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crm_attribute.c
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/*
* 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 <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <libgen.h>
#include <time.h>
#include <sys/param.h>
#include <sys/types.h>
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <crm/common/ipc.h>
#include <crm/common/util.h>
#include <crm/cluster.h>
#include <crm/cib.h>
#include <crm/attrd.h>
#include <sys/utsname.h>
gboolean BE_QUIET = FALSE;
char command = 'G';
const char *dest_uname = NULL;
char *dest_node = NULL;
char *set_name = NULL;
char *attr_id = NULL;
char *attr_name = NULL;
char *attr_pattern = NULL;
const char *type = NULL;
const char *rsc_id = NULL;
const char *attr_value = NULL;
const char *attr_default = NULL;
const char *set_type = NULL;
/* *INDENT-OFF* */
static struct crm_option long_options[] = {
/* Top-level Options */
{"help", 0, 0, '?', "\tThis text"},
{"version", 0, 0, '$', "\tVersion information" },
{"verbose", 0, 0, 'V', "\tIncrease debug output"},
{"quiet", 0, 0, 'q', "\tPrint only the value on stdout\n"},
{"name", 1, 0, 'n', "Name of the attribute/option to operate on"},
{"pattern", 1, 0, 'P', "Pattern matching names of attributes (only with -v/-D and -l reboot)"},
{"-spacer-", 0, 0, '-', "\nCommands:"},
{"query", 0, 0, 'G', "\tQuery the current value of the attribute/option"},
{"update", 1, 0, 'v', "Update the value of the attribute/option"},
{"delete", 0, 0, 'D', "\tDelete the attribute/option"},
{"-spacer-", 0, 0, '-', "\nAdditional Options:"},
{"node", 1, 0, 'N', "Set an attribute for the named node (instead of a cluster option). See also: -l"},
{"type", 1, 0, 't', "Which part of the configuration to update/delete/query the option in"},
{"-spacer-", 0, 0, '-', "\t\t\tValid values: crm_config, rsc_defaults, op_defaults, tickets"},
{"lifetime", 1, 0, 'l', "Lifetime of the node attribute"},
{"-spacer-", 0, 0, '-', "\t\t\tValid values: reboot, forever"},
{"utilization", 0, 0, 'z', "Set an utilization attribute for the node."},
{"set-name", 1, 0, 's', "(Advanced) The attribute set in which to place the value"},
{"id", 1, 0, 'i', "\t(Advanced) The ID used to identify the attribute"},
{"default", 1, 0, 'd', "(Advanced) The default value to display if none is found in the configuration"},
{"inhibit-policy-engine", 0, 0, '!', NULL, 1},
/* legacy */
{"quiet", 0, 0, 'Q', NULL, 1},
{"node-uname", 1, 0, 'U', NULL, 1},
{"get-value", 0, 0, 'G', NULL, 1},
{"delete-attr", 0, 0, 'D', NULL, 1},
{"attr-value", 1, 0, 'v', NULL, 1},
{"attr-name", 1, 0, 'n', NULL, 1},
{"attr-id", 1, 0, 'i', NULL, 1},
{"-spacer-", 1, 0, '-', "\nExamples:", pcmk_option_paragraph},
{"-spacer-", 1, 0, '-', "Add a new node attribute called 'location' with the value of 'office' for host 'myhost':", pcmk_option_paragraph},
{"-spacer-", 1, 0, '-', " crm_attribute --node myhost --name location --update office", pcmk_option_example},
{"-spacer-", 1, 0, '-', "Query the value of the 'location' node attribute for host 'myhost':", pcmk_option_paragraph},
{"-spacer-", 1, 0, '-', " crm_attribute --node myhost --name location --query", pcmk_option_example},
{"-spacer-", 1, 0, '-', "Change the value of the 'location' node attribute for host 'myhost':", pcmk_option_paragraph},
{"-spacer-", 1, 0, '-', " crm_attribute --node myhost --name location --update backoffice", pcmk_option_example},
{"-spacer-", 1, 0, '-', "Delete the 'location' node attribute for host 'myhost':", pcmk_option_paragraph},
{"-spacer-", 1, 0, '-', " crm_attribute --node myhost --name location --delete", pcmk_option_example},
{"-spacer-", 1, 0, '-', "Query the value of the cluster-delay cluster option:", pcmk_option_paragraph},
{"-spacer-", 1, 0, '-', " crm_attribute --type crm_config --name cluster-delay --query", pcmk_option_example},
{"-spacer-", 1, 0, '-', "Query the value of the cluster-delay cluster option. Only print the value:", pcmk_option_paragraph},
{"-spacer-", 1, 0, '-', " crm_attribute --type crm_config --name cluster-delay --query --quiet", pcmk_option_example},
{0, 0, 0, 0}
};
/* *INDENT-ON* */
int
main(int argc, char **argv)
{
cib_t *the_cib = NULL;
int rc = pcmk_ok;
int cib_opts = cib_sync_call;
int argerr = 0;
int flag;
int option_index = 0;
int is_remote_node = 0;
crm_log_cli_init("crm_attribute");
crm_set_options(NULL, "<command> -n <attribute> [options]", long_options,
"Manage node's attributes and cluster options."
"\n\nAllows node attributes and cluster options to be queried, modified and deleted.\n");
if (argc < 2) {
crm_help('?', CRM_EX_USAGE);
}
while (1) {
flag = crm_get_option(argc, argv, &option_index);
if (flag == -1)
break;
switch (flag) {
case 'V':
crm_bump_log_level(argc, argv);
break;
case '$':
case '?':
crm_help(flag, CRM_EX_OK);
break;
case 'G':
command = flag;
attr_value = optarg;
break;
case 'D':
case 'v':
command = flag;
attr_value = optarg;
crm_log_args(argc, argv);
break;
case 'q':
case 'Q':
BE_QUIET = TRUE;
break;
case 'U':
case 'N':
dest_uname = strdup(optarg);
break;
case 's':
set_name = strdup(optarg);
break;
case 'l':
case 't':
type = optarg;
break;
case 'z':
type = XML_CIB_TAG_NODES;
set_type = XML_TAG_UTILIZATION;
break;
case 'n':
attr_name = strdup(optarg);
break;
case 'P':
attr_pattern = strdup(optarg);
break;
case 'i':
attr_id = strdup(optarg);
break;
case 'r':
rsc_id = optarg;
break;
case 'd':
attr_default = optarg;
break;
case '!':
crm_warn("Inhibiting notifications for this update");
cib_opts |= cib_inhibit_notify;
break;
default:
printf("Argument code 0%o (%c) is not (?yet?) supported\n", flag, flag);
++argerr;
break;
}
}
if (optind < argc) {
printf("non-option ARGV-elements: ");
while (optind < argc)
printf("%s ", argv[optind++]);
printf("\n");
}
if (optind > argc) {
++argerr;
}
if (argerr) {
crm_help('?', CRM_EX_USAGE);
}
the_cib = cib_new();
rc = the_cib->cmds->signon(the_cib, crm_system_name, cib_command);
if (rc != pcmk_ok) {
fprintf(stderr, "Error connecting to the CIB manager: %s\n",
pcmk_strerror(rc));
crm_exit(crm_errno2exit(rc));
}
if (type == NULL && dest_uname != NULL) {
type = "forever";
}
if (safe_str_eq(type, "reboot")) {
type = XML_CIB_TAG_STATUS;
} else if (safe_str_eq(type, "forever")) {
type = XML_CIB_TAG_NODES;
}
if (type == NULL && dest_uname == NULL) {
/* we're updating cluster options - don't populate dest_node */
type = XML_CIB_TAG_CRMCONFIG;
} else if (safe_str_eq(type, XML_CIB_TAG_CRMCONFIG)) {
} else if (safe_str_neq(type, XML_CIB_TAG_TICKETS)) {
/* If we are being called from a resource agent via the cluster,
* the correct local node name will be passed as an environment
* variable. Otherwise, we have to ask the cluster.
*/
dest_uname = attrd_get_target(dest_uname);
if (dest_uname == NULL) {
dest_uname = get_local_node_name();
}
rc = query_node_uuid(the_cib, dest_uname, &dest_node, &is_remote_node);
if (pcmk_ok != rc) {
fprintf(stderr, "Could not map name=%s to a UUID\n", dest_uname);
the_cib->cmds->signoff(the_cib);
cib_delete(the_cib);
crm_exit(crm_errno2exit(rc));
}
}
if ((command == 'D') && (attr_name == NULL) && (attr_pattern == NULL)) {
fprintf(stderr, "Error: must specify attribute name or pattern to delete\n");
crm_exit(CRM_EX_USAGE);
}
if (attr_pattern) {
if (((command != 'v') && (command != 'D'))
|| safe_str_neq(type, XML_CIB_TAG_STATUS)) {
fprintf(stderr, "Error: pattern can only be used with till-reboot update or delete\n");
crm_exit(CRM_EX_USAGE);
}
command = 'u';
free(attr_name);
attr_name = attr_pattern;
}
if (((command == 'v') || (command == 'D') || (command == 'u'))
&& safe_str_eq(type, XML_CIB_TAG_STATUS)
&& pcmk_ok == attrd_update_delegate(NULL, command, dest_uname, attr_name,
attr_value, type, set_name, NULL, NULL,
is_remote_node?attrd_opt_remote:attrd_opt_none)) {
crm_info("Update %s=%s sent via pacemaker-attrd",
attr_name, ((command == 'D')? "<none>" : attr_value));
} else if (command == 'D') {
rc = delete_attr_delegate(the_cib, cib_opts, type, dest_node, set_type, set_name,
attr_id, attr_name, attr_value, TRUE, NULL);
if (rc == -ENXIO) {
/* Nothing to delete...
* which means it's not there...
* which is what the admin wanted
*/
rc = pcmk_ok;
}
} else if (command == 'v') {
CRM_LOG_ASSERT(type != NULL);
CRM_LOG_ASSERT(attr_name != NULL);
CRM_LOG_ASSERT(attr_value != NULL);
rc = update_attr_delegate(the_cib, cib_opts, type, dest_node, set_type, set_name,
attr_id, attr_name, attr_value, TRUE, NULL, is_remote_node ? "remote" : NULL);
} else { /* query */
char *read_value = NULL;
rc = read_attr_delegate(the_cib, type, dest_node, set_type, set_name,
attr_id, attr_name, &read_value, TRUE, NULL);
if (rc == -ENXIO && attr_default) {
read_value = strdup(attr_default);
rc = pcmk_ok;
}
crm_info("Read %s=%s %s%s",
attr_name, crm_str(read_value), set_name ? "in " : "", set_name ? set_name : "");
if (rc == -ENOTUNIQ) {
// Multiple matches (already displayed) are not error for queries
rc = pcmk_ok;
} else if (BE_QUIET == FALSE) {
fprintf(stdout, "%s%s %s%s %s%s value=%s\n",
type ? "scope=" : "", type ? type : "",
attr_id ? "id=" : "", attr_id ? attr_id : "",
attr_name ? "name=" : "", attr_name ? attr_name : "",
read_value ? read_value : "(null)");
} else if (read_value != NULL) {
fprintf(stdout, "%s\n", read_value);
}
free(read_value);
}
if (rc == -ENOTUNIQ) {
printf("Please choose from one of the matches above and supply the 'id' with --attr-id\n");
} else if (rc != pcmk_ok) {
fprintf(stderr, "Error performing operation: %s\n", pcmk_strerror(rc));
}
the_cib->cmds->signoff(the_cib);
cib_delete(the_cib);
crm_exit(crm_errno2exit(rc));
}

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