This is a simple set of tools for managing cluster-like installations. All host-discovery is based on Avahi, most of the tools are written in Python.
Please read this document for more information about zoo itself.
To show help use -h or --help. Commands requiring host discovery can be selected using -n, -s and -a, meaning: nodes, special (currently host named deadbeef, which is the only read-write node) and all (all hosts which declared SSH over Avahi). When no hosts specified tool will use -n unless otherwise noted.
Simply list all zoo hosts.
node-3a93c2.zoo.lo node-12b018.zoo.lo node-3c15da.zoo.lo node-8eb8d6.zoo.lo node-84f07a.zoo.lo node-95412c.zoo.lo node-a5487e.zoo.lo node-9fca95.zoo.lo node-28b0d5.zoo.lo node-c050d9.zoo.lo node-647aa8.zoo.lo node-870902.zoo.lo node-35c45e.zoo.lo node-de7b7e.zoo.lo node-3c3284.zoo.lo node-252d90.zoo.lo node-ec06e7.zoo.lo node-7fc786.zoo.lo node-5e8c22.zoo.lo node-4790bb.zoo.lo
Opens cssh for zoo hosts.
Executes a command on zoo. It may randomly select a deploy host (-r), execute iteratively with delay between hosts (-d) or deploy simultaneously on all hosts (-d0).
zoo-distribute -d0 "uname -a"
node-8eb8d6.zoo.lo: Linux node-8eb8d6 3.10.1-gentoo-zoo #9 SMP Sun Aug 4 00:10:02 CEST 2013 x86_64 QEMU Virtual CPU version 1.4.2 GenuineIntel GNU/Linux
node-95412c.zoo.lo: Linux node-95412c 3.10.1-gentoo-zoo #9 SMP Sun Aug 4 00:10:02 CEST 2013 x86_64 QEMU Virtual CPU version 1.4.2 GenuineIntel GNU/Linux
node-c050d9.zoo.lo: Linux node-c050d9 3.10.1-gentoo-zoo #9 SMP Sun Aug 4 00:10:02 CEST 2013 x86_64 QEMU Virtual CPU version 1.4.2 GenuineIntel GNU/Linux
…
zoo-distribute -d1 "uname -a"
Found 20 hosts, will take about 20 seconds to execute.
Executing on node-28b0d5.zoo.lo
Linux node-28b0d5 3.10.1-gentoo-zoo #9 SMP Sun Aug 4 00:10:02 CEST 2013 x86_64 QEMU Virtual CPU version 1.4.2 GenuineIntel GNU/Linux
Executing on node-12b018.zoo.lo
Linux node-12b018 3.10.1-gentoo-zoo #9 SMP Sun Aug 4 00:10:02 CEST 2013 x86_64 QEMU Virtual CPU version 1.4.2 GenuineIntel GNU/Linux
Executing on node-a5487e.zoo.lo
Linux node-a5487e 3.10.1-gentoo-zoo #9 SMP Sun Aug 4 00:10:02 CEST 2013 x86_64 QEMU Virtual CPU version 1.4.2 GenuineIntel GNU/Linux
…
Reboots (-r) or shutdowns (-sd, default) zoo with (-d) or without (-d0) delay between next hosts. Rebooting lots of machines at the same time can be dangerous for electrical installation and cooling systems so I advise you to use this with at least 5 second delay.
Shows statistics about hardware setup and utilization of nodes. The only tool which selects special hosts by default.
CPU column format is: cores (threads) speed of first core, "Processes" column shows: active / all non-kernel threads count.
+--------------------+---------------+-------------------+-----------+----------------+---------+
| Hostname | CPU | Memory Used/Total | Processes | Load | Uptime |
+--------------------+---------------+-------------------+-----------+----------------+---------+
| deadbeef.zoo.lo | 2 (4) 1.2 GHz | 44MB / 3813MB | 1 / 27 | 0.00 0.01 0.05 | 0:36:56 |
| node-12b018.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.08 0.03 0.05 | 2:21:47 |
| node-252d90.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.00 0.01 0.05 | 2:22:11 |
| node-28b0d5.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.08 0.03 0.05 | 2:15:59 |
| node-35c45e.zoo.lo | 0 (1) 2.8 GHz | 36MB / 85MB | 1 / 24 | 0.00 0.01 0.05 | 2:20:42 |
| node-3a93c2.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.08 0.03 0.05 | 2:21:12 |
| node-3c15da.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.08 0.03 0.05 | 2:20:44 |
| node-3c3284.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.08 0.03 0.05 | 2:21:37 |
| node-4790bb.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.08 0.03 0.05 | 2:21:31 |
| node-5e8c22.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.00 0.01 0.05 | 2:21:39 |
| node-647aa8.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.16 0.05 0.06 | 2:21:51 |
| node-7fc786.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 2 / 24 | 0.08 0.03 0.05 | 2:20:23 |
| node-84f07a.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.08 0.03 0.05 | 2:20:32 |
| node-870902.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 2 / 24 | 0.00 0.01 0.05 | 2:21:05 |
| node-8eb8d6.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.00 0.01 0.05 | 2:21:45 |
| node-95412c.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 2 / 24 | 0.00 0.01 0.05 | 2:21:15 |
| node-9fca95.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.08 0.03 0.05 | 2:20:58 |
| node-a5487e.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.00 0.01 0.05 | 2:22:05 |
| node-c050d9.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.08 0.03 0.05 | 2:21:17 |
| node-de7b7e.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 1 / 24 | 0.08 0.03 0.05 | 2:20:43 |
| node-ec06e7.zoo.lo | 0 (1) 2.8 GHz | 35MB / 85MB | 2 / 24 | 0.16 0.05 0.06 | 2:20:34 |
| Total 21 nodes | 2 (24) | 756MB / 5527MB | 25 / 507 | | |
+--------------------+---------------+-------------------+-----------+----------------+---------+
Print host system information in JSON format. Should be installed, and visible in PATH on all hosts.
Author: pidpawel
Creative Commons 3.0 BY-SA, available here.
Python 3 modules: argparse, sh, PrettyTable (All are available through pip)