Sudo永远是第一次运行

我遇到了这个问题，第一次运行sudo命令需要大约30秒钟才会提示我input密码。 （注意：input密码后，所有以下sudo命令立即运行）

我已经得到尽可能运行下面的命令：

 # As Root chmod u+s /usr/bin/strace # As My User strace -r -o trace1.log sudo echo hi 

哪些事情显示了发生放缓的地方。 问题是日志有点超出我的理解。 这是什么日志说：

  0.000039 read(11, "AGREE_UNIX_FD\r\n", 2048) = 15 0.000038 poll([{fd=11, events=POLLOUT}], 1, -1) = 1 ([{fd=11, revents=POLLOUT}]) 0.000036 sendto(11, "BEGIN\r\n", 7, MSG_NOSIGNAL, NULL, 0) = 7 0.000085 poll([{fd=11, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=11, revents=POLLOUT}]) 0.000054 sendmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\1\0\1\0\0\0\0\1\0\0\0n\0\0\0\1\1o\0\25\0\0\0/org/fre"..., iov_len=128}, {iov_base="", iov_len=0}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 128 0.000539 poll([{fd=11, events=POLLIN}], 1, 25000) = 1 ([{fd=11, revents=POLLIN}]) 0.000060 recvmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\2\1\1\v\0\0\0\1\0\0\0=\0\0\0\6\1s\0\6\0\0\0:1.834\0\0"..., iov_len=2048}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 262 0.000086 recvmsg(11, {msg_namelen=0}, MSG_CMSG_CLOEXEC) = -1 EAGAIN (Resource temporarily unavailable) 0.000050 eventfd2(0, EFD_CLOEXEC|EFD_NONBLOCK) = 12 0.000039 fstat(11, {st_mode=S_IFSOCK|0777, st_size=0, ...}) = 0 0.000032 fcntl(11, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK) 0.000145 sendmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\1\1\1\204\0\0\0\2\0\0\0\177\0\0\0\1\1o\0\25\0\0\0/org/fre"..., iov_len=144}, {iov_base="\177\0\0\0type='signal',sender='net.re"..., iov_len=132}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 276 0.000245 sendmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\1\1\1\246\0\0\0\3\0\0\0\177\0\0\0\1\1o\0\25\0\0\0/org/fre"..., iov_len=144}, {iov_base="\241\0\0\0type='signal',sender='org.fr"..., iov_len=166}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 310 0.000239 sendmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\1\0\1\33\0\0\0\4\0\0\0\177\0\0\0\1\1o\0\25\0\0\0/org/fre"..., iov_len=144}, {iov_base="\26\0\0\0net.reactivated.Fprint\0", iov_len=27}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 171 0.000250 sendmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\1\0\1\0\0\0\0\5\0\0\0\203\0\0\0\1\1o\0\37\0\0\0/net/rea"..., iov_len=152}, {iov_base="", iov_len=0}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 152 0.005535 poll([{fd=11, events=POLLIN}], 1, 25000) = 1 ([{fd=11, revents=POLLIN}]) 0.000064 recvmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\3\1\1G\0\0\0\3\0\0\0u\0\0\0\6\1s\0\6\0\0\0:1.834\0\0"..., iov_len=2048}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 207 0.000099 write(12, "\1\0\0\0\0\0\0\0", 8) = 8 0.000038 recvmsg(11, {msg_namelen=0}, MSG_CMSG_CLOEXEC) = -1 EAGAIN (Resource temporarily unavailable) 0.000037 poll([{fd=11, events=POLLIN}], 1, 25000) = 1 ([{fd=11, revents=POLLIN}]) 24.999999 recvmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\3\1\1c\0\0\0\4\0\0\0m\0\0\0\6\1s\0\6\0\0\0:1.834\0\0"..., iov_len=2048}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 227 0.000096 write(12, "\1\0\0\0\0\0\0\0", 8) = 8 0.000035 recvmsg(11, {msg_namelen=0}, MSG_CMSG_CLOEXEC) = -1 EAGAIN (Resource temporarily unavailable) 0.000121 sendmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\1\1\1\204\0\0\0\6\0\0\0\177\0\0\0\1\1o\0\25\0\0\0/org/fre"..., iov_len=144}, {iov_base="\177\0\0\0type='signal',sender='net.re"..., iov_len=132}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 276 0.000081 sendmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\1\1\1\246\0\0\0\7\0\0\0\177\0\0\0\1\1o\0\25\0\0\0/org/fre"..., iov_len=144}, {iov_base="\241\0\0\0type='signal',sender='org.fr"..., iov_len=166}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 310 0.000151 close(11) = 0 0.000058 close(12) = 0 0.000045 getuid() = 1001 

我的问题：这些日志究竟意味着什么，如何修复sudo需要很长时间才能login？

• 在Docker中运行vpnc时，得到“无法打开”/ proc / sys / net / ipv4 / route / flush“：只读文件系统'
• 更改所有者权限将打破nginx中的htdocs
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• 组www-data拥有的文件夹中的权限
• Freenas跨平台权限和samba共享

这是运行Fedora 26的虚拟机。

另外，我相信这些问题只是以root身份运行以下命令后才会发生。 所以这很可能是由于做权限问题，但我不知道肯定。

 rpm --setperms -a rpm --setugids -a 

更新：

在运行journalctl /usr/bin/dbus-daemon我发现了一堆这样的错误：

 Oct 13 11:25:32 server.example.com dbus-daemon[718]: [system] Activating via systemd: service name='net.reactivated.Fprint' unit='fprintd.service' requested by ':1.848' (uid=0 pid=29713 comm="sudo vim trace.log " label="unconfined_u:unconfined Oct 13 11:25:57 server.example.com dbus-daemon[718]: [system] Failed to activate service 'net.reactivated.Fprint': timed out (service_start_timeout=25000ms) Oct 13 11:26:04 server.example.com dbus-daemon[718]: [system] Activating via systemd: service name='net.reactivated.Fprint' unit='fprintd.service' requested by ':1.850' (uid=0 pid=29769 comm="sudo vim trace.log " label="unconfined_u:unconfined Oct 13 11:26:29 server.example.com dbus-daemon[718]: [system] Failed to activate service 'net.reactivated.Fprint': timed out (service_start_timeout=25000ms) Oct 13 13:44:07 server.example.com dbus-daemon[718]: [system] Activating via systemd: service name='net.reactivated.Fprint' unit='fprintd.service' requested by ':1.908' (uid=0 pid=31397 comm="sudo vim trace.log " label="unconfined_u:unconfined Oct 13 13:44:32 server.example.com dbus-daemon[718]: [system] Failed to activate service 'net.reactivated.Fprint': timed out (service_start_timeout=25000ms)