Up level work support of Linux servers. Modern Clouds – architecture, deploy and maintenance. – Page 27 – Up level work support of Linux servers. Modern Clouds

Tmux compilation – EVBUFFER_EOL_LF undeclared

if you got:

control.c: In function ‘control_callback’:
control.c:64: warning: implicit declaration of function ‘evbuffer_readln’
control.c:64: error: ‘EVBUFFER_EOL_LF’ undeclared (first use in this function)
control.c:64: error: (Each undeclared identifier is reported only once
control.c:64: error: for each function it appears in.)
control.c:64: warning: assignment makes pointer from integer without a cast
make: *** [control.o] Error 1

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URL Rewriting doesn’t seem to work in .htaccess – Apache2 ))

Did you check directives in your DocumentRoot ? )))

    Options Indexes FollowSymLinks MultiViews
    AllowOverride all #This was 'None' before, change it to 'all'
    Order allow,deny
    allow from all

Log Subject Lines in Postfix

Postfix does allow you to add logging messages for subject lines, and so we’ll use this to simply log a warning message for any subject line. It’s a bit of a ‘hack’, but works and doesn’t cause any problems (Postfix doesn’t block or alter the emails).

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Postfix: A self signed certificate or CSR.

To create a certificate to be used by Postfix use:

openssl req -new -x509 -days 3650 -nodes -out /etc/ssl/certs/postfix.pem -keyout /etc/ssl/private/postfix.pem

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Command to create a Dovecot certificate – self signed, CSR request.

openssl req -new -x509 -days 3650 -nodes -out /etc/ssl/certs/dovecot.pem -keyout /etc/ssl/private/dovecot.pem

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