将 chirpstack-gateway-bridge 部署到网关
## 下载
根据网关选择，这里下载 ARMv7 指令集的二进制程序
https://artifacts.chirpstack.io/downloads/chirpstack-gateway-bridge/chirpstack-gateway-bridge_3.14.3_linux_armv7.tar.gz
## 配置
从 Ubuntu 服务器中找到 apt 安装时自动创建的配置文件。
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### 基本配置
```
# Gateway backend configuration.
# Backend type.
type="semtech_udp"
# Semtech UDP packet-forwarder backend.
# ip:port to bind the UDP listener to
#
# Example: 0.0.0.0:1700 to listen on port 1700 for all network interfaces.
# This is the listener to which the packet-forwarder forwards its data
# so make sure the 'serv_port_up' and 'serv_port_down' from your
# packet-forwarder matches this port.
udp_bind = "0.0.0.0:1700"
# Integration configuration.
# Payload marshaler.
#
# This defines how the MQTT payloads are encoded. Valid options are:
# * protobuf:Protobuf encoding
# * json: JSON encoding (easier for debugging, but less compact than 'protobuf')
marshaler="protobuf"
# MQTT integration configuration.
# Event topic template.
event_topic_template="gateway/{{ .GatewayID }}/event/{{ .EventType }}"
# Command topic template.
command_topic_template="gateway/{{ .GatewayID }}/command/#"
# MQTT authentication.
# Type defines the MQTT authentication type to use.
#
# Set this to the name of one of the sections below.
type="generic"
# Generic MQTT authentication.
# MQTT server (e.g. scheme://host:port where scheme is tcp, ssl or ws)
server="tcp://183.171.15.181:1883"
# Connect with the given username (optional)
username=""
# Connect with the given password (optional)
password=""
```
### 日志配置
```
# debug=5, info=4, warning=3, error=2, fatal=1, panic=0
log_level=4
# Log to syslog.
#
# When set to true, log messages are being written to syslog.
log_to_syslog=true
```
查看日志方法：
```
logread -f -e chirpstack
```
## 安装
### 安装脚本
```sh
#!/bin/sh
if [ -f /etc/init.d/lora-bridge ]
then
/etc/init.d/lora-bridge stop
/etc/init.d/lora-bridge disable
fi
cp chirpstack-gateway-bridge /usr/sbin/
chmod +rx /usr/sbin/chirpstack-gateway-bridge
cp lora-bridge /etc/init.d/
chmod +rx /etc/init.d/lora-bridge
mkdir -p /etc/chirpstack-gateway-bridge
cp chirpstack-gateway-bridge.toml /etc/chirpstack-gateway-bridge/
chmod +r /etc/chirpstack-gateway-bridge/chirpstack-gateway-bridge.toml
/etc/init.d/lora-bridge enable
/etc/init.d/lora-bridge start
```
### 服务脚本
**注意，以下代码无效（仅做记录）：**
```sh
#!/bin/sh /etc/rc.common
START=98
STOP=1
start()
{
echo service chirpstack-gateway-bridge start
/usr/sbin/chirpstack-gateway-bridge &
}
stop()
{
echo service chirpstack-gateway-bridge stop
bridge_pid=$( ps -w | grep chirpstack-gateway-bridge | grep -v grep | awk '{print $1}' 2>/dev/null )
if [ -n "$bridge_pid" ];then
kill $bridge_pid > /dev/null 2>&1
fi
}
```
使用前边的 start()、stop() 的形式创建的服务只能手动启动运行，不能启动时自动运行，查了很久没弄明白。而网关中的其他一些服务比如 lora 就可以正常自启动，不知是否与目标程序有关。
以下代码可用：
```
#!/bin/sh /etc/rc.common
START=98
STOP=1
USE_PROCD=1
PROG=/usr/sbin/chirpstack-gateway-bridge
start_service () {
echo service chirpstack-gateway-bridge start
procd_open_instance
procd_set_param command "$PROG"
procd_close_instance
}
stop_service() {
echo service chirpstack-gateway-bridge stop
}
```
## 配置网关
通常在网关的 WebUI 上将 lora 的 server address 改为 localhost 即可。
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