Page MenuHomeClusterLabs Projects
Files F7632178

nodes.h
No OneTemporary
Actions

nodes.h
View Options

/*
* Copyright 2004-2024 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#ifndef PCMK__CRM_COMMON_NODES__H
# define PCMK__CRM_COMMON_NODES__H
#include <stdbool.h> // bool
#include <glib.h> // gboolean, GList, GHashTable
#include <crm/common/scheduler_types.h> // pcmk_resource_t, pcmk_scheduler_t
#ifdef __cplusplus
extern "C" {
#endif
/*!
* \file
* \brief Scheduler API for nodes
* \ingroup core
*/
// Special node attributes
#define PCMK_NODE_ATTR_TERMINATE "terminate"
//! Possible node types
enum node_type {
pcmk_node_variant_cluster = 1, //!< Cluster layer node
pcmk_node_variant_remote = 2, //!< Pacemaker Remote node
node_ping = 0, //!< \deprecated Do not use
#if !defined(PCMK_ALLOW_DEPRECATED) || (PCMK_ALLOW_DEPRECATED == 1)
//! \deprecated Use pcmk_node_variant_cluster instead
node_member = pcmk_node_variant_cluster,
//! \deprecated Use pcmk_node_variant_remote instead
node_remote = pcmk_node_variant_remote,
#endif
};
//! When to probe a resource on a node (as specified in location constraints)
enum pe_discover_e {
pcmk_probe_always = 0, //! Always probe resource on node
pcmk_probe_never = 1, //! Never probe resource on node
pcmk_probe_exclusive = 2, //! Probe only on designated nodes
#if !defined(PCMK_ALLOW_DEPRECATED) || (PCMK_ALLOW_DEPRECATED == 1)
//! \deprecated Use pcmk_probe_always instead
pe_discover_always = pcmk_probe_always,
//! \deprecated Use pcmk_probe_never instead
pe_discover_never = pcmk_probe_never,
//! \deprecated Use pcmk_probe_exclusive instead
pe_discover_exclusive = pcmk_probe_exclusive,
#endif
};
//! Basic node information (all node objects for the same node share this)
struct pe_node_shared_s {
const char *id; //!< Node ID at the cluster layer
const char *uname; //!< Node name in cluster
enum node_type type; //!< Node variant
// @TODO Convert these into a flag group
gboolean online; //!< Whether online
gboolean standby; //!< Whether in standby mode
gboolean standby_onfail; //!< Whether in standby mode due to on-fail
gboolean pending; //!< Whether controller membership is pending
gboolean unclean; //!< Whether node requires fencing
gboolean unseen; //!< Whether node has never joined cluster
gboolean shutdown; //!< Whether shutting down
gboolean expected_up; //!< Whether expected join state is member
gboolean is_dc; //!< Whether node is cluster's DC
gboolean maintenance; //!< Whether in maintenance mode
gboolean rsc_discovery_enabled; //!< Whether probes are allowed on node
/*!
* Whether this is a guest node whose guest resource must be recovered or a
* remote node that must be fenced
*/
gboolean remote_requires_reset;
/*!
* Whether this is a Pacemaker Remote node that was fenced since it was last
* connected by the cluster
*/
gboolean remote_was_fenced;
/*!
* Whether this is a Pacemaker Remote node previously marked in its
* node state as being in maintenance mode
*/
gboolean remote_maintenance;
gboolean unpacked; //!< Whether node history has been unpacked
/*!
* Number of resources active on this node (valid after CIB status section
* has been unpacked, as long as pcmk_sched_no_counts was not set)
*/
int num_resources;
//! Remote connection resource for node, if it is a Pacemaker Remote node
pcmk_resource_t *remote_rsc;
GList *running_rsc; //!< List of resources active on node
GList *allocated_rsc; //!< List of resources assigned to node
GHashTable *attrs; //!< Node attributes
GHashTable *utilization; //!< Node utilization attributes
GHashTable *digest_cache; //!< Cache of calculated resource digests
/*!
* Sum of priorities of all resources active on node and on any guest nodes
* connected to this node, with +1 for promoted instances (used to compare
* nodes for PCMK_OPT_PRIORITY_FENCING_DELAY)
*/
int priority;
pcmk_scheduler_t *data_set; //!< Cluster that node is part of
};
//! Implementation of pcmk_node_t
struct pe_node_s {
int weight; //!< Node score for a given resource
gboolean fixed; //!< \deprecated Do not use
int count; //!< Counter reused by assignment and promotion code
struct pe_node_shared_s *details; //!< Basic node information
// @COMPAT This should be enum pe_discover_e
int rsc_discover_mode; //!< Probe mode (enum pe_discover_e)
};
/*!
* \internal
* \brief Return a string suitable for logging as a node name
*
* \param[in] node Node to return a node name string for
*
* \return Node name if available, otherwise node ID if available,
* otherwise "unspecified node" if node is NULL or "unidentified node"
* if node has neither a name nor ID.
*/
static inline const char *
pcmk__node_name(const pcmk_node_t *node)
{
if (node == NULL) {
return "unspecified node";
} else if (node->details->uname != NULL) {
return node->details->uname;
} else if (node->details->id != NULL) {
return node->details->id;
} else {
return "unidentified node";
}
}
/*!
* \internal
* \brief Check whether two node objects refer to the same node
*
* \param[in] node1 First node object to compare
* \param[in] node2 Second node object to compare
*
* \return true if \p node1 and \p node2 refer to the same node
*/
static inline bool
pcmk__same_node(const pcmk_node_t *node1, const pcmk_node_t *node2)
{
return (node1 != NULL) && (node2 != NULL)
&& (node1->details == node2->details);
}
#ifdef __cplusplus
}
#endif
#endif // PCMK__CRM_COMMON_NODES__H

File Metadata

Mime Type
text/x-c
Expires
Thu, Oct 16, 3:18 PM (1 d, 3 h)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
2502859
Default Alt Text
nodes.h (6 KB)

Event Timeline