linux的openfire运行日志配置经历

        openfire的日志可以通过/usr/openfire/lib/log4j.xml(与openfire的安装目录有关，我的openfire是安装在/usr/openfire/)的xml配置文件进行设定logs文件的位置，但是我在对openfire的进行日志文件配置后(通过设定openfireHone环境变量值export openfireHome=/usr/openfire)，一直无法在/usr/openfire/logs/目录下生成info.log、debug.log、error.log、warn.log几个日志文件，直到昨天才发现在日志文件生成在根目录下的logs文件夹即/logs/。网上说openfireHome的环境变量值，但实际上我已经在/etc/profild中设置了export openfireHome=/usr/openfire环境变量值。但是openfire运行时，{$openfireHome}的值为空的，${openfireHome}/logs/debug.log替换后变成/logs/debug.log。为了让日志文件生成在/usr/openfire/logs中，我测试了两种实现方式。

• 设定相对路径

              把<param name="File" value="${openfireHome}/logs/debug.log" />中的值改为<param name="File" value="../logs/debug.log" />,以此类推。

• 设定绝对路径
  

              把<param name="File" value="${openfireHome}/logs/debug.log" />中的值改为<param name="File" value="/usr/logs/debug.log" />,以此类推，不过个人不建议设定成绝对路径，还是使用相对路径实现。

• 设定环境变量方式

              网上介绍设定openfireHome环境变量值，就可以实现定义openfire的日志路径，个人认为这种方式最好，但是我没有测试成功，有待后续继续研究。

• 原始的log4j.xml的内容
  

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">

        <appender name="debug-out" class="org.apache.log4j.RollingFileAppender">
                <param name="File" value="${openfireHome}/logs/debug.log" />
                <param name="MaxFileSize" value="1024KB"/>
                <param name="MaxBackupIndex" value="5"/>
                <layout class="org.apache.log4j.PatternLayout">
                        <param name="ConversionPattern" value="%d{yyyy.MM.dd HH:mm:ss} %c - %m%n" />
                </layout>
                <filter class="org.apache.log4j.varia.LevelRangeFilter">
                        <param name="LevelMax" value="debug" />
                        <param name="AcceptOnMatch" value="true" />
                </filter>
        </appender>

        <appender name="info-out" class="org.apache.log4j.RollingFileAppender">
                <param name="File" value="${openfireHome}/logs/info.log" />
                <param name="MaxFileSize" value="1024KB"/>
                <param name="MaxBackupIndex" value="5"/>
                <layout class="org.apache.log4j.PatternLayout">
                        <param name="ConversionPattern" value="%d{yyyy.MM.dd HH:mm:ss} %c - %m%n" />
                </layout>
                <filter class="org.apache.log4j.varia.LevelRangeFilter">
                        <param name="LevelMax" value="info" />
                        <param name="LevelMin" value="info" />
                        <param name="AcceptOnMatch" value="true" />
                </filter>
        </appender>

        <appender name="warn-out" class="org.apache.log4j.RollingFileAppender">
                <param name="File" value="${openfireHome}/logs/warn.log" />
                <param name="MaxFileSize" value="1024KB"/>
                <param name="MaxBackupIndex" value="5"/>
                <layout class="org.apache.log4j.PatternLayout">
                        <param name="ConversionPattern" value="%d{yyyy.MM.dd HH:mm:ss} %c - %m%n" />
                </layout>
                <filter class="org.apache.log4j.varia.LevelRangeFilter">
                        <param name="LevelMax" value="warn" />
                        <param name="LevelMin" value="warn" />
                        <param name="AcceptOnMatch" value="true" />
                </filter>
        </appender>

        <appender name="error-out" class="org.apache.log4j.RollingFileAppender">
                <param name="File" value="${openfireHome}/logs/error.log" />
                <param name="MaxFileSize" value="1024KB"/>
                <param name="MaxBackupIndex" value="5"/>
                <layout class="org.apache.log4j.PatternLayout">
                        <param name="ConversionPattern" value="%d{yyyy.MM.dd HH:mm:ss} %c - %m%n" />
                </layout>
                <filter class="org.apache.log4j.varia.LevelRangeFilter">
                        <param name="LevelMin" value="error" />
                        <param name="AcceptOnMatch" value="true" />
                </filter>
        </appender>

        <!-- OF-506: Jetty INFO messages are generally not useful. Ignore them by default. -->
        <logger name="org.eclipse.jetty">
                <level value="warn" />
        </logger>

        <root>
                <level value="info" />
                <appender-ref ref="debug-out" />
                <appender-ref ref="info-out" />
                <appender-ref ref="warn-out" />
                <appender-ref ref="error-out" />
        </root>

</log4j:configuration>

• 设定为相对路径的log4j.xml
  

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">

        <appender name="debug-out" class="org.apache.log4j.RollingFileAppender">
                <param name="File" value="../logs/debug.log" />
                <param name="MaxFileSize" value="1024KB"/>
                <param name="MaxBackupIndex" value="5"/>
                <layout class="org.apache.log4j.PatternLayout">
                        <param name="ConversionPattern" value="%d{yyyy.MM.dd HH:mm:ss} %c - %m%n" />
                </layout>
                <filter class="org.apache.log4j.varia.LevelRangeFilter">
                        <param name="LevelMax" value="debug" />
                        <param name="AcceptOnMatch" value="true" />
                </filter>
        </appender>

        <appender name="info-out" class="org.apache.log4j.RollingFileAppender">
                <param name="File" value="../logs/info.log" />
                <param name="MaxFileSize" value="1024KB"/>
                <param name="MaxBackupIndex" value="5"/>
                <layout class="org.apache.log4j.PatternLayout">
                        <param name="ConversionPattern" value="%d{yyyy.MM.dd HH:mm:ss} %c - %m%n" />
                </layout>
                <filter class="org.apache.log4j.varia.LevelRangeFilter">
                        <param name="LevelMax" value="info" />
                        <param name="LevelMin" value="info" />
                        <param name="AcceptOnMatch" value="true" />
                </filter>
        </appender>

        <appender name="warn-out" class="org.apache.log4j.RollingFileAppender">
                <param name="File" value="../logs/warn.log" />
                <param name="MaxFileSize" value="1024KB"/>
                <param name="MaxBackupIndex" value="5"/>
                <layout class="org.apache.log4j.PatternLayout">
                        <param name="ConversionPattern" value="%d{yyyy.MM.dd HH:mm:ss} %c - %m%n" />
                </layout>
                <filter class="org.apache.log4j.varia.LevelRangeFilter">
                        <param name="LevelMax" value="warn" />
                        <param name="LevelMin" value="warn" />
                        <param name="AcceptOnMatch" value="true" />
                </filter>
        </appender>

        <appender name="error-out" class="org.apache.log4j.RollingFileAppender">
                <param name="File" value="../logs/error.log" />
                <param name="MaxFileSize" value="1024KB"/>
                <param name="MaxBackupIndex" value="5"/>
                <layout class="org.apache.log4j.PatternLayout">
                        <param name="ConversionPattern" value="%d{yyyy.MM.dd HH:mm:ss} %c - %m%n" />
                </layout>
                <filter class="org.apache.log4j.varia.LevelRangeFilter">
                        <param name="LevelMin" value="error" />
                        <param name="AcceptOnMatch" value="true" />
                </filter>
        </appender>

        <!-- OF-506: Jetty INFO messages are generally not useful. Ignore them by default. -->
        <logger name="org.eclipse.jetty">
                <level value="warn" />
        </logger>

        <root>
                <level value="info" />
                <appender-ref ref="debug-out" />
                <appender-ref ref="info-out" />
                <appender-ref ref="warn-out" />
                <appender-ref ref="error-out" />
        </root>

</log4j:configuration>