Sorry that I didn't exactly describe the problem. Because of StrictHostKeyChecking=ask is the default setting, If you have no host key for the server, it will show you the fingerprint and ask you to confirm AND Because of setting a /dev/null as the user host key database, The ssh connection always waits for the test scripts says "yes" for confirmation. So the test scripts will be blocked at this stage. (unless the option StrictHostKeyChecking has been disabled in /etc/ssh/ssh_config or ~/.ssh/config file or cmdline)
>>> Lucas Meneghel Rodrigues <[email protected]> 02/28/14 4:04 AM >>> On 02/25/2014 11:07 AM, Lin Ma wrote: > The tests which containing ssh session will be blocked by host key > checking if the incoming ssh host keys are not listed in known_hosts > file of guest, So disable the checking. Well, we're already setting a /dev/null as the UserKnownHosts file (see the line above your changes), so that was the fix for the problem you're describing. We've never had a problem since. I'm not sure why you had this problem, but I'm inclined to NACK this. Any ideas of what was going on, and why this patch actually fixed them? > Signed-off-by: Lin Ma <[email protected]> > --- > virttest/remote.py | 4 ++++ > virttest/utils_env.py | 1 + > 2 files changed, 5 insertions(+) > > diff --git a/virttest/remote.py b/virttest/remote.py > index 66cb26e..99a3f6e 100644 > --- a/virttest/remote.py > +++ b/virttest/remote.py > @@ -207,6 +207,7 @@ def remote_login(client, host, port, username, password, > prompt, linesep="\n", > """ > if client == "ssh": > cmd = ("ssh -o UserKnownHostsFile=/dev/null " > + "-o StrictHostKeyChecking=no " > "-o PreferredAuthentications=password -p %s %s@%s" % > (port, username, host)) > elif client == "telnet": > @@ -388,6 +389,7 @@ def scp_to_remote(host, port, username, password, > local_path, remote_path, > limit = "-l %s" % (limit) > > command = ("scp -v -o UserKnownHostsFile=/dev/null " > + "-o StrictHostKeyChecking=no " > "-o PreferredAuthentications=password -r %s " > "-P %s %s %s@\[%s\]:%s" % > (limit, port, local_path, username, host, remote_path)) > @@ -416,6 +418,7 @@ def scp_from_remote(host, port, username, password, > remote_path, local_path, > limit = "-l %s" % (limit) > > command = ("scp -v -o UserKnownHostsFile=/dev/null " > + "-o StrictHostKeyChecking=no " > "-o PreferredAuthentications=password -r %s " > "-P %s %s@\[%s\]:%s %s" % > (limit, port, username, host, remote_path, local_path)) > @@ -446,6 +449,7 @@ def scp_between_remotes(src, dst, port, s_passwd, > d_passwd, s_name, d_name, > limit = "-l %s" % (limit) > > command = ("scp -v -o UserKnownHostsFile=/dev/null -o " > + "-o StrictHostKeyChecking=no " > "PreferredAuthentications=password -r %s -P %s" > " %s@\[%s\]:%s %s@\[%s\]:%s" % > (limit, port, s_name, src, s_path, d_name, dst, d_path)) > diff --git a/virttest/utils_env.py b/virttest/utils_env.py > index 9355c46..9ae0642 100644 > --- a/virttest/utils_env.py > +++ b/virttest/utils_env.py > @@ -303,6 +303,7 @@ class Env(UserDict.IterableUserDict): > cmd = "%s -npvvvi any 'port 68'" % > utils_misc.find_command("tcpdump") > if self._params.get("remote_preprocess") == "yes": > login_cmd = ("ssh -o UserKnownHostsFile=/dev/null -o " > + "-o StrictHostKeyChecking=no " > "PreferredAuthentications=password -p %s %s@%s" % > (port, username, address)) > >
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