Grazie mille per la correzione, mi vado a documentare sull'except "senza niente" che sembra una cosa mal fatta :(
2015-10-06 14:29 GMT+02:00 Marco De Paoli <depao...@gmail.com>: > ciao Remo, > > 2015-10-06 12:40 GMT+02:00 Remo Cosini <redmine....@gmail.com>: > >> Salve a tutti, >> sono nuovo di python e finora sono riuscito a cavarmela da autodidatta. >> Ho trovato uno script (che fa uso di paramiko) e l'ho modificato secondo >> mie esigenze. Avevo necessità di testare degli accessi SSH (con user e pwd >> già cablata) partendo da un array e mettendo >> il tutto dentro un ciclo, ma sembra non andare, l'errore che leggo è il >> seguente: >> >> Could not SSH to ['localhost', '127.0.0.1'], waiting for it to start >> Could not connect to ['localhost', '127.0.0.1']. Giving up >> >> Sembra non prendere i valori host uno per volta, ma tutti insieme, ecco >> lo script: >> >> import sys >> import time >> import select >> import paramiko >> i = 1 >> host = ['localhost', '127.0.0.1', '192.168.2.2'] >> for item in host: >> > > da questo momento in poi dovresti usare "item" e non "host" > > while True: >> print 'Trying to connect to %s (%i/3)' % (host, i) >> try: >> ssh = paramiko.SSHClient() >> >> ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) >> ssh.connect(host, port=22, username='centos', >> password='reverse') >> > > qui usi "host", ma dovevi usare "item" > > >> print "Connected to %s" % host >> break >> except paramiko.AuthenticationException: >> print "Authentication failed when connecting to >> %s" % host >> sys.exit(1) >> except: >> > > ti consiglio di evitare l'except "senza niente" > https://realpython.com/blog/python/the-most-diabolical-python-antipattern/ > > >> print "Could not SSH to %s, waiting for it to >> start" % host >> i += 1 >> time.sleep(2) >> # If we could not connect within time limit >> if i == 3: >> print "Could not connect to %s. Giving up" % host >> sys.exit(1) >> # Send the command (non-blocking) >> stdin, stdout, stderr = ssh.exec_command("uname") >> # Wait for the command to terminate >> while not stdout.channel.exit_status_ready(): >> # Only print data if there is data to read in the channel >> if stdout.channel.recv_ready(): >> rl, wl, xl = select.select([stdout.channel], [], >> [], 0.0) >> if len(rl) > 0: >> # Print data from stdout >> print '-------------------------------' >> print stdout.channel.recv(1024), >> # Send the command (non-blocking) >> stdin, stdout, stderr = ssh.exec_command("hostname") >> # Wait for the command to terminate >> while not stdout.channel.exit_status_ready(): >> # Only print data if there is data to read in the channel >> if stdout.channel.recv_ready(): >> rl, wl, xl = select.select([stdout.channel], [], >> [], 0.0) >> if len(rl) > 0: >> # Print data from stdout >> print stdout.channel.recv(1024), >> # Send the command (non-blocking) >> stdin, stdout, stderr = ssh.exec_command("hostname -I") >> # Wait for the command to terminate >> while not stdout.channel.exit_status_ready(): >> # Only print data if there is data to read in the channel >> if stdout.channel.recv_ready(): >> rl, wl, xl = select.select([stdout.channel], [], >> [], 0.0) >> if len(rl) > 0: >> # Print data from stdout >> print stdout.channel.recv(1024), >> print '-------------------------------' >> # >> # Disconnect from the host >> # >> print "Command done, closing SSH connection." >> ssh.close() >> >> Qualcuno mi illumina? >> > > ciao, > Marco > > > _______________________________________________ > Python mailing list > Python@lists.python.it > http://lists.python.it/mailman/listinfo/python > >
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