NeZha is a famous chinese deity who can have three heads and six arms if he wants. And my NeZha tool is hoping to bring developer such multitask ability when handling multiple remote ssh servers.

NeZha is built upon Fabric.

pip3 install nezha-ssh

NeZha will simultaneously connect the ssh servers you configed and run command on all of them.

To run certain command:

python3 -m nezha -H ./test_config --cmd pwd

And if you need different commands for different server, you can pass the command line as a format string in python:

python3 -m nezha -H ./test_config --cmd "echo {NEZHA_ID}"

The {NEZHA_ID} will be interpreted as 0 to n, corresponding the order of host in the host file (the file you send to -H). Other possible values are {NEZHA_IP}.

And you can run shell script with:

python3 -m nezha -H ./test_config --file test.sh

To use REPL:

python3 -m nezha -H ./test_config --repl

The host_config(-H) file should be similar to the ssh config, for example:

# lines started with hash sign will be treated as comment.
Host A
  User alice
  HostName 127.0.0.1

Host B
  User bob
  HostName 127.0.0.1