Setup local db2 server for password less access from python - python

I want to setup a local db2 database to allow local users to connect without using password (specifically via python).
I can connect to the database from cli w/o password as db2 connect to <DATABASE>.
However, when trying to connect from within python using official ibm_db api as
ibm_db.connect("database", "", "")
throws the following error:
SQL 300082N Security processing failed with reason "17" ("UNSUPPORTED FUNCTION"). SQLSTATE=08001 SQLCODE=-30082
Based on the documentation for authentication options, I have set the following options:
AUTHENTICATION=CLIENT
TRUST_CLNTAUTH=CLIENT
TRUST_ALLCLNTS=YES
however, I am still getting the same error.
P.S. #1: I am not concerned about user authentication as they have already been authenticated before been allowed to log in to the server.
P.S. #2: A similar question has already been asked at DB2 connection without specifying username and password. However, I need to connect via python and even with the setting 1 and 3 prescribed in the accepted answer, the connection fails.
P.S. #3: Possibly relevant link - http://www-01.ibm.com/support/docview.wss?uid=swg21237107

Related

connection times out when trying to connect to mongodb atlas with python

I'm trying to connect to my mongodb atlas cluster but i keep getting timed out as soon as i try to do something with my db.
The db i use was created in mongoshell and also the collection i checked their existence in mongodb compass
ERROR
pymongo.errors.ServerSelectionTimeoutError: projekt-shard-00-01-rk7ft.mongodb.net:27017: timed out,projekt-shard-00-00-rk7ft.mongodb.net:27017: timed out,projekt-shard-00-02-rk7ft.mongodb.net:27017: timed out
CODE
client = MongoClient("""mongodb://user:password#projekt-shard-00-00-rk7ft.mongodb.net:27017,projekt-shard-00-01-rk7ft.mongodb.net:27017,projekt-shard-00-02-rk7ft.mongodb.net:27017/projekt?ssl=true&replicaSet=projekt-shard-0&authSource=admin""")
client.projekt.category.insert_one({type : "pants"}).inserted_id
SO the problem is with your IP Address,
GO to the Network Access panel in MongoDB Atlas
In the IP Access List section, you will find all your IP addresses
Click on edit tab for the current IP address you are using
There change the setting to ALLOW ACCESS FROM ANYWHERE
That's it, it will work!
I was having this issue for hours. It's odd that it seems to be a connection issue, but it's not throwing a bad auth or anything, just this timeout. The client object seems to be actually created (I could print its properties). I kept playing around and this somehow worked:
In the MongoDB GUI, navigate to Database Access
Add a test user with the same read/write permissions to everything as the initial user created upon setup
Change the connection string in Python to the new user's username + password
Run the code
For me it finally connected and inserted successfully. After this, the original user's connection string now worked, so I deleted the test user.
I can't identify the root cause of this issue, but it seems like the Database Users table just needed some kind of action performed on it to refresh and begin accepting user connections.
Anybody looking for a solution, if you are trying to access Atlas instance from out in the wild, check the "Network Access" tab, as i think you have to whitelist either all, or specific IP addresses

Is there a way to set secure_auth to false in MySQLdb.connect in Python 2.7.5?

I am attempting to run a script written in Python 2.7.5 (not using Django). When it tries to connect to a remote mysql server with the MySQLdb.connect() method it throws the following error:
_mysql_exceptions.OperationalError: (2049, "Connection using old (pre-4.1.1) authentication protocol refused (client option 'secure_auth' enabled)")
I have done reading about this issue:
Django/MySQL-python - Connection using old (pre-4.1.1) authentication protocol refused (client option 'secure_auth' enabled)
mysql error 2049 connection using old (pre-4-1-1) authentication from mac
Is there a way to set a parameter in the MySQLdb.connect() method to set secure_auth to false? Without having to change any passwords or running the command from the cmd line. I have looked at the official docs and there does not appear to be anything in there.
I have tried adding secure_auth=False to the parameters but throws an error (shown in the code below).
Python:
def get_cursor():
global _cursor
if _cursor is None:
try:
db = MySQLdb.connect(user=_usr, passwd=_pw, host='external.website.com', port=3306, db=_usr, charset="utf8")
# tried this but it doesnt work (as expect but tried anyway) which throws this error
# TypeError: 'secure_auth' is an invalid keyword argument for this function
# db = MySQLdb.connect(user=_usr, passwd=_pw, host='external.website.com', port=3306, db=_usr, charset="utf8", secure_auth=false)
_cursor = db.cursor()
except MySQLdb.OperationalError:
print "error connecting"
raise
return _cursor
I spent an inordinate amount of time working through the MySQLdb source code and determined that this simply cannot be done without patching the MySQLdb's C wrapping code. Theoretically, you should be able to pass the SECURE_CONNECTION flag to specify that do not want to use the insecure old passwords:
MySQLdb.connect(..., client_flags=MySQLdb.constant.CLIENT.SECURE_CONNECTION)
But the MySQLdb code never actually checks that flag, and never configures the secure_connection option when calling the MySQL connection code, so it always defaults to requiring new-style passwords.
Possible fixes include:
Patch the MySQLdb code
Use an old version of the MySQL client libraries
Update the passwords on the MySQL server
Create a single new user with a new-style password
Sorry I don't have a better answer. I just ran into this problem myself!
I know Moses answer as been validated but I wanted to offer my work around based on what he suggested.
I had previously installed mysql_python for my python and had the brew version of mysql installed.
I deteleted all of that.
I look for a way to install MySQLdb by looking for it last stable version with the source.
I compiled them (followed the isntructions here), installed them and then I looked for a stable version of MySQL client (MySQL website is the best place for that) and install the 5.5 version which was perfectly fitting my requirements.
I made mysql to launch itself automatically and then restarted my computer (but you can just restart apache) and check that all path were correct and the right includes are in the right places (you can check that against the link above).
And now it all works fine!
Hope it helps.
SSL is a separate paramter that you can set in the connection paramter...Here is a note from the source code...Try checking mysql_ssl_set() documentation.
ssl
dictionary or mapping, contains SSL connection parameters;
see the MySQL documentation for more details
(mysql_ssl_set()). If this is set, and the client does not
support SSL, NotSupportedError will be raised.
This document talks about all the secure parameters - http://dev.mysql.com/doc/refman/5.0/en/mysql-ssl-set.html...
I don't see anything to disable secure auth in glance..

Connect to SQL Server instance using pymssql

I'm attempting to connect to a SQL Server instance from a Windows box using pymssql (version 2.0.0b1-dev-20111019 with Python 2.7.1). I've tried the most basic approach from the console:
import pymssql
c = pymssql.connect(host = r'servername\instance',
user = 'username',
password = 'userpassword')
In response to this, I get the very helpful error: InterfaceError: Connection to the database failed for an unknown reason.
I am reasonably confident that the connection information is correct, as it works when I use adodbapi, with the following commands:
import adodbapi
c = adodbapi.connect(r'Provider=sqloledb;Data Source=servername\instance;User ID=username;password=userpassword;'
c.close
I've tried adding the port number to the host parameter, with the same result. Does anyone have a suggestion on how to go about resolving this issue?
Incidentally, I've read the responses at "Unable to connect to SQL Server via pymssql". The OP eventually resolved his issue by correctly configuring FreeTDS, which, from what I can tell, is not used by pymssql on Windows.
Based on #cha0site's recommendation, I have tried using just the hostname, rather than the hostname and instance. This resulted in the same error, but it seemed to take longer to generate the error (though the traceback still indicates the same line). The reason I have been specifying the instance is that I was not able to connect using SSMS unless I specified the instance, so I assumed that it would be necessary for other connections.
I've now also tried pymssql.connect(host='servername', user='username', password='userpassword', database='instance') with the same result (based on #Sid's comment). Based on the pymssql documentation, I believe the database parameter is used to specify the initial database that the user is to be connected to, rather than the instance.
Just to clarify, "instance" is the name provided during installation of SQL Server, not a database within that installation. It occurs to me that it's possible that pymssql does not support this notation, so I will look into re-configuring the SQL Server instance so that it is not required.
I've now re-installed SQL Server as a default instance, rather than a named instance, which allows me to connect without specifying the instance name. adodbapi still works (without /instance), but pymssql still returns the same error. I've also removed and re-installed pymssql from a freshly downloaded archive (still the same version).
Check your freetds.conf file and see if you have set the port 1219., then check again the connexion:
DB = pymssql.connect(host='DB',user='youruser',password='yourpwd',database='yourDBname')
Edit: example of my freetds.conf file Python:
host = 'IP'
port = 1219
To specify host=servername\instance or server=servername\instance, the SQL Server Browser service must be on the SQL Server machine.

Pymongo gives db assertion failure while trying to access remote server

I am getting the following error:
db assertion failure, assertion: 'unauthorized db:db1 lock type:-1 client:', assertionCode: 10057
I am able to access the MongoDB database by running python on the shell of my server. But when I try to access my site i get this unauthorised errors.
Any fix for this error?
This means that your database is using authentication. In such a setup, you must authenticate a valid user before you can perform any operations (queries, commands, updates, etc). You can do so with the db.auth(username, password) helper in the mongo shell (described in the MongoDB docs), and with Python, you can use the authenticate(username, password) method of the Database object (described in the PyMongo docs)

How to authenticate to a remote db host with MongoKit?

I am attempting to connect and authenticate to a remote database host (dotcloud, mongolabs, etc) using MongoKit within Flask. Connecting to the server seems to work fine. However I am unable to authenticate to the database. Presumably this should work:
from mongokit import Connection
connection = Connection(my_remote_host, my_remote_port)
connection.my_database.authenticate(my_admin_user, my_admin_password)
the call to authenticate() returns True, yet subsequent calls to fetch data throw:
OperationFailure: database error: unauthorized db
Anyone know what might be happening here?
This is likely due to the current behavior of authenticate() in pymongo. Pymongo doesn't cache authentication credentials between threads, so each thread must authenticate individually. See the note in the pymongo documentation about using authenticate() in a multi-threaded environment.

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