详解ubuntu系统的/etc/sysctl.conf文件

Ubuntu系统调优:深入理解/etc/sysctl.conf,
/etc/sysctl.conf是Ubuntu中用于设置内核参数和系统优化的关键文件,包含内存交换、网络配置和安全性的调整选项。修改后需用sysctl命令应用更改,确保系统性能和安全。

参考文章:
深入理解Ubuntu的/etc/sysctl.conf文件

在Ubuntu系统中,/etc/sysctl.conf是一个重要的配置文件,它用于设置内核参数和系统调优选项。这个文件包含了许多用于调整系统行为和优化性能的设置。以下是对/etc/sysctl.conf文件的详细解释:

  1. 文件位置和权限:

    • /etc/sysctl.conf文件位于根目录下的/etc目录中。
    • 它通常需要root用户或具有sudo权限的用户才能编辑。
  2. 内核参数设置:

    • /etc/sysctl.conf文件中的每一行都表示一个内核参数设置。
    • 每行由参数名和对应的值组成,中间使用等号(=)分隔。
    • 例如:kernel.sysrq = 1表示开启sysrq功能,net.ipv4.ip_forward = 0表示禁止IP转发。
  3. 系统调优选项:

    • /etc/sysctl.conf文件中的参数可以用于优化系统性能和网络配置。
    • 可以通过修改参数值来更改默认行为,以满足特定需求。
    • 例如,可以通过调整vm.swappiness参数来控制内存交换行为,或者通过net.ipv4.tcp_syncookies参数来增加网络安全性。
  4. 配置示例:

    • /etc/sysctl.conf文件中可以包含多个配置示例,每个示例用注释(#)进行标记。
    • 注释行可用于提供相关说明或禁用特定配置。
    • 在Ubuntu系统中,文件中通常会包含一些默认的配置示例,如IPv6配置、网络性能优化、系统安全性等。
  5. 应用配置更改:

    • 在编辑完/etc/sysctl.conf文件后,需要使用sysctl命令来加载更改并使其生效。
    • 可以使用命令"sudo sysctl -p"来重新加载/etc/sysctl.conf文件并应用更改。
    • sysctl命令会读取文件中的配置并将其应用到内核中,确保更改在系统重启后仍然生效。

/etc/sysctl.conf文件是Ubuntu系统中管理内核参数和系统调优的重要配置文件之一。通过修改这个文件,你可以优化系统性能、改善网络配置和提高系统安全性。记住在修改前备份该文件,并小心谨慎地修改参数值,以确保系统的稳定性和安全性。

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nvmp/tp_package/lte/src/upgrade/ec200a/qdloader.c nvmp/tp_package/lte/src/upgrade/ec200a/qdloader.h nvmp/tp_package/lte/src/upgrade/ec200a/std_c.h nvmp/tp_package/lte/src/upgrade/ec200a/usbfs/usbfs.c nvmp/tp_package/lte/src/upgrade/ec200a/usbfs/usbfs.h nvmp/tp_package/lte/src/upgrade/le270/README nvmp/tp_package/lte/src/upgrade/le270/config/agentboot_718.bin nvmp/tp_package/lte/src/upgrade/le270/config/cfg_ec718p_usb.ini nvmp/tp_package/lte/src/upgrade/le270/config/format_ec718p.json nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/action.c nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/action.h nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/cJSON.c nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/cJSON.h nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/crc.c nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/crc.h nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/eigencomm_devices_list.h nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/eigencomm_download.c nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/global_def.h nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/ini.c nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/ini.h nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/linux_comm.c nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/linux_comm.h nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/package.c nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/package.h nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/sha256.c nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/sha256.h nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/utils.c nvmp/tp_package/lte/src/upgrade/le270/eigencomm_code/utils.h nvmp/tp_package/lte/src/upgrade/le270/fibo_upgrade.c nvmp/tp_package/lte/src/upgrade/le270/fibo_upgrade.h nvmp/tp_package/lte/src/upgrade/le270/misc_code/misc.c nvmp/tp_package/lte/src/upgrade/le270/misc_code/misc.h nvmp/tp_package/lte/src/upgrade/le270/misc_code/misc_usb.c nvmp/tp_package/lte/src/upgrade/le270/misc_code/misc_usb.h nvmp/tp_package/lte/src/upgrade/le270/misc_code/usb2tcp.c nvmp/tp_package/lte/src/upgrade/le270/misc_code/usb2tcp.h nvmp/tp_package/lte/src/usbserial_utils.c nvmp/tp_package/lte/src/usbserial_utils.h Please move or remove them before you can switch branches. Aborting duanchangxu1604@ubuntu:~/NVMP/sdk$ cd .. duanchangxu1604@ubuntu:~/NVMP$ ps aux | grep git duancha+ 3626 0.0 0.0 14224 924 pts/12 S+ 11:11 0:00 grep --color=auto git
最新发布
09-26
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