Use specific key to connect to jump host without modifying ssh config file
Solution 1:
No, you'll have to either
-
use two
-iparameters and allow ssh to offer both keys to both servers (the order of-iversus-Jdoesn't matter); -
or replace
-Jwith a manual ProxyCommand:ssh target -oProxyCommand="ssh proxyhost -i ~/otherkey -W %h:%p" -i ~/thiskey