1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
* Copyright 2013-2023 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 <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <crm/crm.h>
#include <crm/cib/internal.h>
#include <crm/msg_xml.h>
#include <crm/pengine/rules.h>
#include <crm/common/cmdline_internal.h>
#include <crm/common/iso8601.h>
#include <crm/common/ipc.h>
#include <crm/common/ipc_internal.h>
#include <crm/common/output_internal.h>
#include <crm/common/xml.h>
#include <crm/cluster/internal.h>
#include <crm/common/attrd_internal.h>
#include "pacemaker-attrd.h"
#define SUMMARY "daemon for managing Pacemaker node attributes"
gboolean stand_alone = FALSE;
gchar **log_files = NULL;
static GOptionEntry entries[] = {
{ "stand-alone", 's', G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &stand_alone,
"(Advanced use only) Run in stand-alone mode", NULL },
{ "logfile", 'l', G_OPTION_FLAG_NONE, G_OPTION_ARG_FILENAME_ARRAY,
&log_files, "Send logs to the additional named logfile", NULL },
{ NULL }
};
static pcmk__output_t *out = NULL;
static pcmk__supported_format_t formats[] = {
PCMK__SUPPORTED_FORMAT_NONE,
PCMK__SUPPORTED_FORMAT_TEXT,
PCMK__SUPPORTED_FORMAT_XML,
{ NULL, NULL, NULL }
};
lrmd_t *the_lrmd = NULL;
crm_cluster_t *attrd_cluster = NULL;
crm_trigger_t *attrd_config_read = NULL;
crm_exit_t attrd_exit_status = CRM_EX_OK;
static bool
ipc_already_running(void)
{
pcmk_ipc_api_t *old_instance = NULL;
int rc = pcmk_rc_ok;
rc = pcmk_new_ipc_api(&old_instance, pcmk_ipc_attrd);
if (rc != pcmk_rc_ok) {
return false;
}
rc = pcmk__connect_ipc(old_instance, pcmk_ipc_dispatch_sync, 2);
if (rc != pcmk_rc_ok) {
crm_debug("No existing %s manager instance found: %s",
pcmk_ipc_name(old_instance, true), pcmk_rc_str(rc));
pcmk_free_ipc_api(old_instance);
return false;
}
pcmk_disconnect_ipc(old_instance);
pcmk_free_ipc_api(old_instance);
return true;
}
static GOptionContext *
build_arg_context(pcmk__common_args_t *args, GOptionGroup **group) {
GOptionContext *context = NULL;
context = pcmk__build_arg_context(args, "text (default), xml", group, NULL);
pcmk__add_main_args(context, entries);
return context;
}
int
main(int argc, char **argv)
{
int rc = pcmk_rc_ok;
GError *error = NULL;
bool initialized = false;
GOptionGroup *output_group = NULL;
pcmk__common_args_t *args = pcmk__new_common_args(SUMMARY);
gchar **processed_args = pcmk__cmdline_preproc(argv, NULL);
GOptionContext *context = build_arg_context(args, &output_group);
attrd_init_mainloop();
crm_log_preinit(NULL, argc, argv);
mainloop_add_signal(SIGTERM, attrd_shutdown);
pcmk__register_formats(output_group, formats);
if (!g_option_context_parse_strv(context, &processed_args, &error)) {
attrd_exit_status = CRM_EX_USAGE;
goto done;
}
rc = pcmk__output_new(&out, args->output_ty, args->output_dest, argv);
if ((rc != pcmk_rc_ok) || (out == NULL)) {
attrd_exit_status = CRM_EX_ERROR;
g_set_error(&error, PCMK__EXITC_ERROR, attrd_exit_status,
"Error creating output format %s: %s",
args->output_ty, pcmk_rc_str(rc));
goto done;
}
if (args->version) {
out->version(out, false);
goto done;
}
// Open additional log files
pcmk__add_logfiles(log_files, out);
crm_log_init(T_ATTRD, LOG_INFO, TRUE, FALSE, argc, argv, FALSE);
crm_notice("Starting Pacemaker node attribute manager%s",
stand_alone ? " in standalone mode" : "");
if (ipc_already_running()) {
const char *msg = "pacemaker-attrd is already active, aborting startup";
attrd_exit_status = CRM_EX_OK;
g_set_error(&error, PCMK__EXITC_ERROR, attrd_exit_status, "%s", msg);
crm_err("%s", msg);
goto done;
}
initialized = true;
attributes = pcmk__strkey_table(NULL, attrd_free_attribute);
/* Connect to the CIB before connecting to the cluster or listening for IPC.
* This allows us to assume the CIB is connected whenever we process a
* cluster or IPC message (which also avoids start-up race conditions).
*/
if (!stand_alone) {
if (attrd_cib_connect(30) != pcmk_ok) {
attrd_exit_status = CRM_EX_FATAL;
g_set_error(&error, PCMK__EXITC_ERROR, attrd_exit_status,
"Could not connect to the CIB");
goto done;
}
crm_info("CIB connection active");
}
if (attrd_cluster_connect() != pcmk_ok) {
attrd_exit_status = CRM_EX_FATAL;
g_set_error(&error, PCMK__EXITC_ERROR, attrd_exit_status,
"Could not connect to the cluster");
goto done;
}
crm_info("Cluster connection active");
// Initialization that requires the cluster to be connected
attrd_election_init();
if (!stand_alone) {
attrd_cib_init();
}
/* Set a private attribute for ourselves with the protocol version we
* support. This lets all nodes determine the minimum supported version
* across all nodes. It also ensures that the writer learns our node name,
* so it can send our attributes to the CIB.
*/
attrd_broadcast_protocol();
attrd_init_ipc();
crm_notice("Pacemaker node attribute manager successfully started and accepting connections");
attrd_run_mainloop();
done:
if (initialized) {
crm_info("Shutting down attribute manager");
attrd_election_fini();
attrd_ipc_fini();
attrd_lrmd_disconnect();
if (!stand_alone) {
attrd_cib_disconnect();
}
attrd_free_waitlist();
pcmk_cluster_free(attrd_cluster);
g_hash_table_destroy(attributes);
}
g_strfreev(processed_args);
pcmk__free_arg_context(context);
g_strfreev(log_files);
pcmk__output_and_clear_error(&error, out);
if (out != NULL) {
out->finish(out, attrd_exit_status, true, NULL);
pcmk__output_free(out);
}
pcmk__unregister_formats();
crm_exit(attrd_exit_status);
}
|
