急求 关于 tmpfs挂载之后日志无法创建的问题

[wangshiyang]

用的ssd硬盘，本意想把log放到内存，fstab内容

代码： 全选

tmpfs   /tmp            tmpfs   defaults,noatime,mode=1777      0       0
tmpfs   /var/tmp        tmpfs   defaults,noatime,mode=1777      0       0
tmpfs   /var/log        tmpfs   defaults,noatime,mode=1777      0       0

安装了mysql ,nginx 但是老是提示

代码： 全选

Nov 19 12:15:25 shawn mysqld_safe[797]: 151119 12:15:25 mysqld_safe Can't log to error log and syslog at the same time.  Remove all --log-error configuration options for --syslog to take effect.
Nov 19 12:15:25 shawn mysqld_safe[797]: 151119 12:15:25 mysqld_safe Logging to '/var/log/mysql/error.log'.
Nov 19 12:15:25 shawn mysqld_safe[797]: touch: 无法创建"/var/log/mysql/error.log": 没有那个文件或目录
Nov 19 12:15:25 shawn mysqld_safe[797]: chmod: 无法访问"/var/log/mysql/error.log": 没有那个文件或目录
Nov 19 12:15:25 shawn systemd[1]: Started Light Display Manager.
Nov 19 12:15:25 shawn mysqld_safe[797]: 151119 12:15:25 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
Nov 19 12:15:25 shawn mysqld_safe[797]: /usr/bin/mysqld_safe: 126: /usr/bin/mysqld_safe: cannot create /var/log/mysql/error.log: Directory nonexistent
Nov 19 12:15:25 shawn mysqld_safe[797]: /usr/bin/mysqld_safe: 1: eval: cannot create /var/log/mysql/error.log: Directory nonexistent
Nov 19 12:15:25 shawn mysqld_safe[797]: 151119 12:15:25 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
Nov 19 12:15:25 shawn systemd[1]: mysql.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Nov 19 12:15:25 shawn mysqld_safe[797]: /usr/bin/mysqld_safe: 126: /usr/bin/mysqld_safe: cannot create /var/log/mysql/error.log: Directory nonexistent

代码： 全选

Nov 19 12:15:25 shawn nginx[787]: nginx: [alert] could not open error log file: open() "/var/log/nginx/error.log" failed (2: No such file or directory)
Nov 19 12:15:25 shawn nginx[787]: 2015/11/19 12:15:25 [emerg] 787#0: open() "/var/log/nginx/access.log" failed (2: No such file or directory)
Nov 19 12:15:25 shawn nginx[787]: nginx: configuration file /etc/nginx/nginx.conf test failed

[vickycq]

1.
可能的原因是 nginx / mysql 在自动创建日志目录 /var/log/nginx/ 和 /var/log/mysql/ 上遇到了问题，导致无法创建入职文件

论坛首页 » 版本支持 » Ubuntu 14.10

确认操作系统版本
根据 14.10 / 15.04, 15.10 init 系统的不同，可能需要不同的解决方法

需自行在两服务的启动脚本中添加 mkdir 命令。

参考 http://stackoverflow.com/questions/1050 ... g-on-tmpfs


2.
另外可考虑使用 ramlog 一类程序，定期将 /var/log/ 内容回存到硬盘

参考
https://wiki.debian.org/SSDOptimization
http://www.tremende.com/ramlog/