grep command inside EOF doesn't seems to be executing on remote hosts [UNIX BASH] - bash

Question

Here is the chunk of code for reference:-
Output:
I have checked the variable values using echo and those looks fine.
But what I want do achieve is searching logs on remote hosts using grep which does not give any output.
for dir in ${log_path}
do
for host in ${Host}
do
if [[ "${userinputserverhost}" == "${host}" ]]
then
ssh -q -T username#userinputserverhost "bash -s" <<-'EOF' 2>&1 | tee -a ${LogFile}
echo -e "Fetching details: \n"
`\$(grep -A 5 -s "\${ID}" "\${dir}"/archive/*.log)`
EOF
fi
break
done
done

Answer 1

First, remove all the crap around the grep.
Second, you're overquoting your vars.
Third, skip the "bash -s" if you can.
ssh -q -T username#userinputserverhost <<-'EOF' 2>&1 | tee -a ${LogFile}
echo -e "Fetching details: \n"
grep -A 5 -s "${ID}" "${dir}"/archive/*.log
EOF
Fourth, I don't see where $ID is set...so if that's being loaded on the remote system by the login or something, then that one would need the dollar sign backslashed.
Finally, be aware that here-docs are great, but sometimes here-strings are simpler if you can spare the quotes.
$: ssh 2>&1 dudeling#sandbox-server '
> date
> whoami
> ' | tee -a foo.txt
Fri Apr 30 09:23:09 EDT 2021
dudeling
$: cat foo.txt
Fri Apr 30 09:23:09 EDT 2021
dudeling
That one is more a matter of taste. Even better, if you can, write your remote-script to a local file & use that. And of course, you can always add set -vx into the script to see what gets remotely executed.
cat >tmpScript <<-'EOF'
echo -e "Fetching details: \n"
set -vx
grep -A 5 -s "${ID}" "${dir}"/archive/*.log
EOF
ssh <tmpScript 2>&1 -q -T username#userinputserverhost | tee -a ${LogFile}
Now you have an exact copy of what was issued for debugging.

Answer 2

Thanks Paul for spending time and coming up with suggestions/solutions.
I have managed to get it working couple of days back. Would have felt happy to say that your solution worked 100% but even satisfied that I got it sorted on my own as it helped me learn some new stuff.
FYI - grep -A 5 -s "${ID}" "${dir}"/archive/*.log - this will work but only by using shell built-in 'declare -p' to declare the variables within EOF. Also, I read somewhere and it is recommended to use EOF unqouted as it caters variable expansion to remote hosts without any trouble.
Below piece of code is working for me in bash:
ssh -q -T username#userinputserverhost <<-EOF 2>&1 | tee -a ${LogFile}
echo -e "Fetching details: \n"
$(declare -p ID)
$(declare -p dir)
grep -A 5 -s "${ID}" "${dir}"/archive/*.log
EOF