查看“FAQ:SS服务端”的源代码

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== 修改配置文件之后服务重启失败的问题 ==
使用仓库安装的 ss-libev，遇到了——修改配置文件之后服务重启失败的问题：
* 刚刚安装时，启动、开机启动，都正常，修改配置文件重启就失败；
* 和修改安装脚本安装的一样，在本地修改配置文件，上传覆盖服务器配置文件（检查了配置文件权限、所有者，均正常），结果 ss 服务就启动失败了；
: 不想管了（可能上传覆盖配置文件时要先停止服务？或者因为添加的 v2ray 插件？）

详情：
# 第一次：（这一次插件配置有问题，但应该不是原因）
#: <syntaxhighlight lang="bash" highlight="">
[root@newjersey ~]# systemctl status shadowsocks-libev -l
● shadowsocks-libev.service - Shadowsocks-libev Default Server Service
   Loaded: loaded (/usr/lib/systemd/system/shadowsocks-libev.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Wed 2021-12-01 19:33:46 UTC; 2min 17s ago
     Docs: man:shadowsocks-libev(8)
  Process: 1416 ExecStart=/usr/bin/ss-server -c $CONFFILE $DAEMON_ARGS (code=exited, status=255)
 Main PID: 1416 (code=exited, status=255)

Dec 01 19:33:46 newjersey systemd[1]: Stopped Shadowsocks-libev Default Server Service.
Dec 01 19:33:46 newjersey systemd[1]: Started Shadowsocks-libev Default Server Service.
Dec 01 19:33:46 newjersey ss-server[1416]: 2021-12-01 19:33:46 INFO: plugin "/usr/binv2ray-plugin" enabled
Dec 01 19:33:46 newjersey ss-server[1416]: 2021-12-01 19:33:46 INFO: UDP relay enabled
Dec 01 19:33:46 newjersey ss-server[1416]: 2021-12-01 19:33:46 INFO: initializing ciphers... chacha20-ietf-poly1305
Dec 01 19:33:46 newjersey ss-server[1416]: 2021-12-01 19:33:46 INFO: using nameserver: 8.8.8.8
Dec 01 19:33:46 newjersey ss-server[1416]: 2021-12-01 19:33:46 INFO: tcp server listening at 127.0.0.1:55823
Dec 01 19:33:46 newjersey systemd[1]: shadowsocks-libev.service: main process exited, code=exited, status=255/n/a
Dec 01 19:33:46 newjersey systemd[1]: Unit shadowsocks-libev.service entered failed state.
Dec 01 19:33:46 newjersey systemd[1]: shadowsocks-libev.service failed.
</syntaxhighlight>
# 第二次：（？？？）
#: <syntaxhighlight lang="bash" highlight="">
[root@newjersey ~]# systemctl status shadowsocks-libev -l
● shadowsocks-libev.service - Shadowsocks-libev Default Server Service
   Loaded: loaded (/usr/lib/systemd/system/shadowsocks-libev.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Wed 2021-12-01 19:40:54 UTC; 11s ago
     Docs: man:shadowsocks-libev(8)
  Process: 1437 ExecStart=/usr/bin/ss-server -c $CONFFILE $DAEMON_ARGS (code=exited, status=255)
 Main PID: 1437 (code=exited, status=255)

Dec 01 19:40:54 newjersey ss-server[1437]: 2021-12-01 19:40:54 INFO: UDP relay enabled
Dec 01 19:40:54 newjersey ss-server[1437]: 2021-12-01 19:40:54 INFO: initializing ciphers... chacha20-ietf-poly1305
Dec 01 19:40:54 newjersey ss-server[1437]: 2021-12-01 19:40:54 INFO: using nameserver: 8.8.8.8
Dec 01 19:40:54 newjersey ss-server[1437]: 2021-12-01 19:40:54 INFO: tcp server listening at 127.0.0.1:36569
Dec 01 19:40:54 newjersey ss-server[1437]: 2021-12-01 19:40:54 INFO: udp server listening at 0.0.0.0:443
Dec 01 19:40:54 newjersey ss-server[1437]: 2021-12-01 19:40:54 ERROR: [udp] bind: Permission denied
Dec 01 19:40:54 newjersey ss-server[1437]: 2021-12-01 19:40:54 ERROR: [udp] bind() error
Dec 01 19:40:54 newjersey systemd[1]: shadowsocks-libev.service: main process exited, code=exited, status=255/n/a
Dec 01 19:40:54 newjersey systemd[1]: Unit shadowsocks-libev.service entered failed state.
Dec 01 19:40:54 newjersey systemd[1]: shadowsocks-libev.service failed.
</syntaxhighlight>