FAQ
Hi all,

I have to modify logrotate conf file for rsyslog with augeas.
I have this configuration:

/var/log/syslog
{
rotate 7
daily
missingok
notifempty
delaycompress
compress
postrotate
reload rsyslog >/dev/null 2>&1 || true
endscript
}

/var/log/mail.info
/var/log/mail.warn
/var/log/mail.err
/var/log/mail.log
/var/log/daemon.log
/var/log/kern.log
/var/log/auth.log
/var/log/user.log
/var/log/lpr.log
/var/log/cron.log
/var/log/debug
/var/log/messages
{
rotate 4
weekly
missingok
notifempty
compress
delaycompress
sharedscripts
postrotate
reload rsyslog >/dev/null 2>&1 || true
endscript
}

And I want to delete all rows that contains /var/log/mail* but the path
in augeas is:

/files/etc/logrotate.d/rsyslog/rules[2]/file[1] (and go on untile file[4])

node file is an array that contains all file that should be rotated, but
if I want to delete this rows without specify the array indexes, it's
possible to do?

Thanks in advance.
Regards,
Fx

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  • Luke Bigum at May 8, 2012 at 8:26 am
    Theoretically you should be able to do this:

    augtool> print /files/etc/logrotate.d/syslog/rule/file[. =~
    regexp("/var/log/mail")]

    ... but I can't get the Regular Expression function to work in augtool :-(

    You could match each one, considering you know the names of each Syslog
    Level:

    augtool> print
    /files/etc/logrotate.d/syslog/rule/file[.="/var/log/mail.info"]
    /files/etc/logrotate.d/syslog/rule/file[1] = "/var/log/mail.info"
    augtool> print
    /files/etc/logrotate.d/syslog/rule/file[.="/var/log/mail.err"]
    /files/etc/logrotate.d/syslog/rule/file[3] = "/var/log/mail.err"

    ... and so on.

    HTH,

    -Luke
    On 07/05/12 17:06, Felice Pizzurro wrote:
    Hi all,

    I have to modify logrotate conf file for rsyslog with augeas.
    I have this configuration:

    /var/log/syslog
    {
    rotate 7
    daily
    missingok
    notifempty
    delaycompress
    compress
    postrotate
    reload rsyslog >/dev/null 2>&1 || true
    endscript
    }

    /var/log/mail.info
    /var/log/mail.warn
    /var/log/mail.err
    /var/log/mail.log
    /var/log/daemon.log
    /var/log/kern.log
    /var/log/auth.log
    /var/log/user.log
    /var/log/lpr.log
    /var/log/cron.log
    /var/log/debug
    /var/log/messages
    {
    rotate 4
    weekly
    missingok
    notifempty
    compress
    delaycompress
    sharedscripts
    postrotate
    reload rsyslog >/dev/null 2>&1 || true
    endscript
    }

    And I want to delete all rows that contains /var/log/mail* but the
    path in augeas is:

    /files/etc/logrotate.d/rsyslog/rules[2]/file[1] (and go on untile
    file[4])

    node file is an array that contains all file that should be rotated,
    but if I want to delete this rows without specify the array indexes,
    it's possible to do?

    Thanks in advance.
    Regards,
    Fx

    --
    Luke Bigum

    Information Systems
    Ph: +44 (0) 20 3192 2520
    luke.bigum@lmax.com | http://www.lmax.com
    LMAX, Yellow Building, 1A Nicholas Road, London W11 4AN


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  • Dominic Cleal at May 8, 2012 at 8:39 am

    On 08/05/12 09:26, Luke Bigum wrote:
    Theoretically you should be able to do this:

    augtool> print /files/etc/logrotate.d/syslog/rule/file[. =~
    regexp("/var/log/mail")]

    ... but I can't get the Regular Expression function to work in augtool :-(
    Very nearly. Try this:

    augtool> print /files/etc/logrotate.d/syslog/rule/file[. =~
    regexp("/var/log/mail.*")]
    /files/etc/logrotate.d/syslog/rule/file[3] = "/var/log/maillog"

    The regexps are anchored by default, so you need the .* to match
    anything after "mail".

    --
    Dominic Cleal
    Red Hat Consulting
    m: +44 (0)7817 878113

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  • Felice Pizzurro at May 8, 2012 at 9:30 am
    Thanks a lot! it works fine!

    As in rsyslog logrotate conf file there are many rules, I used this
    syntax to retrieve the correct rule instead to define rule index manually:

    augtool> print /files/etc/logrotate.d/rsyslog/rule[file =~
    regexp("/var/log/mail.*")]/file[. =~ regexp("/var/log/mail.*")]
    On 08/05/2012 10:39, Dominic Cleal wrote:
    On 08/05/12 09:26, Luke Bigum wrote:
    Theoretically you should be able to do this:

    augtool> print /files/etc/logrotate.d/syslog/rule/file[. =~
    regexp("/var/log/mail")]

    ... but I can't get the Regular Expression function to work in augtool :-(
    Very nearly. Try this:

    augtool> print /files/etc/logrotate.d/syslog/rule/file[. =~
    regexp("/var/log/mail.*")]
    /files/etc/logrotate.d/syslog/rule/file[3] = "/var/log/maillog"

    The regexps are anchored by default, so you need the .* to match
    anything after "mail".
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