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mod_block_registrations/README.markdown

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mod_block_registrations/README.markdown @ 4877:adc6241e5d16

mod_measure_process: Report the enforced limit The soft limit is what the kernel actually enforces, while the hard limit is is how far you can change the soft limit without privileges. Unless the process dynamically adjusts the soft limit, knowing the hard limit is not as useful as knowing the soft limit. Reporting the soft limit and the number of in-use FDs allows placing alerts on expressions like 'process_open_fds / process_max_fds >= 0.95'
author Kim Alvefur <zash@zash.se>
date Tue, 18 Jan 2022 18:55:20 +0100
parent 2715:9b43b7fc3558
child 5421:a58ba20b3a71
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1 Introduction
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2 ============
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4 On a server with public registration it is usually desirable to prevent
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5 registration of certain "reserved" accounts, such as "admin".
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7 This plugin allows you to reserve individual usernames, or those
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8 matching certain patterns. It also allows you to ensure that usernames
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9 conform to a certain pattern.
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11 Configuration
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12 =============
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14 Enable the module as any other:
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16 modules_enabled = {
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17 "block_registrations";
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18 }
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20 You can then set some options to configure your desired policy:
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22 Option Default Description
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23 -------------------------------- --------------- -------------------------------------------------------------------------------------------------------------------------------------------------
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24 block\_registrations\_users `{ "admin" }` A list of reserved usernames
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25 block\_registrations\_matching `{ }` A list of [Lua patterns](http://www.lua.org/manual/5.1/manual.html#5.4.1) matching reserved usernames (slower than block\_registrations\_users)
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26 block\_registrations\_require `nil` A pattern that registered user accounts MUST match to be allowed
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28 Some examples:
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29
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30 block_registrations_users = { "admin", "root", "xmpp" }
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31 block_registrations_matching = {
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32 "master$" -- matches anything ending with master: postmaster, hostmaster, webmaster, etc.
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33 }
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34 block_registrations_require = "^[a-zA-Z0-9_.-]+$" -- Allow only simple ASCII characters in usernames
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36 Compatibility
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37 =============
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39 ----- -------------
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40 0.9 Works
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41 0.8 Should work
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42 ----- -------------
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