Final version of SSL gen script for kafka

Written by

Sorin Tudor

in

Hi,

I wrote a lot about this topic but it seems that i came to the procedure specified by Confluent.
Here is the right way to do it, at least for now:

#!/bin/bash
HOST=<%= @fqdn %>
PASSWORD=<%= @pass %>
KEYSTOREPASS=<%= @keystorepass %>
VALIDITY=365

keytool -keystore kafka.server.keystore.jks -alias ${HOST} -validity $VALIDITY -genkey -dname "CN=${HOST}, OU=MyTeam, O=MyCompany, L=Bucharest S=Romania C=RO" -storepass $KEYSTOREPASS -keypass $KEYSTOREPASS
openssl req -new -x509 -keyout ca-key -out ca-cert -days $VALIDITY -subj "/CN=${HOST}/OU=MyTeam/O=MyCompany/L=Bucharest/S=Romania/C=RO" -passout pass:$PASSWORD
keytool -keystore kafka.server.truststore.jks -alias CARoot -import -file ca-cert -storepass $KEYSTOREPASS -noprompt
keytool -keystore kafka.server.keystore.jks -alias CARoot -import -file ca-cert -storepass $KEYSTOREPASS -noprompt
keytool -keystore kafka.server.keystore.jks -alias ${HOST} -certreq -file cert-file-${HOST}.host -storepass $KEYSTOREPASS
openssl x509 -req -CA ca-cert -CAkey ca-key -in cert-file-${HOST}.host -out cert-signed-${HOST}.host -days $VALIDITY -CAcreateserial -passin pass:$PASSWORD
keytool -keystore kafka.server.keystore.jks -alias ${HOST} -import -file cert-signed-${HOST}.host -storepass $KEYSTOREPASS -noprompt
keytool -keystore kafka.client.keystore.jks -alias CARoot -import -file ca-cert -storepass $KEYSTOREPASS -noprompt
keytool -keystore kafka.client.truststore.jks -alias CARoot -import -file ca-cert -storepass $KEYSTOREPASS -noprompt

<% @servers.each do |server| 
separate = server.split("."); host = separate[0]-%>
# <%= server %>
keytool -keystore <%= host %>.server.keystore.jks -alias <%= server %> -validity $VALIDITY -genkey -dname "CN=<%= server %>, OU=MyTeam, O=MyCompany, L=Bucharest S=Romania C=RO" -storepass $KEYSTOREPASS -keypass $KEYSTOREPASS
keytool -keystore <%= host %>.server.keystore.jks -alias <%= server %> -certreq -file cert-file-<%= server %>.host -storepass $KEYSTOREPASS
openssl x509 -req -CA ca-cert -CAkey ca-key -in cert-file-<%= server %>.host -out cert-signed-<%= server %>.host -days $VALIDITY -CAcreateserial -passin pass:$PASSWORD
keytool -keystore <%= host %>.server.keystore.jks -alias CARoot -import -file ca-cert -storepass $KEYSTOREPASS -noprompt
keytool -keystore <%= host %>.server.keystore.jks -alias <%= server %> -import -file cert-signed-<%= server %>.host -storepass $KEYSTOREPASS -noprompt

<% end -%>

keytool -keystore kafka.client.keystore.jks -alias 'client' -validity $VALIDITY -genkey -dname "CN=${HOST}, OU=MyTeam, O=MyCompany, L=Bucharest S=Romania C=RO" -storepass $KEYSTOREPASS -keypass $KEYSTOREPASS
keytool -keystore kafka.client.keystore.jks -alias 'client' -certreq -file cert-file-client.host -storepass $KEYSTOREPASS
openssl x509 -req -CA ca-cert -CAkey ca-key -in cert-file-client.host -out cert-signed-client.host -days $VALIDITY -CAcreateserial -passin pass:$PASSWORD
keytool -keystore kafka.client.keystore.jks -alias 'client' -import -file cert-signed-client.host -storepass $KEYSTOREPASS -noprompt

The puppet code needs to be modified also. You can find the initial manifest here The difference is


if (member($servers,$item[0]) and $item[1] == "disabled") {
    $fqdn_split = split($item[0], '[.]')
        exec{"copy files to ${item[0]}":
            cwd => '/home/kafka',
            path   => '/usr/bin:/usr/sbin:/bin',
            command => "scp /home/kafka/${fqdn_split[0]}.server.keystore.jks kafka@${item[0]}:/home/kafka/kafka.server.keystore.jks; scp /home/kafka/kafka.server.truststore.jks kafka@${item[0]}:/home/kafka/kafka.server.truststore.jks",
            user => 'kafka',
        }
        }

Enough on this topic.

Cheers

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