diff --git a/tools/crm_mon.c b/tools/crm_mon.c
index 1a2064e27c..1f6e93be82 100644
--- a/tools/crm_mon.c
+++ b/tools/crm_mon.c
@@ -1,2069 +1,2066 @@
/*
* 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 General Public License version 2
* or later (GPLv2+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <sys/param.h>
#include <crm/crm.h>
#include <stdint.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <libgen.h>
#include <signal.h>
#include <sys/utsname.h>
#include <crm/msg_xml.h>
#include <crm/services.h>
#include <crm/lrmd.h>
#include <crm/common/cmdline_internal.h>
#include <crm/common/internal.h> // pcmk__ends_with_ext()
#include <crm/common/ipc.h>
#include <crm/common/mainloop.h>
#include <crm/common/output.h>
#include <crm/common/output_internal.h>
#include <crm/common/results.h>
#include <crm/common/util.h>
#include <crm/common/xml.h>
#include <crm/common/xml_internal.h>
#include <crm/cib/internal.h>
#include <crm/pengine/status.h>
#include <crm/pengine/internal.h>
#include <pacemaker-internal.h>
#include <crm/stonith-ng.h>
#include <crm/fencing/internal.h>
#include "crm_mon.h"
#define SUMMARY "Provides a summary of cluster's current state.\n\n" \
"Outputs varying levels of detail in a number of different formats."
/*
* Definitions indicating which items to print
*/
static uint32_t show;
static uint32_t show_opts = pcmk_show_pending;
/*
* Definitions indicating how to output
*/
static mon_output_format_t output_format = mon_output_unset;
/* other globals */
static GIOChannel *io_channel = NULL;
static GMainLoop *mainloop = NULL;
static guint reconnect_timer = 0;
static mainloop_timer_t *refresh_timer = NULL;
static enum pcmk_pacemakerd_state pcmkd_state = pcmk_pacemakerd_state_invalid;
static cib_t *cib = NULL;
static stonith_t *st = NULL;
static xmlNode *current_cib = NULL;
static GError *error = NULL;
static pcmk__common_args_t *args = NULL;
static pcmk__output_t *out = NULL;
static GOptionContext *context = NULL;
static gchar **processed_args = NULL;
static time_t last_refresh = 0;
volatile crm_trigger_t *refresh_trigger = NULL;
static enum pcmk__fence_history fence_history = pcmk__fence_history_none;
int interactive_fence_level = 0;
static pcmk__supported_format_t formats[] = {
#if CURSES_ENABLED
CRM_MON_SUPPORTED_FORMAT_CURSES,
#endif
PCMK__SUPPORTED_FORMAT_HTML,
PCMK__SUPPORTED_FORMAT_NONE,
PCMK__SUPPORTED_FORMAT_TEXT,
PCMK__SUPPORTED_FORMAT_XML,
{ NULL, NULL, NULL }
};
/* Define exit codes for monitoring-compatible output
* For nagios plugins, the possibilities are
* OK=0, WARN=1, CRIT=2, and UNKNOWN=3
*/
#define MON_STATUS_WARN CRM_EX_ERROR
#define MON_STATUS_CRIT CRM_EX_INVALID_PARAM
#define MON_STATUS_UNKNOWN CRM_EX_UNIMPLEMENT_FEATURE
#define RECONNECT_MSECS 5000
struct {
guint reconnect_ms;
gboolean daemonize;
gboolean fence_connect;
gboolean one_shot;
gboolean print_pending;
gboolean show_bans;
gboolean watch_fencing;
char *pid_file;
char *external_agent;
char *external_recipient;
char *neg_location_prefix;
char *only_node;
char *only_rsc;
GSList *user_includes_excludes;
GSList *includes_excludes;
} options = {
.fence_connect = TRUE,
.reconnect_ms = RECONNECT_MSECS
};
static crm_exit_t clean_up(crm_exit_t exit_code);
static void crm_diff_update(const char *event, xmlNode * msg);
static void clean_up_on_connection_failure(int rc);
static int mon_refresh_display(gpointer user_data);
static int setup_cib_connection(void);
static int setup_fencer_connection(void);
static int setup_api_connections(void);
static void mon_st_callback_event(stonith_t * st, stonith_event_t * e);
static void mon_st_callback_display(stonith_t * st, stonith_event_t * e);
static void refresh_after_event(gboolean data_updated, gboolean enforce);
static uint32_t
all_includes(mon_output_format_t fmt) {
if (fmt == mon_output_monitor || fmt == mon_output_plain || fmt == mon_output_console) {
return ~pcmk_section_options;
} else {
return pcmk_section_all;
}
}
static uint32_t
default_includes(mon_output_format_t fmt) {
switch (fmt) {
case mon_output_monitor:
case mon_output_plain:
case mon_output_console:
case mon_output_html:
case mon_output_cgi:
return pcmk_section_summary
|pcmk_section_nodes
|pcmk_section_resources
|pcmk_section_failures;
case mon_output_xml:
case mon_output_legacy_xml:
return all_includes(fmt);
default:
return 0;
}
}
struct {
const char *name;
uint32_t bit;
} sections[] = {
{ "attributes", pcmk_section_attributes },
{ "bans", pcmk_section_bans },
{ "counts", pcmk_section_counts },
{ "dc", pcmk_section_dc },
{ "failcounts", pcmk_section_failcounts },
{ "failures", pcmk_section_failures },
{ PCMK__VALUE_FENCING, pcmk_section_fencing_all },
{ "fencing-failed", pcmk_section_fence_failed },
{ "fencing-pending", pcmk_section_fence_pending },
{ "fencing-succeeded", pcmk_section_fence_worked },
{ "maint-mode", pcmk_section_maint_mode },
{ "nodes", pcmk_section_nodes },
{ "operations", pcmk_section_operations },
{ "options", pcmk_section_options },
{ "resources", pcmk_section_resources },
{ "stack", pcmk_section_stack },
{ "summary", pcmk_section_summary },
{ "tickets", pcmk_section_tickets },
{ "times", pcmk_section_times },
{ NULL }
};
static uint32_t
find_section_bit(const char *name) {
for (int i = 0; sections[i].name != NULL; i++) {
if (pcmk__str_eq(sections[i].name, name, pcmk__str_casei)) {
return sections[i].bit;
}
}
return 0;
}
static gboolean
apply_exclude(const gchar *excludes, GError **error) {
char **parts = NULL;
gboolean result = TRUE;
parts = g_strsplit(excludes, ",", 0);
for (char **s = parts; *s != NULL; s++) {
uint32_t bit = find_section_bit(*s);
if (pcmk__str_eq(*s, "all", pcmk__str_none)) {
show = 0;
} else if (pcmk__str_eq(*s, PCMK__VALUE_NONE, pcmk__str_none)) {
show = all_includes(output_format);
} else if (bit != 0) {
show &= ~bit;
} else {
g_set_error(error, PCMK__EXITC_ERROR, CRM_EX_USAGE,
"--exclude options: all, attributes, bans, counts, dc, "
"failcounts, failures, fencing, fencing-failed, "
"fencing-pending, fencing-succeeded, maint-mode, nodes, "
PCMK__VALUE_NONE ", operations, options, resources, "
"stack, summary, tickets, times");
result = FALSE;
break;
}
}
g_strfreev(parts);
return result;
}
static gboolean
apply_include(const gchar *includes, GError **error) {
char **parts = NULL;
gboolean result = TRUE;
parts = g_strsplit(includes, ",", 0);
for (char **s = parts; *s != NULL; s++) {
uint32_t bit = find_section_bit(*s);
if (pcmk__str_eq(*s, "all", pcmk__str_none)) {
show = all_includes(output_format);
} else if (pcmk__starts_with(*s, "bans")) {
show |= pcmk_section_bans;
if (options.neg_location_prefix != NULL) {
free(options.neg_location_prefix);
options.neg_location_prefix = NULL;
}
if (strlen(*s) > 4 && (*s)[4] == ':') {
options.neg_location_prefix = strdup(*s+5);
}
} else if (pcmk__str_any_of(*s, "default", "defaults", NULL)) {
show |= default_includes(output_format);
} else if (pcmk__str_eq(*s, PCMK__VALUE_NONE, pcmk__str_none)) {
show = 0;
} else if (bit != 0) {
show |= bit;
} else {
g_set_error(error, PCMK__EXITC_ERROR, CRM_EX_USAGE,
"--include options: all, attributes, bans[:PREFIX], counts, dc, "
"default, failcounts, failures, fencing, fencing-failed, "
"fencing-pending, fencing-succeeded, maint-mode, nodes, "
PCMK__VALUE_NONE ", operations, options, resources, "
"stack, summary, tickets, times");
result = FALSE;
break;
}
}
g_strfreev(parts);
return result;
}
static gboolean
apply_include_exclude(GSList *lst, GError **error) {
gboolean rc = TRUE;
GSList *node = lst;
while (node != NULL) {
char *s = node->data;
if (pcmk__starts_with(s, "--include=")) {
rc = apply_include(s+10, error);
} else if (pcmk__starts_with(s, "-I=")) {
rc = apply_include(s+3, error);
} else if (pcmk__starts_with(s, "--exclude=")) {
rc = apply_exclude(s+10, error);
} else if (pcmk__starts_with(s, "-U=")) {
rc = apply_exclude(s+3, error);
}
if (rc != TRUE) {
break;
}
node = node->next;
}
return rc;
}
static gboolean
user_include_exclude_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
char *s = crm_strdup_printf("%s=%s", option_name, optarg);
options.user_includes_excludes = g_slist_append(options.user_includes_excludes, s);
return TRUE;
}
static gboolean
include_exclude_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
char *s = crm_strdup_printf("%s=%s", option_name, optarg);
options.includes_excludes = g_slist_append(options.includes_excludes, s);
return TRUE;
}
static gboolean
as_cgi_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
pcmk__str_update(&args->output_ty, "html");
output_format = mon_output_cgi;
options.one_shot = TRUE;
return TRUE;
}
static gboolean
as_html_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
pcmk__str_update(&args->output_dest, optarg);
pcmk__str_update(&args->output_ty, "html");
output_format = mon_output_html;
umask(S_IWGRP | S_IWOTH);
return TRUE;
}
static gboolean
as_simple_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
pcmk__str_update(&args->output_ty, "text");
output_format = mon_output_monitor;
options.one_shot = TRUE;
return TRUE;
}
static gboolean
as_xml_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
pcmk__str_update(&args->output_ty, "xml");
output_format = mon_output_legacy_xml;
return TRUE;
}
static gboolean
fence_history_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
if (optarg == NULL) {
interactive_fence_level = 2;
} else {
pcmk__scan_min_int(optarg, &interactive_fence_level, 0);
}
switch (interactive_fence_level) {
case 3:
options.fence_connect = TRUE;
fence_history = pcmk__fence_history_full;
return include_exclude_cb("--include", PCMK__VALUE_FENCING, data,
err);
case 2:
options.fence_connect = TRUE;
fence_history = pcmk__fence_history_full;
return include_exclude_cb("--include", PCMK__VALUE_FENCING, data,
err);
case 1:
options.fence_connect = TRUE;
fence_history = pcmk__fence_history_full;
return include_exclude_cb("--include", "fencing-failed,fencing-pending", data, err);
case 0:
options.fence_connect = FALSE;
fence_history = pcmk__fence_history_none;
return include_exclude_cb("--exclude", PCMK__VALUE_FENCING, data,
err);
default:
g_set_error(err, PCMK__EXITC_ERROR, CRM_EX_INVALID_PARAM, "Fence history must be 0-3");
return FALSE;
}
}
static gboolean
group_by_node_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
show_opts |= pcmk_show_rscs_by_node;
return TRUE;
}
static gboolean
hide_headers_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
return user_include_exclude_cb("--exclude", "summary", data, err);
}
static gboolean
inactive_resources_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
show_opts |= pcmk_show_inactive_rscs;
return TRUE;
}
static gboolean
no_curses_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
output_format = mon_output_plain;
return TRUE;
}
static gboolean
print_brief_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
show_opts |= pcmk_show_brief;
return TRUE;
}
static gboolean
print_detail_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
show_opts |= pcmk_show_details;
return TRUE;
}
static gboolean
print_timing_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
show_opts |= pcmk_show_timing;
return user_include_exclude_cb("--include", "operations", data, err);
}
static gboolean
reconnect_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
int rc = crm_get_msec(optarg);
if (rc == -1) {
g_set_error(err, PCMK__EXITC_ERROR, CRM_EX_INVALID_PARAM, "Invalid value for -i: %s", optarg);
return FALSE;
} else {
options.reconnect_ms = crm_parse_interval_spec(optarg);
}
return TRUE;
}
static gboolean
show_attributes_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
return user_include_exclude_cb("--include", "attributes", data, err);
}
static gboolean
show_bans_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
if (optarg != NULL) {
char *s = crm_strdup_printf("bans:%s", optarg);
gboolean rc = user_include_exclude_cb("--include", s, data, err);
free(s);
return rc;
} else {
return user_include_exclude_cb("--include", "bans", data, err);
}
}
static gboolean
show_failcounts_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
return user_include_exclude_cb("--include", "failcounts", data, err);
}
static gboolean
show_operations_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
return user_include_exclude_cb("--include", "failcounts,operations", data, err);
}
static gboolean
show_tickets_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
return user_include_exclude_cb("--include", "tickets", data, err);
}
static gboolean
use_cib_file_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
setenv("CIB_file", optarg, 1);
options.one_shot = TRUE;
return TRUE;
}
#define INDENT " "
/* *INDENT-OFF* */
static GOptionEntry addl_entries[] = {
{ "interval", 'i', 0, G_OPTION_ARG_CALLBACK, reconnect_cb,
"Update frequency (default is 5 seconds)",
"TIMESPEC" },
{ "one-shot", '1', 0, G_OPTION_ARG_NONE, &options.one_shot,
"Display the cluster status once on the console and exit",
NULL },
{ "daemonize", 'd', 0, G_OPTION_ARG_NONE, &options.daemonize,
"Run in the background as a daemon.\n"
INDENT "Requires at least one of --output-to and --external-agent.",
NULL },
{ "pid-file", 'p', 0, G_OPTION_ARG_FILENAME, &options.pid_file,
"(Advanced) Daemon pid file location",
"FILE" },
{ "external-agent", 'E', 0, G_OPTION_ARG_FILENAME, &options.external_agent,
"A program to run when resource operations take place",
"FILE" },
{ "external-recipient", 'e', 0, G_OPTION_ARG_STRING, &options.external_recipient,
"A recipient for your program (assuming you want the program to send something to someone).",
"RCPT" },
{ "watch-fencing", 'W', 0, G_OPTION_ARG_NONE, &options.watch_fencing,
"Listen for fencing events. For use with --external-agent.",
NULL },
{ "xml-file", 'x', G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_CALLBACK, use_cib_file_cb,
NULL,
NULL },
{ NULL }
};
static GOptionEntry display_entries[] = {
{ "include", 'I', 0, G_OPTION_ARG_CALLBACK, user_include_exclude_cb,
"A list of sections to include in the output.\n"
INDENT "See `Output Control` help for more information.",
"SECTION(s)" },
{ "exclude", 'U', 0, G_OPTION_ARG_CALLBACK, user_include_exclude_cb,
"A list of sections to exclude from the output.\n"
INDENT "See `Output Control` help for more information.",
"SECTION(s)" },
{ "node", 0, 0, G_OPTION_ARG_STRING, &options.only_node,
"When displaying information about nodes, show only what's related to the given\n"
INDENT "node, or to all nodes tagged with the given tag",
"NODE" },
{ "resource", 0, 0, G_OPTION_ARG_STRING, &options.only_rsc,
"When displaying information about resources, show only what's related to the given\n"
INDENT "resource, or to all resources tagged with the given tag",
"RSC" },
{ "group-by-node", 'n', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, group_by_node_cb,
"Group resources by node",
NULL },
{ "inactive", 'r', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, inactive_resources_cb,
"Display inactive resources",
NULL },
{ "failcounts", 'f', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, show_failcounts_cb,
"Display resource fail counts",
NULL },
{ "operations", 'o', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, show_operations_cb,
"Display resource operation history",
NULL },
{ "timing-details", 't', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, print_timing_cb,
"Display resource operation history with timing details",
NULL },
{ "tickets", 'c', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, show_tickets_cb,
"Display cluster tickets",
NULL },
{ "fence-history", 'm', G_OPTION_FLAG_OPTIONAL_ARG, G_OPTION_ARG_CALLBACK, fence_history_cb,
"Show fence history:\n"
INDENT "0=off, 1=failures and pending (default without option),\n"
INDENT "2=add successes (default without value for option),\n"
INDENT "3=show full history without reduction to most recent of each flavor",
"LEVEL" },
{ "neg-locations", 'L', G_OPTION_FLAG_OPTIONAL_ARG, G_OPTION_ARG_CALLBACK, show_bans_cb,
"Display negative location constraints [optionally filtered by id prefix]",
NULL },
{ "show-node-attributes", 'A', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, show_attributes_cb,
"Display node attributes",
NULL },
{ "hide-headers", 'D', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, hide_headers_cb,
"Hide all headers",
NULL },
{ "show-detail", 'R', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, print_detail_cb,
"Show more details (node IDs, individual clone instances)",
NULL },
{ "brief", 'b', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, print_brief_cb,
"Brief output",
NULL },
{ "pending", 'j', G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_NONE, &options.print_pending,
"Display pending state if 'record-pending' is enabled",
NULL },
{ "simple-status", 's', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, as_simple_cb,
"Display the cluster status once as a simple one line output (suitable for nagios)",
NULL },
{ NULL }
};
static GOptionEntry deprecated_entries[] = {
{ "as-html", 'h', G_OPTION_FLAG_FILENAME, G_OPTION_ARG_CALLBACK, as_html_cb,
"Write cluster status to the named HTML file.\n"
INDENT "Use --output-as=html --output-to=FILE instead.",
"FILE" },
{ "as-xml", 'X', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, as_xml_cb,
"Write cluster status as XML to stdout. This will enable one-shot mode.\n"
INDENT "Use --output-as=xml instead.",
NULL },
{ "disable-ncurses", 'N', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, no_curses_cb,
"Disable the use of ncurses.\n"
INDENT "Use --output-as=text instead.",
NULL },
{ "web-cgi", 'w', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, as_cgi_cb,
"Web mode with output suitable for CGI (preselected when run as *.cgi).\n"
INDENT "Use --output-as=html --html-cgi instead.",
NULL },
{ NULL }
};
/* *INDENT-ON* */
/* Reconnect to the CIB and fencing agent after reconnect_ms has passed. This sounds
* like it would be more broadly useful, but only ever happens after a disconnect via
* mon_cib_connection_destroy.
*/
static gboolean
reconnect_after_timeout(gpointer data)
{
#if CURSES_ENABLED
if (output_format == mon_output_console) {
clear();
refresh();
}
#endif
out->info(out, "Reconnecting...");
if (setup_api_connections() == pcmk_rc_ok) {
// Trigger redrawing the screen (needs reconnect_timer == 0)
reconnect_timer = 0;
refresh_after_event(FALSE, TRUE);
return G_SOURCE_REMOVE;
}
reconnect_timer = g_timeout_add(options.reconnect_ms,
reconnect_after_timeout, NULL);
return G_SOURCE_REMOVE;
}
/* Called from various places when we are disconnected from the CIB or from the
* fencing agent. If the CIB connection is still valid, this function will also
* attempt to sign off and reconnect.
*/
static void
mon_cib_connection_destroy(gpointer user_data)
{
out->info(out, "Connection to the cluster-daemons terminated");
if (refresh_timer != NULL) {
/* we'll trigger a refresh after reconnect */
mainloop_timer_stop(refresh_timer);
}
if (reconnect_timer) {
/* we'll trigger a new reconnect-timeout at the end */
g_source_remove(reconnect_timer);
reconnect_timer = 0;
}
/* the client API won't properly reconnect notifications if they are still
* in the table - so remove them
*/
stonith_api_delete(st);
st = NULL;
if (cib) {
cib->cmds->signoff(cib);
reconnect_timer = g_timeout_add(options.reconnect_ms,
reconnect_after_timeout, NULL);
}
return;
}
/* Signal handler installed into the mainloop for normal program shutdown */
static void
mon_shutdown(int nsig)
{
clean_up(CRM_EX_OK);
}
#if CURSES_ENABLED
static volatile sighandler_t ncurses_winch_handler;
/* Signal handler installed the regular way (not into the main loop) for when
* the screen is resized. Commonly, this happens when running in an xterm and
* the user changes its size.
*/
static void
mon_winresize(int nsig)
{
static int not_done;
int lines = 0, cols = 0;
if (!not_done++) {
if (ncurses_winch_handler)
/* the original ncurses WINCH signal handler does the
* magic of retrieving the new window size;
* otherwise, we'd have to use ioctl or tgetent */
(*ncurses_winch_handler) (SIGWINCH);
getmaxyx(stdscr, lines, cols);
resizeterm(lines, cols);
/* Alert the mainloop code we'd like the refresh_trigger to run next
* time the mainloop gets around to checking.
*/
mainloop_set_trigger((crm_trigger_t *) refresh_trigger);
}
not_done--;
}
#endif
static int
setup_fencer_connection(void)
{
int rc = pcmk_ok;
if (options.fence_connect && st == NULL) {
st = stonith_api_new();
}
if (!options.fence_connect || st == NULL || st->state != stonith_disconnected) {
return rc;
}
rc = st->cmds->connect(st, crm_system_name, NULL);
if (rc == pcmk_ok) {
crm_trace("Setting up stonith callbacks");
if (options.watch_fencing) {
st->cmds->register_notification(st, T_STONITH_NOTIFY_DISCONNECT,
mon_st_callback_event);
st->cmds->register_notification(st, T_STONITH_NOTIFY_FENCE, mon_st_callback_event);
} else {
st->cmds->register_notification(st, T_STONITH_NOTIFY_DISCONNECT,
mon_st_callback_display);
st->cmds->register_notification(st, T_STONITH_NOTIFY_HISTORY, mon_st_callback_display);
}
} else {
stonith_api_delete(st);
st = NULL;
}
return rc;
}
static int
setup_cib_connection(void)
{
int rc = pcmk_rc_ok;
CRM_CHECK(cib != NULL, return EINVAL);
if (cib->state != cib_disconnected) {
// Already connected with notifications registered for CIB updates
return rc;
}
rc = cib__signon_query(out, &cib, ¤t_cib);
if (rc == pcmk_rc_ok) {
rc = pcmk_legacy2rc(cib->cmds->set_connection_dnotify(cib,
mon_cib_connection_destroy));
if (rc == EPROTONOSUPPORT) {
out->err(out,
"Notification setup not supported, won't be "
"able to reconnect after failure");
- if (output_format == mon_output_console) {
- sleep(2);
- }
rc = pcmk_rc_ok;
}
if (rc == pcmk_rc_ok) {
cib->cmds->del_notify_callback(cib, T_CIB_DIFF_NOTIFY,
crm_diff_update);
rc = pcmk_legacy2rc(cib->cmds->add_notify_callback(cib,
T_CIB_DIFF_NOTIFY, crm_diff_update));
}
if (rc != pcmk_rc_ok) {
out->err(out, "Notification setup failed, could not monitor CIB actions");
cib__clean_up_connection(&cib);
stonith_api_delete(st);
st = NULL;
}
}
return rc;
}
/* This is used to set up the fencing options after the interactive UI has been stared.
* fence_history_cb can't be used because it builds up a list of includes/excludes that
* then have to be processed with apply_include_exclude and that could affect other
* things.
*/
static void
set_fencing_options(int level)
{
switch (level) {
case 3:
options.fence_connect = TRUE;
fence_history = pcmk__fence_history_full;
show |= pcmk_section_fencing_all;
break;
case 2:
options.fence_connect = TRUE;
fence_history = pcmk__fence_history_full;
show |= pcmk_section_fencing_all;
break;
case 1:
options.fence_connect = TRUE;
fence_history = pcmk__fence_history_full;
show |= pcmk_section_fence_failed | pcmk_section_fence_pending;
break;
default:
interactive_fence_level = 0;
options.fence_connect = FALSE;
fence_history = pcmk__fence_history_none;
show &= ~pcmk_section_fencing_all;
break;
}
}
static int
setup_api_connections(void)
{
int rc = pcmk_rc_ok;
time_t last_updated = 0;
CRM_CHECK(cib != NULL, return EINVAL);
if (cib->state != cib_disconnected) {
return rc;
}
if (cib->variant == cib_native) {
rc = pcmk__pacemakerd_status(out, crm_system_name,
options.reconnect_ms / 2, false,
&pcmkd_state);
if (rc != pcmk_rc_ok) {
return rc;
}
last_updated = time(NULL);
switch (pcmkd_state) {
case pcmk_pacemakerd_state_running:
case pcmk_pacemakerd_state_remote:
case pcmk_pacemakerd_state_shutting_down:
/* Fencer and CIB may still be available while shutting down or
* running on a Pacemaker Remote node
*/
break;
default:
// Fencer and CIB are definitely unavailable
out->message(out, "pacemakerd-health",
NULL, pcmkd_state, NULL, last_updated);
return ENOTCONN;
}
setup_fencer_connection();
}
rc = setup_cib_connection();
if ((rc != pcmk_rc_ok) && (pcmkd_state != pcmk_pacemakerd_state_invalid)) {
// Invalid at this point means we didn't query the pcmkd state
out->message(out, "pacemakerd-health",
NULL, pcmkd_state, NULL, last_updated);
}
return rc;
}
#if CURSES_ENABLED
static const char *
get_option_desc(char c)
{
const char *desc = "No help available";
for (GOptionEntry *entry = display_entries; entry != NULL; entry++) {
if (entry->short_name == c) {
desc = entry->description;
break;
}
}
return desc;
}
#define print_option_help(out, option, condition) \
curses_formatted_printf(out, "%c %c: \t%s\n", ((condition)? '*': ' '), option, get_option_desc(option));
/* This function is called from the main loop when there is something to be read
* on stdin, like an interactive user's keystroke. All it does is read the keystroke,
* set flags (or show the page showing which keystrokes are valid), and redraw the
* screen. It does not do anything with connections to the CIB or fencing agent
* agent what would happen in mon_refresh_display.
*/
static gboolean
detect_user_input(GIOChannel *channel, GIOCondition condition, gpointer user_data)
{
int c;
gboolean config_mode = FALSE;
while (1) {
/* Get user input */
c = getchar();
switch (c) {
case 'm':
interactive_fence_level++;
if (interactive_fence_level > 3) {
interactive_fence_level = 0;
}
set_fencing_options(interactive_fence_level);
break;
case 'c':
show ^= pcmk_section_tickets;
break;
case 'f':
show ^= pcmk_section_failcounts;
break;
case 'n':
show_opts ^= pcmk_show_rscs_by_node;
break;
case 'o':
show ^= pcmk_section_operations;
if (!pcmk_is_set(show, pcmk_section_operations)) {
show_opts &= ~pcmk_show_timing;
}
break;
case 'r':
show_opts ^= pcmk_show_inactive_rscs;
break;
case 'R':
show_opts ^= pcmk_show_details;
#ifdef PCMK__COMPAT_2_0
// Keep failed action output the same as 2.0.x
show_opts |= pcmk_show_failed_detail;
#endif
break;
case 't':
show_opts ^= pcmk_show_timing;
if (pcmk_is_set(show_opts, pcmk_show_timing)) {
show |= pcmk_section_operations;
}
break;
case 'A':
show ^= pcmk_section_attributes;
break;
case 'L':
show ^= pcmk_section_bans;
break;
case 'D':
/* If any header is shown, clear them all, otherwise set them all */
if (pcmk_any_flags_set(show, pcmk_section_summary)) {
show &= ~pcmk_section_summary;
} else {
show |= pcmk_section_summary;
}
/* Regardless, we don't show options in console mode. */
show &= ~pcmk_section_options;
break;
case 'b':
show_opts ^= pcmk_show_brief;
break;
case 'j':
show_opts ^= pcmk_show_pending;
break;
case '?':
config_mode = TRUE;
break;
default:
/* All other keys just redraw the screen. */
goto refresh;
}
if (!config_mode)
goto refresh;
clear();
refresh();
curses_formatted_printf(out, "%s", "Display option change mode\n");
print_option_help(out, 'c', pcmk_is_set(show, pcmk_section_tickets));
print_option_help(out, 'f', pcmk_is_set(show, pcmk_section_failcounts));
print_option_help(out, 'n', pcmk_is_set(show_opts, pcmk_show_rscs_by_node));
print_option_help(out, 'o', pcmk_is_set(show, pcmk_section_operations));
print_option_help(out, 'r', pcmk_is_set(show_opts, pcmk_show_inactive_rscs));
print_option_help(out, 't', pcmk_is_set(show_opts, pcmk_show_timing));
print_option_help(out, 'A', pcmk_is_set(show, pcmk_section_attributes));
print_option_help(out, 'L', pcmk_is_set(show, pcmk_section_bans));
print_option_help(out, 'D', !pcmk_is_set(show, pcmk_section_summary));
#ifdef PCMK__COMPAT_2_0
print_option_help(out, 'R', pcmk_any_flags_set(show_opts, pcmk_show_details & ~pcmk_show_failed_detail));
#else
print_option_help(out, 'R', pcmk_any_flags_set(show_opts, pcmk_show_details));
#endif
print_option_help(out, 'b', pcmk_is_set(show_opts, pcmk_show_brief));
print_option_help(out, 'j', pcmk_is_set(show_opts, pcmk_show_pending));
curses_formatted_printf(out, "%d m: \t%s\n", interactive_fence_level, get_option_desc('m'));
curses_formatted_printf(out, "%s", "\nToggle fields via field letter, type any other key to return\n");
}
refresh:
refresh_after_event(FALSE, TRUE);
return TRUE;
}
#endif // CURSES_ENABLED
// Basically crm_signal_handler(SIGCHLD, SIG_IGN) plus the SA_NOCLDWAIT flag
static void
avoid_zombies(void)
{
struct sigaction sa;
memset(&sa, 0, sizeof(struct sigaction));
if (sigemptyset(&sa.sa_mask) < 0) {
crm_warn("Cannot avoid zombies: %s", pcmk_rc_str(errno));
return;
}
sa.sa_handler = SIG_IGN;
sa.sa_flags = SA_RESTART|SA_NOCLDWAIT;
if (sigaction(SIGCHLD, &sa, NULL) < 0) {
crm_warn("Cannot avoid zombies: %s", pcmk_rc_str(errno));
}
}
static GOptionContext *
build_arg_context(pcmk__common_args_t *args, GOptionGroup **group) {
GOptionContext *context = NULL;
GOptionEntry extra_prog_entries[] = {
{ "quiet", 'Q', 0, G_OPTION_ARG_NONE, &(args->quiet),
"Be less descriptive in output.",
NULL },
{ NULL }
};
const char *description = "Notes:\n\n"
"If this program is called as crm_mon.cgi, --output-as=html --html-cgi will\n"
"automatically be added to the command line arguments.\n\n"
"Time Specification:\n\n"
"The TIMESPEC in any command line option can be specified in many different\n"
"formats. It can be just an integer number of seconds, a number plus units\n"
"(ms/msec/us/usec/s/sec/m/min/h/hr), or an ISO 8601 period specification.\n\n"
"Output Control:\n\n"
"By default, a certain list of sections are written to the output destination.\n"
"The default varies based on the output format - XML includes everything, while\n"
"other output formats will display less. This list can be modified with the\n"
"--include and --exclude command line options. Each option may be given multiple\n"
"times on the command line, and each can give a comma-separated list of sections.\n"
"The options are applied to the default set, from left to right as seen on the\n"
"command line. For a list of valid sections, pass --include=list or --exclude=list.\n\n"
"Interactive Use:\n\n"
"When run interactively, crm_mon can be told to hide and display various sections\n"
"of output. To see a help screen explaining the options, hit '?'. Any key stroke\n"
"aside from those listed will cause the screen to refresh.\n\n"
"Examples:\n\n"
"Display the cluster status on the console with updates as they occur:\n\n"
"\tcrm_mon\n\n"
"Display the cluster status on the console just once then exit:\n\n"
"\tcrm_mon -1\n\n"
"Display your cluster status, group resources by node, and include inactive resources in the list:\n\n"
"\tcrm_mon --group-by-node --inactive\n\n"
"Start crm_mon as a background daemon and have it write the cluster status to an HTML file:\n\n"
"\tcrm_mon --daemonize --output-as html --output-to /path/to/docroot/filename.html\n\n"
"Start crm_mon and export the current cluster status as XML to stdout, then exit:\n\n"
"\tcrm_mon --output-as xml\n\n";
#if CURSES_ENABLED
context = pcmk__build_arg_context(args, "console (default), html, text, xml", group, NULL);
#else
context = pcmk__build_arg_context(args, "text (default), html, xml", group, NULL);
#endif
pcmk__add_main_args(context, extra_prog_entries);
g_option_context_set_description(context, description);
pcmk__add_arg_group(context, "display", "Display Options:",
"Show display options", display_entries);
pcmk__add_arg_group(context, "additional", "Additional Options:",
"Show additional options", addl_entries);
pcmk__add_arg_group(context, "deprecated", "Deprecated Options:",
"Show deprecated options", deprecated_entries);
return context;
}
/* If certain format options were specified, we want to set some extra
* options. We can just process these like they were given on the
* command line.
*/
static void
add_output_args(void) {
GError *err = NULL;
if (output_format == mon_output_plain) {
if (!pcmk__force_args(context, &err, "%s --text-fancy", g_get_prgname())) {
g_propagate_error(&error, err);
clean_up(CRM_EX_USAGE);
}
} else if (output_format == mon_output_cgi) {
if (!pcmk__force_args(context, &err, "%s --html-cgi", g_get_prgname())) {
g_propagate_error(&error, err);
clean_up(CRM_EX_USAGE);
}
} else if (output_format == mon_output_xml) {
if (!pcmk__force_args(context, &err, "%s --xml-simple-list --xml-substitute", g_get_prgname())) {
g_propagate_error(&error, err);
clean_up(CRM_EX_USAGE);
}
} else if (output_format == mon_output_legacy_xml) {
output_format = mon_output_xml;
if (!pcmk__force_args(context, &err, "%s --xml-legacy --xml-substitute", g_get_prgname())) {
g_propagate_error(&error, err);
clean_up(CRM_EX_USAGE);
}
}
}
/* Which output format to use could come from two places: The --as-xml
* style arguments we gave in deprecated_entries above, or the formatted output
* arguments added by pcmk__register_formats. If the latter were used,
* output_format will be mon_output_unset.
*
* Call the callbacks as if those older style arguments were provided so
* the various things they do get done.
*/
static void
reconcile_output_format(pcmk__common_args_t *args) {
gboolean retval = TRUE;
GError *err = NULL;
if (output_format != mon_output_unset) {
return;
}
if (pcmk__str_eq(args->output_ty, "html", pcmk__str_casei)) {
char *dest = NULL;
pcmk__str_update(&dest, args->output_dest);
retval = as_html_cb("h", dest, NULL, &err);
free(dest);
} else if (pcmk__str_eq(args->output_ty, "text", pcmk__str_casei)) {
retval = no_curses_cb("N", NULL, NULL, &err);
} else if (pcmk__str_eq(args->output_ty, "xml", pcmk__str_casei)) {
pcmk__str_update(&args->output_ty, "xml");
output_format = mon_output_xml;
} else if (options.one_shot) {
pcmk__str_update(&args->output_ty, "text");
output_format = mon_output_plain;
} else if (!options.daemonize && args->output_dest != NULL) {
options.one_shot = TRUE;
pcmk__str_update(&args->output_ty, "text");
output_format = mon_output_plain;
} else {
/* Neither old nor new arguments were given, so set the default. */
pcmk__str_update(&args->output_ty, "console");
output_format = mon_output_console;
}
if (!retval) {
g_propagate_error(&error, err);
clean_up(CRM_EX_USAGE);
}
}
static void
clean_up_on_connection_failure(int rc)
{
if (output_format == mon_output_monitor) {
g_set_error(&error, PCMK__EXITC_ERROR, CRM_EX_ERROR, "CLUSTER CRIT: Connection to cluster failed: %s",
pcmk_rc_str(rc));
clean_up(MON_STATUS_CRIT);
} else if (rc == ENOTCONN) {
if (pcmkd_state == pcmk_pacemakerd_state_remote) {
g_set_error(&error, PCMK__EXITC_ERROR, CRM_EX_ERROR, "Error: remote-node not connected to cluster");
} else {
g_set_error(&error, PCMK__EXITC_ERROR, CRM_EX_ERROR, "Error: cluster is not available on this node");
}
} else {
g_set_error(&error, PCMK__EXITC_ERROR, CRM_EX_ERROR, "Connection to cluster failed: %s", pcmk_rc_str(rc));
}
clean_up(pcmk_rc2exitc(rc));
}
static void
one_shot(void)
{
int rc = pcmk__status(out, cib, fence_history, show, show_opts,
options.only_node, options.only_rsc,
options.neg_location_prefix,
output_format == mon_output_monitor, 0);
if (rc == pcmk_rc_ok) {
clean_up(pcmk_rc2exitc(rc));
} else {
clean_up_on_connection_failure(rc);
}
}
static void
exit_on_invalid_cib(void)
{
if (cib != NULL) {
return;
}
// Shouldn't really be possible
g_set_error(&error, PCMK__EXITC_ERROR, CRM_EX_ERROR, "Invalid CIB source");
clean_up(CRM_EX_ERROR);
}
int
main(int argc, char **argv)
{
int rc = pcmk_rc_ok;
GOptionGroup *output_group = NULL;
args = pcmk__new_common_args(SUMMARY);
context = build_arg_context(args, &output_group);
pcmk__register_formats(output_group, formats);
options.pid_file = strdup("/tmp/ClusterMon.pid");
pcmk__cli_init_logging("crm_mon", 0);
// Avoid needing to wait for subprocesses forked for -E/--external-agent
avoid_zombies();
if (pcmk__ends_with_ext(argv[0], ".cgi")) {
output_format = mon_output_cgi;
options.one_shot = TRUE;
}
processed_args = pcmk__cmdline_preproc(argv, "ehimpxEILU");
fence_history_cb("--fence-history", "1", NULL, NULL);
/* Set an HTML title regardless of what format we will eventually use. This can't
* be done in add_output_args. That function is called after command line
* arguments are processed in the next block, which means it'll override whatever
* title the user provides. Doing this here means the user can give their own
* title on the command line.
*/
if (!pcmk__force_args(context, &error, "%s --html-title \"Cluster Status\"",
g_get_prgname())) {
return clean_up(CRM_EX_USAGE);
}
if (!g_option_context_parse_strv(context, &processed_args, &error)) {
return clean_up(CRM_EX_USAGE);
}
for (int i = 0; i < args->verbosity; i++) {
crm_bump_log_level(argc, argv);
}
if (!args->version) {
if (args->quiet) {
include_exclude_cb("--exclude", "times", NULL, NULL);
}
if (options.watch_fencing) {
fence_history_cb("--fence-history", "0", NULL, NULL);
options.fence_connect = TRUE;
}
/* create the cib-object early to be able to do further
* decisions based on the cib-source
*/
cib = cib_new();
exit_on_invalid_cib();
switch (cib->variant) {
case cib_native:
// Everything (fencer, CIB, pcmkd status) should be available
break;
case cib_file:
// Live fence history is not meaningful
fence_history_cb("--fence-history", "0", NULL, NULL);
/* Notifications are unsupported; nothing to monitor
* @COMPAT: Let setup_cib_connection() handle this by exiting?
*/
options.one_shot = TRUE;
break;
case cib_remote:
// We won't receive any fencing updates
fence_history_cb("--fence-history", "0", NULL, NULL);
break;
case cib_undefined:
case cib_database:
default:
/* something is odd */
exit_on_invalid_cib();
break;
}
if (options.one_shot) {
if (output_format == mon_output_console) {
output_format = mon_output_plain;
}
} else if (options.daemonize) {
if (pcmk__str_eq(args->output_dest, "-", pcmk__str_null_matches|pcmk__str_casei) &&
!options.external_agent) {
g_set_error(&error, PCMK__EXITC_ERROR, CRM_EX_USAGE,
"--daemonize requires at least one of --output-to and --external-agent");
return clean_up(CRM_EX_USAGE);
}
} else if (output_format == mon_output_console) {
#if CURSES_ENABLED
crm_enable_stderr(FALSE);
#else
options.one_shot = TRUE;
output_format = mon_output_plain;
printf("Defaulting to one-shot mode\n");
printf("You need to have curses available at compile time to enable console mode\n");
#endif
}
}
reconcile_output_format(args);
add_output_args();
/* output_format MUST NOT BE CHANGED AFTER THIS POINT. */
if (args->version && output_format == mon_output_console) {
/* Use the text output format here if we are in curses mode but were given
* --version. Displaying version information uses printf, and then we
* immediately exit. We don't want to initialize curses for that.
*/
rc = pcmk__output_new(&out, "text", args->output_dest, argv);
} else {
rc = pcmk__output_new(&out, args->output_ty, args->output_dest, argv);
}
if (rc != pcmk_rc_ok) {
g_set_error(&error, PCMK__EXITC_ERROR, CRM_EX_ERROR, "Error creating output format %s: %s",
args->output_ty, pcmk_rc_str(rc));
return clean_up(CRM_EX_ERROR);
}
if (options.daemonize) {
if (!options.external_agent && (output_format == mon_output_console ||
output_format == mon_output_unset ||
output_format == mon_output_none)) {
g_set_error(&error, PCMK__EXITC_ERROR, CRM_EX_USAGE,
"--daemonize requires --output-as=[html|text|xml]");
return clean_up(CRM_EX_USAGE);
}
crm_enable_stderr(FALSE);
cib_delete(cib);
cib = NULL;
pcmk__daemonize(crm_system_name, options.pid_file);
cib = cib_new();
exit_on_invalid_cib();
}
show = default_includes(output_format);
/* Apply --include/--exclude flags we used internally. There's no error reporting
* here because this would be a programming error.
*/
apply_include_exclude(options.includes_excludes, &error);
/* And now apply any --include/--exclude flags the user gave on the command line.
* These are done in a separate pass from the internal ones because we want to
* make sure whatever the user specifies overrides whatever we do.
*/
if (!apply_include_exclude(options.user_includes_excludes, &error)) {
return clean_up(CRM_EX_USAGE);
}
/* Sync up the initial value of interactive_fence_level with whatever was set with
* --include/--exclude= options.
*/
if (pcmk_all_flags_set(show, pcmk_section_fencing_all)) {
interactive_fence_level = 3;
} else if (pcmk_is_set(show, pcmk_section_fence_worked)) {
interactive_fence_level = 2;
} else if (pcmk_any_flags_set(show, pcmk_section_fence_failed | pcmk_section_fence_pending)) {
interactive_fence_level = 1;
} else {
interactive_fence_level = 0;
}
pcmk__register_lib_messages(out);
crm_mon_register_messages(out);
pe__register_messages(out);
stonith__register_messages(out);
if (args->version) {
out->version(out, false);
return clean_up(CRM_EX_OK);
}
/* Extra sanity checks when in CGI mode */
if (output_format == mon_output_cgi) {
if (cib->variant == cib_file) {
g_set_error(&error, PCMK__EXITC_ERROR, CRM_EX_USAGE, "CGI mode used with CIB file");
return clean_up(CRM_EX_USAGE);
} else if (options.external_agent != NULL) {
g_set_error(&error, PCMK__EXITC_ERROR, CRM_EX_USAGE, "CGI mode cannot be used with --external-agent");
return clean_up(CRM_EX_USAGE);
} else if (options.daemonize == TRUE) {
g_set_error(&error, PCMK__EXITC_ERROR, CRM_EX_USAGE, "CGI mode cannot be used with -d");
return clean_up(CRM_EX_USAGE);
}
}
if (output_format == mon_output_xml || output_format == mon_output_legacy_xml) {
show_opts |= pcmk_show_inactive_rscs | pcmk_show_timing;
if (!options.daemonize) {
options.one_shot = TRUE;
}
}
if ((output_format == mon_output_html || output_format == mon_output_cgi) &&
out->dest != stdout) {
pcmk__html_add_header("meta", "http-equiv", "refresh", "content",
pcmk__itoa(options.reconnect_ms / 1000), NULL);
}
#ifdef PCMK__COMPAT_2_0
// Keep failed action output the same as 2.0.x
show_opts |= pcmk_show_failed_detail;
#endif
crm_info("Starting %s", crm_system_name);
cib__set_output(cib, out);
if (options.one_shot) {
one_shot();
}
do {
out->info(out,"Waiting until cluster is available on this node ...");
rc = setup_api_connections();
if (rc != pcmk_rc_ok) {
pcmk__sleep_ms(options.reconnect_ms);
#if CURSES_ENABLED
if (output_format == mon_output_console) {
clear();
refresh();
}
#endif
} else if (output_format == mon_output_html && out->dest != stdout) {
printf("Writing html to %s ...\n", args->output_dest);
}
} while ((rc == ENOTCONN) || (rc == ECONNREFUSED));
if (rc != pcmk_rc_ok) {
clean_up_on_connection_failure(rc);
}
set_fencing_options(interactive_fence_level);
mon_refresh_display(NULL);
mainloop = g_main_loop_new(NULL, FALSE);
mainloop_add_signal(SIGTERM, mon_shutdown);
mainloop_add_signal(SIGINT, mon_shutdown);
#if CURSES_ENABLED
if (output_format == mon_output_console) {
ncurses_winch_handler = crm_signal_handler(SIGWINCH, mon_winresize);
if (ncurses_winch_handler == SIG_DFL ||
ncurses_winch_handler == SIG_IGN || ncurses_winch_handler == SIG_ERR)
ncurses_winch_handler = NULL;
io_channel = g_io_channel_unix_new(STDIN_FILENO);
g_io_add_watch(io_channel, G_IO_IN, detect_user_input, NULL);
}
#endif
/* When refresh_trigger->trigger is set to TRUE, call mon_refresh_display. In
* this file, that is anywhere mainloop_set_trigger is called.
*/
refresh_trigger = mainloop_add_trigger(G_PRIORITY_LOW, mon_refresh_display, NULL);
g_main_loop_run(mainloop);
g_main_loop_unref(mainloop);
if (io_channel != NULL) {
g_io_channel_shutdown(io_channel, TRUE, NULL);
}
crm_info("Exiting %s", crm_system_name);
return clean_up(CRM_EX_OK);
}
static int
send_custom_trap(const char *node, const char *rsc, const char *task, int target_rc, int rc,
int status, const char *desc)
{
pid_t pid;
/*setenv needs chars, these are ints */
char *rc_s = pcmk__itoa(rc);
char *status_s = pcmk__itoa(status);
char *target_rc_s = pcmk__itoa(target_rc);
crm_debug("Sending external notification to '%s' via '%s'", options.external_recipient, options.external_agent);
if(rsc) {
setenv("CRM_notify_rsc", rsc, 1);
}
if (options.external_recipient) {
setenv("CRM_notify_recipient", options.external_recipient, 1);
}
setenv("CRM_notify_node", node, 1);
setenv("CRM_notify_task", task, 1);
setenv("CRM_notify_desc", desc, 1);
setenv("CRM_notify_rc", rc_s, 1);
setenv("CRM_notify_target_rc", target_rc_s, 1);
setenv("CRM_notify_status", status_s, 1);
pid = fork();
if (pid == -1) {
crm_perror(LOG_ERR, "notification fork() failed.");
}
if (pid == 0) {
/* crm_debug("notification: I am the child. Executing the nofitication program."); */
execl(options.external_agent, options.external_agent, NULL);
exit(CRM_EX_ERROR);
}
crm_trace("Finished running custom notification program '%s'.", options.external_agent);
free(target_rc_s);
free(status_s);
free(rc_s);
return 0;
}
static int
handle_rsc_op(xmlNode *xml, void *userdata)
{
const char *node_id = (const char *) userdata;
int rc = -1;
int status = -1;
int target_rc = -1;
gboolean notify = TRUE;
char *rsc = NULL;
char *task = NULL;
const char *desc = NULL;
const char *magic = NULL;
const char *id = NULL;
const char *node = NULL;
xmlNode *n = xml;
xmlNode * rsc_op = xml;
if(strcmp((const char*)xml->name, XML_LRM_TAG_RSC_OP) != 0) {
pcmk__xe_foreach_child(xml, NULL, handle_rsc_op, (void *) node_id);
return pcmk_rc_ok;
}
id = crm_element_value(rsc_op, XML_LRM_ATTR_TASK_KEY);
if (id == NULL) {
/* Compatibility with <= 1.1.5 */
id = ID(rsc_op);
}
magic = crm_element_value(rsc_op, XML_ATTR_TRANSITION_MAGIC);
if (magic == NULL) {
/* non-change */
return pcmk_rc_ok;
}
if (!decode_transition_magic(magic, NULL, NULL, NULL, &status, &rc,
&target_rc)) {
crm_err("Invalid event %s detected for %s", magic, id);
return pcmk_rc_ok;
}
if (parse_op_key(id, &rsc, &task, NULL) == FALSE) {
crm_err("Invalid event detected for %s", id);
goto bail;
}
node = crm_element_value(rsc_op, XML_LRM_ATTR_TARGET);
while (n != NULL && !pcmk__str_eq(XML_CIB_TAG_STATE, TYPE(n), pcmk__str_casei)) {
n = n->parent;
}
if(node == NULL && n) {
node = crm_element_value(n, XML_ATTR_UNAME);
}
if (node == NULL && n) {
node = ID(n);
}
if (node == NULL) {
node = node_id;
}
if (node == NULL) {
crm_err("No node detected for event %s (%s)", magic, id);
goto bail;
}
/* look up where we expected it to be? */
desc = pcmk_rc_str(pcmk_rc_ok);
if ((status == PCMK_EXEC_DONE) && (target_rc == rc)) {
crm_notice("%s of %s on %s completed: %s", task, rsc, node, desc);
if (rc == PCMK_OCF_NOT_RUNNING) {
notify = FALSE;
}
} else if (status == PCMK_EXEC_DONE) {
desc = services_ocf_exitcode_str(rc);
crm_warn("%s of %s on %s failed: %s", task, rsc, node, desc);
} else {
desc = pcmk_exec_status_str(status);
crm_warn("%s of %s on %s failed: %s", task, rsc, node, desc);
}
if (notify && options.external_agent) {
send_custom_trap(node, rsc, task, target_rc, rc, status, desc);
}
bail:
free(rsc);
free(task);
return pcmk_rc_ok;
}
/* This function is just a wrapper around mainloop_set_trigger so that it can be
* called from a mainloop directly. It's simply another way of ensuring the screen
* gets redrawn.
*/
static gboolean
mon_trigger_refresh(gpointer user_data)
{
mainloop_set_trigger((crm_trigger_t *) refresh_trigger);
return FALSE;
}
static int
handle_op_for_node(xmlNode *xml, void *userdata)
{
const char *node = crm_element_value(xml, XML_ATTR_UNAME);
if (node == NULL) {
node = ID(xml);
}
handle_rsc_op(xml, (void *) node);
return pcmk_rc_ok;
}
static void
crm_diff_update_v2(const char *event, xmlNode * msg)
{
xmlNode *change = NULL;
xmlNode *diff = get_message_xml(msg, F_CIB_UPDATE_RESULT);
for (change = pcmk__xml_first_child(diff); change != NULL;
change = pcmk__xml_next(change)) {
const char *name = NULL;
const char *op = crm_element_value(change, XML_DIFF_OP);
const char *xpath = crm_element_value(change, XML_DIFF_PATH);
xmlNode *match = NULL;
const char *node = NULL;
if(op == NULL) {
continue;
} else if(strcmp(op, "create") == 0) {
match = change->children;
} else if(strcmp(op, "move") == 0) {
continue;
} else if(strcmp(op, "delete") == 0) {
continue;
} else if(strcmp(op, "modify") == 0) {
match = first_named_child(change, XML_DIFF_RESULT);
if(match) {
match = match->children;
}
}
if(match) {
name = (const char *)match->name;
}
crm_trace("Handling %s operation for %s %p, %s", op, xpath, match, name);
if(xpath == NULL) {
/* Version field, ignore */
} else if(name == NULL) {
crm_debug("No result for %s operation to %s", op, xpath);
CRM_ASSERT(strcmp(op, "delete") == 0 || strcmp(op, "move") == 0);
} else if(strcmp(name, XML_TAG_CIB) == 0) {
pcmk__xe_foreach_child(first_named_child(match, XML_CIB_TAG_STATUS),
NULL, handle_op_for_node, NULL);
} else if(strcmp(name, XML_CIB_TAG_STATUS) == 0) {
pcmk__xe_foreach_child(match, NULL, handle_op_for_node, NULL);
} else if(strcmp(name, XML_CIB_TAG_STATE) == 0) {
node = crm_element_value(match, XML_ATTR_UNAME);
if (node == NULL) {
node = ID(match);
}
handle_rsc_op(match, (void *) node);
} else if(strcmp(name, XML_CIB_TAG_LRM) == 0) {
node = ID(match);
handle_rsc_op(match, (void *) node);
} else if(strcmp(name, XML_LRM_TAG_RESOURCES) == 0) {
char *local_node = pcmk__xpath_node_id(xpath, "lrm");
handle_rsc_op(match, local_node);
free(local_node);
} else if(strcmp(name, XML_LRM_TAG_RESOURCE) == 0) {
char *local_node = pcmk__xpath_node_id(xpath, "lrm");
handle_rsc_op(match, local_node);
free(local_node);
} else if(strcmp(name, XML_LRM_TAG_RSC_OP) == 0) {
char *local_node = pcmk__xpath_node_id(xpath, "lrm");
handle_rsc_op(match, local_node);
free(local_node);
} else {
crm_trace("Ignoring %s operation for %s %p, %s", op, xpath, match, name);
}
}
}
static void
crm_diff_update_v1(const char *event, xmlNode * msg)
{
/* Process operation updates */
xmlXPathObject *xpathObj = xpath_search(msg,
"//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED
"//" XML_LRM_TAG_RSC_OP);
int lpc = 0, max = numXpathResults(xpathObj);
for (lpc = 0; lpc < max; lpc++) {
xmlNode *rsc_op = getXpathResult(xpathObj, lpc);
handle_rsc_op(rsc_op, NULL);
}
freeXpathObject(xpathObj);
}
static void
crm_diff_update(const char *event, xmlNode * msg)
{
int rc = -1;
static bool stale = FALSE;
gboolean cib_updated = FALSE;
xmlNode *diff = get_message_xml(msg, F_CIB_UPDATE_RESULT);
out->progress(out, false);
if (current_cib != NULL) {
rc = xml_apply_patchset(current_cib, diff, TRUE);
switch (rc) {
case -pcmk_err_diff_resync:
case -pcmk_err_diff_failed:
crm_notice("[%s] Patch aborted: %s (%d)", event, pcmk_strerror(rc), rc);
free_xml(current_cib); current_cib = NULL;
break;
case pcmk_ok:
cib_updated = TRUE;
break;
default:
crm_notice("[%s] ABORTED: %s (%d)", event, pcmk_strerror(rc), rc);
free_xml(current_cib); current_cib = NULL;
}
}
if (current_cib == NULL) {
crm_trace("Re-requesting the full cib");
cib->cmds->query(cib, NULL, ¤t_cib, cib_scope_local | cib_sync_call);
}
if (options.external_agent) {
int format = 0;
crm_element_value_int(diff, "format", &format);
switch(format) {
case 1:
crm_diff_update_v1(event, msg);
break;
case 2:
crm_diff_update_v2(event, msg);
break;
default:
crm_err("Unknown patch format: %d", format);
}
}
if (current_cib == NULL) {
if(!stale) {
out->info(out, "--- Stale data ---");
}
stale = TRUE;
return;
}
stale = FALSE;
refresh_after_event(cib_updated, FALSE);
}
static int
mon_refresh_display(gpointer user_data)
{
int rc = pcmk_rc_ok;
last_refresh = time(NULL);
if (output_format == mon_output_none || output_format == mon_output_unset) {
return G_SOURCE_REMOVE;
}
if (fence_history == pcmk__fence_history_full &&
!pcmk_all_flags_set(show, pcmk_section_fencing_all) &&
output_format != mon_output_xml) {
fence_history = pcmk__fence_history_reduced;
}
// Get an up-to-date pacemakerd status for the cluster summary
if (cib->variant == cib_native) {
pcmk__pacemakerd_status(out, crm_system_name, options.reconnect_ms / 2,
false, &pcmkd_state);
}
if (out->dest != stdout) {
out->reset(out);
}
rc = pcmk__output_cluster_status(out, st, cib, current_cib, pcmkd_state,
fence_history, show, show_opts,
options.only_node,options.only_rsc,
options.neg_location_prefix,
output_format == mon_output_monitor);
if (output_format == mon_output_monitor && rc != pcmk_rc_ok) {
clean_up(MON_STATUS_WARN);
return G_SOURCE_REMOVE;
} else if (rc == pcmk_rc_schema_validation) {
clean_up(CRM_EX_CONFIG);
return G_SOURCE_REMOVE;
}
if (out->dest != stdout) {
out->finish(out, CRM_EX_OK, true, NULL);
}
return G_SOURCE_CONTINUE;
}
/* This function is called for fencing events (see setup_fencer_connection() for
* which ones) when --watch-fencing is used on the command line
*/
static void
mon_st_callback_event(stonith_t * st, stonith_event_t * e)
{
if (st->state == stonith_disconnected) {
/* disconnect cib as well and have everything reconnect */
mon_cib_connection_destroy(NULL);
} else if (options.external_agent) {
char *desc = stonith__event_description(e);
send_custom_trap(e->target, NULL, e->operation, pcmk_ok, e->result, 0, desc);
free(desc);
}
}
/* Cause the screen to be redrawn (via mainloop_set_trigger) when various conditions are met:
*
* - If the last update occurred more than reconnect_ms ago (defaults to 5s, but
* can be changed via the -i command line option), or
* - After every 10 CIB updates, or
* - If it's been 2s since the last update
*
* This function sounds like it would be more broadly useful, but it is only called when a
* fencing event is received or a CIB diff occurrs.
*/
static void
refresh_after_event(gboolean data_updated, gboolean enforce)
{
static int updates = 0;
time_t now = time(NULL);
if (data_updated) {
updates++;
}
if(refresh_timer == NULL) {
refresh_timer = mainloop_timer_add("refresh", 2000, FALSE, mon_trigger_refresh, NULL);
}
if (reconnect_timer > 0) {
/* we will receive a refresh request after successful reconnect */
mainloop_timer_stop(refresh_timer);
return;
}
/* as we're not handling initial failure of fencer-connection as
* fatal give it a retry here
* not getting here if cib-reconnection is already on the way
*/
setup_fencer_connection();
if (enforce ||
((now - last_refresh) > (options.reconnect_ms / 1000)) ||
updates >= 10) {
mainloop_set_trigger((crm_trigger_t *) refresh_trigger);
mainloop_timer_stop(refresh_timer);
updates = 0;
} else {
mainloop_timer_start(refresh_timer);
}
}
/* This function is called for fencing events (see setup_fencer_connection() for
* which ones) when --watch-fencing is NOT used on the command line
*/
static void
mon_st_callback_display(stonith_t * st, stonith_event_t * e)
{
if (st->state == stonith_disconnected) {
/* disconnect cib as well and have everything reconnect */
mon_cib_connection_destroy(NULL);
} else {
out->progress(out, false);
refresh_after_event(TRUE, FALSE);
}
}
/*
* De-init ncurses, disconnect from the CIB manager, disconnect fencing,
* deallocate memory and show usage-message if requested.
*
* We don't actually return, but nominally returning crm_exit_t allows a usage
* like "return clean_up(exit_code);" which helps static analysis understand the
* code flow.
*/
static crm_exit_t
clean_up(crm_exit_t exit_code)
{
/* Quitting crm_mon is much more complicated than it ought to be. */
/* (1) Close connections, free things, etc. */
cib__clean_up_connection(&cib);
stonith_api_delete(st);
free(options.neg_location_prefix);
free(options.only_node);
free(options.only_rsc);
free(options.pid_file);
g_slist_free_full(options.includes_excludes, free);
g_strfreev(processed_args);
/* (2) If this is abnormal termination and we're in curses mode, shut down
* curses first. Any messages displayed to the screen before curses is shut
* down will be lost because doing the shut down will also restore the
* screen to whatever it looked like before crm_mon was started.
*/
if ((error != NULL || exit_code == CRM_EX_USAGE) && output_format == mon_output_console) {
out->finish(out, exit_code, false, NULL);
pcmk__output_free(out);
out = NULL;
}
/* (3) If this is a command line usage related failure, print the usage
* message.
*/
if (exit_code == CRM_EX_USAGE && (output_format == mon_output_console || output_format == mon_output_plain)) {
char *help = g_option_context_get_help(context, TRUE, NULL);
fprintf(stderr, "%s", help);
g_free(help);
}
pcmk__free_arg_context(context);
/* (4) If this is any kind of error, print the error out and exit. Make
* sure to handle situations both before and after formatted output is
* set up. We want errors to appear formatted if at all possible.
*/
if (error != NULL) {
if (out != NULL) {
out->err(out, "%s: %s", g_get_prgname(), error->message);
out->finish(out, exit_code, true, NULL);
pcmk__output_free(out);
} else {
fprintf(stderr, "%s: %s\n", g_get_prgname(), error->message);
}
g_clear_error(&error);
crm_exit(exit_code);
}
/* (5) Print formatted output to the screen if we made it far enough in
* crm_mon to be able to do so.
*/
if (out != NULL) {
if (!options.daemonize) {
out->finish(out, exit_code, true, NULL);
}
pcmk__output_free(out);
pcmk__unregister_formats();
}
crm_exit(exit_code);
}