使用 RPM/DEB 包部署 Nebula Graph 多机集群¶

Nebula Graph 不提供官方的集群部署工具，用户可以使用 RPM 或 DEB 文件手动部署集群。本文提供了部署集群的示例。

部署方案¶

机器名称	IP 地址	graphd 进程数量	storaged 进程数量	metad 进程数量
A	192.168.10.111	1	1	1
B	192.168.10.112	1	1	1
C	192.168.10.113	1	1	1
D	192.168.10.114	1	1	-
E	192.168.10.115	1	1	-

前提条件¶

准备 5 台用于部署集群的机器。
在集群中通过 NTP 服务同步时间。

手动部署流程¶

1. 安装 Nebula Graph¶

在集群的每一台服务器上都安装 Nebula Graph，安装后暂不需要启动服务。安装方式请参见：

使用 RPM 或 DEB 包安装 Nebula Graph

使用源码安装 Nebula Graph

2. 修改配置文件¶

修改每个服务器上的 Nebula Graph 配置文件。

Nebula Graph 的所有配置文件均位于安装目录的etc目录内，包括nebula-graphd.conf、nebula-metad.conf和nebula-storaged.conf，用户可以只修改所需服务的配置文件。各个机器需要修改的配置文件如下。

机器名称	待修改配置文件
A	`nebula-graphd.conf`、`nebula-storaged.conf`、`nebula-metad.conf`
B	`nebula-graphd.conf`、`nebula-storaged.conf`、`nebula-metad.conf`
C	`nebula-graphd.conf`、`nebula-storaged.conf`、`nebula-metad.conf`
D	`nebula-graphd.conf`、`nebula-storaged.conf`
E	`nebula-graphd.conf`、`nebula-storaged.conf`

用户可以参考如下配置文件的内容，仅展示集群通信的部分设置，未展示的内容为默认设置，便于用户了解集群间各个服务器的关系。

Note

主要修改的配置是meta_server_addrs，所有配置文件都需要填写所有 Meta 服务的 IP 地址和端口，同时需要修改local_ip为机器本身的联网 IP 地址。配置参数的详细说明请参见：

Meta 服务配置

Graph 服务配置

Storage 服务配置

机器 A 配置

nebula-graphd.conf

########## networking ##########
# Comma separated Meta Server Addresses
--meta_server_addrs=192.168.10.111:9559,192.168.10.112:9559,192.168.10.113:9559
# Local IP used to identify the nebula-graphd process.
# Change it to an address other than loopback if the service is distributed or
# will be accessed remotely.
--local_ip=192.168.10.111
# Network device to listen on
--listen_netdev=any
# Port to listen on
--port=9669

nebula-storaged.conf

########## networking ##########
# Comma separated Meta server addresses
--meta_server_addrs=192.168.10.111:9559,192.168.10.112:9559,192.168.10.113:9559
# Local IP used to identify the nebula-storaged process.
# Change it to an address other than loopback if the service is distributed or
# will be accessed remotely.
--local_ip=192.168.10.111
# Storage daemon listening port
--port=9779

nebula-metad.conf

########## networking ##########
# Comma separated Meta Server addresses
--meta_server_addrs=192.168.10.111:9559,192.168.10.112:9559,192.168.10.113:9559
# Local IP used to identify the nebula-metad process.
# Change it to an address other than loopback if the service is distributed or
# will be accessed remotely.
--local_ip=192.168.10.111
# Meta daemon listening port
--port=9559

机器 B 配置

nebula-graphd.conf

########## networking ##########
# Comma separated Meta Server Addresses
--meta_server_addrs=192.168.10.111:9559,192.168.10.112:9559,192.168.10.113:9559
# Local IP used to identify the nebula-graphd process.
# Change it to an address other than loopback if the service is distributed or
# will be accessed remotely.
--local_ip=192.168.10.112
# Network device to listen on
--listen_netdev=any
# Port to listen on
--port=9669

nebula-storaged.conf

########## networking ##########
# Comma separated Meta server addresses
--meta_server_addrs=192.168.10.111:9559,192.168.10.112:9559,192.168.10.113:9559
# Local IP used to identify the nebula-storaged process.
# Change it to an address other than loopback if the service is distributed or
# will be accessed remotely.
--local_ip=192.168.10.112
# Storage daemon listening port
--port=9779

nebula-metad.conf

########## networking ##########
# Comma separated Meta Server addresses
--meta_server_addrs=192.168.10.111:9559,192.168.10.112:9559,192.168.10.113:9559
# Local IP used to identify the nebula-metad process.
# Change it to an address other than loopback if the service is distributed or
# will be accessed remotely.
--local_ip=192.168.10.112
# Meta daemon listening port
--port=9559

机器 C 配置

nebula-graphd.conf

########## networking ##########
# Comma separated Meta Server Addresses
--meta_server_addrs=192.168.10.111:9559,192.168.10.112:9559,192.168.10.113:9559
# Local IP used to identify the nebula-graphd process.
# Change it to an address other than loopback if the service is distributed or
# will be accessed remotely.
--local_ip=192.168.10.113
# Network device to listen on
--listen_netdev=any
# Port to listen on
--port=9669

nebula-storaged.conf

########## networking ##########
# Comma separated Meta server addresses
--meta_server_addrs=192.168.10.111:9559,192.168.10.112:9559,192.168.10.113:9559
# Local IP used to identify the nebula-storaged process.
# Change it to an address other than loopback if the service is distributed or
# will be accessed remotely.
--local_ip=192.168.10.113
# Storage daemon listening port
--port=9779

nebula-metad.conf

########## networking ##########
# Comma separated Meta Server addresses
--meta_server_addrs=192.168.10.111:9559,192.168.10.112:9559,192.168.10.113:9559
# Local IP used to identify the nebula-metad process.
# Change it to an address other than loopback if the service is distributed or
# will be accessed remotely.
--local_ip=192.168.10.113
# Meta daemon listening port
--port=9559

机器 D 配置

nebula-graphd.conf

########## networking ##########
# Comma separated Meta Server Addresses
--meta_server_addrs=192.168.10.111:9559,192.168.10.112:9559,192.168.10.113:9559
# Local IP used to identify the nebula-graphd process.
# Change it to an address other than loopback if the service is distributed or
# will be accessed remotely.
--local_ip=192.168.10.114
# Network device to listen on
--listen_netdev=any
# Port to listen on
--port=9669

nebula-storaged.conf

########## networking ##########
# Comma separated Meta server addresses
--meta_server_addrs=192.168.10.111:9559,192.168.10.112:9559,192.168.10.113:9559
# Local IP used to identify the nebula-storaged process.
# Change it to an address other than loopback if the service is distributed or
# will be accessed remotely.
--local_ip=192.168.10.114
# Storage daemon listening port
--port=9779

机器 E 配置

nebula-graphd.conf

########## networking ##########
# Comma separated Meta Server Addresses
--meta_server_addrs=192.168.10.111:9559,192.168.10.112:9559,192.168.10.113:9559
# Local IP used to identify the nebula-graphd process.
# Change it to an address other than loopback if the service is distributed or
# will be accessed remotely.
--local_ip=192.168.10.115
# Network device to listen on
--listen_netdev=any
# Port to listen on
--port=9669

nebula-storaged.conf

########## networking ##########
# Comma separated Meta server addresses
--meta_server_addrs=192.168.10.111:9559,192.168.10.112:9559,192.168.10.113:9559
# Local IP used to identify the nebula-storaged process.
# Change it to an address other than loopback if the service is distributed or
# will be accessed remotely.
--local_ip=192.168.10.115
# Storage daemon listening port
--port=9779

3. 启动集群¶

依次启动各个服务器上的对应进程。

机器名称	待启动的进程
A	graphd、storaged、metad
B	graphd、storaged、metad
C	graphd、storaged、metad
D	graphd、storaged
E	graphd、storaged

启动 Nebula Graph 进程的命令如下：

sudo /usr/local/nebula/scripts/nebula.service start <metad|graphd|storaged|all>

Note

确保每个服务器中的对应进程都已启动，否则服务将启动失败。

当需都启动 graphd、storaged 和 metad 时，可以用 all 代替。

/usr/local/nebula是 Nebula Graph 的默认安装路径，如果修改过安装路径，请使用实际路径。更多启停服务的内容，请参见管理 Nebula Graph 服务。

4. 检查集群¶

安装原生 CLI 客户端 Nebula Console，然后连接任何一个已启动 graphd 进程的机器，添加 Storage 主机，然后执行命令SHOW HOSTS检查集群状态。例如：

$ ./nebula-console --addr 192.168.10.111 --port 9669 -u root -p nebula

2021/05/25 01:41:19 [INFO] connection pool is initialized successfully
Welcome to Nebula Graph!

> ADD HOSTS 192.168.10.111:9779, 192.168.10.112:9779, 192.168.10.113:9779, 192.168.10.114:9779, 192.168.10.115:9779;
> SHOW HOSTS;
+------------------+------+----------+--------------+----------------------+------------------------+---------+
| Host             | Port | Status   | Leader count | Leader distribution  | Partition distribution | Version |
+------------------+------+----------+--------------+----------------------+------------------------+---------+
| "192.168.10.111" | 9779 | "ONLINE" | 0            | "No valid partition" | "No valid partition"   | "3.0.1" |
| "192.168.10.112" | 9779 | "ONLINE" | 0            | "No valid partition" | "No valid partition"   | "3.0.1" |
| "192.168.10.113" | 9779 | "ONLINE" | 0            | "No valid partition" | "No valid partition"   | "3.0.1" |
| "192.168.10.114" | 9779 | "ONLINE" | 0            | "No valid partition" | "No valid partition"   | "3.0.1" |
| "192.168.10.115" | 9779 | "ONLINE" | 0            | "No valid partition" | "No valid partition"   | "3.0.1" |
+------------------+------+----------+--------------+----------------------+------------------------+---------+

最后更新: March 7, 2023