testing with Corosync");
cluster_type = find_corosync_variant();
if (cluster_type != pcmk_cluster_unknown) {
detected = TRUE;
goto done;
}
}
#endif
/* Something was defined in the environment, test it against what we support */
crm_info("Verifying cluster type: '%s'", cluster?cluster:"-unspecified-");
if (cluster == NULL) {
#if SUPPORT_HEARTBEAT
} else if (safe_str_eq(cluster, "heartbeat")) {
cluster_type = pcmk_cluster_heartbeat;
#endif
#if SUPPORT_COROSYNC
} else if (safe_str_eq(cluster, "openais")
|| safe_str_eq(cluster, "classic openais (with plugin)")) {
cluster_type = pcmk_cluster_classic_ais;
} else if (safe_str_eq(cluster, "corosync")) {
cluster_type = pcmk_cluster_corosync;
#endif
#if SUPPORT_CMAN
} else if (safe_str_eq(cluster, "cman")) {
cluster_type = pcmk_cluster_cman;
#endif
} else {
cluster_type = pcmk_cluster_invalid;
goto done; /* Keep the compiler happy when no stacks are supported */
}
done:
if (cluster_type == pcmk_cluster_unknown) {
crm_notice("Could not determin the current cluster type");
} else if (cluster_type == pcmk_cluster_invalid) {
crm_notice("This installation does not support the '%s' cluster infrastructure: terminating.",
cluster);
crm_exit(DAEMON_RESPAWN_STOP);
} else {
crm_info("%s an active '%s' cluster", detected?"Detected":"Assuming", name_for_cluster_type(cluster_type));
}
return cluster_type;
}
gboolean
is_cman_cluster(void)
{
return get_cluster_type() == pcmk_cluster_cman;
}
gboolean
is_corosync_cluster(void)
{
return get_cluster_type() == pcmk_cluster_corosync;
}
gboolean
is_classic_ais_cluster(void)
{
return get_cluster_type() == pcmk_cluster_classic_ais;
}
gboolean
is_openais_cluster(void)
{
enum cluster_type_e type = get_cluster_type();
if (type == pcmk_cluster_classic_ais) {
return TRUE;
} else if (type == pcmk_cluster_corosync) {
return TRUE;
} else if (type == pcmk_cluster_cman) {
return TRUE;
}
return FALSE;
}
gboolean
is_heartbeat_cluster(void)
{
return get_cluster_type() == pcmk_cluster_heartbeat;
}
gboolean
node_name_is_valid(const char *key, const char *name)
{
int octet;
if (name == NULL) {
crm_trace("%s is empty", key);
return FALSE;
} else if (sscanf(name, "%d.%d.%d.%d", &octet, &octet, &octet, &octet) == 4) {
crm_trace("%s contains an ipv4 address, ignoring: %s", key, name);
return FALSE;
} else if (strstr(name, ":") != NULL) {
crm_trace("%s contains an ipv6 address, ignoring: %s", key, name);
return FALSE;
}
crm_trace("%s is valid", key);
return TRUE;
}

File Metadata

Mime Type
text/x-diff
Expires
Mon, Apr 21, 8:07 PM (6 h, 10 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
1665660
Default Alt Text
(17 KB)

Event Timeline