开启或关闭SELinux

安全增强型Linux(SELinux)是一个Linux内核的功能,它提供支持访问控制的安全政策保护机制。本文介绍如何开启或关闭SELinux,并且避免系统无法启动的问题。

背景信息

一般情况下,开启SELinux会提高系统的安全性,但是会破坏操作系统的文件,造成系统无法启动的问题。如果您所在的企业或团队具有十分严格的安全策略,要求在Linux操作系统中开启SELinux,您可以参考本文的步骤开启,避免系统无法启动的问题。本教程使用的操作系统为:CentOS 7.6 64位。

开启SELinux

  1. 远程连接ECS实例。
  2. 在ECS实例上运行以下命令,编辑SELinux的config文件。sudo vi /etc/selinux/config
  3. 找到SELINUX=disabled,按i进入编辑模式,通过修改该参数开启SELinux。SELINUX状态您可以根据需求修改参数,开启SELinux有以下两种模式:
    • 强制模式SELINUX=enforcing:表示所有违反安全策略的行为都将被禁止。
    • 宽容模式SELINUX=permissive:表示所有违反安全策略的行为不被禁止,但是会在日志中作记录。
  4. 修改完成后,按下键盘Esc键,执行命令:wq,保存并退出文件。说明修改config文件后,需要重启实例,但直接重启实例将会出现系统无法启动的错误。因此在重启之前需要在根目录下新建autorelabel文件。
  5. 在根目录下新建隐藏文件autorelabel,实例重启后,SELinux会自动重新标记所有系统文件。sudo touch /.autorelabel
  6. 重启ECS实例。sudo shutdown -r now

验证SELinux状态

  1. 远程连接ECS实例。
  2. 运行命令getenforce,验证SELinux状态。返回状态应为enforcing或者permissive,本教程当前状态为EnforcingSELinux状态
  3. 运行命令sestatus,获取更多SELinux信息。参数信息SELinux status显示为enabled,表示SELinux已启动。更多SELinux信息

关闭SELinux

  1. 远程连接ECS实例。
  2. 运行命令getenforce,验证SELinux状态。返回状态如果是Enforcing,表明SELinux已开启。
  3. 选择临时关闭或者永久关闭SELinux。
    • 执行命令setenforce 0临时关闭SELinux。
    • 永久关闭SELinux。
      1. 运行以下命令,编辑SELinux的config文件。sudo vi /etc/selinux/config
      2. 找到SELINUX=enforcing,按i进入编辑模式,将参数SELINUX=enforcing修改为SELINUX=disabled更改SELinux状态
      3. 修改完成后,按下键盘Esc键,执行命令:wq,保存并退出文件。
      4. 重启ECS实例。sudo shutdown -r now
      5. 重启后,运行命令getenforce,验证SELinux状态为Disabled,表明SELinux已关闭。关闭SELinux

所有评论(203)

  1. lutherkathlee说道:

    This message is used to verify that this feed (feedId:71873087544510464) belongs to me (userId:71872995029635072). Join me in enjoying the next generation information browser https://follow.is.

  2. Code of destiny说道:

    I am really inspired together with your writing abilities as smartly as with the structure in your blog. Is that this a paid topic or did you modify it yourself? Either way keep up the nice high quality writing, it’s uncommon to peer a nice weblog like this one nowadays!

  3. 1 WIN说道:

    Официальный Telegram канал 1win Casinо. Казинo и ставки от 1вин. Фриспины, актуальное зеркало официального сайта 1 win. Регистрируйся в ван вин, соверши вход в один вин, получай бонус используя промокод и начните играть на реальные деньги.
    https://t.me/s/Official_1win_kanal/1621

  4. It’s in fact very difficult in this busy life to listen nwws on Television, therefore
    I just use the web for that reason, and obtin the most up-to-date news. https://glassi-freespins.blogspot.com/2025/08/how-to-claim-glassi-casino-free-spins.html

  5. This is really interesting, You are a very skilled blogger.
    I have joined your feed andd look forward too seeking
    more of your fantastic post. Also, I’ve shared your web site in my social networks! https://www.Cdlcruzdasalmas.com.br/portal_de_empregos/companies/tonebet-casino/

  6. IndianIgniz说道:

    indian medicine: indian pharmacy – Indiava Meds

  7. DavidDeaky说道:

    AeroMedsRx: sildenafil online – AeroMedsRx

  8. TristanSwamb说道:

    buy Kamagra online [url=https://bluewavemeds.xyz/#]order Kamagra discreetly[/url] buy Kamagra online

  9. DavidDeaky说道:

    sildenafil over the counter: Viagra tablet online – Cheap generic Viagra

  10. ZacharyWhosy说道:

    https://aeromedsrx.xyz/# AeroMedsRx

  11. TristanSwamb说道:

    kamagra [url=https://bluewavemeds.xyz/#]Blue Wave Meds[/url] online pharmacy for Kamagra

  12. DavidDeaky说道:

    cialis generic: EveraMeds – Buy Tadalafil 5mg

  13. KennethNeuro说道:

    AeroMedsRx: AeroMedsRx – sildenafil 50 mg price

  14. TristanSwamb说道:

    EveraMeds [url=https://everameds.xyz/#]Cialis over the counter[/url] Cialis without a doctor prescription

  15. DavidDeaky说道:

    Cheap Viagra 100mg: AeroMedsRx – Generic Viagra online

  16. ZacharyWhosy说道:

    https://bluewavemeds.com/# kamagra oral jelly

  17. TristanSwamb说道:

    Buy Tadalafil 10mg [url=http://everameds.com/#]Cialis over the counter[/url] EveraMeds

  18. DavidDeaky说道:

    Generic Cialis price: EveraMeds – Tadalafil price

  19. ZacharyWhosy说道:

    https://aeromedsrx.xyz/# sildenafil online

  20. KennethNeuro说道:

    AeroMedsRx: Cheap generic Viagra – Viagra without a doctor prescription Canada

  21. TristanSwamb说道:

    Buy generic 100mg Viagra online [url=https://aeromedsrx.xyz/#]buy Viagra online[/url] Generic Viagra online

  22. DavidDeaky说道:

    AeroMedsRx: Sildenafil 100mg price – AeroMedsRx

  23. ZacharyWhosy说道:

    https://bluewavemeds.com/# order Kamagra discreetly

  24. TristanSwamb说道:

    viagra without prescription [url=https://aeromedsrx.com/#]AeroMedsRx[/url] AeroMedsRx

  25. ZacharyWhosy说道:

    https://bluewavemeds.xyz/# Blue Wave Meds

  26. TristanSwamb说道:

    Buy Tadalafil 10mg [url=https://everameds.com/#]cialis for sale[/url] EveraMeds

  27. DavidDeaky说道:

    trusted Kamagra supplier in the US: Blue Wave Meds – order Kamagra discreetly

  28. KennethNeuro说道:

    EveraMeds: EveraMeds – EveraMeds

  29. ZacharyWhosy说道:

    https://everameds.com/# Generic Cialis without a doctor prescription

  30. TristanSwamb说道:

    Sildenafil Citrate Tablets 100mg [url=https://aeromedsrx.com/#]Generic Viagra online[/url] buy Viagra over the counter

  31. DavidDeaky说道:

    kamagra: BlueWaveMeds – order Kamagra discreetly

  32. DavidDeaky说道:

    EveraMeds: Cheap Cialis – EveraMeds

  33. ZacharyWhosy说道:

    http://everameds.com/# EveraMeds

  34. TristanSwamb说道:

    Buy Cialis online [url=http://everameds.com/#]Generic Cialis price[/url] EveraMeds

  35. ZacharyWhosy说道:

    http://everameds.com/# Cheap Cialis

  36. ZacharyWhosy说道:

    https://everameds.xyz/# cialis for sale

  37. TristanSwamb说道:

    Cialis 20mg price in USA [url=http://everameds.com/#]Generic Cialis price[/url] EveraMeds

  38. KennethNeuro说道:

    EveraMeds: EveraMeds – EveraMeds

  39. DavidDeaky说道:

    Cheap Sildenafil 100mg: Order Viagra 50 mg online – AeroMedsRx

  40. ZacharyWhosy说道:

    https://bluewavemeds.com/# fast delivery Kamagra pills

  41. TristanSwamb说道:

    online pharmacy for Kamagra [url=https://bluewavemeds.xyz/#]order Kamagra discreetly[/url] BlueWaveMeds

  42. DavidDeaky说道:

    Tadalafil price: EveraMeds – EveraMeds

  43. ZacharyWhosy说道:

    https://bluewavemeds.xyz/# BlueWaveMeds

  44. ZacharyWhosy说道:

    https://bluewavemeds.xyz/# online pharmacy for Kamagra

  45. DavidDeaky说道:

    Cialis without a doctor prescription: Generic Tadalafil 20mg price – EveraMeds

  46. TristanSwamb说道:

    Generic Tadalafil 20mg price [url=http://everameds.com/#]Cialis over the counter[/url] cheapest cialis

  47. TristanSwamb说道:

    Buy Tadalafil 20mg [url=http://everameds.com/#]Buy Tadalafil 20mg[/url] EveraMeds

  48. ZacharyWhosy说道:

    https://bluewavemeds.com/# Blue Wave Meds

  49. TristanSwamb说道:

    sildenafil 50 mg price [url=https://aeromedsrx.xyz/#]AeroMedsRx[/url] AeroMedsRx

  50. KennethNeuro说道:

    kamagra oral jelly: kamagra oral jelly – order Kamagra discreetly

  51. ZacharyWhosy说道:

    https://everameds.xyz/# buy cialis pill

  52. DavidDeaky说道:

    kamagra oral jelly: order Kamagra discreetly – online pharmacy for Kamagra

  53. TristanSwamb说道:

    kamagra oral jelly [url=https://bluewavemeds.xyz/#]fast delivery Kamagra pills[/url] order Kamagra discreetly

  54. ZacharyWhosy说道:

    https://aeromedsrx.com/# cheap viagra

  55. DavidDeaky说道:

    kamagra oral jelly: buy Kamagra online – order Kamagra discreetly

  56. ZacharyWhosy说道:

    https://bluewavemeds.xyz/# order Kamagra discreetly

  57. DavidDeaky说道:

    EveraMeds: EveraMeds – EveraMeds

  58. TristanSwamb说道:

    online pharmacy for Kamagra [url=http://bluewavemeds.com/#]buy Kamagra online[/url] Blue Wave Meds

  59. DavidDeaky说道:

    sildenafil online: order viagra – AeroMedsRx

  60. RobertPople说道:

    Iso Pharm: Iso Pharm – Iso Pharm

  61. HunterBruro说道:

    IsoIndiaPharm: Iso Pharm – best online pharmacy india

  62. Richarddioli说道:

    best canadian pharmacy http://mhfapharm.com/# MHFA Pharm

  63. RobertPople说道:

    IsoIndiaPharm: IsoIndiaPharm – india pharmacy

  64. Forestwef说道:

    precription drugs from canada [url=https://mhfapharm.xyz/#]MhfaPharm[/url] MHFA Pharm

  65. Richarddioli说道:

    canadian online drugs https://uvapharm.xyz/# Uva Pharm

  66. RobertPople说道:

    IsoIndiaPharm: indian pharmacy online – Iso Pharm

  67. Richarddioli说道:

    canadian pharmacy review http://isoindiapharm.com/# world pharmacy india

  68. RobertPople说道:

    MhfaPharm: MHFA Pharm – MHFA Pharm

  69. Richarddioli说道:

    best rated canadian pharmacy http://uvapharm.com/# UvaPharm

  70. Forestwef说道:

    Uva Pharm [url=https://uvapharm.xyz/#]UvaPharm[/url] Uva Pharm

  71. RobertPople说道:

    canadian pharmacy ed medications: MHFA Pharm – canadian pharmacy mall

  72. HunterBruro说道:

    mexican drug store: UvaPharm – mexico pharmacy

  73. Richarddioli说道:

    canadian drug pharmacy https://isoindiapharm.xyz/# IsoIndiaPharm

  74. RobertPople说道:

    IsoIndiaPharm: Iso Pharm – IsoIndiaPharm

  75. Richarddioli说道:

    canadian pharmacy meds reviews https://isoindiapharm.com/# Iso Pharm

  76. RobertPople说道:

    IsoIndiaPharm: Iso Pharm – IsoIndiaPharm

  77. Forestwef说道:

    Uva Pharm [url=http://uvapharm.com/#]buying prescription drugs in mexico[/url] Uva Pharm

  78. Richarddioli说道:

    my canadian pharmacy review https://mhfapharm.xyz/# canadian pharmacy ltd

  79. HunterBruro说道:

    UvaPharm: UvaPharm – UvaPharm

  80. RobertPople说道:

    online mexico pharmacy: Uva Pharm – farmacia mexicana online

  81. Richarddioli说道:

    canadian compounding pharmacy https://mhfapharm.com/# MhfaPharm

  82. RobertPople说道:

    Uva Pharm: Uva Pharm – Uva Pharm

  83. HunterBruro说道:

    MHFA Pharm: MHFA Pharm – MHFA Pharm

  84. Richarddioli说道:

    recommended canadian pharmacies https://uvapharm.com/# UvaPharm

  85. Forestwef说道:

    IsoIndiaPharm [url=https://isoindiapharm.xyz/#]online pharmacy india[/url] IsoIndiaPharm

  86. Richarddioli说道:

    canadian pharmacy world http://uvapharm.com/# worldwide pharmacy

  87. RobertPople说道:

    Uva Pharm: Uva Pharm – UvaPharm

  88. Richarddioli说道:

    northwest canadian pharmacy http://uvapharm.com/# mexican farmacia

  89. Forestwef说道:

    pharmacy canadian superstore [url=http://mhfapharm.com/#]MHFA Pharm[/url] canadian pharmacy ed medications

  90. RobertPople说道:

    prescriptions from mexico: mexico farmacia – п»їmexican pharmacy

  91. Richarddioli说道:

    best online canadian pharmacy https://uvapharm.com/# UvaPharm

  92. CharlesProgs说道:

    order propecia without insurance: BswFinasteride – BswFinasteride

  93. PatrickGrous说道:

    online shopping pharmacy india http://pmaivermectin.com/# liquid ivermectin for dogs

  94. DouglasEvepe说道:

    ivermectin 9 mg tablet: PMA Ivermectin – PMA Ivermectin

  95. Davidalege说道:

    stromectol adult lice [url=http://pmaivermectin.com/#]PMA Ivermectin[/url] PmaIvermectin

  96. CharlesProgs说道:

    UclaMetformin: metformin 104 pill – metformin 500mg

  97. DouglasEvepe说道:

    ivermectin 6mg dosage: PMA Ivermectin – how long does ivermectin take to work

  98. PatrickGrous说道:

    indianpharmacy com https://pmaivermectin.com/# PmaIvermectin

  99. CharlesProgs说道:

    UclaMetformin: Ucla Metformin – UclaMetformin

  100. Davidalege说道:

    buy abortion pills [url=http://socalabortionpill.com/#]buy abortion pills[/url] cytotec abortion pill

  101. PatrickGrous说道:

    buy medicines online in india http://socalabortionpill.com/# Misoprostol 200 mg buy online

  102. DouglasEvepe说道:

    PMA Ivermectin: PmaIvermectin – PMA Ivermectin

  103. CharlesProgs说道:

    is ivermectin safe for pregnant goats: PMA Ivermectin – PMA Ivermectin

  104. PatrickGrous说道:

    Online medicine order http://uclametformin.com/# Ucla Metformin

  105. CharlesProgs说道:

    buy cytotec over the counter: order cytotec online – buy cytotec online fast delivery

  106. DouglasEvepe说道:

    order propecia tablets: buy cheap propecia – BSW Finasteride

  107. PatrickGrous说道:

    indianpharmacy com https://socalabortionpill.xyz/# SocalAbortionPill

  108. Davidalege说道:

    PmaIvermectin [url=https://pmaivermectin.com/#]PmaIvermectin[/url] PmaIvermectin

  109. PatrickGrous说道:

    online shopping pharmacy india http://cytpremium.com/# SocalAbortionPill

  110. DouglasEvepe说道:

    Socal Abortion Pill: buy abortion pills – SocalAbortionPill

  111. PatrickGrous说道:

    india pharmacy http://cytpremium.com/# SocalAbortionPill

  112. DouglasEvepe说道:

    Socal Abortion Pill: Socal Abortion Pill – Socal Abortion Pill

  113. Davidalege说道:

    UclaMetformin [url=https://uclametformin.xyz/#]UclaMetformin[/url] metformin 500

  114. PatrickGrous说道:

    Online medicine home delivery http://uclametformin.com/# UclaMetformin

  115. Cialisdueta说道:

    DmuCialis: Dmu Cialis – Dmu Cialis

  116. Ramonked说道:

    Generic Cialis without a doctor prescription [url=https://dmucialis.xyz/#]Dmu Cialis[/url] cheapest cialis

  117. JoshuaFop说道:

    rx online no prior prescription https://neokamagra.com/# Kamagra 100mg price

  118. Cialisdueta说道:

    Neo Kamagra: Neo Kamagra – Neo Kamagra

  119. Ramonked说道:

    Musc Pharm [url=http://muscpharm.com/#]MuscPharm[/url] online pharmacy canada

  120. JoshuaFop说道:

    online pharmacies without an rx https://muscpharm.com/# MuscPharm

  121. Cialisdueta说道:

    Buy Tadalafil 10mg: DmuCialis – Dmu Cialis

  122. Ramonked说道:

    Dmu Cialis [url=http://dmucialis.com/#]Buy Tadalafil 5mg[/url] Cialis 20mg price

  123. Dmuaceks说道:

    canadian pharmacy 24hr: Musc Pharm – canadian drug store viagra

  124. JoshuaFop说道:

    canadian discount drugs http://dmucialis.com/# Dmu Cialis

  125. Cialisdueta说道:

    NeoKamagra: Neo Kamagra – Neo Kamagra

  126. Ramonked说道:

    MuscPharm [url=https://muscpharm.com/#]legitimate online pharmacy[/url] MuscPharm

  127. JoshuaFop说道:

    no perscription pharmacy https://dmucialis.xyz/# DmuCialis

  128. Dmuaceks说道:

    Dmu Cialis: DmuCialis – DmuCialis

  129. Cialisdueta说道:

    Tadalafil Tablet: Dmu Cialis – Cialis without a doctor prescription

  130. Ramonked说道:

    DmuCialis [url=http://dmucialis.com/#]Cheap Cialis[/url] DmuCialis

  131. JoshuaFop说道:

    recommended canadian online pharmacies https://neokamagra.xyz/# Neo Kamagra

  132. Cialisdueta说道:

    Dmu Cialis: cialis for sale – DmuCialis

  133. Ramonked说道:

    Musc Pharm [url=https://muscpharm.com/#]Musc Pharm[/url] online pharmacy without prescription

  134. JoshuaFop说道:

    canadian pharmacy http://neokamagra.com/# NeoKamagra

  135. Ramonked说道:

    MuscPharm [url=https://muscpharm.com/#]Musc Pharm[/url] MuscPharm

  136. Cialisdueta说道:

    Kamagra tablets: NeoKamagra – sildenafil oral jelly 100mg kamagra

  137. JoshuaFop说道:

    canadian pharmacy products http://neokamagra.com/# Neo Kamagra

  138. Ramonked说道:

    best online pharmacies without a script [url=https://muscpharm.com/#]price drugs[/url] Musc Pharm

  139. JoshuaFop说道:

    price prescriptions http://dmucialis.com/# Dmu Cialis

  140. Cialisdueta说道:

    Musc Pharm: MuscPharm – Musc Pharm

  141. Ramonked说道:

    NeoKamagra [url=https://neokamagra.xyz/#]Neo Kamagra[/url] NeoKamagra

  142. Cialisdueta说道:

    DmuCialis: DmuCialis – Dmu Cialis

  143. Ramonked说道:

    MuscPharm [url=https://muscpharm.com/#]Musc Pharm[/url] Musc Pharm

  144. JoshuaFop说道:

    canadian rx pharmacy https://neokamagra.com/# Neo Kamagra

  145. Ramonked说道:

    Neo Kamagra [url=https://neokamagra.com/#]NeoKamagra[/url] sildenafil oral jelly 100mg kamagra

  146. Cialisdueta说道:

    reliable online canadian pharmacy: MuscPharm – Musc Pharm

  147. JoshuaFop说道:

    canadian overnight pharmacy https://neokamagra.com/# Neo Kamagra

  148. Cialisdueta说道:

    aarp canadian pharmacy: best online pharmacies no prescription – prescription drug pricing

  149. Dmuaceks说道:

    Neo Kamagra: Neo Kamagra – Neo Kamagra

  150. JoshuaFop说道:

    online drugs https://muscpharm.com/# Musc Pharm

  151. Cialisdueta说道:

    Neo Kamagra: NeoKamagra – NeoKamagra

  152. Dmuaceks说道:

    MuscPharm: MuscPharm – great canadian pharmacy

  153. Cialisdueta说道:

    Kamagra 100mg price: Neo Kamagra – Neo Kamagra

  154. Web说道:

    Very polished writing.

  155. JoshuaFop说道:

    canada drug store https://muscpharm.com/# cheap drugs canada

  156. Davidalege说道:

    http://muscpharm.com/# online canadian pharmacy with prescription

  157. Cialisdueta说道:

    Dmu Cialis: Dmu Cialis – DmuCialis

  158. Dmuaceks说道:

    NeoKamagra: NeoKamagra – NeoKamagra

  159. Binance说道:

    Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?

  160. JamesEvisy说道:

    online ed medicine: EdPillsAfib – EdPillsAfib

  161. Stevefed说道:

    canadian drugs cialis http://corpharmacy.com/# CorPharmacy

  162. DanielSot说道:

    low cost ed meds online: Ed Pills Afib – ed treatment online

  163. JamesEvisy说道:

    ViagraNewark: ViagraNewark – ViagraNewark

  164. WilliamTop说道:

    EdPillsAfib [url=https://edpillsafib.com/#]order ed pills[/url] EdPillsAfib

  165. Stevefed说道:

    canadian pharmacy no rx http://edpillsafib.com/# Ed Pills Afib

  166. JamesEvisy说道:

    Ed Pills Afib: erectile dysfunction online – cheapest ed meds

  167. WilliamTop说道:

    foreign pharmacy online [url=https://corpharmacy.com/#]Cor Pharmacy[/url] CorPharmacy

  168. Stevefed说道:

    canadian pharmacies reviews https://edpillsafib.com/# online erectile dysfunction pills

  169. JamesEvisy说道:

    online ed treatments: Ed Pills Afib – EdPillsAfib

  170. DanielSot说道:

    Cor Pharmacy: Cor Pharmacy – CorPharmacy

  171. WilliamTop说道:

    Ed Pills Afib [url=http://edpillsafib.com/#]EdPillsAfib[/url] ed medications cost

  172. Stevefed说道:

    online drug https://edpillsafib.com/# Ed Pills Afib

  173. JamesEvisy说道:

    legitimate online pharmacy: escrow pharmacy online – CorPharmacy

  174. DanielSot说道:

    CorPharmacy: Cor Pharmacy – CorPharmacy

  175. WilliamTop说道:

    Ed Pills Afib [url=https://edpillsafib.com/#]best ed medication online[/url] Ed Pills Afib

  176. Stevefed说道:

    discount prescription drug http://viagranewark.com/# ViagraNewark

  177. JamesEvisy说道:

    CorPharmacy: Cor Pharmacy – Cor Pharmacy

  178. DanielSot说道:

    sildenafil online: ViagraNewark – ViagraNewark

  179. Stevefed说道:

    cheap pharmacy https://corpharmacy.xyz/# Cor Pharmacy