Zabbix SendEmail

[WilliamSG]

Hi guys...

I'll be brevity:

Here my SendMail configurations:

* this is a test conf, I'll change the "zabbixmailto, subject and body" values to $1, $2, and $3.

and here the Zabbix result:


But I'm not receiving the mail.
If i run the script manualy, on linux console, it works fine.

Anyone can help me?

[jvalenzani]

Please, check server log for errors.

[WilliamSG]

Here follows

1318:20140729:155819.523 enabling Zabbix agent checks on host "cenw07n05664": host became available
9110:20140729:155829.317 zbx_popen(): failed to create a process group: [13] Permission denied
1312:20140729:155905.938 Zabbix agent item "vfs.fs.size[C:,pfree]" on host "cenw07n05664" failed: first network error, wait for 15 seconds
1318:20140729:155923.529 Zabbix agent item "vfs.fs.size[C:,pfree]" on host "cenw07n05664" failed: another network error, wait for 15 seconds
1318:20140729:155941.533 Zabbix agent item "agent.ping" on host "cenw07n05664" failed: another network error, wait for 15 seconds
9128:20140729:155959.324 zbx_popen(): failed to create a process group: [13] Permission denied
1318:20140729:155959.536 temporarily disabling Zabbix agent checks on host "cenw07n05664": host unavailable

And here a "ls -la" on Alertscript folder

-rwxrwxrwx. 1 root root 423 Jul 28 13:59 sendemail.sh

What the bold line means?

[jvalenzani]

Seems that the user do not have permission to fork the new process.

/******************************************************************************
 *                                                                            *
 * Function: zbx_popen                                                        *
 *                                                                            *
 * Purpose: this function opens a process by creating a pipe, forking,        *
 *          and invoking the shell                                            *
 *                                                                            *
 * Parameters: pid     - [OUT] child process PID                              *
 *             command - [IN] a pointer to a null-terminated string           *
 *                       containing a shell command line                      *
 *                                                                            *
 * Return value: on success, reading file descriptor is returned. On error,   *
 *               -1 is returned, and errno is set appropriately               *
 *                                                                            *
 * Author: Alexander Vladishev                                                *
 *                                                                            *
 ******************************************************************************/
static int	zbx_popen(pid_t *pid, const char *command)
{
	const char	*__function_name = "zbx_popen";
	int		fd[2];

	zabbix_log(LOG_LEVEL_DEBUG, "In %s() command:'%s'", __function_name, command);

	if (-1 == pipe(fd))
		return -1;

	if (-1 == (*pid = zbx_fork()))
	{
		close(fd[0]);
		close(fd[1]);
		return -1;
	}

	if (0 != *pid)	/* parent process */
	{
		close(fd[1]);

		zabbix_log(LOG_LEVEL_DEBUG, "End of %s():%d", __function_name, fd[0]);

		return fd[0];
	}

	/* child process */
	close(fd[0]);
	dup2(fd[1], STDOUT_FILENO);
	close(fd[1]);

	/* set the child as the process group leader, otherwise orphans may be left after timeout */
	if (-1 == setpgid(0, 0))
	{
		zabbix_log(LOG_LEVEL_ERR, "%s(): failed to create a process group: %s",
				__function_name, zbx_strerror(errno));
		exit(0);
	}

	zabbix_log(LOG_LEVEL_DEBUG, "%s(): executing script", __function_name);

	execl("/bin/sh", "sh", "-c", command, NULL);

	/* execl() returns only when an error occurs */
	zabbix_log(LOG_LEVEL_WARNING, "execl() failed for [%s]: %s", command, zbx_strerror(errno));
	exit(0);
}

[WilliamSG]

Well... is it an internal error? from "zabbix" user maybe...