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95 lines
3.4 KiB
Markdown
95 lines
3.4 KiB
Markdown
# rexec
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**Parallel SSH executor** in Rust with static binary. It can read servers from `~/.ssh/known_hosts`
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or even expand servers from bash expanshion line `cassandra-[1:5].{prod,dev}.example.com`
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[](https://github.com/house-of-vanity/rexec/actions/workflows/release.yml)
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---
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## Usage
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```shell
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Parallel SSH executor in Rust
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Usage: rexec [OPTIONS] --expression <EXPRESSION> --command <COMMAND>
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Options:
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-u, --username <USERNAME> [default: ab]
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-k, --known-hosts Use known_hosts to build servers list
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-e, --expression <EXPRESSION> Expression to build server list
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-c, --command <COMMAND> Command to execute on servers
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--code Show exit code ONLY
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-f, --noconfirm Don't ask for confirmation
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-p, --parallel <PARALLEL> [default: 100]
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-h, --help Print help
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-V, --version Print version
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```
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---
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## Examples
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```shell
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[ab@test]$ rexec -e 'cassandra-gce-sc-[1:3].bbs-prod.*' -u ab -c 'df -h /srv/cassandra'
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[INFO ] Using string expansion to build server list.
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[INFO ] Matched hosts:
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[INFO ] cassandra-gce-sc-1.bbs-prod.* [35.221.18.35]
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[INFO ] cassandra-gce-sc-2.bbs-prod.* [35.212.13.174]
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[INFO ] cassandra-gce-sc-3.bbs-prod.* [35.211.213.123]
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Continue on following 3 servers? y
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[INFO ]
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[INFO ] Run command on 3 servers.
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[INFO ]
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[INFO ] cassandra-gce-sc-2.bbs-prod.*
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Code 0
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STDOUT:
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Filesystem Size Used Avail Use% Mounted on
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/dev/mapper/storage-cassandra 1.0T 613G 411G 60% /srv/cassandra
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[INFO ] cassandra-gce-sc-1.bbs-prod.*
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Code 0
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STDOUT:
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Filesystem Size Used Avail Use% Mounted on
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/dev/mapper/storage-cassandra 1.0T 594G 430G 59% /srv/cassandra
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[INFO ] cassandra-gce-sc-3.bbs-prod.*
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Code 0
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STDOUT:
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Filesystem Size Used Avail Use% Mounted on
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/dev/mapper/storage-cassandra 1.0T 523G 502G 52% /srv/cassandra
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```
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---
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```shell
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[ab@test]$ ./rexec -u ab -k -c uptime -e admin.* -f
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[INFO ] Matched hosts:
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[INFO ] admin-gce-sc-1.lca-prod.** [35.211.27.195]
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[INFO ] admin-gce-sc-1.mmk-prod.** [35.211.79.202]
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[ERROR] admin-gce-sc-1.led-prod.** couldn't be resolved.
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[INFO ] admin-gce-sc-1.msq-dev.** [35.211.0.24]
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[ERROR] admin-gce-sc-1.hui-dev.** couldn't be resolved.
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[INFO ] Run command on 3 servers.
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[INFO ] admin.gnb-prod.**
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Code 0
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STDOUT:
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23:31:21 up 294 days, 14:14, 0 users, load average: 0.53, 0.64, 0.52
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[INFO ] admin.abe-prod.**
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Code 0
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STDOUT:
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23:31:22 up 154 days, 9:24, 0 users, load average: 0.31, 0.25, 0.18
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[INFO ] admin-gce-be-1.toy-prod.**
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Code 0
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STDOUT:
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23:31:22 up 98 days, 6:20, 0 users, load average: 0.88, 0.74, 0.80
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```
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