使用tar备份整个centos时出错

我正在尝试此命令

tar cvpzf /TEMP_BACKUPS/backup.tgz --exclude=/proc --exclude=/lost+found  --exclude=/tmp --exclude=/TEMP_BACKUPS --exclude=/mnt --exclude=/sys / > /TEMP_BACKUPS/mylog.txt

而且我收到此错误。我已经试过两次

tar: Removing leading `/' from member names
tar: /dev/log: socket ignored
tar: Removing leading `/' from hard link targets
tar: /selinux/policy: Cannot open: Invalid argument
tar: /var/spool/postfix/public/flush: socket ignored
tar: /var/spool/postfix/public/cleanup: socket ignored
tar: /var/spool/postfix/public/showq: socket ignored
tar: /var/spool/postfix/private/defer: socket ignored
tar: /var/spool/postfix/private/virtual: socket ignored
tar: /var/spool/postfix/private/proxywrite: socket ignored
tar: /var/spool/postfix/private/verify: socket ignored
tar: /var/spool/postfix/private/anvil: socket ignored
tar: /var/spool/postfix/private/lmtp: socket ignored
tar: /var/spool/postfix/private/bounce: socket ignored
tar: /var/spool/postfix/private/relay: socket ignored
tar: /var/spool/postfix/private/scache: socket ignored
tar: /var/spool/postfix/private/retry: socket ignored
tar: /var/spool/postfix/private/error: socket ignored
tar: /var/spool/postfix/private/rewrite: socket ignored
tar: /var/spool/postfix/private/tlsmgr: socket ignored
tar: /var/spool/postfix/private/local: socket ignored
tar: /var/spool/postfix/private/discard: socket ignored
tar: /var/spool/postfix/private/trace: socket ignored
tar: /var/spool/postfix/private/smtp: socket ignored
tar: /var/spool/postfix/private/proxymap: socket ignored
tar: /var/lib/mysql/mysql.sock: socket ignored
tar: /var/www/html/run/wsgi.1458.0.1.sock: socket ignored
tar: /var/www/html/run/wsgi.4861.1.1.sock: socket ignored
tar: /var/www/html/run/wsgi.1178.0.1.sock: socket ignored
tar: /var/www/html/run/wsgi.1179.0.1.sock: socket ignored
tar: /var/run/dbus/system_bus_socket: socket ignored
tar: /var/run/abrt/abrt.socket: socket ignored
tar: /var/run/rpcbind.sock: socket ignored
tar: /var/run/portreserve/socket: socket ignored
tar: /var/run/nscd/socket: socket ignored
tar: Exiting with failure status due to previous errors

我需要怎么做才能完全备份

请注意，您的tar命令已成功完成；它只是在抱怨套接字条目。Tiffany建议使用一种机制来过滤掉那些特定的错误消息，尽管tar仍然会以错误代码退出。

您还可以向tar的-X选项提供套接字列表，以将其从备份中排除，例如：

# find / -type s -print > /tmp/sockets-to-exclude
# tar cvpzf /TEMP_BACKUPS/backup.tgz -X /tmp/sockets-to-exclude \
  --exclude=/proc --exclude=/lost+found  --exclude=/tmp \
  --exclude=/TEMP_BACKUPS --exclude=/mnt --exclude=/sys / > /TEMP_BACKUPS/mylog.txt

该技术的优点在于，它使tar的退出代码更加有用（也就是说，您可以使用退出代码来确定备份是否成功完成）。

您还可以通过用--exclude一个-X（aka --exclude-from）替换其他选项并将它们简单地列出在文件中来缩短命令行。

事实是tar成功，但打印出警告，指出那些套接字文件已被忽略

GNU tar实际上提供了抑制警告的选项。您可以使用以下命令忽略“套接字被忽略”错误，这样可以避免运行可能需要很长时间才能完成的find命令。

tar --warning='no-file-ignored' -cpzf  backup_name.tar.gz  /folder_to_backup

此链接有更多详细信息

套接字是零级文件，守护进程使用该套接字相互通信。当守护程序启动和停止时，将根据需要创建和销毁它们。可以放心地忽略它们。

您可以随时使用它们来摆脱它们 tar <my_options> 2> >(grep -v 'socket ignored' >&2)