Execute SSH in parallel

You may need to execute commands on remote hosts in parallel. For such purposes, decapod-admin uses its own implementation of pdsh integrated with Decapod.

Using decapod-admin pdsh, you can execute commands on multiple hosts in parallel, upload files and download them from remote hosts. For details on decapod-admin pdsh usage and all available commands and options, run decapod-admin pdsh --help.

Examples

root@7252bfd5947d:/# decapod-admin pdsh exec -- ls -la
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: total 32
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: drwxr-xr-x 5 ansible ansible 4096 Feb 15 09:22 .
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: drwxr-xr-x 4 root    root    4096 Feb 15 08:48 ..
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: drwx------ 3 ansible ansible 4096 Feb 15 09:22 .ansible
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: -rw-r--r-- 1 ansible ansible  220 Aug 31  2015 .bash_logout
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: -rw-r--r-- 1 ansible ansible 3771 Aug 31  2015 .bashrc
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: drwx------ 2 ansible ansible 4096 Feb 15 09:22 .cache
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: -rw-r--r-- 1 ansible ansible  675 Aug 31  2015 .profile
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: drwx------ 2 ansible ansible 4096 Feb 15 08:49 .ssh
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: -rw-r--r-- 1 ansible ansible    0 Feb 15 09:22 .sudo_as_admin_successful
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      : total 32
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      \
: drwxr-xr-x 5 ansible ansible 4096 Feb 15 10:40 .
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      \
: drwxr-xr-x 4 root    root    4096 Feb 15 08:48 ..
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      \
: drwx------ 3 ansible ansible 4096 Feb 15 09:22 .ansible
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      \
: -rw-r--r-- 1 ansible ansible  220 Aug 31  2015 .bash_logout
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      \
: -rw-r--r-- 1 ansible ansible 3771 Aug 31  2015 .bashrc
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      \
: drwx------ 2 ansible ansible 4096 Feb 15 09:22 .cache
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      \
: -rw-r--r-- 1 ansible ansible  675 Aug 31  2015 .profile
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      \
: drwx------ 2 ansible ansible 4096 Feb 15 08:49 .ssh
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      \
: -rw-r--r-- 1 ansible ansible    0 Feb 15 09:22 .sudo_as_admin_successful
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: total 36
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: drwxr-xr-x 5 ansible ansible 4096 Feb 15 10:00 .
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: drwxr-xr-x 4 root    root    4096 Feb 15 08:48 ..
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: drwx------ 3 ansible ansible 4096 Feb 15 09:22 .ansible
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: -rw------- 1 ansible ansible    7 Feb 15 09:43 .bash_history
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: -rw-r--r-- 1 ansible ansible  220 Aug 31  2015 .bash_logout
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: -rw-r--r-- 1 ansible ansible 3771 Aug 31  2015 .bashrc
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: drwx------ 2 ansible ansible 4096 Feb 15 09:22 .cache
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: -rw-r--r-- 1 ansible ansible  675 Aug 31  2015 .profile
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: drwx------ 2 ansible ansible 4096 Feb 15 08:49 .ssh
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: -rw-r--r-- 1 ansible ansible    0 Feb 15 09:22 .sudo_as_admin_successful
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      : total 32
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      \
: drwxr-xr-x 5 ansible ansible 4096 Feb 15 10:30 .
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      \
: drwxr-xr-x 4 root    root    4096 Feb 15 08:48 ..
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      \
: drwx------ 3 ansible ansible 4096 Feb 15 09:22 .ansible
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      \
: -rw-r--r-- 1 ansible ansible  220 Aug 31  2015 .bash_logout
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      \
: -rw-r--r-- 1 ansible ansible 3771 Aug 31  2015 .bashrc
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      \
: drwx------ 2 ansible ansible 4096 Feb 15 09:22 .cache
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      \
: -rw-r--r-- 1 ansible ansible  675 Aug 31  2015 .profile
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      \
: drwx------ 2 ansible ansible 4096 Feb 15 08:49 .ssh
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      \
: -rw-r--r-- 1 ansible ansible    0 Feb 15 09:22 .sudo_as_admin_successful

root@7252bfd5947d:/# decapod-admin pdsh upload /etc/decapod/config.yaml .
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: Start to upload /etc/decapod/config.yaml to .
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: Finished uploading of /etc/decapod/config.yaml to .
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      \
: Start to upload /etc/decapod/config.yaml to .
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: Start to upload /etc/decapod/config.yaml to .
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: Finished uploading of /etc/decapod/config.yaml to .
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      \
: Finished uploading of /etc/decapod/config.yaml to .
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      \
: Start to upload /etc/decapod/config.yaml to .
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      \
: Finished uploading of /etc/decapod/config.yaml to .

root@7252bfd5947d:/# decapod-admin pdsh exec -- ls -lah config.yaml
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      \
: -rw-r--r-- 1 ansible ansible 3.0K Feb 15 07:37 config.yaml
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: -rw-r--r-- 1 ansible ansible 3.0K Feb 15 07:37 config.yaml
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      \
: -rw-r--r-- 1 ansible ansible 3.0K Feb 15 07:37 config.yaml
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: -rw-r--r-- 1 ansible ansible 3.0K Feb 15 07:37 config.yaml

root@7252bfd5947d:/# decapod-admin pdsh download config.yaml results/
9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5 | 10.0.0.21      \
: Start to download config.yaml to results/9f01297e-e6fb-4d9f-ae96-09d4fcb8e1f5
26261da0-2dde-41e9-8ab6-8836c806623e | 10.0.0.20      \
: Start to download config.yaml to results/26261da0-2dde-41e9-8ab6-8836c806623e
8cf8af12-89a0-477d-85e7-ce6cbe5f8a07 | 10.0.0.23      \
: Start to download config.yaml to results/8cf8af12-89a0-477d-85e7-ce6cbe5f8a07
62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93 | 10.0.0.22      \
: Start to download config.yaml to results/62adf9cb-3f2d-4ea6-94f5-bca3aebfdb93