我的虚拟机正常运行2年甚至更长时间没有任何问题。 几天前，我无法访问它所托管的网站。
我尝试过ssh，但无法连接，所以我重新启动了虚拟机，无法启动。
从串行控制台附加日志。 我看到解决元数据服务器的问题。
有什么不对？
谢谢！
Nov 27 13:21:54 (none) /etc/mysql/debian-start[2326]: Upgrading MySQL tables if necessary.
[[36minfo[39;49m] Checking for tables which need an upgrade, are corrupt or were
not closed cleanly..
curl: (6) Couldn't resolve host 'metadata.google.internal'
Nov 27 13:21:54 (none) google:
Nov 27 13:21:54 (none) google: No startup script found in metadata.
Nov 27 13:21:54 (none) /etc/mysql/debian-start[2330]: /usr/bin/mysql_upgrade: the '--basedir' option is always ignored
Nov 27 13:21:54 (none) /etc/mysql/debian-start[2330]: Looking for 'mysql' as: /usr/bin/mysql
Nov 27 13:21:54 (none) /etc/mysql/debian-start[2330]: Looking for 'mysqlcheck' as: /usr/bin/mysqlcheck
Nov 27 13:21:54 (none) /etc/mysql/debian-start[2330]: This installation of MySQL is already upgraded to 5.5.52, use --force if you still need to run mysql_upgrade
Nov 27 13:21:54 (none) /etc/mysql/debian-start[2377]: Checking for insecure root accounts.
Nov 27 13:21:54 (none) /etc/mysql/debian-start[2382]: Triggering myisam-recover for all MyISAM tables
Nov 27 13:21:56 (none) accounts-from-metadata: WARNING error while trying to update accounts: <urlopen error [Errno 101] Network is unreachable>
Nov 27 13:22:01 (none) accounts-from-metadata: WARNING error while trying to update accounts: <urlopen error [Errno 101] Network is unreachable>
Nov 27 13:22:06 (none) accounts-from-metadata: WARNING error while trying to update accounts: <urlopen error [Errno 101] Network is unreachable>
Nov 27 13:22:11 (none) accounts-from-metadata: WARNING error while trying to update accounts: <urlopen error [Errno 101] Network is unreachable>
Nov 27 13:22:16 (none) accounts-from-metadata: WARNING error while trying to update accounts: <urlopen error [Errno 101] Network is unreachable>
Nov 27 13:22:21 (none) accounts-from-metadata: WARNING error while trying to update accounts: <urlopen error [Errno 101] Network is unreachable>
Nov 27 13:22:26 (none) accounts-from-metadata: WARNING error while trying to update accounts: <urlopen error [Errno 101] Network is unreachable>
Nov 27 13:22:31 (none) accounts-from-metadata: WARNING error while trying to update accounts: <urlopen error [Errno 101] Network is unreachable>
Nov 27 13:22:37 (none) accounts-from-metadata: WARNING error while trying to update accounts: <urlopen error [Errno 101] Network is unreachable>
Nov 27 13:22:42 (none) accounts-from-metadata: WARNING error while trying to update accounts: <urlopen error [Errno 101] Network is unreachable>
Nov 27 13:22:47 (none) accounts-from-metadata: WARNING error while trying to update accounts: <urlopen error [Errno 101] Network is unreachable>