我aws似乎无法启动asterisk：
ubuntu@ip-172-31-14-19:~$
ubuntu@ip-172-31-14-19:~$ systemctl status asterisk.service
● asterisk.service - Asterisk PBX
Loaded: loaded (/lib/systemd/system/asterisk.service; enabled; vendor preset: enab
Active: activating (auto-restart) (Result: exit-code) since Tue 2017-11-14 08:45:1
Docs: man:asterisk(8)
Process: 24907 ExecStart=/usr/sbin/asterisk -g -f -U asterisk (code=exited, status=
Main PID: 24907 (code=exited, status=1/FAILURE)
Nov 14 08:45:14 ip-172-31-14-19 systemd[1]: asterisk.service: Main process exited, co
Nov 14 08:45:14 ip-172-31-14-19 systemd[1]: asterisk.service: Unit entered failed sta
Nov 14 08:45:14 ip-172-31-14-19 systemd[1]: asterisk.service: Failed with result 'exi
lines 1-10/10 (END)
ubuntu@ip-172-31-14-19:~$
要启动服务，先创建一个 sudo 用户？
ubuntu@ip-172-31-14-19:~$
ubuntu@ip-172-31-14-19:~$ uptime
22:05:27 up 0 min, 1 user, load average: 2.44, 0.65, 0.22
ubuntu@ip-172-31-14-19:~$
ubuntu@ip-172-31-14-19:~$ asterisk -rvvvv
Unable to connect to remote asterisk (does /var/run/asterisk/asterisk.ctl exist?)
ubuntu@ip-172-31-14-19:~$
ubuntu@ip-172-31-14-19:~$ sudo asterisk -rvvvv
Unable to connect to remote asterisk (does /var/run/asterisk/asterisk.ctl exist?)
ubuntu@ip-172-31-14-19:~$
ubuntu@ip-172-31-14-19:~$ sudo asterisk -cvvvvvvvvvv
Asterisk already running on /var/run/asterisk/asterisk.ctl. Use 'asterisk -r' to connect.
ubuntu@ip-172-31-14-19:~$
ubuntu@ip-172-31-14-19:~$ asterisk -r
Unable to connect to remote asterisk (does /var/run/asterisk/asterisk.ctl exist?)
ubuntu@ip-172-31-14-19:~$
ubuntu@ip-172-31-14-19:~$ asterisk -rvv
Unable to connect to remote asterisk (does /var/run/asterisk/asterisk.ctl exist?)
ubuntu@ip-172-31-14-19:~$
ubuntu@ip-172-31-14-19:~$ /etc/init.d/asterisk start
[....] Starting asterisk (via systemctl): asterisk.service==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===
Authentication is required to start 'asterisk.service'.
Authenticating as: Ubuntu (ubuntu)
Password:
polkit-agent-helper-1: pam_authenticate failed: Authentication failure
==== AUTHENTICATION FAILED ===
Failed to start asterisk.service: Access denied
See system logs and 'systemctl status asterisk.service' for details.
failed!
ubuntu@ip-172-31-14-19:~$
具体方向：
步骤 10. 启动 Asterisk
现在我们可以启动Asterisk了，在命令行上运行以下命令来启动Asterisk：
星号-cvvvvvvvvvv
如果 Asterisk 启动正常，请输入：
核心立即停止
关闭 Asterisk 并退出 Asterisk 控制台。
然后启动 asterisk 作为守护进程：
/etc/init.d/asterisk 启动
然后您可以使用以下命令连接到 Asterisk 控制台：
星号 -rvvvvvvvvvv
不像当地的系统，上的默认用户没有已知密码aws。