Revision 82122173 lib/ssh.py
b/lib/ssh.py | ||
---|---|---|
29 | 29 |
from ganeti import logger |
30 | 30 |
from ganeti import utils |
31 | 31 |
from ganeti import errors |
32 |
from ganeti import constants |
|
33 |
|
|
34 |
|
|
35 |
__all__ = ["SSHCall", "CopyFileToNode", "VerifyNodeHostname", |
|
36 |
"KNOWN_HOSTS_OPTS", "BATCH_MODE_OPTS", "ASK_KEY_OPTS"] |
|
37 |
|
|
38 |
|
|
39 |
KNOWN_HOSTS_OPTS = [ |
|
40 |
"-oGlobalKnownHostsFile=%s" % constants.SSH_KNOWN_HOSTS_FILE, |
|
41 |
"-oUserKnownHostsFile=/dev/null", |
|
42 |
] |
|
43 |
|
|
44 |
# Note: BATCH_MODE conflicts with ASK_KEY |
|
45 |
BATCH_MODE_OPTS = [ |
|
46 |
"-oEscapeChar=none", |
|
47 |
"-oBatchMode=yes", |
|
48 |
"-oStrictHostKeyChecking=yes", |
|
49 |
] |
|
50 |
|
|
51 |
ASK_KEY_OPTS = [ |
|
52 |
"-oStrictHostKeyChecking=ask", |
|
53 |
"-oEscapeChar=none", |
|
54 |
"-oHashKnownHosts=no", |
|
55 |
] |
|
56 |
|
|
32 | 57 |
|
33 | 58 |
def SSHCall(hostname, user, command, batch=True, ask_key=False): |
34 | 59 |
"""Execute a command on a remote node. |
... | ... | |
40 | 65 |
hostname: the target host, string |
41 | 66 |
user: user to auth as |
42 | 67 |
command: the command |
68 |
batch: if true, ssh will run in batch mode with no prompting |
|
69 |
ask_key: if true, ssh will run with StrictHostKeyChecking=ask, so that |
|
70 |
we can connect to an unknown host (not valid in batch mode) |
|
43 | 71 |
|
44 | 72 |
Returns: |
45 | 73 |
`utils.RunResult` as for `utils.RunCmd()` |
46 | 74 |
|
47 | 75 |
""" |
48 |
argv = ["ssh", "-q", "-oEscapeChar=none"] |
|
76 |
argv = ["ssh", "-q"] |
|
77 |
argv.extend(KNOWN_HOSTS_OPTS) |
|
49 | 78 |
if batch: |
50 |
argv.append("-oBatchMode=yes") |
|
51 | 79 |
# if we are in batch mode, we can't ask the key |
52 | 80 |
if ask_key: |
53 | 81 |
raise errors.ProgrammerError("SSH call requested conflicting options") |
54 |
if ask_key: |
|
55 |
argv.append("-oStrictHostKeyChecking=ask") |
|
56 |
argv.append("-oHashKnownHosts=no") |
|
57 |
else: |
|
58 |
argv.append("-oStrictHostKeyChecking=yes") |
|
82 |
argv.extend(BATCH_MODE_OPTS) |
|
83 |
elif ask_key: |
|
84 |
argv.extend(ASK_KEY_OPTS) |
|
59 | 85 |
argv.extend(["%s@%s" % (user, hostname), command]) |
60 | 86 |
return utils.RunCmd(argv) |
61 | 87 |
|
... | ... | |
79 | 105 |
logger.Error("file %s must be an absolute path" % (filename)) |
80 | 106 |
return False |
81 | 107 |
|
82 |
command = ["scp", "-q", "-p", "-oStrictHostKeyChecking=yes", |
|
83 |
"-oBatchMode=yes", filename, "%s:%s" % (node, filename)] |
|
108 |
command = ["scp", "-q", "-p"] |
|
109 |
command.extend(KNOWN_HOSTS_OPTS) |
|
110 |
command.extend(BATCH_MODE_OPTS) |
|
111 |
command.append(filename) |
|
112 |
command.append("%s:%s" % (node, filename)) |
|
84 | 113 |
|
85 | 114 |
result = utils.RunCmd(command) |
86 | 115 |
|
Also available in: Unified diff