NeZha (哪吒)
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.
Installation
pip3 install nezha-ssh
Usage
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