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1 | 05cd934d | René Nussbaumer | #!/usr/bin/python |
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2 | 05cd934d | René Nussbaumer | # |
3 | 05cd934d | René Nussbaumer | |
4 | 05cd934d | René Nussbaumer | # Copyright (C) 2010 Google Inc. |
5 | 05cd934d | René Nussbaumer | # |
6 | 05cd934d | René Nussbaumer | # This program is free software; you can redistribute it and/or modify |
7 | 05cd934d | René Nussbaumer | # it under the terms of the GNU General Public License as published by |
8 | 05cd934d | René Nussbaumer | # the Free Software Foundation; either version 2 of the License, or |
9 | 05cd934d | René Nussbaumer | # (at your option) any later version. |
10 | 05cd934d | René Nussbaumer | # |
11 | 05cd934d | René Nussbaumer | # This program is distributed in the hope that it will be useful, but |
12 | 05cd934d | René Nussbaumer | # WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | 05cd934d | René Nussbaumer | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | 05cd934d | René Nussbaumer | # General Public License for more details. |
15 | 05cd934d | René Nussbaumer | # |
16 | 05cd934d | René Nussbaumer | # You should have received a copy of the GNU General Public License |
17 | 05cd934d | René Nussbaumer | # along with this program; if not, write to the Free Software |
18 | 05cd934d | René Nussbaumer | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
19 | 05cd934d | René Nussbaumer | # 02110-1301, USA. |
20 | 05cd934d | René Nussbaumer | |
21 | 05cd934d | René Nussbaumer | """Tool to setup the SSH configuration on a remote node. |
22 | 05cd934d | René Nussbaumer | |
23 | 05cd934d | René Nussbaumer | This is needed before we can join the node into the cluster. |
24 | 05cd934d | René Nussbaumer | |
25 | 05cd934d | René Nussbaumer | """ |
26 | 05cd934d | René Nussbaumer | |
27 | c9a4a662 | Manuel Franceschini | # pylint: disable-msg=C0103 |
28 | c9a4a662 | Manuel Franceschini | # C0103: Invalid name setup-ssh |
29 | c9a4a662 | Manuel Franceschini | |
30 | 05cd934d | René Nussbaumer | import getpass |
31 | 05cd934d | René Nussbaumer | import logging |
32 | 05cd934d | René Nussbaumer | import paramiko |
33 | 05cd934d | René Nussbaumer | import os.path |
34 | 05cd934d | René Nussbaumer | import optparse |
35 | 05cd934d | René Nussbaumer | import sys |
36 | 05cd934d | René Nussbaumer | |
37 | 05cd934d | René Nussbaumer | from ganeti import cli |
38 | 05cd934d | René Nussbaumer | from ganeti import constants |
39 | 05cd934d | René Nussbaumer | from ganeti import errors |
40 | 05cd934d | René Nussbaumer | from ganeti import netutils |
41 | 05cd934d | René Nussbaumer | from ganeti import ssh |
42 | 05cd934d | René Nussbaumer | from ganeti import utils |
43 | 05cd934d | René Nussbaumer | |
44 | 05cd934d | René Nussbaumer | |
45 | 05cd934d | René Nussbaumer | class RemoteCommandError(errors.GenericError): |
46 | 05cd934d | René Nussbaumer | """Exception if remote command was not successful. |
47 | 05cd934d | René Nussbaumer | |
48 | 05cd934d | René Nussbaumer | """ |
49 | 05cd934d | René Nussbaumer | |
50 | 05cd934d | René Nussbaumer | |
51 | 05cd934d | René Nussbaumer | def _RunRemoteCommand(transport, command): |
52 | 05cd934d | René Nussbaumer | """Invokes and wait for the command over SSH. |
53 | 05cd934d | René Nussbaumer | |
54 | 05cd934d | René Nussbaumer | @param transport: The paramiko transport instance |
55 | 05cd934d | René Nussbaumer | @param command: The command to be executed |
56 | 05cd934d | René Nussbaumer | |
57 | 05cd934d | René Nussbaumer | """ |
58 | 05cd934d | René Nussbaumer | chan = transport.open_session() |
59 | 05cd934d | René Nussbaumer | chan.set_combine_stderr(True) |
60 | 05cd934d | René Nussbaumer | output_handler = chan.makefile("r") |
61 | 05cd934d | René Nussbaumer | chan.exec_command(command) |
62 | 05cd934d | René Nussbaumer | |
63 | 05cd934d | René Nussbaumer | result = chan.recv_exit_status() |
64 | 05cd934d | René Nussbaumer | msg = output_handler.read() |
65 | 05cd934d | René Nussbaumer | |
66 | 05cd934d | René Nussbaumer | out_msg = "'%s' exited with status code %s, output %r" % (command, result, |
67 | 05cd934d | René Nussbaumer | msg) |
68 | 05cd934d | René Nussbaumer | |
69 | 05cd934d | René Nussbaumer | # If result is -1 (no exit status provided) we assume it was not successful |
70 | 05cd934d | René Nussbaumer | if result: |
71 | 05cd934d | René Nussbaumer | raise RemoteCommandError(out_msg) |
72 | 05cd934d | René Nussbaumer | |
73 | 05cd934d | René Nussbaumer | if msg: |
74 | 05cd934d | René Nussbaumer | logging.info(out_msg) |
75 | 05cd934d | René Nussbaumer | |
76 | 05cd934d | René Nussbaumer | |
77 | 05cd934d | René Nussbaumer | def _InvokeDaemonUtil(transport, command): |
78 | 05cd934d | René Nussbaumer | """Invokes daemon-util on the remote side. |
79 | 05cd934d | René Nussbaumer | |
80 | 05cd934d | René Nussbaumer | @param transport: The paramiko transport instance |
81 | 05cd934d | René Nussbaumer | @param command: The daemon-util command to be run |
82 | 05cd934d | René Nussbaumer | |
83 | 05cd934d | René Nussbaumer | """ |
84 | 05cd934d | René Nussbaumer | _RunRemoteCommand(transport, "%s %s" % (constants.DAEMON_UTIL, command)) |
85 | 05cd934d | René Nussbaumer | |
86 | 05cd934d | René Nussbaumer | |
87 | 05cd934d | René Nussbaumer | def _WriteSftpFile(sftp, name, perm, data): |
88 | 05cd934d | René Nussbaumer | """SFTPs data to a remote file. |
89 | 05cd934d | René Nussbaumer | |
90 | 05cd934d | René Nussbaumer | @param sftp: A open paramiko SFTP client |
91 | 05cd934d | René Nussbaumer | @param name: The remote file name |
92 | 05cd934d | René Nussbaumer | @param perm: The remote file permission |
93 | 05cd934d | René Nussbaumer | @param data: The data to write |
94 | 05cd934d | René Nussbaumer | |
95 | 05cd934d | René Nussbaumer | """ |
96 | 05cd934d | René Nussbaumer | remote_file = sftp.open(name, "w") |
97 | 05cd934d | René Nussbaumer | try: |
98 | 05cd934d | René Nussbaumer | sftp.chmod(name, perm) |
99 | 05cd934d | René Nussbaumer | remote_file.write(data) |
100 | 05cd934d | René Nussbaumer | finally: |
101 | 05cd934d | René Nussbaumer | remote_file.close() |
102 | 05cd934d | René Nussbaumer | |
103 | 05cd934d | René Nussbaumer | |
104 | 05cd934d | René Nussbaumer | def SetupSSH(transport): |
105 | 05cd934d | René Nussbaumer | """Sets the SSH up on the other side. |
106 | 05cd934d | René Nussbaumer | |
107 | 05cd934d | René Nussbaumer | @param transport: The paramiko transport instance |
108 | 05cd934d | René Nussbaumer | |
109 | 05cd934d | René Nussbaumer | """ |
110 | 05cd934d | René Nussbaumer | priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS) |
111 | 05cd934d | René Nussbaumer | keyfiles = [ |
112 | 05cd934d | René Nussbaumer | (constants.SSH_HOST_DSA_PRIV, 0600), |
113 | 05cd934d | René Nussbaumer | (constants.SSH_HOST_DSA_PUB, 0644), |
114 | 05cd934d | René Nussbaumer | (constants.SSH_HOST_RSA_PRIV, 0600), |
115 | 05cd934d | René Nussbaumer | (constants.SSH_HOST_RSA_PUB, 0644), |
116 | 05cd934d | René Nussbaumer | (priv_key, 0600), |
117 | 05cd934d | René Nussbaumer | (pub_key, 0644), |
118 | 05cd934d | René Nussbaumer | ] |
119 | 05cd934d | René Nussbaumer | |
120 | 05cd934d | René Nussbaumer | sftp = transport.open_sftp_client() |
121 | 05cd934d | René Nussbaumer | |
122 | 05cd934d | René Nussbaumer | filemap = dict((name, (utils.ReadFile(name), perm)) |
123 | 05cd934d | René Nussbaumer | for (name, perm) in keyfiles) |
124 | 05cd934d | René Nussbaumer | |
125 | 05cd934d | René Nussbaumer | auth_path = os.path.dirname(auth_keys) |
126 | 05cd934d | René Nussbaumer | |
127 | 05cd934d | René Nussbaumer | try: |
128 | 05cd934d | René Nussbaumer | sftp.mkdir(auth_path, 0700) |
129 | 05cd934d | René Nussbaumer | except IOError: |
130 | 05cd934d | René Nussbaumer | # Sadly paramiko doesn't provide errno or similiar |
131 | 05cd934d | René Nussbaumer | # so we can just assume that the path already exists |
132 | 5c654e95 | Iustin Pop | logging.info("Path %s seems already to exist on remote node. Ignoring.", |
133 | 05cd934d | René Nussbaumer | auth_path) |
134 | 05cd934d | René Nussbaumer | |
135 | 05cd934d | René Nussbaumer | for name, (data, perm) in filemap.iteritems(): |
136 | 05cd934d | René Nussbaumer | _WriteSftpFile(sftp, name, perm, data) |
137 | 05cd934d | René Nussbaumer | |
138 | 05cd934d | René Nussbaumer | authorized_keys = sftp.open(auth_keys, "a+") |
139 | 05cd934d | René Nussbaumer | try: |
140 | 05cd934d | René Nussbaumer | # We don't have to close, as the close happened already in AddAuthorizedKey |
141 | 05cd934d | René Nussbaumer | utils.AddAuthorizedKey(authorized_keys, filemap[pub_key][0]) |
142 | 05cd934d | René Nussbaumer | finally: |
143 | 05cd934d | René Nussbaumer | authorized_keys.close() |
144 | 05cd934d | René Nussbaumer | |
145 | 05cd934d | René Nussbaumer | _InvokeDaemonUtil(transport, "reload-ssh-keys") |
146 | 05cd934d | René Nussbaumer | |
147 | 05cd934d | René Nussbaumer | |
148 | 05cd934d | René Nussbaumer | def SetupNodeDaemon(transport): |
149 | 05cd934d | René Nussbaumer | """Sets the node daemon up on the other side. |
150 | 05cd934d | René Nussbaumer | |
151 | 05cd934d | René Nussbaumer | @param transport: The paramiko transport instance |
152 | 05cd934d | René Nussbaumer | |
153 | 05cd934d | René Nussbaumer | """ |
154 | 05cd934d | René Nussbaumer | noded_cert = utils.ReadFile(constants.NODED_CERT_FILE) |
155 | 05cd934d | René Nussbaumer | |
156 | 05cd934d | René Nussbaumer | sftp = transport.open_sftp_client() |
157 | 05cd934d | René Nussbaumer | _WriteSftpFile(sftp, constants.NODED_CERT_FILE, 0400, noded_cert) |
158 | 05cd934d | René Nussbaumer | |
159 | 05cd934d | René Nussbaumer | _InvokeDaemonUtil(transport, "start %s" % constants.NODED) |
160 | 05cd934d | René Nussbaumer | |
161 | 05cd934d | René Nussbaumer | |
162 | 05cd934d | René Nussbaumer | def ParseOptions(): |
163 | 05cd934d | René Nussbaumer | """Parses options passed to program. |
164 | 05cd934d | René Nussbaumer | |
165 | 05cd934d | René Nussbaumer | """ |
166 | 05cd934d | René Nussbaumer | program = os.path.basename(sys.argv[0]) |
167 | 05cd934d | René Nussbaumer | |
168 | 05cd934d | René Nussbaumer | parser = optparse.OptionParser(usage=("%prog [--debug|--verbose] <node>" |
169 | 05cd934d | René Nussbaumer | " <node...>"), prog=program) |
170 | 05cd934d | René Nussbaumer | parser.add_option(cli.DEBUG_OPT) |
171 | 05cd934d | René Nussbaumer | parser.add_option(cli.VERBOSE_OPT) |
172 | 05cd934d | René Nussbaumer | |
173 | 05cd934d | René Nussbaumer | (options, args) = parser.parse_args() |
174 | 05cd934d | René Nussbaumer | |
175 | 05cd934d | René Nussbaumer | return (options, args) |
176 | 05cd934d | René Nussbaumer | |
177 | 05cd934d | René Nussbaumer | |
178 | 05cd934d | René Nussbaumer | def SetupLogging(options): |
179 | 05cd934d | René Nussbaumer | """Sets up the logging. |
180 | 05cd934d | René Nussbaumer | |
181 | 05cd934d | René Nussbaumer | @param options: Parsed options |
182 | 05cd934d | René Nussbaumer | |
183 | 05cd934d | René Nussbaumer | """ |
184 | 05cd934d | René Nussbaumer | fmt = "%(asctime)s: %(threadName)s " |
185 | 05cd934d | René Nussbaumer | if options.debug or options.verbose: |
186 | 05cd934d | René Nussbaumer | fmt += "%(levelname)s " |
187 | 05cd934d | René Nussbaumer | fmt += "%(message)s" |
188 | 05cd934d | René Nussbaumer | |
189 | 05cd934d | René Nussbaumer | formatter = logging.Formatter(fmt) |
190 | 05cd934d | René Nussbaumer | |
191 | 05cd934d | René Nussbaumer | file_handler = logging.FileHandler(constants.LOG_SETUP_SSH) |
192 | 05cd934d | René Nussbaumer | stderr_handler = logging.StreamHandler() |
193 | 05cd934d | René Nussbaumer | stderr_handler.setFormatter(formatter) |
194 | 05cd934d | René Nussbaumer | file_handler.setFormatter(formatter) |
195 | 5c654e95 | Iustin Pop | file_handler.setLevel(logging.INFO) |
196 | 05cd934d | René Nussbaumer | |
197 | 05cd934d | René Nussbaumer | if options.debug: |
198 | 5c654e95 | Iustin Pop | stderr_handler.setLevel(logging.DEBUG) |
199 | 05cd934d | René Nussbaumer | elif options.verbose: |
200 | 05cd934d | René Nussbaumer | stderr_handler.setLevel(logging.INFO) |
201 | 05cd934d | René Nussbaumer | else: |
202 | 5c654e95 | Iustin Pop | stderr_handler.setLevel(logging.WARNING) |
203 | 05cd934d | René Nussbaumer | |
204 | 05cd934d | René Nussbaumer | root_logger = logging.getLogger("") |
205 | 5c654e95 | Iustin Pop | root_logger.setLevel(logging.INFO) |
206 | 05cd934d | René Nussbaumer | root_logger.addHandler(stderr_handler) |
207 | 05cd934d | René Nussbaumer | root_logger.addHandler(file_handler) |
208 | 8647a52c | Iustin Pop | |
209 | 8647a52c | Iustin Pop | # This is the paramiko logger instance |
210 | 8647a52c | Iustin Pop | paramiko_logger = logging.getLogger("paramiko") |
211 | 05cd934d | René Nussbaumer | paramiko_logger.addHandler(file_handler) |
212 | 5c654e95 | Iustin Pop | # We don't want to debug Paramiko, so filter anything below warning |
213 | 5c654e95 | Iustin Pop | paramiko_logger.setLevel(logging.WARNING) |
214 | 05cd934d | René Nussbaumer | |
215 | 05cd934d | René Nussbaumer | |
216 | 05cd934d | René Nussbaumer | def main(): |
217 | 05cd934d | René Nussbaumer | """Main routine. |
218 | 05cd934d | René Nussbaumer | |
219 | 05cd934d | René Nussbaumer | """ |
220 | 05cd934d | René Nussbaumer | (options, args) = ParseOptions() |
221 | 05cd934d | René Nussbaumer | |
222 | 05cd934d | René Nussbaumer | SetupLogging(options) |
223 | 05cd934d | René Nussbaumer | |
224 | 05cd934d | René Nussbaumer | passwd = getpass.getpass(prompt="%s password:" % constants.GANETI_RUNAS) |
225 | 7bff16bd | Iustin Pop | ssh_port = netutils.GetDaemonPort("ssh") |
226 | 05cd934d | René Nussbaumer | |
227 | 8647a52c | Iustin Pop | # Below, we need to join() the transport objects, as otherwise the |
228 | 8647a52c | Iustin Pop | # following happens: |
229 | 8647a52c | Iustin Pop | # - the main thread finishes |
230 | 8647a52c | Iustin Pop | # - the atexit functions run (in the main thread), and cause the |
231 | 8647a52c | Iustin Pop | # logging file to be closed |
232 | 8647a52c | Iustin Pop | # - a tiny bit later, the transport thread is finally ending, and |
233 | 8647a52c | Iustin Pop | # wants to log one more message, which fails as the file is closed |
234 | 8647a52c | Iustin Pop | # now |
235 | 8647a52c | Iustin Pop | |
236 | 05cd934d | René Nussbaumer | for host in args: |
237 | 7bff16bd | Iustin Pop | transport = paramiko.Transport((host, ssh_port)) |
238 | 8647a52c | Iustin Pop | try: |
239 | 8647a52c | Iustin Pop | transport.connect(username=constants.GANETI_RUNAS, password=passwd) |
240 | 8647a52c | Iustin Pop | except Exception, err: |
241 | 8647a52c | Iustin Pop | logging.error("Connection or authentication failed to host %s: %s", |
242 | 8647a52c | Iustin Pop | host, err) |
243 | 8647a52c | Iustin Pop | transport.close() |
244 | 8647a52c | Iustin Pop | # this is needed for compatibility with older Paramiko or Python |
245 | 8647a52c | Iustin Pop | # versions |
246 | 8647a52c | Iustin Pop | transport.join() |
247 | 8647a52c | Iustin Pop | continue |
248 | 05cd934d | René Nussbaumer | try: |
249 | 05cd934d | René Nussbaumer | try: |
250 | 05cd934d | René Nussbaumer | SetupSSH(transport) |
251 | 05cd934d | René Nussbaumer | SetupNodeDaemon(transport) |
252 | 05cd934d | René Nussbaumer | except errors.GenericError, err: |
253 | 8647a52c | Iustin Pop | logging.error("While doing setup on host %s an error occured: %s", |
254 | 8647a52c | Iustin Pop | host, err) |
255 | 05cd934d | René Nussbaumer | finally: |
256 | 05cd934d | René Nussbaumer | transport.close() |
257 | 8647a52c | Iustin Pop | # this is needed for compatibility with older Paramiko or Python |
258 | 8647a52c | Iustin Pop | # versions |
259 | 8647a52c | Iustin Pop | transport.join() |
260 | 05cd934d | René Nussbaumer | |
261 | 05cd934d | René Nussbaumer | |
262 | 05cd934d | René Nussbaumer | if __name__ == "__main__": |
263 | 05cd934d | René Nussbaumer | main() |