Re: Let's Encrypt

On 13/10/2019 19:52, Leif Pedersen wrote:
> On Sat, Oct 12, 2019 at 6:28 PM Garrett Wollman <[email protected]>
> wrote:
>
>> <<On Tue, 10 Sep 2019 07:52:31 +0700, Victor Sudakov <[email protected]>
>> said:
>>
>>> Trond Endrestøl wrote:
>>>> #minute      hour    mday    month   wday    who     command
>>>>
>>>> 52   4       1       *       *       root    certbot renew --quiet
>> --pre-hook "service apache24 stop" --post-hook "service apache24 start"
>>>> 52   1       15      *       *       root    certbot renew --quiet
>> --pre-hook "service apache24 stop" --post-hook "service apache24 start"
>>
>>> Is it safe to run certbot as root?
>> I can't speak to certbot (I currently use acmetool) but in general,
>> the thing that certbot does requires the ability to signal whatever
>> process is using the certificates, which is normally going to be a web
>> server but might be a mail server, name server, RADIUS server, or some
>> other application -- as shown in the example above.  So if you don't
>> run it as root (probably smart) you'll need to find another way to
>> tell the TLS server application to reload its certificates when
>> needed.
>>
>> -GAWollman
>>
> A good point. One option might be to run two cron jobs. One job would run
> certbot as an unprivileged user, and the other would run "service apache24
> restart" as root an hour or so later. (Or maybe reload is enough.)
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Or something like this. Check if there are new certs and if so do 
something with them:

    #!/usr/local/bin/bash

    if [[ -n $(/usr/bin/find /usr/local/etc/dehydrated/rsa/ -mtime -1h
    -type f) ]]
    then
       /usr/bin/awk '{print $1}' /usr/local/etc/dehydrated/domains.txt | \
       while read a ; \
         do
           # Copy certs for HAproxy
           /bin/cat /usr/local/etc/dehydrated/rsa/"$a"/cert.pem \
           /usr/local/etc/dehydrated/rsa/"$a"/privkey.pem \
           /usr/local/etc/dehydrated/rsa/"$a"/chain.pem \
           /usr/local/etc/ssl/dhparams.pem > \
           /usr/local/etc/ssl/haproxy/"$a".pem.rsa
           /bin/chmod 600 /usr/local/etc/ssl/haproxy/"$a".pem.rsa
           /bin/cp /usr/local/etc/dehydrated/rsa/"$a"/chain.pem
    /usr/local/etc/ssl/haproxy/"$a".pem.rsa.issuer

           # Copy certs for HAproxy, this time the ECDSA stuff
           /bin/cat /usr/local/etc/dehydrated/ecdsa/"$a"/cert.pem \
           /usr/local/etc/dehydrated/ecdsa/"$a"/privkey.pem \
           /usr/local/etc/dehydrated/ecdsa/"$a"/chain.pem \
           /usr/local/etc/ssl/dhparams.pem > \
           /usr/local/etc/ssl/haproxy/"$a".pem.ecdsa
           /bin/chmod 600 /usr/local/etc/ssl/haproxy/"$a".pem.ecdsa
           /bin/cp /usr/local/etc/dehydrated/ecdsa/"$a"/chain.pem
    /usr/local/etc/ssl/haproxy/"$a".pem.ecdsa.issuer
       done

    # Some standard stuff for configs with fixed cert names
       /bin/cp /usr/local/etc/dehydrated/rsa/`hostname`/cert.pem
    /usr/local/etc/ssl/syslog-ng/
       /bin/cp /usr/local/etc/dehydrated/rsa/`hostname`/privkey.pem
    /usr/local/etc/ssl/syslog-ng/
       /bin/cp /usr/local/etc/dehydrated/rsa/`hostname`/fullchain.pem
    /usr/local/etc/ssl/syslog-ng/
       /bin/cp /usr/local/etc/dehydrated/rsa/`hostname`/chain.pem
    /usr/local/etc/ssl/syslog-ng/
       /usr/local/bin/c_rehash /usr/local/etc/ssl/syslog-ng/

    # Restart services
       /usr/bin/killall haproxy
       /usr/local/etc/rc.d/haproxy restart
       /usr/local/etc/rc.d/syslog-ng restart
       /usr/local/etc/rc.d/postfix restart
    fi

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