| 3 | | == Issue description == |
| 4 | | |
| 5 | | * We found that if we run mpd with superuser privilege (i.e. root permission), normal user in each node can not connect to mpd to run R-MPI. |
| 6 | | * First, we had finished the ip and hostname mapping by modifying /etc/hosts, and then use scp to exchange ssh public key to each compute node. |
| 7 | | {{{ |
| 8 | | bio-cluster-12:~# cat /etc/hosts |
| 9 | | X.X.X.12 bio-cluster-12 |
| 10 | | X.X.X.11 bio-cluster-11 |
| 11 | | X.X.X.10 bio-cluster-10 |
| 12 | | X.X.X.9 bio-cluster-09 |
| 13 | | X.X.X.8 bio-cluster-08 |
| 14 | | X.X.X.7 bio-cluster-07 |
| 15 | | X.X.X.6 bio-cluster-06 |
| 16 | | |
| 17 | | bio-cluster-12:~# for i in 11 10 09 08 07 06; do scp .ssh/id_rsa.pub bio-cluster-$i:.ssh/authorized_keys; done |
| 18 | | }}} |
| 19 | | * We had created the same mpd.conf in each node |
| 20 | | {{{ |
| 21 | | bio-cluster-12:~# cat > /etc/mpd.conf << "EOF" |
| 22 | | > secretword=this_is_password |
| 23 | | > EOF |
| 24 | | |
| 25 | | bio-cluster-12:~# for i in 11 10 09 08 07 06; do scp /etc/mpd.conf bio-cluster-$i:/etc/.; done |
| 26 | | }}} |
| 27 | | * The mpd.hosts file is as following: |
| 28 | | {{{ |
| 29 | | bio-cluster-12:~# cat mpd.hosts |
| 30 | | bio-cluster-11 |
| 31 | | bio-cluster-10 |
| 32 | | bio-cluster-09 |
| 33 | | bio-cluster-08 |
| 34 | | bio-cluster-07 |
| 35 | | bio-cluster-06 |
| 36 | | }}} |
| 37 | | * run mpdboot with superuser privilege |
| 38 | | {{{ |
| 39 | | |
| 40 | | }}} |
| 41 | | * Reference Solution: [http://structbio.vanderbilt.edu/comp/soft/amber/start.php Getting started with AMBER] |
| | 5 | * Reference Configuration Guide: |
| | 6 | * [http://structbio.vanderbilt.edu/comp/soft/amber/start.php Getting started with AMBER] |
| | 14 | jazz@bio-cluster-12:~$ ssh-keygen -t rsa |
| | 15 | Generating public/private rsa key pair. |
| | 16 | Enter file in which to save the key (/home/jazz/.ssh/id_rsa): |
| | 17 | Enter passphrase (empty for no passphrase): |
| | 18 | Enter same passphrase again: |
| | 19 | Your identification has been saved in /home/jazz/.ssh/id_rsa. |
| | 20 | Your public key has been saved in /home/jazz/.ssh/id_rsa.pub. |
| | 21 | The key fingerprint is: |
| | 22 | XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX jazz@bio-cluster-12 |