几天前完成yum升级后，我的Django项目出现以下错误
Traceback (most recent call last):
File "manage.py", line 21, in <module>
main()
File "manage.py", line 17, in main
execute_from_command_line(sys.argv)
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/core/management/__init__.py", line 357, in execute
django.setup()
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/apps/registry.py", line 114, in populate
app_config.import_models()
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/apps/config.py", line 211, in import_models
self.models_module = import_module(models_module_name)
File "/home/joincic/GeoRouting/GeoRouting_2/lib64/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/auth/models.py", line 2, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/auth/base_user.py", line 47, in <module>
class AbstractBaseUser(models.Model):
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/db/models/base.py", line 117, in __new__
new_class.add_to_class('_meta', Options(meta, app_label))
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/db/models/base.py", line 321, in add_to_class
value.contribute_to_class(cls, name)
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/db/models/options.py", line 204, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/db/__init__.py", line 28, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/db/utils.py", line 201, in __getitem__
backend = load_backend(db['ENGINE'])
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/db/utils.py", line 110, in load_backend
return import_module('%s.base' % backend_name)
File "/home/joincic/GeoRouting/GeoRouting_2/lib64/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/gis/db/backends/postgis/base.py", line 6, in <module>
from .features import DatabaseFeatures
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/gis/db/backends/postgis/features.py", line 1, in <module>
from django.contrib.gis.db.backends.base.features import BaseSpatialFeatures
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/gis/db/backends/base/features.py", line 3, in <module>
from django.contrib.gis.db.models import aggregates
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/gis/db/models/__init__.py", line 3, in <module>
import django.contrib.gis.db.models.functions # NOQA
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/gis/db/models/functions.py", line 4, in <module>
from django.contrib.gis.db.models.fields import BaseSpatialField, GeometryField
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/gis/db/models/fields.py", line 3, in <module>
from django.contrib.gis import forms, gdal
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/gis/forms/__init__.py", line 3, in <module>
from .fields import ( # NOQA
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/gis/forms/fields.py", line 2, in <module>
from django.contrib.gis.gdal import GDALException
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/gis/gdal/__init__.py", line 28, in <module>
from django.contrib.gis.gdal.datasource import DataSource
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/gis/gdal/datasource.py", line 39, in <module>
from django.contrib.gis.gdal.driver import Driver
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/gis/gdal/driver.py", line 5, in <module>
from django.contrib.gis.gdal.prototypes import ds as vcapi, raster as rcapi
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/gis/gdal/prototypes/ds.py", line 9, in <module>
from django.contrib.gis.gdal.libgdal import GDAL_VERSION, lgdal
File "/home/joincic/GeoRouting/GeoRouting_2/lib/python3.6/site-packages/django/contrib/gis/gdal/libgdal.py", line 47, in <module>
lgdal = CDLL(lib_path)
File "/usr/lib64/python3.6/ctypes/__init__.py", line 343, in __init__
self._handle = _dlopen(self._name, mode)
OSError: /usr/gdal30/lib/libgdal.so.26: undefined symbol: GEOSMakeValid_r
升级前该项目正常运行，并尝试修复我安装了gdal 3.0.2的错误，但它不起作用
我不知道您是否需要有关该项目或虚拟机的更多信息，可以询问我，我很乐意为您提供任何信息
任何想法？
对于我来说，yum具有多个已启用的pgdg存储库，而gdal lib是从与Postgis不同的pg版本安装的。在将启用的pgdg存储库减少到一个（感兴趣的版本）并重新安装（或更好地擦除并安装）受影响的软件包后，我又可以将pg与Postgis一起使用。
如何禁用存储库，请参阅How to enable or disable repositories in CentOS。在我的情况下，相关文件是/ etc / yum.repos.d / pgdg-redhat-all.repo
在升级之前已经存在混合存储库的情况，并且Postgis正常工作没有麻烦
[test@mytest ~]$ yum list installed | grep -i geos
geos37.x86_64 3.7.2-2.rhel7 @pgdg10
[test@mytest ~]$ yum list installed | grep -i gdal
gdal-libs.x86_64 1.11.4-12.rhel7 @pgdg96
gdal30-libs.x86_64 3.0.1-4.rhel7 @pgdg10
[test@mytest ~]$ yum list installed | grep -i postgis
postgis24_96.x86_64 2.4.8-5.rhel7 @pgdg96
postgis24_96-client.x86_64 2.4.8-5.rhel7 @pgdg96
[test@mytest ~]$ yum repolist enabled | grep -i Postgre
pgdg10/7/x86_64 PostgreSQL 10 for RHEL/CentOS 7 - x86_64 1,306
pgdg11/7/x86_64 PostgreSQL 11 for RHEL/CentOS 7 - x86_64 1,162
pgdg12/7/x86_64 PostgreSQL 12 for RHEL/CentOS 7 - x86_64 596
pgdg96/7/x86_64 PostgreSQL 9.6 for RHEL/CentOS 7 - x86_64 1,354
[test@mytest ~]$ psql
psql (9.6.15)
postgres=# CREATE DATABASE test;
CREATE DATABASE
postgres=# \connect test
You are now connected to database "test" as user "test".
test=# CREATE EXTENSION postgis;
CREATE EXTENSION
test=# \connect postgres
You are now connected to database "postgres" as user "test".
postgres=# DROP DATABASE test;
DROP DATABASE
<< yum更新后>>混合存储库的情况有所扩展，postgis造成了麻烦。 （grep搜索pgdg以检测所有受影响的软件包）[test@mytest ~]$ yum list installed | grep -i pgdg
CGAL.x86_64 4.7-1.rhel7.1 @pgdg11
SFCGAL.x86_64 1.3.1-2.rhel7 @pgdg12
SFCGAL-libs.x86_64 1.3.1-2.rhel7 @pgdg12
gdal-libs.x86_64 1.11.4-12.rhel7 @pgdg96
gdal30-libs.x86_64 3.0.1-4.rhel7 @pgdg10
geos37.x86_64 3.7.2-2.rhel7 @pgdg10
libgeotiff.x86_64 1.4.0-1.rhel7.1 @pgdg11
libgeotiff15.x86_64 1.5.1-2.rhel7 @pgdg12
ogdi.x86_64 3.2.0-4.rhel7.1 @pgdg11
ogdi41.x86_64 4.1.0-2.rhel7 @pgdg10
pgdg-redhat-repo.noarch 42.0-5 @pgdg10
postgis24_96.x86_64 2.4.8-5.rhel7 @pgdg96
...
proj62.x86_64 6.2.0-1.rhel7 @pgdg10
[test@mytest ~]$ psql
...
test=# CREATE EXTENSION postgis;
ERROR: could not load library "/usr/pgsql-9.6/lib/rtpostgis-2.4.so": /usr/gdal30/lib/libgdal.so.26: undefined symbol: GEOSMakeValid_r
test=#
我试图仅启用一个pgpdg存储库来重新安装Postgis。这不是重新安装相关的geos，gdal，proj软件包。因此，我删除了所有受影响的软件包并重新安装。
[test@mytest ~]$ sudo yum erase CGAL geos37 proj62 proj49 ogdi41
[test@mytest ~]$ sudo yum install postgis24_96
[test@mytest ~]$ yum list installed | grep -i pgdg
CGAL.x86_64 4.7-1.rhel7 @pgdg96
SFCGAL.x86_64 1.3.1-1.rhel7 @pgdg96
SFCGAL-libs.x86_64 1.3.1-1.rhel7 @pgdg96
gdal30-libs.x86_64 3.0.4-2.rhel7 @pgdg96
geos38.x86_64 3.8.0-1.rhel7 @pgdg96
...
postgis24_96.x86_64 2.4.8-8.rhel7 @pgdg96
这是一项艰巨的系统更改，请确保具有备份（例如VM快照）。还要检查是否依赖的其他安装（例如python正常安装）仍然可以与更改的库一起使用或需要重新安装。