Page MenuHomeClusterLabs Projects
Files F3687276

No OneTemporary
Actions

View Options

diff --git a/daemons/execd/pacemaker-execd.c b/daemons/execd/pacemaker-execd.c
index c435b53a6e..926e278b46 100644
--- a/daemons/execd/pacemaker-execd.c
+++ b/daemons/execd/pacemaker-execd.c
@@ -1,583 +1,587 @@
/*
* Copyright 2012-2024 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.
*/
#include <crm_internal.h>
#include <glib.h>
#include <signal.h>
#include <sys/types.h>
#include <crm/crm.h>
#include <crm/common/xml.h>
#include <crm/services.h>
#include <crm/common/cmdline_internal.h>
#include <crm/common/ipc.h>
#include <crm/common/ipc_internal.h>
#include <crm/common/mainloop.h>
#include <crm/common/output_internal.h>
#include <crm/common/remote_internal.h>
#include <crm/lrmd_internal.h>
#include "pacemaker-execd.h"
#ifdef PCMK__COMPILE_REMOTE
# define EXECD_TYPE "remote"
# define EXECD_NAME "pacemaker-remoted"
# define SUMMARY "resource agent executor daemon for Pacemaker Remote nodes"
#else
# define EXECD_TYPE "local"
# define EXECD_NAME "pacemaker-execd"
# define SUMMARY "resource agent executor daemon for Pacemaker cluster nodes"
#endif
static GMainLoop *mainloop = NULL;
static qb_ipcs_service_t *ipcs = NULL;
static stonith_t *stonith_api = NULL;
int lrmd_call_id = 0;
time_t start_time;
static struct {
gchar **log_files;
#ifdef PCMK__COMPILE_REMOTE
gchar *port;
#endif // PCMK__COMPILE_REMOTE
} options;
#ifdef PCMK__COMPILE_REMOTE
/* whether shutdown request has been sent */
static gboolean shutting_down = FALSE;
/* timer for waiting for acknowledgment of shutdown request */
static guint shutdown_ack_timer = 0;
static gboolean lrmd_exit(gpointer data);
#endif
static void
stonith_connection_destroy_cb(stonith_t * st, stonith_event_t * e)
{
stonith_api->state = stonith_disconnected;
stonith_connection_failed();
}
stonith_t *
get_stonith_connection(void)
{
if (stonith_api && stonith_api->state == stonith_disconnected) {
stonith_api_delete(stonith_api);
stonith_api = NULL;
}
if (stonith_api == NULL) {
int rc = pcmk_ok;
stonith_api = stonith_api_new();
if (stonith_api == NULL) {
crm_err("Could not connect to fencer: API memory allocation failed");
return NULL;
}
rc = stonith_api_connect_retry(stonith_api, crm_system_name, 10);
if (rc != pcmk_ok) {
crm_err("Could not connect to fencer in 10 attempts: %s "
CRM_XS " rc=%d", pcmk_strerror(rc), rc);
stonith_api_delete(stonith_api);
stonith_api = NULL;
} else {
stonith_api_operations_t *cmds = stonith_api->cmds;
cmds->register_notification(stonith_api,
PCMK__VALUE_ST_NOTIFY_DISCONNECT,
stonith_connection_destroy_cb);
}
}
return stonith_api;
}
static int32_t
lrmd_ipc_accept(qb_ipcs_connection_t * c, uid_t uid, gid_t gid)
{
crm_trace("Connection %p", c);
if (pcmk__new_client(c, uid, gid) == NULL) {
return -ENOMEM;
}
return 0;
}
static void
lrmd_ipc_created(qb_ipcs_connection_t * c)
{
pcmk__client_t *new_client = pcmk__find_client(c);
crm_trace("Connection %p", c);
CRM_ASSERT(new_client != NULL);
/* Now that the connection is offically established, alert
* the other clients a new connection exists. */
notify_of_new_client(new_client);
}
static int32_t
lrmd_ipc_dispatch(qb_ipcs_connection_t * c, void *data, size_t size)
{
uint32_t id = 0;
uint32_t flags = 0;
pcmk__client_t *client = pcmk__find_client(c);
xmlNode *request = pcmk__client_data2xml(client, data, &id, &flags);
CRM_CHECK(client != NULL, crm_err("Invalid client");
return FALSE);
CRM_CHECK(client->id != NULL, crm_err("Invalid client: %p", client);
return FALSE);
CRM_CHECK(flags & crm_ipc_client_response, crm_err("Invalid client request: %p", client);
return FALSE);
if (!request) {
return 0;
}
if (!client->name) {
const char *value = crm_element_value(request,
PCMK__XA_LRMD_CLIENTNAME);
if (value == NULL) {
client->name = pcmk__itoa(pcmk__client_pid(c));
} else {
client->name = pcmk__str_copy(value);
}
}
lrmd_call_id++;
if (lrmd_call_id < 1) {
lrmd_call_id = 1;
}
crm_xml_add(request, PCMK__XA_LRMD_CLIENTID, client->id);
crm_xml_add(request, PCMK__XA_LRMD_CLIENTNAME, client->name);
crm_xml_add_int(request, PCMK__XA_LRMD_CALLID, lrmd_call_id);
process_lrmd_message(client, id, request);
free_xml(request);
return 0;
}
/*!
* \internal
* \brief Free a client connection, and exit if appropriate
*
* \param[in,out] client Client connection to free
*/
void
lrmd_client_destroy(pcmk__client_t *client)
{
pcmk__free_client(client);
#ifdef PCMK__COMPILE_REMOTE
/* If we were waiting to shut down, we can now safely do so
* if there are no more proxied IPC providers
*/
if (shutting_down && (ipc_proxy_get_provider() == NULL)) {
lrmd_exit(NULL);
}
#endif
}
static int32_t
lrmd_ipc_closed(qb_ipcs_connection_t * c)
{
pcmk__client_t *client = pcmk__find_client(c);
if (client == NULL) {
return 0;
}
crm_trace("Connection %p", c);
client_disconnect_cleanup(client->id);
#ifdef PCMK__COMPILE_REMOTE
ipc_proxy_remove_provider(client);
#endif
lrmd_client_destroy(client);
return 0;
}
static void
lrmd_ipc_destroy(qb_ipcs_connection_t * c)
{
lrmd_ipc_closed(c);
crm_trace("Connection %p", c);
}
static struct qb_ipcs_service_handlers lrmd_ipc_callbacks = {
.connection_accept = lrmd_ipc_accept,
.connection_created = lrmd_ipc_created,
.msg_process = lrmd_ipc_dispatch,
.connection_closed = lrmd_ipc_closed,
.connection_destroyed = lrmd_ipc_destroy
};
// \return Standard Pacemaker return code
int
lrmd_server_send_reply(pcmk__client_t *client, uint32_t id, xmlNode *reply)
{
crm_trace("Sending reply (%d) to client (%s)", id, client->id);
switch (PCMK__CLIENT_TYPE(client)) {
case pcmk__client_ipc:
return pcmk__ipc_send_xml(client, id, reply, FALSE);
#ifdef PCMK__COMPILE_REMOTE
case pcmk__client_tls:
return lrmd__remote_send_xml(client->remote, reply, id, "reply");
#endif
default:
crm_err("Could not send reply: unknown type for client %s "
CRM_XS " flags=%#llx",
pcmk__client_name(client), client->flags);
}
return ENOTCONN;
}
// \return Standard Pacemaker return code
int
lrmd_server_send_notify(pcmk__client_t *client, xmlNode *msg)
{
crm_trace("Sending notification to client (%s)", client->id);
switch (PCMK__CLIENT_TYPE(client)) {
case pcmk__client_ipc:
if (client->ipcs == NULL) {
crm_trace("Could not notify local client: disconnected");
return ENOTCONN;
}
return pcmk__ipc_send_xml(client, 0, msg, crm_ipc_server_event);
#ifdef PCMK__COMPILE_REMOTE
case pcmk__client_tls:
if (client->remote == NULL) {
crm_trace("Could not notify remote client: disconnected");
return ENOTCONN;
} else {
return lrmd__remote_send_xml(client->remote, msg, 0, "notify");
}
#endif
default:
crm_err("Could not notify client %s with unknown transport "
CRM_XS " flags=%#llx",
pcmk__client_name(client), client->flags);
}
return ENOTCONN;
}
/*!
* \internal
* \brief Clean up and exit immediately
*
* \param[in] data Ignored
*
* \return Doesn't return
* \note This can be used as a timer callback.
*/
static gboolean
lrmd_exit(gpointer data)
{
crm_info("Terminating with %d clients", pcmk__ipc_client_count());
stonith_api_delete(stonith_api);
if (ipcs) {
mainloop_del_ipc_server(ipcs);
}
#ifdef PCMK__COMPILE_REMOTE
execd_stop_tls_server();
ipc_proxy_cleanup();
#endif
pcmk__client_cleanup();
g_hash_table_destroy(rsc_list);
if (mainloop) {
lrmd_drain_alerts(mainloop);
}
crm_exit(CRM_EX_OK);
return FALSE;
}
/*!
* \internal
* \brief Request cluster shutdown if appropriate, otherwise exit immediately
*
* \param[in] nsig Signal that caused invocation (ignored)
*/
static void
lrmd_shutdown(int nsig)
{
#ifdef PCMK__COMPILE_REMOTE
pcmk__client_t *ipc_proxy = ipc_proxy_get_provider();
/* If there are active proxied IPC providers, then we may be running
* resources, so notify the cluster that we wish to shut down.
*/
if (ipc_proxy) {
if (shutting_down) {
crm_notice("Waiting for cluster to stop resources before exiting");
return;
}
crm_info("Sending shutdown request to cluster");
if (ipc_proxy_shutdown_req(ipc_proxy) < 0) {
crm_crit("Shutdown request failed, exiting immediately");
} else {
/* We requested a shutdown. Now, we need to wait for an
* acknowledgement from the proxy host (which ensures the proxy host
* supports shutdown requests), then wait for all proxy hosts to
* disconnect (which ensures that all resources have been stopped).
*/
shutting_down = TRUE;
/* Stop accepting new proxy connections */
execd_stop_tls_server();
/* Older controller versions will never acknowledge our request, so
* set a fairly short timeout to exit quickly in that case. If we
* get the ack, we'll defuse this timer.
*/
shutdown_ack_timer = g_timeout_add_seconds(20, lrmd_exit, NULL);
/* Currently, we let the OS kill us if the clients don't disconnect
* in a reasonable time. We could instead set a long timer here
* (shorter than what the OS is likely to use) and exit immediately
* if it pops.
*/
return;
}
}
#endif
lrmd_exit(NULL);
}
/*!
* \internal
* \brief Defuse short exit timer if shutting down
*/
void
handle_shutdown_ack(void)
{
#ifdef PCMK__COMPILE_REMOTE
if (shutting_down) {
crm_info("Received shutdown ack");
if (shutdown_ack_timer > 0) {
g_source_remove(shutdown_ack_timer);
shutdown_ack_timer = 0;
}
return;
}
#endif
crm_debug("Ignoring unexpected shutdown ack");
}
/*!
* \internal
* \brief Make short exit timer fire immediately
*/
void
handle_shutdown_nack(void)
{
#ifdef PCMK__COMPILE_REMOTE
if (shutting_down) {
crm_info("Received shutdown nack");
if (shutdown_ack_timer > 0) {
g_source_remove(shutdown_ack_timer);
shutdown_ack_timer = g_timeout_add(0, lrmd_exit, NULL);
}
return;
}
#endif
crm_debug("Ignoring unexpected shutdown nack");
}
static GOptionEntry entries[] = {
{ "logfile", 'l', G_OPTION_FLAG_NONE, G_OPTION_ARG_FILENAME_ARRAY,
&options.log_files, "Send logs to the additional named logfile", NULL },
#ifdef PCMK__COMPILE_REMOTE
{ "port", 'p', G_OPTION_FLAG_NONE, G_OPTION_ARG_STRING, &options.port,
"Port to listen on (defaults to " G_STRINGIFY(DEFAULT_REMOTE_PORT) ")", NULL },
#endif // PCMK__COMPILE_REMOTE
{ NULL }
};
static pcmk__supported_format_t formats[] = {
PCMK__SUPPORTED_FORMAT_NONE,
PCMK__SUPPORTED_FORMAT_TEXT,
PCMK__SUPPORTED_FORMAT_XML,
{ NULL, NULL, NULL }
};
static GOptionContext *
build_arg_context(pcmk__common_args_t *args, GOptionGroup **group)
{
GOptionContext *context = NULL;
context = pcmk__build_arg_context(args, "text (default), xml", group, NULL);
pcmk__add_main_args(context, entries);
return context;
}
int
main(int argc, char **argv, char **envp)
{
int rc = pcmk_rc_ok;
crm_exit_t exit_code = CRM_EX_OK;
const char *option = NULL;
pcmk__output_t *out = NULL;
GError *error = NULL;
GOptionGroup *output_group = NULL;
- pcmk__common_args_t *args = pcmk__new_common_args(SUMMARY);
-#ifdef PCMK__COMPILE_REMOTE
- gchar **processed_args = pcmk__cmdline_preproc(argv, "lp");
-#else
- gchar **processed_args = pcmk__cmdline_preproc(argv, "l");
-#endif // PCMK__COMPILE_REMOTE
- GOptionContext *context = build_arg_context(args, &output_group);
+ pcmk__common_args_t *args = NULL;
+ gchar **processed_args = NULL;
+ GOptionContext *context = NULL;
#ifdef PCMK__COMPILE_REMOTE
// If necessary, create PID 1 now before any file descriptors are opened
remoted_spawn_pidone(argc, argv, envp);
#endif
+ args = pcmk__new_common_args(SUMMARY);
+#ifdef PCMK__COMPILE_REMOTE
+ processed_args = pcmk__cmdline_preproc(argv, "lp");
+#else
+ processed_args = pcmk__cmdline_preproc(argv, "l");
+#endif // PCMK__COMPILE_REMOTE
+ context = build_arg_context(args, &output_group);
+
crm_log_preinit(EXECD_NAME, argc, argv);
pcmk__register_formats(output_group, formats);
if (!g_option_context_parse_strv(context, &processed_args, &error)) {
exit_code = CRM_EX_USAGE;
goto done;
}
rc = pcmk__output_new(&out, args->output_ty, args->output_dest, argv);
if (rc != pcmk_rc_ok) {
exit_code = CRM_EX_ERROR;
g_set_error(&error, PCMK__EXITC_ERROR, exit_code,
"Error creating output format %s: %s",
args->output_ty, pcmk_rc_str(rc));
goto done;
}
if (args->version) {
out->version(out, false);
goto done;
}
// Open additional log files
if (options.log_files != NULL) {
for (gchar **fname = options.log_files; *fname != NULL; fname++) {
rc = pcmk__add_logfile(*fname);
if (rc != pcmk_rc_ok) {
out->err(out, "Logging to %s is disabled: %s",
*fname, pcmk_rc_str(rc));
}
}
}
pcmk__cli_init_logging(EXECD_NAME, args->verbosity);
crm_log_init(NULL, LOG_INFO, TRUE, FALSE, argc, argv, FALSE);
// ocf_log() (in resource-agents) uses the capitalized env options below
option = pcmk__env_option(PCMK__ENV_LOGFACILITY);
if (!pcmk__str_eq(option, PCMK_VALUE_NONE,
pcmk__str_casei|pcmk__str_null_matches)
&& !pcmk__str_eq(option, "/dev/null", pcmk__str_none)) {
pcmk__set_env_option("LOGFACILITY", option, true);
}
option = pcmk__env_option(PCMK__ENV_LOGFILE);
if (!pcmk__str_eq(option, PCMK_VALUE_NONE,
pcmk__str_casei|pcmk__str_null_matches)) {
pcmk__set_env_option("LOGFILE", option, true);
if (pcmk__env_option_enabled(crm_system_name, PCMK__ENV_DEBUG)) {
pcmk__set_env_option("DEBUGLOG", option, true);
}
}
#ifdef PCMK__COMPILE_REMOTE
if (options.port != NULL) {
pcmk__set_env_option(PCMK__ENV_REMOTE_PORT, options.port, false);
}
#endif // PCMK__COMPILE_REMOTE
start_time = time(NULL);
crm_notice("Starting Pacemaker " EXECD_TYPE " executor");
/* The presence of this variable allegedly controls whether child
* processes like httpd will try and use Systemd's sd_notify
* API
*/
unsetenv("NOTIFY_SOCKET");
{
// Temporary directory for resource agent use (leave owned by root)
int rc = pcmk__build_path(CRM_RSCTMP_DIR, 0755);
if (rc != pcmk_rc_ok) {
crm_warn("Could not create resource agent temporary directory "
CRM_RSCTMP_DIR ": %s", pcmk_rc_str(rc));
}
}
rsc_list = pcmk__strkey_table(NULL, free_rsc);
ipcs = mainloop_add_ipc_server(CRM_SYSTEM_LRMD, QB_IPC_SHM, &lrmd_ipc_callbacks);
if (ipcs == NULL) {
crm_err("Failed to create IPC server: shutting down and inhibiting respawn");
exit_code = CRM_EX_FATAL;
goto done;
}
#ifdef PCMK__COMPILE_REMOTE
if (lrmd_init_remote_tls_server() < 0) {
crm_err("Failed to create TLS listener: shutting down and staying down");
exit_code = CRM_EX_FATAL;
goto done;
}
ipc_proxy_init();
#endif
mainloop_add_signal(SIGTERM, lrmd_shutdown);
mainloop = g_main_loop_new(NULL, FALSE);
crm_notice("Pacemaker " EXECD_TYPE " executor successfully started and accepting connections");
crm_notice("OCF resource agent search path is %s", OCF_RA_PATH);
g_main_loop_run(mainloop);
/* should never get here */
lrmd_exit(NULL);
done:
g_strfreev(options.log_files);
#ifdef PCMK__COMPILE_REMOTE
g_free(options.port);
#endif // PCMK__COMPILE_REMOTE
g_strfreev(processed_args);
pcmk__free_arg_context(context);
pcmk__output_and_clear_error(&error, out);
if (out != NULL) {
out->finish(out, exit_code, true, NULL);
pcmk__output_free(out);
}
pcmk__unregister_formats();
crm_exit(exit_code);
}

File Metadata

Mime Type
text/x-diff
Expires
Mon, Apr 21, 7:09 PM (16 h, 48 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
1660214
Default Alt Text
(17 KB)

Event Timeline