/*
* Check if disk archiving is configured by looking for diskvols.conf
* file. If it is configured then HA-SAM will not support it.
*
* Return: success = B_TRUE [or] failure = B_FALSE
*/
boolean_t
check_disk_archive_conf(void)
{
struct stat buf;
boolean_t found;
struct disk_archive_info *dskarch_info;
int j;
if (stat(diskvolsconf, &buf) < 0) {
scds_syslog(LOG_DEBUG, "Disk archiving not configured");
dprintf(stderr, "Disk archiving not configured !\n");
/*
* Since disk archiving is not configured, just return
* success as no need to do further processing
*/
return (B_TRUE);
}
/*
* Since diskvols.conf file exists,
* gather disk resource information
*/
dskarch_info = collect_diskarchive_info();
if ((dskarch_info == NULL) ||
(num_disk_archives <= 0)) {
dprintf(stderr,
"Error collecting disk archive info\n");
free(dskarch_info);
return (B_FALSE);
}
for (j = 0; j < num_disk_archives; j++) {
/*
* Verify if disk archive directory are valid
* for locally available resources with no host.
*/
if (streq(dskarch_info->dskarch_host[j], "")) {
if (search_dir(dskarch_info->dskarch_path[j]) == NULL) {
scds_syslog(LOG_ERR,
"Invalid disk archive directory %s !",
dskarch_info->dskarch_path[j]);
dprintf(stderr,
"Invalid disk archive directory %s !\n",
dskarch_info->dskarch_path[j]);
free(dskarch_info);
return (B_FALSE);
}
} else {
/*
* Disk archive resource is on a remote server.
* Verify if remote host can be ping'd on which
* NFS disk archive resources are configured.
* In this case host has a valid entry.
*/
if (!ping_host(dskarch_info->dskarch_host[j])) {
dprintf(stderr,
"Unable to ping host = %s\n",
dskarch_info->dskarch_host[j]);
return (B_FALSE);
}
}
}
free(dskarch_info);
return (B_TRUE);
}
void poll_host(int host_id) {
char query1[BUFSIZE];
char query2[BUFSIZE];
char *query3;
char query4[BUFSIZE];
char errstr[512];
int num_rows;
int host_status;
int assert_fail = 0;
char *poll_result = NULL;
char logmessage[LOGSIZE];
char update_sql[BUFSIZE];
reindex_t *reindex;
target_t *entry;
host_t *host;
ping_t *ping;
MYSQL mysql;
MYSQL_RES *result;
MYSQL_ROW row;
/* allocate host and ping structures with appropriate values */
host = (host_t *) malloc(sizeof(host_t));
ping = (ping_t *) malloc(sizeof(ping_t));
#ifndef OLD_MYSQL
mysql_thread_init();
#endif
snprintf(query1, sizeof(query1), "select action,hostname,snmp_community,snmp_version,snmp_username,snmp_password,rrd_name,rrd_path,arg1,arg2,arg3,local_data_id,rrd_num,snmp_port,snmp_timeout from poller_item where host_id=%i order by rrd_path,rrd_name", host_id);
snprintf(query2, sizeof(query2), "select id, hostname,snmp_community,snmp_version,snmp_port,snmp_timeout,status,status_event_count,status_fail_date,status_rec_date,status_last_error,min_time,max_time,cur_time,avg_time,total_polls,failed_polls,availability from host where id=%i", host_id);
snprintf(query4, sizeof(query4), "select data_query_id,action,op,assert_value,arg1 from poller_reindex where host_id=%i", host_id);
db_connect(set.dbdb, &mysql);
/* get data about this host */
result = db_query(&mysql, query2);
num_rows = (int)mysql_num_rows(result);
if (num_rows != 1) {
snprintf(logmessage, LOGSIZE, "Host[%i] ERROR: Unknown Host ID", host_id);
cacti_log(logmessage);
return;
}
row = mysql_fetch_row(result);
/* populate host structure */
host->id = atoi(row[0]);
if (row[1] != NULL) snprintf(host->hostname, sizeof(host->hostname), "%s", row[1]);
if (row[2] != NULL) snprintf(host->snmp_community, sizeof(host->snmp_community), "%s", row[2]);
host->snmp_version = atoi(row[3]);
host->snmp_port = atoi(row[4]);
host->snmp_timeout = atoi(row[5]);
if (row[6] != NULL) host->status = atoi(row[6]);
host->status_event_count = atoi(row[7]);
snprintf(host->status_fail_date, sizeof(host->status_fail_date), "%s", row[8]);
snprintf(host->status_rec_date, sizeof(host->status_rec_date), "%s", row[9]);
snprintf(host->status_last_error, sizeof(host->status_last_error), "%s", row[10]);
host->min_time = atof(row[11]);
host->max_time = atof(row[12]);
host->cur_time = atof(row[13]);
host->avg_time = atof(row[14]);
host->total_polls = atoi(row[15]);
host->failed_polls = atoi(row[16]);
host->availability = atof(row[17]);
host->ignore_host = 0;
/* initialize SNMP */
snmp_host_init(host);
/* perform a check to see if the host is alive by polling it's SysDesc
* if the host down from an snmp perspective, don't poll it.
* function sets the ignore_host bit */
if ((set.availability_method == AVAIL_SNMP) && (host->snmp_community == "")) {
update_host_status(HOST_UP, host, ping, set.availability_method);
if (set.verbose >= POLLER_VERBOSITY_MEDIUM) {
snprintf(logmessage, LOGSIZE, "Host[%s] No host availability check possible for '%s'\n", host->id, host->hostname);
cacti_log(logmessage);
}
} else {
if (ping_host(host, ping) == HOST_UP) {
update_host_status(HOST_UP, host, ping, set.availability_method);
} else {
host->ignore_host = 1;
update_host_status(HOST_DOWN, host, ping, set.availability_method);
}
}
/* update host table */
snprintf(update_sql, sizeof(update_sql), "update host set status='%i',status_event_count='%i', status_fail_date='%s',status_rec_date='%s',status_last_error='%s',min_time='%f',max_time='%f',cur_time='%f',avg_time='%f',total_polls='%i',failed_polls='%i',availability='%.4f' where id='%i'\n",
host->status,
host->status_event_count,
host->status_fail_date,
host->status_rec_date,
host->status_last_error,
host->min_time,
host->max_time,
host->cur_time,
host->avg_time,
host->total_polls,
host->failed_polls,
host->availability,
host->id);
db_insert(&mysql, update_sql);
/* do the reindex check for this host */
if (!host->ignore_host) {
reindex = (reindex_t *) malloc(sizeof(reindex_t));
result = db_query(&mysql, query4);
num_rows = (int)mysql_num_rows(result);
if (num_rows > 0) {
if (set.verbose == POLLER_VERBOSITY_DEBUG) {
snprintf(logmessage, LOGSIZE, "Host[%i] RECACHE: Processing %i items in the auto reindex cache for '%s'\n", host->id, num_rows, host->hostname);
cacti_log(logmessage);
}
while ((row = mysql_fetch_row(result))) {
assert_fail = 0;
reindex->data_query_id = atoi(row[0]);
reindex->action = atoi(row[1]);
if (row[2] != NULL) snprintf(reindex->op, sizeof(reindex->op), "%s", row[2]);
if (row[3] != NULL) snprintf(reindex->assert_value, sizeof(reindex->assert_value), "%s", row[3]);
if (row[4] != NULL) snprintf(reindex->arg1, sizeof(reindex->arg1), "%s", row[4]);
switch(reindex->action) {
case POLLER_ACTION_SNMP: /* snmp */
poll_result = snmp_get(host, reindex->arg1);
break;
case POLLER_ACTION_SCRIPT: /* script (popen) */
poll_result = exec_poll(host, reindex->arg1);
break;
}
/* assume ok if host is up and result wasn't obtained */
if (!strcmp(poll_result,"U")) {
assert_fail = 0;
} else if ((!strcmp(reindex->op, "=")) && (strcmp(reindex->assert_value,poll_result) != 0)) {
snprintf(logmessage, LOGSIZE, "ASSERT: '%s=%s' failed. Recaching host '%s', data query #%i\n", reindex->assert_value, poll_result, host->hostname, reindex->data_query_id);
cacti_log(logmessage);
query3 = (char *)malloc(128);
snprintf(query3, 128, "insert into poller_command (poller_id,time,action,command) values (0,NOW(),%i,'%i:%i')", POLLER_COMMAND_REINDEX, host_id, reindex->data_query_id);
db_insert(&mysql, query3);
free(query3);
assert_fail = 1;
} else if ((!strcmp(reindex->op, ">")) && (strtoll(reindex->assert_value, (char **)NULL, 10) <= strtoll(poll_result, (char **)NULL, 10))) {
snprintf(logmessage, LOGSIZE, "ASSERT: '%s>%s' failed. Recaching host '%s', data query #%i\n", reindex->assert_value, poll_result, host->hostname, reindex->data_query_id);
cacti_log(logmessage);
query3 = (char *)malloc(128);
snprintf(query3, 128, "insert into poller_command (poller_id,time,action,command) values (0,NOW(),%i,'%i:%i')", POLLER_COMMAND_REINDEX, host_id, reindex->data_query_id);
db_insert(&mysql, query3);
free(query3);
assert_fail = 1;
} else if ((!strcmp(reindex->op, "<")) && (strtoll(reindex->assert_value, (char **)NULL, 10) >= strtoll(poll_result, (char **)NULL, 10))) {
snprintf(logmessage, LOGSIZE, "ASSERT: '%s<%s' failed. Recaching host '%s', data query #%i\n", reindex->assert_value, poll_result, host->hostname, reindex->data_query_id);
cacti_log(logmessage);
query3 = (char *)malloc(128);
snprintf(query3, 128, "insert into poller_command (poller_id,time,action,command) values (0,NOW(),%i,'%i:%i')", POLLER_COMMAND_REINDEX, host_id, reindex->data_query_id);
db_insert(&mysql, query3);
free(query3);
assert_fail = 1;
}
/* update 'poller_reindex' with the correct information if:
* 1) the assert fails
* 2) the OP code is > or < meaning the current value could have changed without causing
* the assert to fail */
if ((assert_fail == 1) || (!strcmp(reindex->op, ">")) || (!strcmp(reindex->op, ">"))) {
query3 = (char *)malloc(255);
snprintf(query3, 255, "update poller_reindex set assert_value='%s' where host_id='%i' and data_query_id='%i' and arg1='%s'", poll_result, host_id, reindex->data_query_id, reindex->arg1);
db_insert(&mysql, query3);
free(query3);
}
free(poll_result);
}
}
}
/* retreive each hosts polling items from poller cache */
entry = (target_t *) malloc(sizeof(target_t));
result = db_query(&mysql, query1);
num_rows = (int)mysql_num_rows(result);
while ((row = mysql_fetch_row(result)) && (!host->ignore_host)) {
/* initialize monitored object */
entry->target_id = 0;
entry->action = atoi(row[0]);
if (row[1] != NULL) snprintf(entry->hostname, sizeof(entry->hostname), "%s", row[1]);
if (row[2] != NULL) {
snprintf(entry->snmp_community, sizeof(entry->snmp_community), "%s", row[2]);
} else {
snprintf(entry->snmp_community, sizeof(entry->snmp_community), "%s", "");
}
entry->snmp_version = atoi(row[3]);
if (row[4] != NULL) snprintf(entry->snmp_username, sizeof(entry->snmp_username), "%s", row[4]);
if (row[5] != NULL) snprintf(entry->snmp_password, sizeof(entry->snmp_password), "%s", row[5]);
if (row[6] != NULL) snprintf(entry->rrd_name, sizeof(entry->rrd_name), "%s", row[6]);
if (row[7] != NULL) snprintf(entry->rrd_path, sizeof(entry->rrd_path), "%s", row[7]);
if (row[8] != NULL) snprintf(entry->arg1, sizeof(entry->arg1), "%s", row[8]);
if (row[9] != NULL) snprintf(entry->arg2, sizeof(entry->arg2), "%s", row[9]);
if (row[10] != NULL) snprintf(entry->arg3, sizeof(entry->arg3), "%s", row[10]);
entry->local_data_id = atoi(row[11]);
entry->rrd_num = atoi(row[12]);
entry->snmp_port = atoi(row[13]);
entry->snmp_timeout = atoi(row[14]);
snprintf(entry->result, sizeof(entry->result), "%s", "U");
if (!host->ignore_host) {
switch(entry->action) {
case POLLER_ACTION_SNMP: /* raw SNMP poll */
poll_result = snmp_get(host, entry->arg1);
snprintf(entry->result, sizeof(entry->result), "%s", poll_result);
free(poll_result);
if (host->ignore_host) {
snprintf(logmessage, LOGSIZE, "Host[%i] ERROR: SNMP timeout detected [%i milliseconds], ignoring host '%s'\n", host_id, host->snmp_timeout, host->hostname);
cacti_log(logmessage);
snprintf(entry->result, sizeof(entry->result), "%s", "U");
} else {
/* remove double or single quotes from string */
strncpy(entry->result, strip_quotes(entry->result), sizeof(entry->result));
/* detect erroneous non-numeric result */
if (!is_numeric(entry->result)) {
strncpy(errstr, entry->result,sizeof(errstr));
snprintf(logmessage, LOGSIZE, "Host[%i] WARNING: Result from SNMP not valid. Partial Result: %.20s...\n", host_id, errstr);
cacti_log(logmessage);
strncpy(entry->result, "U", sizeof(entry->result));
}
}
if (set.verbose >= POLLER_VERBOSITY_MEDIUM) {
snprintf(logmessage, LOGSIZE, "Host[%i] SNMP: v%i: %s, dsname: %s, oid: %s, value: %s\n", host_id, host->snmp_version, host->hostname, entry->rrd_name, entry->arg1, entry->result);
cacti_log(logmessage);
}
break;
case POLLER_ACTION_SCRIPT: /* execute script file */
poll_result = exec_poll(host, entry->arg1);
snprintf(entry->result, sizeof(entry->result), "%s", poll_result);
free(poll_result);
/* remove double or single quotes from string */
strncpy(entry->result, strip_quotes(entry->result), sizeof(entry->result));
/* detect erroneous result. can be non-numeric */
if (!validate_result(entry->result)) {
strncpy(errstr, (char *) strip_string_crlf(entry->result),sizeof(errstr));
snprintf(logmessage, LOGSIZE, "Host[%i] WARNING: Result from SCRIPT not valid. Partial Result: %.20s...\n", host_id, errstr);
cacti_log(logmessage);
strncpy(entry->result, "U", sizeof(entry->result));
}
if (set.verbose >= POLLER_VERBOSITY_MEDIUM) {
snprintf(logmessage, LOGSIZE, "Host[%i] SCRIPT: %s, output: %s\n", host_id, entry->arg1, entry->result);
cacti_log(logmessage);
}
break;
case POLLER_ACTION_PHP_SCRIPT_SERVER: /* execute script server */
poll_result = php_cmd(entry->arg1);
snprintf(entry->result, sizeof(entry->result), "%s", poll_result);
free(poll_result);
/* remove double or single quotes from string */
strncpy(entry->result, strip_quotes(entry->result), sizeof(entry->result));
/* detect erroneous result. can be non-numeric */
if (!validate_result(entry->result)) {
strncpy(errstr, entry->result, sizeof(errstr));
snprintf(logmessage, LOGSIZE, "Host[%i] WARNING: Result from SERVER not valid. Partial Result: %.20s...\n", host_id, errstr);
cacti_log(logmessage);
strncpy(entry->result, "U", sizeof(entry->result));
}
if (set.verbose >= POLLER_VERBOSITY_MEDIUM) {
snprintf(logmessage, LOGSIZE, "Host[%i] SERVER: %s, output: %s\n", host_id, entry->arg1, entry->result);
cacti_log(logmessage);
}
break;
default: /* unknown action, generate error */
snprintf(logmessage, LOGSIZE, "Host[%i] ERROR: Unknown Poller Action: %s\n", host_id, entry->arg1);
cacti_log(logmessage);
break;
}
}
if (entry->result != NULL) {
/* format database insert string */
query3 = (char *)malloc(sizeof(entry->result) + sizeof(entry->local_data_id) + 128);
snprintf(query3, (sizeof(entry->result) + sizeof(entry->local_data_id) + 128), "insert into poller_output (local_data_id,rrd_name,time,output) values (%i,'%s','%s','%s')", entry->local_data_id, entry->rrd_name, start_datetime, entry->result);
db_insert(&mysql, query3);
free(query3);
}
}
/* cleanup memory and prepare for function exit */
snmp_host_cleanup(host);
free(entry);
free(host);
free(ping);
mysql_free_result(result);
#ifndef OLD_MYSQL
mysql_thread_end();
#endif
mysql_close(&mysql);
if (set.verbose == POLLER_VERBOSITY_DEBUG) {
snprintf(logmessage, LOGSIZE, "Host[%i] DEBUG: HOST COMPLETE: About to Exit Host Polling Thread Function\n", host_id);
cacti_log(logmessage);
}
}
