磁盘已满，我无法通过SSH登录到实例

Question

尝试SSH到我的实例时出现错误。它告诉我检查控制台串行输出。根据我的理解，我的磁盘没有空间。我该怎么办？我需要SSH来清除空间，但不能SSH，因为没有空间！

这是我所看到的：

Starting OpenBSD Secure Shell server: sshdopen: No space left on device 
Oct 14 13:18:13 instance-1 sshd[2771]: Server listening on 0.0.0.0 port 22. 
[?25l[?1c7[1GOct 14 13:18:13 instance-1 sshd[2771]: Server listening on :: port 22. 
[[32m ok [39;49m8[?25h[?0c. 
udhcpd: Disabled. Edit /etc/default/udhcpd to enable it. 
mktemp: failed to create file via template `/tmp/tmp.XXXXXXXXXX': No space left on device 
mktemp: failed to create file via template `/tmp/tmp.XXXXXXXXXX': No space left on device 
mktemp: failed to create file via template `/tmp/tmp.XXXXXXXXXX': No space left on device 
mktemp: failed to create file via template `/tmp/tmp.XXXXXXXXXX': No space left on device 
    % Total % Received % Xferd Average Speed Time Time  Time Current 
           Dload Upload Total Spent Left Speed 

    0  0 0  0 0  0  0  0 --:--:-- --:--:-- --:--:--  0 
100 2384 100 2384 0  0 1126k  0 --:--:-- --:--:-- --:--:-- 2328k 
Oct 14 13:18:13 instance-1 google: {"attributes":{"sshKeys":"ishener:ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAFbCZDZDvuIxUbH5AHYeUU/WUWaOBYI1S7Yl9k3oVFwrenn6XsMdDHKiSH2VtpenQ7mHu3YcLDFe0pO1AwJjnSO39JR/3tTVLeVbuHDTEhOhDHt0NE84S1rqHX6r591IDwLhoGnFdNibGs0Sc0uyR/kRxl5hjAWdskOm4wzald+uRctBd+hbdBmt6az7iF2UzHEV362LxUtIzaYWoo1hnhld07+eimi6t+bUHsgqDkVGaEUUDaRFWTaNlFI9UW/AMYOcu9C24molfpPKwe2R5C5HLI+8nNI7qvoGtrUZww7K5bxNQPe+bMvVitArjYItYNDU6OXvQVA/u6gnqnbt1MM= google-ssh {\"userName\":\"ishener@gmail.com\",\"expireOn\":\"2015-10-14T13:13:05+0000\"}\nishener:ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBCKT2j4VbRM6DXSjLb5UlOdzfaB4K2TvZHWGV3JD7T++EbWX87JLOKg6AdbDPWTlgKRan02TIT/Xshy28r7fCCc= google-ssh {\"userName\":\"ishener@gmail.com\",\"expireOn\":\"2015-10-14T13:12:58+0000\"}\nrsa-key-20150806:ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAQEAxtMUn200CaOuRa8bHFuqrjDiyUDrLECUf9V/ZpxT24lrqEbS1bDT7oWQwcuxQZEcrTnfeCEDeIwQpbNoOGp8NufrZUUG8jpVnVQqCHQZ3T+0Gs6et6JYxldhb0xT3KJVwQM+qnZOfwsk7co/+XOhE63u62NvUlqpGDQQUvuFY1wV3B7Rfjhg2JYEHCMswLRnSfnvyxp6+uQJ 
Oct 14 13:18:13 instance-1 google: 4THd/FlcGQJyJHUvpVQAqBIii8yc59+Rb32Xlyii6YU4+G60dfP6ON1iX2qkxJT5/mIkPfd3yPizbGsYhJbaqNQHPUE9hdqTlfk3gyA8S6SySNwViQtUqOH+sbo+suiJHHwr67V/qw== rsa-key-20150806\n"},"cpuPlatform":"Intel Ivy Bridge","description":"","disks":[{"deviceName":"instance-1","index":0,"mode":"READ_WRITE","type":"PERSISTENT"}],"hostname":"instance-1.c.united-wavelet-102819.internal","id":1871676137734806120,"image":"","machineType":"projects/273410245967/machineTypes/g1-small","maintenanceEvent":"NONE","networkInterfaces":[{"accessConfigs":[{"externalIp":"104.197.52.39","type":"ONE_TO_ONE_NAT"}],"forwardedIps":[],"ip":"10.240.238.207","network":"projects/273410245967/networks/default"}],"scheduling":{"automaticRestart":"TRUE","onHostMaintenance":"MIGRATE"},"serviceAccounts":{"273410245967-compute@developer.gserviceaccount.com":{"aliases":["default"],"email":"273410245967-compute@developer.gserviceaccount.com","scopes":["https://www.googleapis.com/auth/devstorage.read_only","https://www.googleapis.com/auth/logging.write"]},"default":{"al 
Oct 14 13:18:13 instance-1 google: iases":["default"],"email":"273410245967-compute@developer.gserviceaccount.com","scopes":["https://www.googleapis.com/auth/devstorage.read_only","https://www.googleapis.com/auth/logging.write"]}},"tags":["http-server","https-server"],"virtualClock":{"driftToken":"12943060760861539723"},"zone":"projects/273410245967/zones/us-central1-f"} 
Oct 14 13:18:13 instance-1 google: No startup script found in metadata. 
[....] startpar: service(s) returned failure: tomcat7 ...[?25l[?1c7[1G[[31mFAIL[39;49m8[?25h[?0c [31mfailed![39;49m 
Oct 14 13:18:40 instance-1 accounts-from-metadata: WARNING Could not update /home/rsa-key-20150806/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:18:40 instance-1 accounts-from-metadata: WARNING Could not update /home/ishener/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:18:40 instance-1 accounts-from-metadata: WARNING Could not update /home/ishener_zaph/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:18:45 instance-1 sshd[2884]: Connection closed by 173.194.92.49 [preauth] 
Oct 14 13:18:46 instance-1 sshd[2886]: Connection closed by 173.194.92.49 [preauth] 
Oct 14 13:18:47 instance-1 accounts-from-metadata: WARNING Could not update /home/rsa-key-20150806/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:18:47 instance-1 accounts-from-metadata: WARNING Could not update /home/ishener/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:18:47 instance-1 accounts-from-metadata: WARNING Could not update /home/ishener_zaph/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:18:49 instance-1 sshd[2903]: Connection closed by 173.194.92.52 [preauth] 
Oct 14 13:18:51 instance-1 sshd[2905]: Connection closed by 173.194.92.52 [preauth] 
Oct 14 13:18:55 instance-1 sshd[2907]: Connection closed by 173.194.92.52 [preauth] 
Oct 14 13:19:02 instance-1 sshd[2909]: Connection closed by 173.194.92.48 [preauth] 
Oct 14 13:19:17 instance-1 sshd[2912]: Connection closed by 173.194.92.48 [preauth] 
Oct 14 13:19:58 instance-1 accounts-from-metadata: WARNING Could not update /home/ishener_zaph/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:19:58 instance-1 accounts-from-metadata: WARNING Could not update /home/rsa-key-20150806/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:19:58 instance-1 accounts-from-metadata: WARNING Could not update /home/ishener/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:20:01 instance-1 accounts-from-metadata: WARNING Could not update /home/ishener_zaph/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:20:01 instance-1 accounts-from-metadata: WARNING Could not update /home/rsa-key-20150806/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:20:01 instance-1 accounts-from-metadata: WARNING Could not update /home/ishener/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:20:02 instance-1 sshd[2929]: Connection closed by 173.194.92.51 [preauth] 
Oct 14 13:20:03 instance-1 sshd[2946]: Connection closed by 173.194.92.50 [preauth] 
Oct 14 13:20:06 instance-1 sshd[2948]: Connection closed by 173.194.92.49 [preauth] 
Oct 14 13:20:09 instance-1 sshd[2950]: Connection closed by 173.194.92.51 [preauth] 
Oct 14 13:20:13 instance-1 sshd[2952]: Connection closed by 173.194.92.50 [preauth] 
Oct 14 13:20:25 instance-1 sshd[2955]: Connection closed by 173.194.92.49 [preauth] 
Oct 14 13:20:36 instance-1 sshd[2957]: Connection closed by 173.194.92.52 [preauth] 
Oct 14 13:20:55 instance-1 sshd[2959]: Connection closed by 173.194.92.52 [preauth] 
Oct 14 13:21:01 instance-1 accounts-from-metadata: WARNING Could not update /home/ishener_zaph/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:21:01 instance-1 accounts-from-metadata: WARNING Could not update /home/rsa-key-20150806/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:21:01 instance-1 accounts-from-metadata: WARNING Could not update /home/ishener/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:21:34 instance-1 sshd[2977]: Connection closed by 173.194.92.51 [preauth] 
Oct 14 13:23:01 instance-1 accounts-from-metadata: WARNING Could not update /home/rsa-key-20150806/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:23:01 instance-1 accounts-from-metadata: WARNING Could not update /home/ishener_zaph/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 
Oct 14 13:23:01 instance-1 accounts-from-metadata: WARNING Could not update /home/ishener/.ssh/authorized_keys due to [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/'] 

Answer 1

你有不同的方案来解决这个问题：

1. Check if your operating system supports automatic resizing：如果是这样，使用云控制台，您可以编辑虚拟机的根磁盘，并提高其尺寸。您的虚拟机实例可以在重新启动实例后自动调整分区大小以识别额外的空间。

2. 使用Interactive Serial Console feature登录到您的虚拟机并清理您的虚拟机的磁盘或将它们复制到另一个存储，如果您以后需要它们。

3. 如果您知道要删除的数据，可以配置startup script以删除文件并重新启动虚拟机以运行脚本（例如rm/tmp/*）。

4. 您可以分离永久磁盘并将该磁盘作为附加磁盘附加到另一台计算机上。在临时机器上，如果您稍后需要它们，您可以安装它并清理数据或将它们复制到另一个存储器。最后用相同的引导磁盘重新创建原始实例。您可以按照此video中描述的相同步骤将磁盘添加到其他Linux VM，但添加现有的启动磁盘而不是创建新磁盘。

5. Check if your operating system supports automatic resizing：如果是，则创建永久磁盘的快照，从快照创建一个大尺寸的新永久磁盘。最后用这个更大的启动磁盘重新创建原始实例。