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clus.sh init fails at running ssh-copy-id command under slow ssh session #4

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tatsuya6502 opened this issue Mar 22, 2015 · 0 comments

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tatsuya6502 commented Mar 22, 2015

The init command in clus.sh uses expect command when it runs ssh-copy-id command.

    { eval "$EXPECT -c 'spawn $SSHCOPYID $NODE_USER@$NODE_HOST' -c 'expect password:' -c 'send $passwd\n' -c 'expect eof' &> $NULLFILE"; } || \
        die "remote user '$NODE_USER@$NODE_HOST' ssh-copy-id failed"

There seems two problems with this implementation:

The default timeout for expect seems too short, so if ssh session is slow (e.g. sshd can't resolve ssh client's host name -- UseDNS yes), expect will fire send $passwd\n before establishing the session. This causes ssh-copy-id command to fail.
When the timeout occurs, die ... part won't detect the error.

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tatsuya6502 added the Improvement label

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