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diff --git a/lib/pengine/pe_digest.c b/lib/pengine/pe_digest.c
index cb58397218..11147b886c 100644
--- a/lib/pengine/pe_digest.c
+++ b/lib/pengine/pe_digest.c
@@ -1,580 +1,620 @@
/*
* Copyright 2004-2022 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.
*/
#include <crm_internal.h>
#include <glib.h>
#include <stdbool.h>
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <crm/common/xml_internal.h>
#include <crm/pengine/internal.h>
#include "pe_status_private.h"
extern bool pcmk__is_daemon;
/*!
* \internal
* \brief Free an operation digest cache entry
*
* \param[in] ptr Pointer to cache entry to free
*
* \note The argument is a gpointer so this can be used as a hash table
* free function.
*/
void
pe__free_digests(gpointer ptr)
{
op_digest_cache_t *data = ptr;
if (data != NULL) {
free_xml(data->params_all);
free_xml(data->params_secure);
free_xml(data->params_restart);
free(data->digest_all_calc);
free(data->digest_restart_calc);
free(data->digest_secure_calc);
free(data);
}
}
// Return true if XML attribute name is substring of a given string
static bool
attr_in_string(xmlAttrPtr a, void *user_data)
{
bool filter = false;
char *name = crm_strdup_printf(" %s ", (const char *) a->name);
if (strstr((const char *) user_data, name) == NULL) {
crm_trace("Filtering %s (not found in '%s')",
(const char *) a->name, (const char *) user_data);
filter = true;
}
free(name);
return filter;
}
// Return true if XML attribute name is not substring of a given string
static bool
attr_not_in_string(xmlAttrPtr a, void *user_data)
{
bool filter = false;
char *name = crm_strdup_printf(" %s ", (const char *) a->name);
if (strstr((const char *) user_data, name) != NULL) {
crm_trace("Filtering %s (found in '%s')",
(const char *) a->name, (const char *) user_data);
filter = true;
}
free(name);
return filter;
}
#if ENABLE_VERSIONED_ATTRS
static void
append_versioned_params(xmlNode *versioned_params, const char *ra_version, xmlNode *params)
{
GHashTable *hash = pe_unpack_versioned_parameters(versioned_params, ra_version);
char *key = NULL;
char *value = NULL;
GHashTableIter iter;
g_hash_table_iter_init(&iter, hash);
while (g_hash_table_iter_next(&iter, (gpointer *) &key, (gpointer *) &value)) {
crm_xml_add(params, key, value);
}
g_hash_table_destroy(hash);
}
static void
append_all_versioned_params(pe_resource_t *rsc, pe_node_t *node,
pe_action_t *action, xmlNode *xml_op,
pe_working_set_t *data_set)
{
const char *ra_version = NULL;
xmlNode *local_versioned_params = NULL;
pe_rsc_action_details_t *details = pe_rsc_action_details(action);
local_versioned_params = create_xml_node(NULL, XML_TAG_RSC_VER_ATTRS);
pe_get_versioned_attributes(local_versioned_params, rsc, node, data_set);
if (xml_op != NULL) {
ra_version = crm_element_value(xml_op, XML_ATTR_RA_VERSION);
}
append_versioned_params(local_versioned_params, ra_version,
data->params_all);
append_versioned_params(rsc->versioned_parameters, ra_version,
data->params_all);
append_versioned_params(details->versioned_parameters, ra_version,
data->params_all);
}
#endif
/*!
* \internal
* \brief Add digest of all parameters to a digest cache entry
*
* \param[out] data Digest cache entry to modify
* \param[in] rsc Resource that action was for
* \param[in] node Node action was performed on
* \param[in] params Resource parameters evaluated for node
* \param[in] task Name of action performed
* \param[in,out] interval_ms Action's interval (will be reset if in overrides)
* \param[in] xml_op XML of operation in CIB status (if available)
* \param[in] op_version CRM feature set to use for digest calculation
* \param[in] overrides Key/value table to override resource parameters
* \param[in] data_set Cluster working set
*/
static void
calculate_main_digest(op_digest_cache_t *data, pe_resource_t *rsc,
pe_node_t *node, GHashTable *params,
const char *task, guint *interval_ms,
xmlNode *xml_op, const char *op_version,
GHashTable *overrides, pe_working_set_t *data_set)
{
pe_action_t *action = NULL;
data->params_all = create_xml_node(NULL, XML_TAG_PARAMS);
/* REMOTE_CONTAINER_HACK: Allow Pacemaker Remote nodes to run containers
* that themselves are Pacemaker Remote nodes
*/
if (pe__add_bundle_remote_name(rsc, data_set, data->params_all,
XML_RSC_ATTR_REMOTE_RA_ADDR)) {
crm_trace("Set address for bundle connection %s (on %s)",
rsc->id, node->details->uname);
}
// If interval was overridden, reset it
if (overrides != NULL) {
const char *interval_s = g_hash_table_lookup(overrides, CRM_META "_"
XML_LRM_ATTR_INTERVAL);
if (interval_s != NULL) {
long long value_ll;
if ((pcmk__scan_ll(interval_s, &value_ll, 0LL) == pcmk_rc_ok)
&& (value_ll >= 0) && (value_ll <= G_MAXUINT)) {
*interval_ms = (guint) value_ll;
}
}
}
action = custom_action(rsc, pcmk__op_key(rsc->id, task, *interval_ms),
task, node, TRUE, FALSE, data_set);
if (overrides != NULL) {
g_hash_table_foreach(overrides, hash2field, data->params_all);
}
g_hash_table_foreach(params, hash2field, data->params_all);
g_hash_table_foreach(action->extra, hash2field, data->params_all);
g_hash_table_foreach(action->meta, hash2metafield, data->params_all);
#if ENABLE_VERSIONED_ATTRS
append_all_versioned_params(rsc, node, action, xml_op, data_set);
#endif
pcmk__filter_op_for_digest(data->params_all);
+ /* Given a non-recurring operation with extra parameters configured,
+ * in case that the main digest doesn't match, even if the restart
+ * digest matches, enforce a restart rather than a reload-agent anyway.
+ * So that it ensures any changes of the extra parameters get applied
+ * for this specific operation, and the digests calculated for the
+ * resulting lrm_rsc_op will be correct.
+ * Mark the implied rc RSC_DIGEST_RESTART for the case that the main
+ * digest doesn't match.
+ */
+ if (*interval_ms == 0
+ && g_hash_table_size(action->extra) > 0) {
+ data->rc = RSC_DIGEST_RESTART;
+ }
+
pe_free_action(action);
data->digest_all_calc = calculate_operation_digest(data->params_all,
op_version);
}
// Return true if XML attribute name is a Pacemaker-defined fencing parameter
static bool
is_fence_param(xmlAttrPtr attr, void *user_data)
{
return pcmk_stonith_param((const char *) attr->name);
}
/*!
* \internal
* \brief Add secure digest to a digest cache entry
*
* \param[out] data Digest cache entry to modify
* \param[in] rsc Resource that action was for
* \param[in] params Resource parameters evaluated for node
* \param[in] xml_op XML of operation in CIB status (if available)
* \param[in] op_version CRM feature set to use for digest calculation
* \param[in] overrides Key/value hash table to override resource parameters
*/
static void
calculate_secure_digest(op_digest_cache_t *data, pe_resource_t *rsc,
GHashTable *params, xmlNode *xml_op,
const char *op_version, GHashTable *overrides)
{
const char *class = crm_element_value(rsc->xml, XML_AGENT_ATTR_CLASS);
const char *secure_list = NULL;
if (xml_op == NULL) {
secure_list = " passwd password user ";
} else {
secure_list = crm_element_value(xml_op, XML_LRM_ATTR_OP_SECURE);
}
data->params_secure = create_xml_node(NULL, XML_TAG_PARAMS);
if (overrides != NULL) {
g_hash_table_foreach(overrides, hash2field, data->params_secure);
}
g_hash_table_foreach(params, hash2field, data->params_secure);
if (secure_list != NULL) {
pcmk__xe_remove_matching_attrs(data->params_secure, attr_not_in_string,
(void *) secure_list);
}
if (pcmk_is_set(pcmk_get_ra_caps(class),
pcmk_ra_cap_fence_params)) {
/* For stonith resources, Pacemaker adds special parameters,
* but these are not listed in fence agent meta-data, so the
* controller will not hash them. That means we have to filter
* them out before calculating our hash for comparison.
*/
pcmk__xe_remove_matching_attrs(data->params_secure, is_fence_param,
NULL);
}
pcmk__filter_op_for_digest(data->params_secure);
/* CRM_meta_timeout *should* be part of a digest for recurring operations.
* However, currently the controller does not add timeout to secure digests,
* because it only includes parameters declared by the resource agent.
* Remove any timeout that made it this far, to match.
*
* @TODO Update the controller to add the timeout (which will require
* bumping the feature set and checking that here).
*/
xml_remove_prop(data->params_secure, CRM_META "_" XML_ATTR_TIMEOUT);
data->digest_secure_calc = calculate_operation_digest(data->params_secure,
op_version);
}
/*!
* \internal
* \brief Add restart digest to a digest cache entry
*
* \param[out] data Digest cache entry to modify
* \param[in] xml_op XML of operation in CIB status (if available)
* \param[in] op_version CRM feature set to use for digest calculation
*
* \note This function doesn't need to handle overrides because it starts with
* data->params_all, which already has overrides applied.
*/
static void
calculate_restart_digest(op_digest_cache_t *data, xmlNode *xml_op,
const char *op_version)
{
const char *value = NULL;
// We must have XML of resource operation history
if (xml_op == NULL) {
return;
}
// And the history must have a restart digest to compare against
if (crm_element_value(xml_op, XML_LRM_ATTR_RESTART_DIGEST) == NULL) {
return;
}
// Start with a copy of all parameters
data->params_restart = copy_xml(data->params_all);
// Then filter out reloadable parameters, if any
value = crm_element_value(xml_op, XML_LRM_ATTR_OP_RESTART);
if (value != NULL) {
pcmk__xe_remove_matching_attrs(data->params_restart, attr_in_string,
(void *) value);
}
value = crm_element_value(xml_op, XML_ATTR_CRM_VERSION);
data->digest_restart_calc = calculate_operation_digest(data->params_restart,
value);
}
/*!
* \internal
* \brief Create a new digest cache entry with calculated digests
*
* \param[in] rsc Resource that action was for
* \param[in] task Name of action performed
* \param[in,out] interval_ms Action's interval (will be reset if in overrides)
* \param[in] node Node action was performed on
* \param[in] xml_op XML of operation in CIB status (if available)
* \param[in] overrides Key/value table to override resource parameters
* \param[in] calc_secure Whether to calculate secure digest
* \param[in] data_set Cluster working set
*
* \return Pointer to new digest cache entry (or NULL on memory error)
* \note It is the caller's responsibility to free the result using
* pe__free_digests().
*/
op_digest_cache_t *
pe__calculate_digests(pe_resource_t *rsc, const char *task, guint *interval_ms,
pe_node_t *node, xmlNode *xml_op, GHashTable *overrides,
bool calc_secure, pe_working_set_t *data_set)
{
op_digest_cache_t *data = calloc(1, sizeof(op_digest_cache_t));
const char *op_version = CRM_FEATURE_SET;
GHashTable *params = NULL;
if (data == NULL) {
return NULL;
}
+
+ data->rc = RSC_DIGEST_MATCH;
+
if (xml_op != NULL) {
op_version = crm_element_value(xml_op, XML_ATTR_CRM_VERSION);
}
params = pe_rsc_params(rsc, node, data_set);
calculate_main_digest(data, rsc, node, params, task, interval_ms, xml_op,
op_version, overrides, data_set);
if (calc_secure) {
calculate_secure_digest(data, rsc, params, xml_op, op_version,
overrides);
}
calculate_restart_digest(data, xml_op, op_version);
return data;
}
/*!
* \internal
* \brief Calculate action digests and store in node's digest cache
*
* \param[in] rsc Resource that action was for
* \param[in] task Name of action performed
* \param[in] interval_ms Action's interval
* \param[in] node Node action was performed on
* \param[in] xml_op XML of operation in CIB status (if available)
* \param[in] calc_secure Whether to calculate secure digest
* \param[in] data_set Cluster working set
*
* \return Pointer to node's digest cache entry
*/
static op_digest_cache_t *
rsc_action_digest(pe_resource_t *rsc, const char *task, guint interval_ms,
pe_node_t *node, xmlNode *xml_op, bool calc_secure,
pe_working_set_t *data_set)
{
op_digest_cache_t *data = NULL;
char *key = pcmk__op_key(rsc->id, task, interval_ms);
data = g_hash_table_lookup(node->details->digest_cache, key);
if (data == NULL) {
data = pe__calculate_digests(rsc, task, &interval_ms, node, xml_op,
NULL, calc_secure, data_set);
CRM_ASSERT(data != NULL);
g_hash_table_insert(node->details->digest_cache, strdup(key), data);
}
free(key);
return data;
}
/*!
* \internal
* \brief Calculate operation digests and compare against an XML history entry
*
* \param[in] rsc Resource to check
* \param[in] xml_op Resource history XML
* \param[in] node Node to use for digest calculation
* \param[in] data_set Cluster working set
*
* \return Pointer to node's digest cache entry, with comparison result set
*/
op_digest_cache_t *
rsc_action_digest_cmp(pe_resource_t * rsc, xmlNode * xml_op, pe_node_t * node,
pe_working_set_t * data_set)
{
op_digest_cache_t *data = NULL;
guint interval_ms = 0;
const char *op_version;
const char *task = crm_element_value(xml_op, XML_LRM_ATTR_TASK);
const char *digest_all;
const char *digest_restart;
CRM_ASSERT(node != NULL);
op_version = crm_element_value(xml_op, XML_ATTR_CRM_VERSION);
digest_all = crm_element_value(xml_op, XML_LRM_ATTR_OP_DIGEST);
digest_restart = crm_element_value(xml_op, XML_LRM_ATTR_RESTART_DIGEST);
crm_element_value_ms(xml_op, XML_LRM_ATTR_INTERVAL_MS, &interval_ms);
data = rsc_action_digest(rsc, task, interval_ms, node, xml_op,
pcmk_is_set(data_set->flags, pe_flag_sanitized),
data_set);
- data->rc = RSC_DIGEST_MATCH;
if (digest_restart && data->digest_restart_calc && strcmp(data->digest_restart_calc, digest_restart) != 0) {
pe_rsc_info(rsc, "Parameters to %ums-interval %s action for %s on %s "
"changed: hash was %s vs. now %s (restart:%s) %s",
interval_ms, task, rsc->id, node->details->uname,
pcmk__s(digest_restart, "missing"),
data->digest_restart_calc,
op_version,
crm_element_value(xml_op, XML_ATTR_TRANSITION_MAGIC));
data->rc = RSC_DIGEST_RESTART;
} else if (digest_all == NULL) {
/* it is unknown what the previous op digest was */
data->rc = RSC_DIGEST_UNKNOWN;
} else if (strcmp(digest_all, data->digest_all_calc) != 0) {
- pe_rsc_info(rsc, "Parameters to %ums-interval %s action for %s on %s "
- "changed: hash was %s vs. now %s (%s:%s) %s",
- interval_ms, task, rsc->id, node->details->uname,
- pcmk__s(digest_all, "missing"), data->digest_all_calc,
- (interval_ms > 0)? "reschedule" : "reload",
- op_version,
- crm_element_value(xml_op, XML_ATTR_TRANSITION_MAGIC));
- data->rc = RSC_DIGEST_ALL;
+ /* Given a non-recurring operation with extra parameters configured,
+ * in case that the main digest doesn't match, even if the restart
+ * digest matches, enforce a restart rather than a reload-agent anyway.
+ * So that it ensures any changes of the extra parameters get applied
+ * for this specific operation, and the digests calculated for the
+ * resulting lrm_rsc_op will be correct.
+ * Preserve the implied rc RSC_DIGEST_RESTART for the case that the main
+ * digest doesn't match.
+ */
+ if (interval_ms == 0
+ && data->rc == RSC_DIGEST_RESTART) {
+ pe_rsc_info(rsc, "Parameters containing extra ones to %ums-interval"
+ " %s action for %s on %s "
+ "changed: hash was %s vs. now %s (restart:%s) %s",
+ interval_ms, task, rsc->id, node->details->uname,
+ pcmk__s(digest_all, "missing"), data->digest_all_calc,
+ op_version,
+ crm_element_value(xml_op, XML_ATTR_TRANSITION_MAGIC));
+
+ } else {
+ pe_rsc_info(rsc, "Parameters to %ums-interval %s action for %s on %s "
+ "changed: hash was %s vs. now %s (%s:%s) %s",
+ interval_ms, task, rsc->id, node->details->uname,
+ pcmk__s(digest_all, "missing"), data->digest_all_calc,
+ (interval_ms > 0)? "reschedule" : "reload",
+ op_version,
+ crm_element_value(xml_op, XML_ATTR_TRANSITION_MAGIC));
+ data->rc = RSC_DIGEST_ALL;
+ }
+
+ } else {
+ data->rc = RSC_DIGEST_MATCH;
}
return data;
}
/*!
* \internal
* \brief Create an unfencing summary for use in special node attribute
*
* Create a string combining a fence device's resource ID, agent type, and
* parameter digest (whether for all parameters or just non-private parameters).
* This can be stored in a special node attribute, allowing us to detect changes
* in either the agent type or parameters, to know whether unfencing must be
* redone or can be safely skipped when the device's history is cleaned.
*
* \param[in] rsc_id Fence device resource ID
* \param[in] agent_type Fence device agent
* \param[in] param_digest Fence device parameter digest
*
* \return Newly allocated string with unfencing digest
* \note The caller is responsible for freeing the result.
*/
static inline char *
create_unfencing_summary(const char *rsc_id, const char *agent_type,
const char *param_digest)
{
return crm_strdup_printf("%s:%s:%s", rsc_id, agent_type, param_digest);
}
/*!
* \internal
* \brief Check whether a node can skip unfencing
*
* Check whether a fence device's current definition matches a node's
* stored summary of when it was last unfenced by the device.
*
* \param[in] rsc_id Fence device's resource ID
* \param[in] agent Fence device's agent type
* \param[in] digest_calc Fence device's current parameter digest
* \param[in] node_summary Value of node's special unfencing node attribute
* (a comma-separated list of unfencing summaries for
* all devices that have unfenced this node)
*
* \return TRUE if digest matches, FALSE otherwise
*/
static bool
unfencing_digest_matches(const char *rsc_id, const char *agent,
const char *digest_calc, const char *node_summary)
{
bool matches = FALSE;
if (rsc_id && agent && digest_calc && node_summary) {
char *search_secure = create_unfencing_summary(rsc_id, agent,
digest_calc);
/* The digest was calculated including the device ID and agent,
* so there is no risk of collision using strstr().
*/
matches = (strstr(node_summary, search_secure) != NULL);
crm_trace("Calculated unfencing digest '%s' %sfound in '%s'",
search_secure, matches? "" : "not ", node_summary);
free(search_secure);
}
return matches;
}
/* Magic string to use as action name for digest cache entries used for
* unfencing checks. This is not a real action name (i.e. "on"), so
* pcmk__check_action_config() won't confuse these entries with real actions.
*/
#define STONITH_DIGEST_TASK "stonith-on"
/*!
* \internal
* \brief Calculate fence device digests and digest comparison result
*
* \param[in] rsc Fence device resource
* \param[in] agent Fence device's agent type
* \param[in] node Node with digest cache to use
* \param[in] data_set Cluster working set
*
* \return Node's digest cache entry
*/
op_digest_cache_t *
pe__compare_fencing_digest(pe_resource_t *rsc, const char *agent,
pe_node_t *node, pe_working_set_t *data_set)
{
const char *node_summary = NULL;
// Calculate device's current parameter digests
op_digest_cache_t *data = rsc_action_digest(rsc, STONITH_DIGEST_TASK, 0U,
node, NULL, TRUE, data_set);
// Check whether node has special unfencing summary node attribute
node_summary = pe_node_attribute_raw(node, CRM_ATTR_DIGESTS_ALL);
if (node_summary == NULL) {
data->rc = RSC_DIGEST_UNKNOWN;
return data;
}
// Check whether full parameter digest matches
if (unfencing_digest_matches(rsc->id, agent, data->digest_all_calc,
node_summary)) {
data->rc = RSC_DIGEST_MATCH;
return data;
}
// Check whether secure parameter digest matches
node_summary = pe_node_attribute_raw(node, CRM_ATTR_DIGESTS_SECURE);
if (unfencing_digest_matches(rsc->id, agent, data->digest_secure_calc,
node_summary)) {
data->rc = RSC_DIGEST_MATCH;
if (!pcmk__is_daemon && data_set->priv != NULL) {
pcmk__output_t *out = data_set->priv;
out->info(out, "Only 'private' parameters to %s "
"for unfencing %s changed", rsc->id,
node->details->uname);
}
return data;
}
// Parameters don't match
data->rc = RSC_DIGEST_ALL;
if (pcmk_is_set(data_set->flags, pe_flag_sanitized) && data->digest_secure_calc) {
if (data_set->priv != NULL) {
pcmk__output_t *out = data_set->priv;
char *digest = create_unfencing_summary(rsc->id, agent,
data->digest_secure_calc);
out->info(out, "Parameters to %s for unfencing "
"%s changed, try '%s'", rsc->id,
node->details->uname, digest);
free(digest);
} else if (!pcmk__is_daemon) {
char *digest = create_unfencing_summary(rsc->id, agent,
data->digest_secure_calc);
printf("Parameters to %s for unfencing %s changed, try '%s'\n",
rsc->id, node->details->uname, digest);
free(digest);
}
}
return data;
}

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