rt_raster_to_gdal: Could not load the output GDAL driver

问题记录：
postgis 安装后不能执行以下语句，查询入库的 tif 文件

SELECT ST_AsGDALRaster(rast, 'GTiff') As rastjpg FROM radar_data_xx WHERE rid=1;

解决办法：

1.  确认是否安装 GDAL ，否则安装GDAL  https://www.cnblogs.com/luochunxi/p/16981351.html

apt-get install gdal-bin
ogrinfo --version
apt-get install libgdal-dev
gdal-config --version

2. 添加环境变量，让 postgis 能找到  https://www.osgeo.cn/postgis-manual/postgis_administration.html#raster_configuration

vim /etc/profile
# 添加变量
POSTGIS_ENABLE_OUTDB_RASTERS=1
POSTGIS_GDAL_ENABLED_DRIVERS=ENABLE_ALL
GDAL_DATA=/usr/share/gdal

source /etc/profile

如果是容器的话，从新在进入后环境变量没了 https://blog.csdn.net/tianyi520jx/article/details/127112668
vim  /root/.bashrc
# 添加
source /etc/profile

source /root/.bashrc

3 如还是不行，重新启动容器，在命令上添加环境变量

docker run -t --name postgisxx --restart always -e POSTGIS_GDAL_ENABLED_DRIVERS='ENABLE_ALL' -e  POSTGIS_ENABLE_OUTDB_RASTERS=1 -e GDAL_DATA='/usr/share/gdal' -e POSTGRES_USER='nb_db' -e POSTGRES_PASSWORD='htht@2022' -e ALLOW_IP_RANGE=0.0.0.0/0 -p 8431:5432 -v /home/postgisxx:/var/lib/postgresql/data -d postgisxx1:latest