每次尝试连接服务器时都会收到此错误。
BaseSSHTunnelForwarderError：无法建立与SSH网关的会话
def make_JSON_creds(filename="./.usercreds.json"):
"""Creates a JSON credentials file with name <filename>"""
# Get keys (without them showing up on screen)
print("Enter the following credentials:")
SSH_USERNAME = getpass("SSH USERNAME")
SSH_PRIVATE_KEY = getpass("SSH PASSWORD")
DB_USERNAME = getpass("DATABASE ACCESS USERNAME")
DB_PASSWORD = getpass("DATABASE ACCESS PASSWORD")
# Write to file. TODO: Encrypt this.
with open(filename, "w") as the_file:
json.dump({"SSH_USERNAME" : SSH_USERNAME, \
"SSH_PRIVATE_KEY" : SSH_PRIVATE_KEY, \
"DB_USERNAME" : DB_USERNAME, \
"DB_PASSWORD" : DB_PASSWORD}, the_file)
def get_JSON_creds(filename="./.usercreds.json", ask=True):
"""Loads JSON credentials from a credentials file.
Creates the file if it doesn't exist.
Returns an OAuth1 header object.
"""
# Make the file if it isn't there. Or if you just want to.
if ask or not os.path.isfile(filename): # Note: This is technically unsafe
make_JSON_creds(filename)
# Then it's there. Get it.
with open(filename, "r") as the_file:
creds = json.load(the_file)
return(creds)
#SSH tunnelling with port forwarding to database server
def query(q):
with SSHTunnelForwarder(
(host, 22),
ssh_username=ssh_username,
ssh_password=ssh_private_key,
remote_bind_address=(localhost, 3306),
) as server:
conn = db.connect(host=localhost,
port=server.local_bind_port,
user=user,
passwd=password,
db=database)
return pd.read_sql_query(q, conn)
creds = get_JSON_creds(filename="./.usercreds_tide.json", ask=True)
# ssh variables
host = 'Hostname'
localhost = '127.0.0.1'
ssh_username = creds.get("SSH_USERNAME").strip()
ssh_private_key = creds.get("SSH_PRIVATE_KEY").strip()
# database variables
user=creds.get("DB_USERNAME").strip()
password=creds.get("DB_PASSWORD").strip()
database='tidal'
df = query("SELECT comm.Art,comm.Text,COUNT(comm.Text),
comm.Info,commurl.Title,commurl.Source FROM comm INNER JOIN commurl ON
comm.Id=commurl.ID GROUP BY Id HAVING COUNT(comm.Text)>100")
错误是：
BaseSSHTunnelForwarderError跟踪（最近一次通话）