/*
* Copyright 2004-2019 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 <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/curses_internal.h>
#include <crm/common/internal.h> /* crm_ends_with_ext */
#include <crm/common/ipc.h>
#include <crm/common/iso8601_internal.h>
#include <crm/common/mainloop.h>
#include <crm/common/output.h>
#include <crm/common/util.h>
#include <crm/common/xml.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 unsigned int show = mon_show_default;
/*
* Definitions indicating how to output
*/
static mon_output_format_t output_format = mon_output_unset;
/* other globals */
static GMainLoop *mainloop = NULL;
static guint timer_id = 0;
static mainloop_timer_t *refresh_timer = NULL;
static pe_working_set_t *mon_data_set = NULL;
static cib_t *cib = NULL;
static stonith_t *st = NULL;
static xmlNode *current_cib = NULL;
static pcmk__common_args_t *args = NULL;
static pcmk__output_t *out = NULL;
static GOptionContext *context = NULL;
/* FIXME allow, detect, and correctly interpret glob pattern or regex? */
const char *print_neg_location_prefix = "";
static time_t last_refresh = 0;
crm_trigger_t *refresh_trigger = NULL;
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,
CRM_MON_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 {
int reconnect_msec;
int fence_history_level;
gboolean daemonize;
gboolean show_bans;
char *pid_file;
char *external_agent;
char *external_recipient;
unsigned int mon_ops;
} options = {
.reconnect_msec = RECONNECT_MSECS,
.fence_history_level = 1,
.mon_ops = mon_op_default
};
static void clean_up_connections(void);
static crm_exit_t clean_up(crm_exit_t exit_code);
static void crm_diff_update(const char *event, xmlNode * msg);
static gboolean mon_refresh_display(gpointer user_data);
static int cib_connect(gboolean full);
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 kick_refresh(gboolean data_updated);
static gboolean
as_cgi_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
if (args->output_ty != NULL) {
free(args->output_ty);
}
args->output_ty = strdup("html");
output_format = mon_output_cgi;
options.mon_ops |= mon_op_one_shot;
return TRUE;
}
static gboolean
as_html_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
if (args->output_ty != NULL) {
free(args->output_ty);
}
if (args->output_dest != NULL) {
free(args->output_dest);
}
if (optarg != NULL) {
args->output_dest = strdup(optarg);
}
args->output_ty = strdup("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 **error) {
if (args->output_ty != NULL) {
free(args->output_ty);
}
args->output_ty = strdup("text");
output_format = mon_output_monitor;
options.mon_ops |= mon_op_one_shot;
return TRUE;
}
static gboolean
as_xml_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
if (args->output_ty != NULL) {
free(args->output_ty);
}
args->output_ty = strdup("xml");
output_format = mon_output_legacy_xml;
options.mon_ops |= mon_op_one_shot;
return TRUE;
}
static gboolean
fence_history_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
int rc = crm_atoi(optarg, "2");
if (rc == -1 || rc > 3) {
g_set_error(error, G_OPTION_ERROR, CRM_EX_INVALID_PARAM, "Fence history must be 0-3");
return FALSE;
} else {
options.fence_history_level = rc;
}
return TRUE;
}
static gboolean
group_by_node_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
options.mon_ops |= mon_op_group_by_node;
return TRUE;
}
static gboolean
hide_headers_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
show &= ~mon_show_headers;
return TRUE;
}
static gboolean
inactive_resources_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
options.mon_ops |= mon_op_inactive_resources;
return TRUE;
}
static gboolean
no_curses_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
output_format = mon_output_plain;
return TRUE;
}
static gboolean
one_shot_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
options.mon_ops |= mon_op_one_shot;
return TRUE;
}
static gboolean
print_brief_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
options.mon_ops |= mon_op_print_brief;
return TRUE;
}
static gboolean
print_clone_detail_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
options.mon_ops |= mon_op_print_clone_detail;
return TRUE;
}
static gboolean
print_pending_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
options.mon_ops |= mon_op_print_pending;
return TRUE;
}
static gboolean
print_timing_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
options.mon_ops |= mon_op_print_timing;
show |= mon_show_operations;
return TRUE;
}
static gboolean
reconnect_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
int rc = crm_get_msec(optarg);
if (rc == -1) {
g_set_error(error, G_OPTION_ERROR, CRM_EX_INVALID_PARAM, "Invalid value for -i: %s", optarg);
return FALSE;
} else {
options.reconnect_msec = crm_parse_interval_spec(optarg);
}
return TRUE;
}
static gboolean
show_attributes_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
show |= mon_show_attributes;
return TRUE;
}
static gboolean
show_bans_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
show |= mon_show_bans;
if (optarg != NULL) {
print_neg_location_prefix = optarg;
}
return TRUE;
}
static gboolean
show_failcounts_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
show |= mon_show_failcounts;
return TRUE;
}
static gboolean
show_operations_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
show |= mon_show_operations;
return TRUE;
}
static gboolean
show_tickets_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
show |= mon_show_tickets;
return TRUE;
}
static gboolean
use_cib_file_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
setenv("CIB_file", optarg, 1);
options.mon_ops |= mon_op_one_shot;
return TRUE;
}
static gboolean
watch_fencing_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **error) {
options.mon_ops |= mon_op_watch_fencing;
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', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, one_shot_cb,
"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" },
{ "xml-file", 'x', G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_CALLBACK, use_cib_file_cb,
NULL,
NULL },
{ NULL }
};
static GOptionEntry display_entries[] = {
{ "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 },
{ "watch-fencing", 'W', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, watch_fencing_cb,
"Listen for fencing events. For use with --external-agent",
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_clone_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_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, print_pending_cb,
"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* */
static gboolean
mon_timer_popped(gpointer data)
{
int rc = pcmk_ok;
#if CURSES_ENABLED
if (output_format == mon_output_console) {
clear();
refresh();
}
#endif
if (timer_id > 0) {
g_source_remove(timer_id);
timer_id = 0;
}
print_as(output_format, "Reconnecting...\n");
rc = cib_connect(TRUE);
if (rc != pcmk_ok) {
timer_id = g_timeout_add(options.reconnect_msec, mon_timer_popped, NULL);
}
return FALSE;
}
static void
mon_cib_connection_destroy(gpointer user_data)
{
print_as(output_format, "Connection to the cluster-daemons terminated\n");
if (refresh_timer != NULL) {
/* we'll trigger a refresh after reconnect */
mainloop_timer_stop(refresh_timer);
}
if (timer_id) {
/* we'll trigger a new reconnect-timeout at the end */
g_source_remove(timer_id);
timer_id = 0;
}
if (st) {
/* the client API won't properly reconnect notifications
* if they are still in the table - so remove them
*/
st->cmds->remove_notification(st, T_STONITH_NOTIFY_DISCONNECT);
st->cmds->remove_notification(st, T_STONITH_NOTIFY_FENCE);
st->cmds->remove_notification(st, T_STONITH_NOTIFY_HISTORY);
if (st->state != stonith_disconnected) {
st->cmds->disconnect(st);
}
}
if (cib) {
cib->cmds->signoff(cib);
timer_id = g_timeout_add(options.reconnect_msec, mon_timer_popped, NULL);
}
return;
}
/*
* Mainloop signal handler.
*/
static void
mon_shutdown(int nsig)
{
clean_up(CRM_EX_OK);
}
#if CURSES_ENABLED
static sighandler_t ncurses_winch_handler;
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);
mainloop_set_trigger(refresh_trigger);
}
not_done--;
}
#endif
static int
cib_connect(gboolean full)
{
int rc = pcmk_ok;
static gboolean need_pass = TRUE;
CRM_CHECK(cib != NULL, return -EINVAL);
if (getenv("CIB_passwd") != NULL) {
need_pass = FALSE;
}
if (is_set(options.mon_ops, mon_op_fence_connect) && st == NULL) {
st = stonith_api_new();
}
if (is_set(options.mon_ops, mon_op_fence_connect) && st != NULL && st->state == stonith_disconnected) {
rc = st->cmds->connect(st, crm_system_name, NULL);
if (rc == pcmk_ok) {
crm_trace("Setting up stonith callbacks");
if (is_set(options.mon_ops, mon_op_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);
}
}
}
if (cib->state != cib_connected_query && cib->state != cib_connected_command) {
crm_trace("Connecting to the CIB");
if ((output_format == mon_output_console) && need_pass && (cib->variant == cib_remote)) {
need_pass = FALSE;
print_as(output_format, "Password:");
}
rc = cib->cmds->signon(cib, crm_system_name, cib_query);
if (rc != pcmk_ok) {
return rc;
}
rc = cib->cmds->query(cib, NULL, ¤t_cib, cib_scope_local | cib_sync_call);
if (rc == pcmk_ok) {
mon_refresh_display(&output_format);
}
if (rc == pcmk_ok && full) {
if (rc == pcmk_ok) {
rc = cib->cmds->set_connection_dnotify(cib, mon_cib_connection_destroy);
if (rc == -EPROTONOSUPPORT) {
print_as
(output_format, "Notification setup not supported, won't be able to reconnect after failure");
if (output_format == mon_output_console) {
sleep(2);
}
rc = pcmk_ok;
}
}
if (rc == pcmk_ok) {
cib->cmds->del_notify_callback(cib, T_CIB_DIFF_NOTIFY, crm_diff_update);
rc = cib->cmds->add_notify_callback(cib, T_CIB_DIFF_NOTIFY, crm_diff_update);
}
if (rc != pcmk_ok) {
print_as(output_format, "Notification setup failed, could not monitor CIB actions");
if (output_format == mon_output_console) {
sleep(2);
}
clean_up_connections();
}
}
}
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(output_format, option, condition) \
out->info(out, "%c %c: \t%s", ((condition)? '*': ' '), option, get_option_desc(option));
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':
if (!options.fence_history_level) {
options.mon_ops |= mon_op_fence_history;
options.mon_ops |= mon_op_fence_connect;
if (st == NULL) {
mon_cib_connection_destroy(NULL);
}
}
show ^= mon_show_fence_history;
break;
case 'c':
show ^= mon_show_tickets;
break;
case 'f':
show ^= mon_show_failcounts;
break;
case 'n':
options.mon_ops ^= mon_op_group_by_node;
break;
case 'o':
show ^= mon_show_operations;
if ((show & mon_show_operations) == 0) {
options.mon_ops &= ~mon_op_print_timing;
}
break;
case 'r':
options.mon_ops ^= mon_op_inactive_resources;
break;
case 'R':
options.mon_ops ^= mon_op_print_clone_detail;
break;
case 't':
options.mon_ops ^= mon_op_print_timing;
if (is_set(options.mon_ops, mon_op_print_timing)) {
show |= mon_show_operations;
}
break;
case 'A':
show ^= mon_show_attributes;
break;
case 'L':
show ^= mon_show_bans;
break;
case 'D':
/* If any header is shown, clear them all, otherwise set them all */
if (show & mon_show_headers) {
show &= ~mon_show_headers;
} else {
show |= mon_show_headers;
}
break;
case 'b':
options.mon_ops ^= mon_op_print_brief;
break;
case 'j':
options.mon_ops ^= mon_op_print_pending;
break;
case '?':
config_mode = TRUE;
break;
default:
goto refresh;
}
if (!config_mode)
goto refresh;
blank_screen();
out->info(out, "%s", "Display option change mode\n");
print_option_help(out, 'c', show & mon_show_tickets);
print_option_help(out, 'f', show & mon_show_failcounts);
print_option_help(out, 'n', is_set(options.mon_ops, mon_op_group_by_node));
print_option_help(out, 'o', show & mon_show_operations);
print_option_help(out, 'r', is_set(options.mon_ops, mon_op_inactive_resources));
print_option_help(out, 't', is_set(options.mon_ops, mon_op_print_timing));
print_option_help(out, 'A', show & mon_show_attributes);
print_option_help(out, 'L', show & mon_show_bans);
print_option_help(out, 'D', (show & mon_show_headers) == 0);
print_option_help(out, 'R', is_set(options.mon_ops, mon_op_print_clone_detail));
print_option_help(out, 'b', is_set(options.mon_ops, mon_op_print_brief));
print_option_help(out, 'j', is_set(options.mon_ops, mon_op_print_pending));
print_option_help(out, 'm', (show & mon_show_fence_history));
out->info(out, "%s", "\nToggle fields via field letter, type any other key to return");
}
refresh:
mon_refresh_display(NULL);
return TRUE;
}
#endif
// Basically crm_signal_handler(SIGCHLD, SIG_IGN) plus the SA_NOCLDWAIT flag
static void
avoid_zombies()
{
struct sigaction sa;
memset(&sa, 0, sizeof(struct sigaction));
if (sigemptyset(&sa.sa_mask) < 0) {
crm_warn("Cannot avoid zombies: %s", pcmk_strerror(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_strerror(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"
"*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"
"*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";
context = pcmk__build_arg_context(args, "console (default), html, text, xml", group);
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() {
GError *error = NULL;
if (output_format == mon_output_plain) {
if (!pcmk__force_args(context, &error, "%s --text-fancy", g_get_prgname())) {
fprintf(stderr, "%s: %s\n", g_get_prgname(), error->message);
clean_up(CRM_EX_USAGE);
}
} else if (output_format == mon_output_html) {
if (!pcmk__force_args(context, &error, "%s --html-title \"Cluster Status\"",
g_get_prgname())) {
fprintf(stderr, "%s: %s\n", g_get_prgname(), error->message);
clean_up(CRM_EX_USAGE);
}
} else if (output_format == mon_output_cgi) {
if (!pcmk__force_args(context, &error, "%s --html-cgi --html-title \"Cluster Status\"", g_get_prgname())) {
fprintf(stderr, "%s: %s\n", g_get_prgname(), error->message);
clean_up(CRM_EX_USAGE);
}
} else if (output_format == mon_output_xml) {
if (!pcmk__force_args(context, &error, "%s --xml-simple-list", g_get_prgname())) {
fprintf(stderr, "%s: %s\n", g_get_prgname(), error->message);
clean_up(CRM_EX_USAGE);
}
} else if (output_format == mon_output_legacy_xml) {
output_format = mon_output_xml;
if (!pcmk__force_args(context, &error, "%s --xml-legacy", g_get_prgname())) {
fprintf(stderr, "%s: %s\n", g_get_prgname(), error->message);
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 *error = NULL;
if (output_format != mon_output_unset) {
return;
}
if (safe_str_eq(args->output_ty, "html")) {
char *dest = NULL;
if (args->output_dest != NULL) {
dest = strdup(args->output_dest);
}
retval = as_html_cb("h", dest, NULL, &error);
free(dest);
} else if (safe_str_eq(args->output_ty, "text")) {
retval = no_curses_cb("N", NULL, NULL, &error);
} else if (safe_str_eq(args->output_ty, "xml")) {
if (args->output_ty != NULL) {
free(args->output_ty);
}
args->output_ty = strdup("xml");
output_format = mon_output_xml;
options.mon_ops |= mon_op_one_shot;
} else if (is_set(options.mon_ops, mon_op_one_shot)) {
if (args->output_ty != NULL) {
free(args->output_ty);
}
args->output_ty = strdup("text");
output_format = mon_output_plain;
} else {
/* Neither old nor new arguments were given, so set the default. */
if (args->output_ty != NULL) {
free(args->output_ty);
}
args->output_ty = strdup("console");
output_format = mon_output_console;
}
if (!retval) {
fprintf(stderr, "%s: %s\n", g_get_prgname(), error->message);
clean_up(CRM_EX_USAGE);
}
}
int
main(int argc, char **argv)
{
int rc = pcmk_ok;
char **processed_args = NULL;
GOptionGroup *output_group = NULL;
GError *error = 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");
crm_log_cli_init("crm_mon");
// Avoid needing to wait for subprocesses forked for -E/--external-agent
avoid_zombies();
if (crm_ends_with_ext(argv[0], ".cgi") == TRUE) {
output_format = mon_output_cgi;
options.mon_ops |= mon_op_one_shot;
}
processed_args = pcmk__cmdline_preproc(argc, argv, "ehimpxEL");
if (!g_option_context_parse_strv(context, &processed_args, &error)) {
fprintf(stderr, "%s: %s\n", g_get_prgname(), error->message);
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) {
show &= ~mon_show_times;
}
if (is_set(options.mon_ops, mon_op_watch_fencing)) {
options.mon_ops |= mon_op_fence_connect;
/* don't moan as fence_history_level == 1 is default */
options.fence_history_level = 0;
}
/* create the cib-object early to be able to do further
* decisions based on the cib-source
*/
cib = cib_new();
if (cib == NULL) {
rc = -EINVAL;
} else {
switch (cib->variant) {
case cib_native:
/* cib & fencing - everything available */
break;
case cib_file:
/* Don't try to connect to fencing as we
* either don't have a running cluster or
* the fencing-information would possibly
* not match the cib data from a file.
* As we don't expect cib-updates coming
* in enforce one-shot. */
options.fence_history_level = 0;
options.mon_ops |= mon_op_one_shot;
break;
case cib_remote:
/* updates coming in but no fencing */
options.fence_history_level = 0;
break;
case cib_undefined:
case cib_database:
default:
/* something is odd */
rc = -EINVAL;
break;
}
}
switch (options.fence_history_level) {
case 3:
options.mon_ops |= mon_op_fence_full_history;
/* fall through to next lower level */
case 2:
show |= mon_show_fence_history;
/* fall through to next lower level */
case 1:
options.mon_ops |= mon_op_fence_history;
options.mon_ops |= mon_op_fence_connect;
break;
default:
break;
}
if (is_set(options.mon_ops, mon_op_one_shot)) {
if (output_format == mon_output_console) {
output_format = mon_output_plain;
}
} else if (options.daemonize) {
if ((output_format == mon_output_console) || (output_format == mon_output_plain)) {
output_format = mon_output_none;
}
crm_enable_stderr(FALSE);
if ((args->output_dest == NULL || safe_str_eq(args->output_dest, "-")) && !options.external_agent) {
printf("--daemonize requires at least one of --output-to and --external-agent\n");
return clean_up(CRM_EX_USAGE);
}
if (cib) {
/* to be on the safe side don't have cib-object around
* when we are forking
*/
cib_delete(cib);
cib = NULL;
crm_make_daemon(crm_system_name, TRUE, options.pid_file);
cib = cib_new();
if (cib == NULL) {
rc = -EINVAL;
}
/* otherwise assume we've got the same cib-object we've just destroyed
* in our parent
*/
}
} else if (output_format == mon_output_console) {
#if CURSES_ENABLED
crm_enable_stderr(FALSE);
#else
options.mon_ops |= mon_op_one_shot;
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
}
}
if (rc != pcmk_ok) {
// Shouldn't really be possible
fprintf(stderr, "Invalid CIB source\n");
return clean_up(CRM_EX_ERROR);
}
reconcile_output_format(args);
add_output_args();
/* Create the output format - 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 != 0) {
fprintf(stderr, "Error creating output format %s: %s\n", args->output_ty, pcmk_strerror(rc));
return clean_up(CRM_EX_ERROR);
}
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 && cib->variant == cib_file) {
fprintf(stderr, "CGI mode used with CIB file\n");
return clean_up(CRM_EX_USAGE);
} else if (options.external_agent != NULL) {
fprintf(stderr, "CGI mode cannot be used with --external-agent\n");
return clean_up(CRM_EX_USAGE);
} else if (options.daemonize == TRUE) {
fprintf(stderr, "CGI mode cannot be used with -d\n");
return clean_up(CRM_EX_USAGE);
}
}
/* XML output always prints everything */
if (output_format == mon_output_xml || output_format == mon_output_legacy_xml) {
show = mon_show_all;
options.mon_ops |= mon_op_print_timing;
}
crm_info("Starting %s", crm_system_name);
if (cib) {
do {
if (is_not_set(options.mon_ops, mon_op_one_shot)) {
print_as(output_format ,"Waiting until cluster is available on this node ...\n");
}
rc = cib_connect(is_not_set(options.mon_ops, mon_op_one_shot));
if (is_set(options.mon_ops, mon_op_one_shot)) {
break;
} else if (rc != pcmk_ok) {
sleep(options.reconnect_msec / 1000);
#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);
}
if (rc != pcmk_ok) {
if (output_format == mon_output_monitor) {
printf("CLUSTER CRIT: Connection to cluster failed: %s\n",
pcmk_strerror(rc));
return clean_up(MON_STATUS_CRIT);
} else {
if (rc == -ENOTCONN) {
out->err(out, "%s", "\nError: cluster is not available on this node");
} else {
out->err(out, "\nConnection to cluster failed: %s", pcmk_strerror(rc));
}
}
if (output_format == mon_output_console) {
sleep(2);
}
return clean_up(crm_errno2exit(rc));
}
if (is_set(options.mon_ops, mon_op_one_shot)) {
return clean_up(CRM_EX_OK);
}
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;
g_io_add_watch(g_io_channel_unix_new(STDIN_FILENO), G_IO_IN, detect_user_input, NULL);
}
#endif
refresh_trigger = mainloop_add_trigger(G_PRIORITY_LOW, mon_refresh_display, NULL);
g_main_loop_run(mainloop);
g_main_loop_unref(mainloop);
crm_info("Exiting %s", crm_system_name);
return clean_up(CRM_EX_OK);
}
/*!
* \internal
* \brief Print one-line status suitable for use with monitoring software
*
* \param[in] data_set Working set of CIB state
* \param[in] history List of stonith actions
*
* \note This function's output (and the return code when the program exits)
* should conform to https://www.monitoring-plugins.org/doc/guidelines.html
*/
static void
print_simple_status(pcmk__output_t *out, pe_working_set_t * data_set,
stonith_history_t *history, unsigned int mon_ops)
{
GListPtr gIter = NULL;
int nodes_online = 0;
int nodes_standby = 0;
int nodes_maintenance = 0;
char *offline_nodes = NULL;
gboolean no_dc = FALSE;
gboolean offline = FALSE;
if (data_set->dc_node == NULL) {
mon_ops |= mon_op_has_warnings;
no_dc = TRUE;
}
for (gIter = data_set->nodes; gIter != NULL; gIter = gIter->next) {
node_t *node = (node_t *) gIter->data;
if (node->details->standby && node->details->online) {
nodes_standby++;
} else if (node->details->maintenance && node->details->online) {
nodes_maintenance++;
} else if (node->details->online) {
nodes_online++;
} else {
char *s = crm_strdup_printf("offline node: %s", node->details->uname);
offline_nodes = add_list_element(offline_nodes, s);
free(s);
mon_ops |= mon_op_has_warnings;
offline = TRUE;
}
}
if (is_set(mon_ops, mon_op_has_warnings)) {
out->info(out, "CLUSTER WARN:%s%s%s",
no_dc ? " No DC" : "",
no_dc && offline ? "," : "",
offline ? offline_nodes : "");
free(offline_nodes);
} else {
char *nodes_standby_s = NULL;
char *nodes_maint_s = NULL;
if (nodes_standby > 0) {
nodes_standby_s = crm_strdup_printf(", %d standby node%s", nodes_standby,
s_if_plural(nodes_standby));
}
if (nodes_maintenance > 0) {
nodes_maint_s = crm_strdup_printf(", %d maintenance node%s",
nodes_maintenance,
s_if_plural(nodes_maintenance));
}
out->info(out, "CLUSTER OK: %d node%s online%s%s, "
"%d resource instance%s configured",
nodes_online, s_if_plural(nodes_online),
nodes_standby_s != NULL ? nodes_standby_s : "",
nodes_maint_s != NULL ? nodes_maint_s : "",
data_set->ninstances, s_if_plural(data_set->ninstances));
free(nodes_standby_s);
free(nodes_maint_s);
}
}
/*!
* \internal
* \brief Reduce the stonith-history
* for successful actions we keep the last of every action-type & target
* for failed actions we record as well who had failed
* for actions in progress we keep full track
*
* \param[in] history List of stonith actions
*
*/
static stonith_history_t *
reduce_stonith_history(stonith_history_t *history)
{
stonith_history_t *new = history, *hp, *np;
if (new) {
hp = new->next;
new->next = NULL;
while (hp) {
stonith_history_t *hp_next = hp->next;
hp->next = NULL;
for (np = new; ; np = np->next) {
if ((hp->state == st_done) || (hp->state == st_failed)) {
/* action not in progress */
if (safe_str_eq(hp->target, np->target) &&
safe_str_eq(hp->action, np->action) &&
(hp->state == np->state) &&
((hp->state == st_done) ||
safe_str_eq(hp->delegate, np->delegate))) {
/* purge older hp */
stonith_history_free(hp);
break;
}
}
if (!np->next) {
np->next = hp;
break;
}
}
hp = hp_next;
}
}
return new;
}
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 = crm_itoa(rc);
char *status_s = crm_itoa(status);
char *target_rc_s = crm_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 void
handle_rsc_op(xmlNode * xml, const char *node_id)
{
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) {
xmlNode *cIter;
for(cIter = xml->children; cIter; cIter = cIter->next) {
handle_rsc_op(cIter, node_id);
}
return;
}
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;
}
if (!decode_transition_magic(magic, NULL, NULL, NULL, &status, &rc,
&target_rc)) {
crm_err("Invalid event %s detected for %s", magic, id);
return;
}
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 && safe_str_neq(XML_CIB_TAG_STATE, TYPE(n))) {
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_strerror(pcmk_ok);
if (status == PCMK_LRM_OP_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_LRM_OP_DONE) {
desc = services_ocf_exitcode_str(rc);
crm_warn("%s of %s on %s failed: %s", task, rsc, node, desc);
} else {
desc = services_lrm_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);
}
static gboolean
mon_trigger_refresh(gpointer user_data)
{
mainloop_set_trigger(refresh_trigger);
return FALSE;
}
#define NODE_PATT "/lrm[@id="
static char *
get_node_from_xpath(const char *xpath)
{
char *nodeid = NULL;
char *tmp = strstr(xpath, NODE_PATT);
if(tmp) {
tmp += strlen(NODE_PATT);
tmp += 1;
nodeid = strdup(tmp);
tmp = strstr(nodeid, "\'");
CRM_ASSERT(tmp);
tmp[0] = 0;
}
return nodeid;
}
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 = __xml_first_child(diff); change != NULL; change = __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) {
xmlNode *state = NULL;
xmlNode *status = first_named_child(match, XML_CIB_TAG_STATUS);
for (state = __xml_first_child_element(status); state != NULL;
state = __xml_next_element(state)) {
node = crm_element_value(state, XML_ATTR_UNAME);
if (node == NULL) {
node = ID(state);
}
handle_rsc_op(state, node);
}
} else if(strcmp(name, XML_CIB_TAG_STATUS) == 0) {
xmlNode *state = NULL;
for (state = __xml_first_child_element(match); state != NULL;
state = __xml_next_element(state)) {
node = crm_element_value(state, XML_ATTR_UNAME);
if (node == NULL) {
node = ID(state);
}
handle_rsc_op(state, node);
}
} 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, node);
} else if(strcmp(name, XML_CIB_TAG_LRM) == 0) {
node = ID(match);
handle_rsc_op(match, node);
} else if(strcmp(name, XML_LRM_TAG_RESOURCES) == 0) {
char *local_node = get_node_from_xpath(xpath);
handle_rsc_op(match, local_node);
free(local_node);
} else if(strcmp(name, XML_LRM_TAG_RESOURCE) == 0) {
char *local_node = get_node_from_xpath(xpath);
handle_rsc_op(match, local_node);
free(local_node);
} else if(strcmp(name, XML_LRM_TAG_RSC_OP) == 0) {
char *local_node = get_node_from_xpath(xpath);
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);
print_dot(output_format);
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) {
print_as(output_format, "--- Stale data ---");
}
stale = TRUE;
return;
}
stale = FALSE;
kick_refresh(cib_updated);
}
static gboolean
mon_refresh_display(gpointer user_data)
{
xmlNode *cib_copy = copy_xml(current_cib);
stonith_history_t *stonith_history = NULL;
last_refresh = time(NULL);
if (cli_config_update(&cib_copy, NULL, FALSE) == FALSE) {
if (cib) {
cib->cmds->signoff(cib);
}
print_as(output_format, "Upgrade failed: %s", pcmk_strerror(-pcmk_err_schema_validation));
if (output_format == mon_output_console) {
sleep(2);
}
clean_up(CRM_EX_CONFIG);
return FALSE;
}
/* get the stonith-history if there is evidence we need it
*/
while (is_set(options.mon_ops, mon_op_fence_history)) {
if (st != NULL) {
if (st->cmds->history(st, st_opt_sync_call, NULL, &stonith_history, 120)) {
fprintf(stderr, "Critical: Unable to get stonith-history\n");
mon_cib_connection_destroy(NULL);
} else {
stonith_history = stonith__sort_history(stonith_history);
if (is_not_set(options.mon_ops, mon_op_fence_full_history) && output_format != mon_output_xml) {
stonith_history = reduce_stonith_history(stonith_history);
}
break; /* all other cases are errors */
}
} else {
fprintf(stderr, "Critical: No stonith-API\n");
}
free_xml(cib_copy);
print_as(output_format, "Reading stonith-history failed");
if (output_format == mon_output_console) {
sleep(2);
}
return FALSE;
}
if (mon_data_set == NULL) {
mon_data_set = pe_new_working_set();
CRM_ASSERT(mon_data_set != NULL);
}
mon_data_set->input = cib_copy;
cluster_status(mon_data_set);
/* Unpack constraints if any section will need them
* (tickets may be referenced in constraints but not granted yet,
* and bans need negative location constraints) */
if (show & (mon_show_bans | mon_show_tickets)) {
xmlNode *cib_constraints = get_object_root(XML_CIB_TAG_CONSTRAINTS,
mon_data_set->input);
unpack_constraints(cib_constraints, mon_data_set);
}
switch (output_format) {
case mon_output_html:
case mon_output_cgi:
if (print_html_status(out, output_format, mon_data_set, stonith_history,
options.mon_ops, show, print_neg_location_prefix) != 0) {
fprintf(stderr, "Critical: Unable to output html file\n");
clean_up(CRM_EX_CANTCREAT);
return FALSE;
}
break;
case mon_output_legacy_xml:
case mon_output_xml:
print_xml_status(out, mon_data_set, stonith_history, options.mon_ops,
show, print_neg_location_prefix);
break;
case mon_output_monitor:
print_simple_status(out, mon_data_set, stonith_history, options.mon_ops);
if (is_set(options.mon_ops, mon_op_has_warnings)) {
clean_up(MON_STATUS_WARN);
return FALSE;
}
break;
case mon_output_console:
/* If curses is not enabled, this will just fall through to the plain
* text case.
*/
#if CURSES_ENABLED
blank_screen();
print_status(out, output_format, mon_data_set, stonith_history, options.mon_ops,
show, print_neg_location_prefix);
refresh();
break;
#endif
case mon_output_plain:
print_status(out, output_format, mon_data_set, stonith_history, options.mon_ops,
show, print_neg_location_prefix);
break;
case mon_output_unset:
case mon_output_none:
break;
}
stonith_history_free(stonith_history);
stonith_history = NULL;
pe_reset_working_set(mon_data_set);
return TRUE;
}
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 = crm_strdup_printf("Operation %s requested by %s for peer %s: %s (ref=%s)",
e->operation, e->origin, e->target, pcmk_strerror(e->result),
e->id);
send_custom_trap(e->target, NULL, e->operation, pcmk_ok, e->result, 0, desc);
free(desc);
}
}
static void
kick_refresh(gboolean data_updated)
{
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);
}
/* Refresh
* - immediately if the last update was more than 5s ago
* - every 10 cib-updates
* - at most 2s after the last update
*/
if ((now - last_refresh) > (options.reconnect_msec / 1000)) {
mainloop_set_trigger(refresh_trigger);
mainloop_timer_stop(refresh_timer);
updates = 0;
} else if(updates >= 10) {
mainloop_set_trigger(refresh_trigger);
mainloop_timer_stop(refresh_timer);
updates = 0;
} else {
mainloop_timer_start(refresh_timer);
}
}
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 {
print_dot(output_format);
kick_refresh(TRUE);
}
}
static void
clean_up_connections(void)
{
if (cib != NULL) {
cib->cmds->signoff(cib);
cib_delete(cib);
cib = NULL;
}
if (st != NULL) {
if (st->state != stonith_disconnected) {
st->cmds->remove_notification(st, T_STONITH_NOTIFY_DISCONNECT);
st->cmds->remove_notification(st, T_STONITH_NOTIFY_FENCE);
st->cmds->remove_notification(st, T_STONITH_NOTIFY_HISTORY);
st->cmds->disconnect(st);
}
stonith_api_delete(st);
st = NULL;
}
}
static void
handle_html_output(crm_exit_t exit_code) {
xmlNodePtr html = NULL;
out->finish(out, exit_code, false, (void **) &html);
pcmk__html_add_header(html, "meta", "http-equiv", "refresh", "content",
crm_itoa(options.reconnect_msec/1000), NULL);
htmlDocDump(out->dest, html->doc);
}
/*
* 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)
{
#if CURSES_ENABLED
if (output_format == mon_output_console) {
output_format = mon_output_plain;
echo();
nocbreak();
endwin();
}
#endif
clean_up_connections();
free(options.pid_file);
pe_free_working_set(mon_data_set);
mon_data_set = NULL;
if (exit_code == CRM_EX_USAGE) {
if (output_format == mon_output_cgi) {
fprintf(stdout, "Content-Type: text/plain\n"
"Status: 500\n\n");
} else {
fprintf(stderr, "%s", g_option_context_get_help(context, TRUE, NULL));
}
}
pcmk__free_arg_context(context);
if (out != NULL) {
if (output_format == mon_output_cgi || output_format == mon_output_html) {
handle_html_output(exit_code);
} else {
out->finish(out, exit_code, true, NULL);
}
pcmk__output_free(out);
}
crm_exit(exit_code);
}