[92c4b7a] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 |
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[ee8755d] | 7 | <!ENTITY logrotate-download-http "https://fedorahosted.org/releases/l/o/logrotate/logrotate-&logrotate-version;.tar.gz">
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[92c4b7a] | 8 | <!ENTITY logrotate-download-ftp " ">
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[2927f48] | 9 | <!ENTITY logrotate-md5sum "4492b145b6d542e4a2f41e77fa199ab0">
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| 10 | <!ENTITY logrotate-size "80 KB">
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| 11 | <!ENTITY logrotate-buildsize "2.0 MB">
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[92c4b7a] | 12 | <!ENTITY logrotate-time "less than 0.1 SBU">
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| 13 | ]>
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| 14 |
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| 15 | <sect1 id="logrotate" xreflabel="logrotate-&logrotate-version;">
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| 16 | <?dbhtml filename="logrotate.html"?>
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| 17 |
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| 18 | <sect1info>
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[bc5778f] | 19 | <othername>$LastChangedBy$</othername>
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| 20 | <date>$Date$</date>
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[92c4b7a] | 21 | </sect1info>
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| 22 |
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| 23 | <title>Logrotate-&logrotate-version;</title>
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| 24 |
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| 25 | <indexterm zone="logrotate">
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| 26 | <primary sortas="a-logrotate">logrotate</primary>
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| 27 | </indexterm>
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| 28 |
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| 29 | <sect2 role="package">
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| 30 | <title>Introduction to Logrotate</title>
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| 31 |
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| 32 | <para>
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[f3429309] | 33 | The <application>logrotate</application> package allows automatic rotation,
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| 34 | compression, removal, and mailing of log files.
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[92c4b7a] | 35 | </para>
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| 36 |
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[f8a84b4] | 37 | &lfs7a_checked;
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[92c4b7a] | 38 |
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| 39 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 40 | <itemizedlist spacing="compact">
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| 41 | <listitem>
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| 42 | <para>
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| 43 | Download (HTTP): <ulink url="&logrotate-download-http;"/>
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| 44 | </para>
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| 45 | </listitem>
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| 46 | <listitem>
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| 47 | <para>
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| 48 | Download (FTP): <ulink url="&logrotate-download-ftp;"/>
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| 49 | </para>
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| 50 | </listitem>
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| 51 | <listitem>
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| 52 | <para>
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| 53 | Download MD5 sum: &logrotate-md5sum;
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| 54 | </para>
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| 55 | </listitem>
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| 56 | <listitem>
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| 57 | <para>
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| 58 | Download size: &logrotate-size;
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| 59 | </para>
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| 60 | </listitem>
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| 61 | <listitem>
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| 62 | <para>
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| 63 | Estimated disk space required: &logrotate-buildsize;
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| 64 | </para>
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| 65 | </listitem>
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| 66 | <listitem>
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| 67 | <para>
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| 68 | Estimated build time: &logrotate-time;
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| 69 | </para>
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| 70 | </listitem>
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| 71 | </itemizedlist>
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| 72 |
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| 73 | <bridgehead renderas="sect3">Logrotate Dependencies</bridgehead>
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| 74 |
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| 75 | <bridgehead renderas="sect4">Required</bridgehead>
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| 76 | <para role="required">
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| 77 | <xref linkend="popt"/>
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| 78 | </para>
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| 79 |
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| 80 | <bridgehead renderas="sect4">Recommended</bridgehead>
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| 81 | <para role="recommended">
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| 82 | <xref linkend="fcron"/> (runtime)
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| 83 | </para>
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| 84 |
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| 85 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 86 | <para role="optional">
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| 87 | An <xref linkend="server-mail"/> (runtime)
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| 88 | </para>
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| 89 |
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| 90 | <para condition="html" role="usernotes">User Notes:
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| 91 | <ulink url="&blfs-wiki;/logrotate"/>
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| 92 | </para>
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| 93 | </sect2>
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| 94 |
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| 95 | <sect2 role="installation">
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| 96 | <title>Installation of Logrotate</title>
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| 97 |
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| 98 | <para>
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| 99 | Install <application>logrotate</application> by running the following
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| 100 | command:
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| 101 | </para>
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| 102 |
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[1dd7b0ae] | 103 | <screen><userinput>sed 's/-Werror//' Makefile.am &&
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| 104 | ./autogen.sh &&
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| 105 | ./configure --prefix=/usr &&
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[e909f17] | 106 | make</userinput></screen>
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[92c4b7a] | 107 |
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| 108 | <para>
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[f3429309] | 109 | To test the results, issue: <command>make test</command>.
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[92c4b7a] | 110 | </para>
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| 111 |
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| 112 | <para>
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| 113 | Now, as the <systemitem class="username">root</systemitem> user:
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| 114 | </para>
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| 115 |
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[e909f17] | 116 | <screen role="root"><userinput>make install</userinput></screen>
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[92c4b7a] | 117 |
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| 118 | </sect2>
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[1dd7b0ae] | 119 |
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[92c4b7a] | 120 | <sect2 role="commands">
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| 121 | <title>Command Explanations</title>
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| 122 |
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| 123 | <para>
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[1dd7b0ae] | 124 | <command>sed 's/-Werror//' Makefile.am</command>: Prevents the compiler
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| 125 | to stop with error when a warning is issued, since GCC 6 has introduced
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| 126 | a lot more warnings, which are triggered by the code.
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[92c4b7a] | 127 | </para>
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| 128 |
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[1dd7b0ae] | 129 | </sect2>
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[92c4b7a] | 130 |
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| 131 | <sect2 role="configuration">
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| 132 | <title>Configuring Logrotate</title>
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| 133 |
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[f3429309] | 134 | <para><application>Logrotate</application> needs a configuration file,
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| 135 | which must be passed as an argument to the command when executed. Create
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[92c4b7a] | 136 | the file as the <systemitem class="username">root</systemitem> user:</para>
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| 137 |
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| 138 | <screen role="root"><userinput>cat > /etc/logrotate.conf << EOF
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| 139 | # Begin of /etc/logrotate.conf
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| 140 |
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| 141 | # Rotate log files weekly
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| 142 | weekly
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| 143 |
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[3656def] | 144 | # Don't mail logs to anybody
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[92c4b7a] | 145 | nomail
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| 146 |
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| 147 | # If the log file is empty, it will not be rotated
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| 148 | notifempty
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| 149 |
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| 150 | # Number of backups that will be kept
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| 151 | # This will keep the 2 newest backups only
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| 152 | rotate 2
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| 153 |
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| 154 | # Create new empty files after rotating old ones
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| 155 | # This will create empty log files, with owner
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| 156 | # set to root, group set to sys, and permissions 644
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| 157 | create 0664 root sys
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| 158 |
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| 159 | # Compress the backups with gzip
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| 160 | compress
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| 161 |
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| 162 | # No packages own lastlog or wtmp -- rotate them here
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| 163 | /var/log/wtmp {
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| 164 | monthly
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| 165 | create 0664 root utmp
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| 166 | rotate 1
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| 167 | }
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| 168 |
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| 169 | /var/log/lastlog {
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| 170 | monthly
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| 171 | rotate 1
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| 172 | }
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| 173 |
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| 174 | # Some packages drop log rotation info in this directory
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| 175 | # so we include any file in it.
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| 176 | include /etc/logrotate.d
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| 177 |
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| 178 | # End of /etc/logrotate.conf
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[58720a7b] | 179 | EOF
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| 180 |
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| 181 | chmod -v 0644 /etc/logrotate.conf</userinput></screen>
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[92c4b7a] | 182 |
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| 183 | <para>Now create the <filename class='directory'>/etc/logrotate.d</filename>
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| 184 | directory as the <systemitem class="username">root</systemitem> user:</para>
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| 185 |
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| 186 | <screen role="root"><userinput> mkdir -p /etc/logrotate.d</userinput></screen>
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| 187 |
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[f3429309] | 188 | <para>At this point additional log rotation commands can be entered, typically
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[92c4b7a] | 189 | in the <filename class='directory'>/etc/logrotate.d</filename> directory.
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| 190 | For example:</para>
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| 191 |
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| 192 | <screen role="root"><userinput>cat > /etc/logrotate.d/sys.log << EOF
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[58720a7b] | 193 | /var/log/sys.log {
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[92c4b7a] | 194 | # If the log file is larger than 100kb, rotate it
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| 195 | size 100k
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| 196 | rotate 5
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| 197 | weekly
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| 198 | postrotate
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| 199 | /bin/killall -HUP syslogd
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| 200 | endscript
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| 201 | }
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[58720a7b] | 202 | EOF
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| 203 |
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| 204 | chmod -v 0644 /etc/logrotate.d/sys.log</userinput></screen>
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| 205 |
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| 206 | <para>You can designate multiple files in one entry:</para>
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| 207 |
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| 208 | <screen role="root"><userinput>cat > /etc/logrotate.d/example.log << EOF
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| 209 | file1
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| 210 | file2
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| 211 | file3 {
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| 212 | ...
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| 213 | postrotate
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| 214 | ...
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| 215 | endscript
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| 216 | }
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| 217 | EOF
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| 218 |
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| 219 | chmod -v 0644 /etc/logrotate.d/example.log</userinput></screen>
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[92c4b7a] | 220 |
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[58720a7b] | 221 | <para>You can use in the same line the list of files: file1 file2 file3.
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[f3429309] | 222 | See the logrotate man page or
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[92c4b7a] | 223 | <ulink url='http://www.techrepublic.com/article/manage-linux-log-files-with-logrotate/'/>
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| 224 | for more examples.</para>
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| 225 |
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| 226 | <para>The command <command>logrotate /etc/logrotate.conf</command> can be
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[58720a7b] | 227 | run manually, however, the command should be run daily.
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| 228 | Other useful commands are <command>logrotate -d /etc/logrotate.conf</command>
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| 229 | for debugging purposes and <command>logrotate -f /etc/logrotate.conf</command>
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| 230 | forcing the logrotate commands to be run immediately. Combining the previous
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| 231 | options <option>-df</option>, you can debug the effect of the force command.
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| 232 | When debugging, the command is only simulated, not really run, thus, eventual
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| 233 | non-existing errors appear, when some intermediate files are expected,
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| 234 | because they are not actually created.</para>
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| 235 |
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| 236 | <para>To set up <xref linkend='fcron'/> to run
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| 237 | <command>logrotate ...</command> at 3AM daily, root's crontab should be
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| 238 | edited to add:</para>
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[92c4b7a] | 239 |
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| 240 | <screen><literal>0 3 * * * /usr/sbin/logrotate /etc/logrotate.conf</literal></screen>
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| 241 |
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| 242 |
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| 243 | </sect2>
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| 244 |
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| 245 | <sect2 role="content">
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| 246 | <title>Contents</title>
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| 247 |
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| 248 | <segmentedlist>
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| 249 | <segtitle>Installed Programs</segtitle>
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| 250 | <segtitle>Installed Library</segtitle>
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| 251 | <segtitle>Installed Directories</segtitle>
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| 252 |
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| 253 | <seglistitem>
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| 254 | <seg> logrotate </seg>
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| 255 | <seg> None </seg>
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| 256 | <seg> None </seg>
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| 257 | </seglistitem>
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| 258 | </segmentedlist>
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| 259 |
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| 260 | <variablelist>
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| 261 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 262 | <?dbfo list-presentation="list"?>
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| 263 | <?dbhtml list-presentation="table"?>
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| 264 |
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| 265 | <varlistentry id="logrotate-prog">
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| 266 | <term><command>logrotate</command></term>
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| 267 | <listitem>
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| 268 | <para>
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[f3429309] | 269 | performs the log maintenance functions defined in the
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[92c4b7a] | 270 | configuration files.
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| 271 | </para>
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| 272 | <indexterm zone="logrotate logrotate-prog">
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| 273 | <primary sortas="b-logrotate-prog">logrotate</primary>
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| 274 | </indexterm>
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| 275 | </listitem>
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| 276 | </varlistentry>
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| 277 |
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| 278 | </variablelist>
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| 279 |
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| 280 | </sect2>
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| 281 |
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| 282 | </sect1>
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