前几天开了一个我的世界服务器，但是买的服务器是4h4g的，内存有点不足，很快就被霍霍空了。想要加内存又贵的离谱。于是有了一个想法：通过Velocity端搭建子服务器（已老实，下次一定买雨云的）
- 介绍与下载
Velocity is the modern, high-performance proxy. Designed with performance and stability in mind, it’s a full alternative to Waterfall with its own plugin ecosystem.
直白点来说就是代理端，可以让你的服务器划分各个子服务器。
需要代理端的几类用户：
1、我有一台服务器A，但是我担心暴露A的iP会受到攻击。
2、我的玩家很多，单个服务器性能不足，需要划分生存一区二区
3、要写教程骗积分的
- 安装与配置
这里以雨云的MCSM面板为例
进入文件管理，删掉server.properties，上传velocity3.4.jar
修改启动脚本为
java -jar velocity3.4.jar
返回，开启服务器。
服务端没有eula.txt，无需同意。运行成功后关闭服务器，打开文件管理，可见这个toml文件
这是服务器配置文件的汉化。
# 配置版本。请勿更改此项
config-version = "2.7"
# 代理服务器绑定端口
bind = "0.0.0.0:25565"
# MOTD，当玩家将你的服务器添加到他们的服务器列表时，将显示这串内容。
# 支持中文，但请将汉字转换为unicode编码
# 只接受MiniMessage格式。
motd = "<#09add3>一个Velocity服务器"
# 显示的最大玩家数量？（Velocity不支持控制在线玩家数量的上限，仅为显示值）
show-max-players = 500
# 是否启用正版验证
online-mode = true
# 是否强制执行代理新的公钥安全标准？
force-key-authentication = true
# 如果来自此代理的客户端的ISP/AS与来自Mojang的身份验证服务器的不同，
# 玩家将被踢出。这将阻止一些VPN和代理连接，但是一种较弱的保护形式。
prevent-client-proxy-connections = false
# 我们是否应该将IP地址和其他数据转发给后端服务器？
# 可用选项：
# - "none"：不进行转发。所有玩家将显示是从代理连接的，并将具有离线模式UUID。
# - "legacy"：以前BungeeCord兼容的格式转发玩家IP和UUID。
# 如果你运行的是使用Minecraft 1.12或更低版本的服务器，请使用这个。
# - "bungeeguard"：以前BungeeGuard插件支持的格式转发玩家IP和UUID。
# 如果你运行的是使用Minecraft 1.12或更低版本的服务器，并且无法实现网络级别的防火墙（在共享主机上），请使用这个。
# - "modern"：作为登录过程的一部分使用Velocity的原生转发来转发玩家IP和UUID。仅适用于Minecraft 1.13或更高版本。
player-info-forwarding-mode = "NONE"
# 如果你使用的是modern或BungeeGuard IP转发，请在这里配置密钥文件。
# 文件应该是UTF-8编码的，并且不为空。
forwarding-secret-file = "forwarding.secret"
# 是否显示你的服务器支持Forge？如果你运行的是模组服务器，我们建议开启这个。
# 如果你的网络持续运行一个模组包，考虑使用ping-passthrough = "mods"以获得更美观的服务器列表显示。
announce-forge = false
# 如果启用，并且代理处于在线模式，如果发生重复的连接尝试，Velocity将踢出任何在线的现有玩家。
kick-existing-players = false
# Velocity是否应该将服务器列表ping请求传递给后端服务器？
# 可用选项：
# - "disabled"：不进行传递。velocity.toml和server-icon.png
# 将决定初始的服务器列表ping响应。
# - "mods"：只从你的后端服务器传递模组列表到响应中。
# 尝试列表（或强制主机）中的第一个具有模组列表的服务器将被使用。如果没有可以联系的后端服务器，Velocity将不会显示任何模组信息。
# - "description"：使用后端服务器的描述和模组列表。
# 尝试列表（或强制主机）中第一个响应的服务器将被用于描述和模组列表。
# - "all"：使用后端服务器的响应作为代理响应。如果没有服务器可以联系，将使用Velocity配置。
ping-passthrough = "DISABLED"
# 如果不启用，则玩家IP地址将在日志中被<ip address withheld>替换
enable-player-address-logging = true
[servers]
# 在这里配置你的服务器。每个键代表服务器的名称，值代表要连接的服务器的IP地址。
lobby = "127.0.0.1:30066"
factions = "127.0.0.1:30067"
minigames = "127.0.0.1:30068"
# 当玩家登录或被服务器踢出时，我们应该按什么顺序尝试服务器。
try = [
"lobby"
]
[forced-hosts]
# 在这里配置你的强制主机。
"lobby.example.com" = [
"lobby"
]
"factions.example.com" = [
"factions"
]
"minigames.example.com" = [
"minigames"
]
[advanced]
# Minecraft数据包需要有多大才进行压缩。将其设置为0将压缩所有数据包，
# 设置为-1将完全禁用压缩。
compression-threshold = 256
# 应该进行多少压缩（从0到9）。默认是-1，使用默认级别6。
compression-level = -1
# 客户端在最后一次连接后多久可以连接（以毫秒为单位）。默认为三秒。禁用此功能，请将其设置为0。
login-ratelimit = 3000
# 在这里指定连接超时的自定义超时时间。默认是五秒。
connection-timeout = 5000
# 在这里指定连接的读取超时时间。默认是30秒。
read-timeout = 30000
# 启用与HAProxy的PROXY协议的兼容性。如果你不知道这是用于什么的，那么不要启用它。
haproxy-protocol = false
# 在代理上启用TCP快速打开支持。需要在Linux上运行代理。
tcp-fast-open = false
# 在Velocity上启用BungeeCord插件消息通道支持。
bungee-plugin-message-channel = true
# 显示客户端对代理的ping请求。
show-ping-requests = false
# 默认情况下，Velocity将尝试优雅地处理用户意外断开与服务器的连接的情况，通过尝试将用户回退，
# 除了读取超时的情况。BungeeCord会断开用户连接。你可以禁用此设置以使用BungeeCord的行为。
failover-on-unexpected-server-disconnect = true
# 向1.13+客户端声明代理命令。
announce-proxy-commands = true
# 启用命令执行的日志记录
log-command-executions = false
# 启用记录玩家连接到代理、切换服务器和从代理断开连接的情况。
log-player-connections = true
# 允许接收通过Transfer数据包（Minecraft 1.20.5）从其他主机转移来的玩家。
accepts-transfers = false
[query]
# 是否启用响应GameSpy 4查询响应？
enabled = false
# 查询协监听端口
port = 25565
# 这是报告给查询服务的地图名称。
map = "Velocity"
# 是否默认显示插件在查询响应中
show-plugins = false
其中有几项需要我们注意的。
首先就是
bind = "0.0.0.0:25565"
和最后的
port = 25565
在这里，我们需要修改为服务器开放端口
online-mode = true
老生常谈的正版验证。即使子服务器未开启正版验证，这开了也是进不了服务器哒
player-info-forwarding-mode = "NONE"
这个高版本建议改为modern，否则ban-ip会导致所有人被ban，因为显示的是从同一个iP进入到游戏里的
[servers]
# 在这里配置你的服务器。每个键代表服务器的名称，值代表要连接的服务器的IP地址。
lobby = "127.0.0.1:30066"
factions = "127.0.0.1:30067"
minigames = "127.0.0.1:30068"
# 当玩家登录或被服务器踢出时，我们应该按什么顺序尝试服务器。
try = [
"lobby"
]
[forced-hosts]
# 在这里配置你的强制主机。
"lobby.example.com" = [
"lobby"
]
"factions.example.com" = [
"factions"
]
"minigames.example.com" = [
"minigames"
]
最重要的就是这一段。配置服务器的信息
前面三个是子服的iP，try中天下顺序，并删除[forced-hosts]中的内容
最后保存，可以选择上传server-icon.png
我的服务器配置如下
# Config version. Do not change this
config-version = "2.7"
# What port should the proxy be bound to? By default, we'll bind to all addresses on port 25565.
bind = "0.0.0.0:25565"
# What should be the MOTD? This gets displayed when the player adds your server to
# their server list. Only MiniMessage format is accepted.
motd = "<#09add3>A Velocity Server"
# What should we display for the maximum number of players? (Velocity does not support a cap
# on the number of players online.)
show-max-players = 500
# Should we authenticate players with Mojang? By default, this is on.
online-mode = false
# Should the proxy enforce the new public key security standard? By default, this is on.
force-key-authentication = true
# If client's ISP/AS sent from this proxy is different from the one from Mojang's
# authentication server, the player is kicked. This disallows some VPN and proxy
# connections but is a weak form of protection.
prevent-client-proxy-connections = false
# Should we forward IP addresses and other data to backend servers?
# Available options:
# - "none": No forwarding will be done. All players will appear to be connecting
# from the proxy and will have offline-mode UUIDs.
# - "legacy": Forward player IPs and UUIDs in a BungeeCord-compatible format. Use this
# if you run servers using Minecraft 1.12 or lower.
# - "bungeeguard": Forward player IPs and UUIDs in a format supported by the BungeeGuard
# plugin. Use this if you run servers using Minecraft 1.12 or lower, and are
# unable to implement network level firewalling (on a shared host).
# - "modern": Forward player IPs and UUIDs as part of the login process using
# Velocity's native forwarding. Only applicable for Minecraft 1.13 or higher.
player-info-forwarding-mode = "NONE"
# If you are using modern or BungeeGuard IP forwarding, configure a file that contains a unique secret here.
# The file is expected to be UTF-8 encoded and not empty.
forwarding-secret-file = "forwarding.secret"
# Announce whether or not your server supports Forge. If you run a modded server, we
# suggest turning this on.
#
# If your network runs one modpack consistently, consider using ping-passthrough = "mods"
# instead for a nicer display in the server list.
announce-forge = false
# If enabled (default is false) and the proxy is in online mode, Velocity will kick
# any existing player who is online if a duplicate connection attempt is made.
kick-existing-players = false
# Should Velocity pass server list ping requests to a backend server?
# Available options:
# - "disabled": No pass-through will be done. The velocity.toml and server-icon.png
# will determine the initial server list ping response.
# - "mods": Passes only the mod list from your backend server into the response.
# The first server in your try list (or forced host) with a mod list will be
# used. If no backend servers can be contacted, Velocity won't display any
# mod information.
# - "description": Uses the description and mod list from the backend server. The first
# server in the try (or forced host) list that responds is used for the
# description and mod list.
# - "all": Uses the backend server's response as the proxy response. The Velocity
# configuration is used if no servers could be contacted.
ping-passthrough = "DISABLED"
# If not enabled (default is true) player IP addresses will be replaced by <ip address withheld> in logs
enable-player-address-logging = true
[servers]
# Configure your servers here. Each key represents the server's name, and the value
# represents the IP address of the server to connect to.
lobby = "*.*.*.*:24463"
factions = "*.*.*.*:24463"
minigames = "*.*.*.*:24463"
# In what order we should try servers when a player logs in or is kicked from a server.
try = [
"lobby"
]
[advanced]
# How large a Minecraft packet has to be before we compress it. Setting this to zero will
# compress all packets, and setting it to -1 will disable compression entirely.
compression-threshold = 256
# How much compression should be done (from 0-9). The default is -1, which uses the
# default level of 6.
compression-level = -1
# How fast (in milliseconds) are clients allowed to connect after the last connection? By
# default, this is three seconds. Disable this by setting this to 0.
login-ratelimit = 3000
# Specify a custom timeout for connection timeouts here. The default is five seconds.
connection-timeout = 5000
# Specify a read timeout for connections here. The default is 30 seconds.
read-timeout = 30000
# Enables compatibility with HAProxy's PROXY protocol. If you don't know what this is for, then
# don't enable it.
haproxy-protocol = false
# Enables TCP fast open support on the proxy. Requires the proxy to run on Linux.
tcp-fast-open = false
# Enables BungeeCord plugin messaging channel support on Velocity.
bungee-plugin-message-channel = true
# Shows ping requests to the proxy from clients.
show-ping-requests = false
# By default, Velocity will attempt to gracefully handle situations where the user unexpectedly
# loses connection to the server without an explicit disconnect message by attempting to fall the
# user back, except in the case of read timeouts. BungeeCord will disconnect the user instead. You
# can disable this setting to use the BungeeCord behavior.
failover-on-unexpected-server-disconnect = true
# Declares the proxy commands to 1.13+ clients.
announce-proxy-commands = true
# Enables the logging of commands
log-command-executions = false
# Enables logging of player connections when connecting to the proxy, switching servers
# and disconnecting from the proxy.
log-player-connections = true
# Allows players transferred from other hosts via the
# Transfer packet (Minecraft 1.20.5) to be received.
accepts-transfers = false
[query]
# Whether to enable responding to GameSpy 4 query responses or not.
enabled = false
# If query is enabled, on what port should the query protocol listen on?
port = 25565
# This is the map name that is reported to the query services.
map = "Velocity"
# Whether plugins should be shown in query response by default or not
show-plugins = false
最后就是激动人心的时刻：开启服务器！
- 演示
运行服务器,输入服务器iP,可以搜索到服务器,可以正确加载
代理端可以看到转发信息，服务端展示为代理iP（我没有设置Modern转发）
可以在游戏内使用/server切换子服
