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/*
* Copyright (C) 2009 Andrew Beekhof <andrew@beekhof.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <crm_internal.h>
#include <sys/param.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/utsname.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/ipc.h>
#include <crm/cluster/internal.h>
#include <crm/common/mainloop.h>
#include <crm/stonith-ng.h>
#include <crm/cib.h>
#include <crm/pengine/status.h>
#include <crm/common/xml.h>
/* *INDENT-OFF* */
static struct crm_option long_options[] = {
{"help", 0, 0, '?', "\tThis text"},
{"version", 0, 0, '$', "\tVersion information" },
{"verbose", 0, 0, 'V', "\tIncrease debug output"},
{"quiet", 0, 0, 'q', "\tPrint only essential output"},
{"-spacer-", 0, 0, '-', "Commands:"},
{"list", 1, 0, 'l', "List devices that can terminate the specified host"},
{"list-registered", 0, 0, 'L', "List all registered devices"},
{"list-installed", 0, 0, 'I', "List all installed devices"},
{"list-targets", 1, 0, 's', "List the device's target"},
{"-spacer-", 0, 0, '-', ""},
{"metadata", 0, 0, 'M', "Check the device's metadata"},
{"query", 1, 0, 'Q', "Check the device's status"},
{"fence", 1, 0, 'F', "Fence the named host"},
{"unfence", 1, 0, 'U', "Unfence the named host"},
{"reboot", 1, 0, 'B', "Reboot the named host"},
{"confirm", 1, 0, 'C', "Confirm the named host is now safely down"},
{"history", 1, 0, 'H', "Retrieve last fencing operation for specified node (or '*' for all)"},
{"last", 1, 0, 'h', "Indicate when the named node was last fenced. Optional: --as-node-id"},
{"-spacer-", 0, 0, '-', ""},
{"register", 1, 0, 'R', "Register the named stonith device. Requires: --agent, optional: --option"},
{"deregister", 1, 0, 'D', "De-register the named stonith device"},
{"register-level", 1, 0, 'r',
"Register a stonith level for the named target, specified as one of:\n\t"
"NAME, @PATTERN, or ATTR=VALUE. Requires: --index, one or more --device entries"},
{"deregister-level", 1, 0, 'd', "De-register a stonith level for the named target\n\t"
"Target is specified as for --register-level. Requires: --index"},
{"-spacer-", 0, 0, '-', ""},
{"-spacer-", 0, 0, '-', "Options and modifiers:"},
{"agent", 1, 0, 'a', "The agent (eg. fence_xvm) to instantiate when calling with --register"},
{"env-option", 1, 0, 'e'},
{"option", 1, 0, 'o'},
{"tag", 1, 0, 'T', "Identify fencing operations with the specified tag.\n\t"
"Useful when there are multiple entities that might be invoking stonith_admin(8)"},
{"device", 1, 0, 'v', "A device to associate with a given host and stonith level"},
{"index", 1, 0, 'i', "The stonith level (1-9)"},
{"timeout", 1, 0, 't', "Operation timeout in seconds"},
{"as-node-id", 0, 0, 'n', "(Advanced) The supplied node is the corosync nodeid (Only for use with --last)" },
{"tolerance", 1, 0, 0, "(Advanced) Do nothing if an equivalent --fence request succeeded less than N seconds earlier" },
{"list-all", 0, 0, 'L', "legacy alias for --list-registered"},
{0, 0, 0, 0}
};
/* *INDENT-ON* */
int st_opts = st_opt_sync_call | st_opt_allow_suicide;
GMainLoop *mainloop = NULL;
struct {
stonith_t *st;
const char *target;
const char *action;
char *name;
int timeout;
int tolerance;
int rc;
} async_fence_data;
static int
try_mainloop_connect(void)
{
stonith_t *st = async_fence_data.st;
int tries = 10;
int i = 0;
int rc = 0;
for (i = 0; i < tries; i++) {
crm_debug("Connecting as %s", async_fence_data.name);
rc = st->cmds->connect(st, async_fence_data.name, NULL);
if (!rc) {
crm_debug("stonith client connection established");
return 0;
} else {
crm_debug("stonith client connection failed");
}
sleep(1);
}
crm_err("Could not connect to stonithd.");
return -1;
}
static void
notify_callback(stonith_t * st, stonith_event_t * e)
{
if (e->result != pcmk_ok) {
return;
}
if (safe_str_eq(async_fence_data.target, e->target) &&
safe_str_eq(async_fence_data.action, e->action)) {
async_fence_data.rc = e->result;
g_main_loop_quit(mainloop);
}
}
static void
fence_callback(stonith_t * stonith, stonith_callback_data_t * data)
{
async_fence_data.rc = data->rc;
g_main_loop_quit(mainloop);
}
static gboolean
async_fence_helper(gpointer user_data)
{
stonith_t *st = async_fence_data.st;
int call_id = 0;
if (try_mainloop_connect()) {
g_main_loop_quit(mainloop);
return TRUE;
}
st->cmds->register_notification(st, T_STONITH_NOTIFY_FENCE, notify_callback);
call_id = st->cmds->fence(st,
st_opt_allow_suicide,
async_fence_data.target,
async_fence_data.action,
async_fence_data.timeout, async_fence_data.tolerance);
if (call_id < 0) {
g_main_loop_quit(mainloop);
return TRUE;
}
st->cmds->register_callback(st,
call_id,
async_fence_data.timeout,
st_opt_timeout_updates, NULL, "callback", fence_callback);
return TRUE;
}
static int
mainloop_fencing(stonith_t * st, const char *target, const char *action, int timeout, int tolerance)
{
crm_trigger_t *trig;
async_fence_data.st = st;
async_fence_data.target = target;
async_fence_data.action = action;
async_fence_data.timeout = timeout;
async_fence_data.tolerance = tolerance;
async_fence_data.rc = -1;
trig = mainloop_add_trigger(G_PRIORITY_HIGH, async_fence_helper, NULL);
mainloop_set_trigger(trig);
mainloop = g_main_new(FALSE);
g_main_run(mainloop);
return async_fence_data.rc;
}
static int
handle_level(stonith_t *st, char *target, int fence_level,
stonith_key_value_t *devices, bool added)
{
char *node = NULL;
char *pattern = NULL;
char *name = NULL;
char *value = strchr(target, '=');
/* Determine if targeting by attribute, node name pattern or node name */
if (value != NULL) {
name = target;
*value++ = '\0';
} else if (*target == '@') {
pattern = target + 1;
} else {
node = target;
}
/* Register or unregister level as appropriate */
if (added) {
return st->cmds->register_level_full(st, st_opts, node, pattern,
name, value, fence_level,
devices);
}
return st->cmds->remove_level_full(st, st_opts, node, pattern,
name, value, fence_level);
}
static int
show_history(stonith_t *st, const char *target, int timeout, int quiet,
int verbose)
{
stonith_history_t *history, *hp, *latest = NULL;
int rc = 0;
rc = st->cmds->history(st, st_opts,
(safe_str_eq(target, "*")? NULL : target),
&history, timeout);
for (hp = history; hp; hp = hp->next) {
char *action_s = NULL;
time_t complete = hp->completed;
if (hp->state == st_done) {
latest = hp;
}
if (quiet || !verbose) {
continue;
} else if (hp->action == NULL) {
action_s = strdup("unknown");
} else if (hp->action[0] != 'r') {
action_s = crm_concat("turn", hp->action, ' ');
} else {
action_s = strdup(hp->action);
}
if (hp->state == st_failed) {
printf("%s failed to %s node %s on behalf of %s from %s at %s\n",
hp->delegate ? hp->delegate : "We", action_s, hp->target,
hp->client, hp->origin, ctime(&complete));
} else if (hp->state == st_done && hp->delegate) {
printf("%s was able to %s node %s on behalf of %s from %s at %s\n",
hp->delegate, action_s, hp->target,
hp->client, hp->origin, ctime(&complete));
} else if (hp->state == st_done) {
printf("We were able to %s node %s on behalf of %s from %s at %s\n",
action_s, hp->target, hp->client, hp->origin, ctime(&complete));
} else {
/* ocf:pacemaker:controld depends on "wishes to" being
* in this output, when used with older versions of DLM
* that don't report stateful_merge_wait
*/
printf("%s at %s wishes to %s node %s - %d %d\n",
hp->client, hp->origin, action_s, hp->target, hp->state, hp->completed);
}
free(action_s);
}
if (latest) {
if (quiet) {
printf("%d\n", latest->completed);
} else {
char *action_s = NULL;
time_t complete = latest->completed;
if (latest->action == NULL) {
action_s = strdup("unknown");
} else if (latest->action[0] != 'r') {
action_s = crm_concat("turn", latest->action, ' ');
} else {
action_s = strdup(latest->action);
}
printf("%s was able to %s node %s on behalf of %s from %s at %s\n",
latest->delegate ? latest->delegate : "We", action_s, latest->target,
latest->client, latest->origin, ctime(&complete));
free(action_s);
}
}
return rc;
}
int
main(int argc, char **argv)
{
int flag;
int rc = 0;
int quiet = 0;
int verbose = 0;
int argerr = 0;
int timeout = 120;
int option_index = 0;
int fence_level = 0;
int no_connect = 0;
int tolerance = 0;
int as_nodeid = FALSE;
char *name = NULL;
char *value = NULL;
char *target = NULL;
char *lists = NULL;
const char *agent = NULL;
const char *device = NULL;
const char *longname = NULL;
char action = 0;
stonith_t *st = NULL;
stonith_key_value_t *params = NULL;
stonith_key_value_t *devices = NULL;
stonith_key_value_t *dIter = NULL;
crm_log_cli_init("stonith_admin");
crm_set_options(NULL, "mode [options]", long_options,
"Provides access to the stonith-ng API.\n"
"\nAllows the administrator to add/remove/list devices, check device and host status and fence hosts\n");
async_fence_data.name = strdup(crm_system_name);
while (1) {
flag = crm_get_option_long(argc, argv, &option_index, &longname);
if (flag == -1)
break;
switch (flag) {
case 'V':
verbose = 1;
crm_bump_log_level(argc, argv);
break;
case '$':
case '?':
crm_help(flag, EX_OK);
break;
case 'I':
no_connect = 1;
/* fall through */
case 'L':
action = flag;
break;
case 'q':
quiet = 1;
break;
case 'Q':
case 'R':
case 'D':
case 's':
action = flag;
device = optarg;
break;
case 'T':
free(async_fence_data.name);
async_fence_data.name = crm_strdup_printf("%s.%s", crm_system_name, optarg);
break;
case 'a':
agent = optarg;
break;
case 'l':
target = optarg;
action = 'L';
break;
case 'M':
no_connect = 1;
action = flag;
break;
case 't':
timeout = crm_atoi(optarg, NULL);
break;
case 'B':
case 'F':
case 'U':
/* using mainloop here */
no_connect = 1;
/* fall through */
case 'C':
/* Always log the input arguments */
crm_log_args(argc, argv);
target = optarg;
action = flag;
break;
case 'n':
as_nodeid = TRUE;
break;
case 'h':
case 'H':
case 'r':
case 'd':
target = optarg;
action = flag;
break;
case 'i':
fence_level = crm_atoi(optarg, NULL);
break;
case 'v':
devices = stonith_key_value_add(devices, NULL, optarg);
break;
case 'o':
crm_info("Scanning: -o %s", optarg);
rc = sscanf(optarg, "%m[^=]=%m[^=]", &name, &value);
if (rc != 2) {
crm_err("Invalid option: -o %s", optarg);
++argerr;
} else {
crm_info("Got: '%s'='%s'", name, value);
params = stonith_key_value_add(params, name, value);
}
free(value); value = NULL;
free(name); name = NULL;
break;
case 'e':
{
char *key = crm_concat("OCF_RESKEY", optarg, '_');
const char *env = getenv(key);
if (env == NULL) {
crm_err("Invalid option: -e %s", optarg);
++argerr;
} else {
crm_info("Got: '%s'='%s'", optarg, env);
params = stonith_key_value_add(params, optarg, env);
}
}
break;
case 0:
if (safe_str_eq("tolerance", longname)) {
tolerance = crm_get_msec(optarg) / 1000; /* Send in seconds */
}
break;
default:
++argerr;
break;
}
}
if (optind > argc) {
++argerr;
}
if (argerr) {
crm_help('?', EX_USAGE);
}
crm_debug("Create");
st = stonith_api_new();
crm_debug("Created");
if (!no_connect) {
crm_debug("Connecting as %s", async_fence_data.name);
rc = st->cmds->connect(st, async_fence_data.name, NULL);
crm_debug("Connect: %d", rc);
if (rc < 0) {
goto done;
}
}
switch (action) {
case 'I':
rc = st->cmds->list_agents(st, st_opt_sync_call, NULL, &devices, timeout);
for (dIter = devices; dIter; dIter = dIter->next) {
fprintf(stdout, " %s\n", dIter->value);
}
if (rc == 0) {
fprintf(stderr, "No devices found\n");
} else if (rc > 0) {
fprintf(stderr, "%d devices found\n", rc);
rc = 0;
}
stonith_key_value_freeall(devices, 1, 1);
break;
case 'L':
rc = st->cmds->query(st, st_opts, target, &devices, timeout);
for (dIter = devices; dIter; dIter = dIter->next) {
fprintf(stdout, " %s\n", dIter->value);
}
if (rc == 0) {
fprintf(stderr, "No devices found\n");
} else if (rc > 0) {
fprintf(stderr, "%d devices found\n", rc);
rc = 0;
}
stonith_key_value_freeall(devices, 1, 1);
break;
case 'Q':
rc = st->cmds->monitor(st, st_opts, device, timeout);
if (rc < 0) {
rc = st->cmds->list(st, st_opts, device, NULL, timeout);
}
break;
case 's':
rc = st->cmds->list(st, st_opts, device, &lists, timeout);
if (rc == 0) {
if (lists) {
char *source = lists, *dest = lists;
while (*dest) {
if ((*dest == '\\') && (*(dest+1) == 'n')) {
*source = '\n';
dest++;
dest++;
source++;
} else if ((*dest == ',') || (*dest == ';')) {
dest++;
} else {
*source = *dest;
dest++;
source++;
}
if (!(*dest)) {
*source = 0;
}
}
fprintf(stdout, "%s", lists);
free(lists);
}
} else {
fprintf(stderr, "List command returned error. rc : %d\n", rc);
}
break;
case 'R':
rc = st->cmds->register_device(st, st_opts, device, "stonith-ng", agent, params);
break;
case 'D':
rc = st->cmds->remove_device(st, st_opts, device);
break;
case 'd':
case 'r':
rc = handle_level(st, target, fence_level, devices, action == 'r');
break;
case 'M':
if (agent == NULL) {
printf("Please specify an agent to query using -a,--agent [value]\n");
return -1;
} else {
char *buffer = NULL;
rc = st->cmds->metadata(st, st_opt_sync_call, agent, NULL, &buffer, timeout);
if (rc == pcmk_ok) {
printf("%s\n", buffer);
}
free(buffer);
}
break;
case 'C':
rc = st->cmds->confirm(st, st_opts, target);
break;
case 'B':
rc = mainloop_fencing(st, target, "reboot", timeout, tolerance);
break;
case 'F':
rc = mainloop_fencing(st, target, "off", timeout, tolerance);
break;
case 'U':
rc = mainloop_fencing(st, target, "on", timeout, tolerance);
break;
case 'h':
{
time_t when = 0;
if(as_nodeid) {
uint32_t nodeid = atol(target);
when = stonith_api_time(nodeid, NULL, FALSE);
} else {
when = stonith_api_time(0, target, FALSE);
}
if(when) {
printf("Node %s last kicked at: %s\n", target, ctime(&when));
} else {
printf("Node %s has never been kicked\n", target);
}
}
break;
case 'H':
rc = show_history(st, target, timeout, quiet, verbose);
break;
}
done:
free(async_fence_data.name);
crm_info("Command returned: %s (%d)", pcmk_strerror(rc), rc);
if (rc < 0) {
printf("Command failed: %s\n", pcmk_strerror(rc));
}
stonith_key_value_freeall(params, 1, 1);
st->cmds->disconnect(st);
crm_debug("Disconnect: %d", rc);
crm_debug("Destroy");
stonith_api_delete(st);
return rc;
}

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