1LOGFORWARDER(1)                                                LOGFORWARDER(1)
2
3
4

NAME

6       logForwarder  -  Log  item to manage ssh tunnels between log components
7       and tools
8

NAME

10       logForwarder - Tools for creating and maintaining ssh  tunnels  between
11       log components in complex topologies
12

SYNOPSYS

14          logForwarder [options] ...
15

DESCRIPTION

17       logForwarder  helps  simplifying the maintenance of ssh tunnels between
18       log components and tools, thus improving log scalability and configura‐
19       tion  in complex network topologies. The components may be defined in a
20       program to be monitored, they publish messages in the  LogCentral.  The
21       tools get the messages subscribing to the LogCentral.
22
23       Before starting a log forwarder, you must:
24
25       · launch omniNames on the local and remotes hosts.
26
27       · launch  the remote peer only defining its name and network configura‐
28         tion.
29
30       · launch local peer and give him remote  peer's  name,  ssh  connection
31         credentials,  remote port to use and pass -C option to create the ssh
32         tunnel.
33
34       [Remark: forwarders must be launched before the log tools/components]
35

OPTIONS

37       --name [name]
38              String identifying the forwarder
39
40       --peer-name [name]
41              String identifying its peer on the other network
42
43       --ssh-host [host]
44              Host hosting the ssh tunnel
45
46       --ssh-login [login]
47              Login used to establish the  ssh  connection  (default:  current
48              user login).
49
50       --ssh-key [/path/to/ssh/key]
51              Path  to  the  ssh key (the private one !) used to establish the
52              ssh connection (default: $HOME/.ssh/id_rsa).
53
54       --remote-port [port]
55              Port listening on the ssh host.
56
57       --remote-host [host]
58              Host to which the connection is made by the tunnel  (corresponds
59              to ssh options -L and -R).
60
61       --nb-retry [nb]
62              Number of times that the local forwarder will try to bind itself
63              to the remote forwarder (default: 3).
64
65       --peer-ior [IOR]
66              Pass remote forwarder's IOR. By  default,  the  local  forwarder
67              will retrive its peer IOR.
68

EXAMPLE

70       Here's a simple configuration:
71
72       · We  have  two  domains: net1 and net2, forwarders will be launched on
73         hosts fwd.net1 and fwd.net2.
74
75       · There's no link between hosts fwd.net1  and  fwd.net2  but  user  may
76         access fwd.net2 from fwd.net1 using a ssh connection.
77
78       · We'll name fwd.net1 forwarder Fwd1 and fwd.net2 fowarder Fwd2.
79
80       · One  tool  lives  in  fwd.net2  while  a  component lives on the net1
81         domain.
82
83       Command line for launchind Fwd1
84
85          fwd.net1$ logForwarder --name Fwd1 --peer-name Fwd2 \
86            --ssh-host fwd.net2 --ssh-login dietUser \
87            --ssh-key id rsa net2 --remote-port 50000
88
89       Command line to launch Fwd2
90
91          fwd.net2$ logForwarder --name Fwd2
92

RATIONALE

94       The log service uses CORBA as its communication  layer.  While  it's  a
95       flexible  and  robust  middleware, it remains hard deploying the log on
96       heterogeneous networks that are not reachable except through  ssh  tun‐
97       nels.  Log forwarders help administrator configuring their grid without
98       manually set-up ssh tunnels which arguably is neither simple nor  scal‐
99       able.  Log forwarders make it very easy configuring such topologies.
100

102   Copyright
103       (C)2011,  GRAAL, INRIA Rhone-Alpes, 46 allee d'Italie, 69364 Lyon cedex
104       07, France all right reserved <diet-dev@ens-lyon.fr>
105
106   License
107       This program is free software: you can redistribute it and/or mod‐  ify
108       it  under the terms of the GNU General Public License as pub‐ lished by
109       the Free Software Foundation, either version 3 of the License,  or  (at
110       your option) any later version. This program is distributed in the hope
111       that it will be useful, but WITHOUT  ANY  WARRANTY;  without  even  the
112       implied  warranty  of  MERCHANTABILITY or FITNESS FOR A PARTICULAR PUR‐
113       POSE. See the GNU General Pub- lic Li‐  cense  for  more  details.  You
114       should  have  received  a  copy of the GNU General Public License along
115       with this program. If not, see <http://www.gnu.org/licenses/>.
116

AUTHORS

118       GRAAL INRIA Rhone-Alpes 46 allee d'Italie 69364 Lyon cedex  07,  FRANCE
119       Email: <diet-dev@ens-lyon.fr> WWW: http://graal.ens-lyon.fr/DIET
120

SEE ALSO

122       omniNames(1), dietForwarder(1), LogCentral(1)
123

BUGS

125       On some systems, forwarder rules won't work unless you use IP addresses
126       instead of hostnames
127

AUTHOR

129       haikel.guemar@sysfera.com, kevin.coulomb@sysfera.com
130
131       License: GPLv3
132

134       DIET developers
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1390.1                               2011-05-11                   LOGFORWARDER(1)
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