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rexec

Parallel SSH executor in Rust with static binary. It can read servers from ~/.ssh/known_hosts

or even expand servers from bash expanshion line cassandra-[1:5].{prod,dev}.example.com

Rust-static-build

Usage

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Parallel SSH executor in Rust

Usage: rexec [OPTIONS] --expression <EXPRESSION> --command <COMMAND>

Options:
  -u, --username <USERNAME>      [default: ab]
  -k, --known-hosts              Use known_hosts to build servers list
  -e, --expression <EXPRESSION>  Expression to build server list
  -c, --command <COMMAND>        Command to execute on servers
      --code                     Show exit code ONLY
  -f, --noconfirm                Don't ask for confirmation
  -p, --parallel <PARALLEL>      [default: 100]
  -h, --help                     Print help
  -V, --version                  Print version

image

Examples

$ rexec -f \
    -e 'cassandra-gce-or-[1:2]' \
    -u ab \
    -c 'uname -r; date'
[INFO ] Using string expansion to build server list.
[INFO ] Matched hosts:
[INFO ] cassandra-gce-or-1.prod.example.com [2.22.123.79]
[INFO ] cassandra-gce-or-2.prod.example.com [2.22.123.158]
Continue on following 2 servers? y
[INFO ] Run command on 2 servers.

cassandra-gce-or-1.prod.example.com
Exit code [0] / stdout 45 bytes / stderr 0 bytes
STDOUT
║ 5.15.0-1040-gcp
║ Thu Sep  7 13:44:40 UTC 2023

cassandra-gce-or-2.prod.example.com
Exit code [0] / stdout 45 bytes / stderr 0 bytes
STDOUT
║ 5.15.0-1040-gcp
║ Thu Sep  7 13:44:40 UTC 2023