1，centos7 使用 systemctl 替换了 service命令
查看全部服务命令：
systemctl list-unit-files --type service
查看服务
systemctl status name.service
启动服务
systemctl start name.service
停止服务
systemctl stop name.service
重启服务
systemctl restart name.service增加开机启动
systemctl enable name.service
删除开机启动
systemctl disable name.service
其中.service 可以省略。
添加环境变量：
## JAVA export JAVA_HOME=/usr/local/java/jdk export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar ## TOMCAT export CATALINA_HOME=/usr/local/tomcat ## PATH export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:$JAVA_HOME/bin:$CATALINA_HOME/bin
catalina.sh加载环境变量
head ./bin/catalina.sh
#!/bin/sh . /etc/profile # Licensed to the Apache Software Foundation (ASF) under one or more # contributor license agreements. See the NOTICE file distributed with # this work for additional information regarding copyright ownership. # The ASF licenses this file to You under the Apache License, Version 2.0
2，tomcat增加启动参数
tomcat 需要增加一个pid文件
在tomca/bin 目录下面，增加 setenv.sh 配置，添加可执行权限，catalina.sh启动的时候会调用，同时配置java内存参数，注意这里的pid文件路径要与systemctl脚本里的pid文件一致
#add tomcat pid CATALINA_PID="$CATALINA_HOME/tomcat.pid" #add java opts JAVA_OPTS="-server -XX:PermSize=256M -XX:MaxPermSize=1024m -Xms512M -Xmx1024M -XX:MaxNewSize=256m"
3，增加tomcat.service
在/usr/lib/systemd/system目录下增加tomcat.service，目录必须是绝对目录。
cat /usr/lib/systemd/system/tomcat.service
[Unit]
Description=Apache Tomcat Web Application Container
After=syslog.target network.target
[Service]
Type=forking
PIDFile=/usr/local/tomcat/tomcat.pid
ExecStart=/usr/local/tomcat/bin/catalina.sh start
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s QUIT $MAINPID
PrivateTmp=true
[Install]
WantedBy=multi-user.target
[unit]配置了服务的描述，规定了在network启动之后执行。[service]配置服务的pid，服务的启动，停止，重启。[install]配置了使用用户。
4，使用tomcat.service
配置开机启动
systemctl enable tomcat
启动tomcat
systemctl start tomcat
停止tomcat
systemctl stop tomcat
重启tomcat
systemctl restart tomcat
因为配置pid，在启动的时候会再tomcat根目录生成tomcat.pid文件，停止之后删除。
同时tomcat在启动时候，执行start不会启动两个tomcat，保证始终只有一个tomcat服务在运行。
多个tomcat可以配置在多个目录下，互不影响
# Systemd unit file for default tomcat # # To create clones of this service: # DO NOTHING, use tomcat@.service instead. [Unit] Description=Apache Tomcat Web Application Container After=syslog.target network.target [Service] Type=simple EnvironmentFile=/etc/tomcat/tomcat.conf Environment="NAME=" EnvironmentFile=-/etc/sysconfig/tomcat ExecStart=/usr/libexec/tomcat/server start SuccessExitStatus=143 User=tomcat Group=tomcat [Install] WantedBy=multi-user.target
grep -v "^#" /etc/tomcat/tomcat.conf
TOMCAT_CFG_LOADED="1" TOMCATS_BASE="/var/lib/tomcats/" JAVA_HOME="/usr/lib/jvm/jre" CATALINA_HOME="/usr/share/tomcat" CATALINA_TMPDIR="/var/cache/tomcat/temp" SECURITY_MANAGER="false"
cat /etc/sysconfig/tomcat # Service-specific configuration file for tomcat. This will be sourced by # the SysV init script after the global configuration file # /etc/tomcat/tomcat.conf, thus allowing values to be overridden in # a per-service manner. # # NEVER change the init script itself. To change values for all services make # your changes in /etc/tomcat/tomcat.conf # # To change values for a specific service make your edits here. # To create a new service create a link from /etc/init.d/<your new service> to # /etc/init.d/tomcat (do not copy the init script) and make a copy of the # /etc/sysconfig/tomcat file to /etc/sysconfig/<your new service> and change # the property values so the two services won't conflict. Register the new # service in the system as usual (see chkconfig and similars). # # Where your java installation lives #JAVA_HOME="/usr/lib/jvm/java" # Where your tomcat installation lives #CATALINA_BASE="/usr/share/tomcat" #CATALINA_HOME="/usr/share/tomcat" #JASPER_HOME="/usr/share/tomcat" #CATALINA_TMPDIR="/var/cache/tomcat/temp" # You can pass some parameters to java here if you wish to #JAVA_OPTS="-Xminf0.1 -Xmaxf0.3" # Use JAVA_OPTS to set java.library.path for libtcnative.so #JAVA_OPTS="-Djava.library.path=/usr/lib64" # What user should run tomcat #TOMCAT_USER="tomcat" # You can change your tomcat locale here #LANG="en_US" # Run tomcat under the Java Security Manager #SECURITY_MANAGER="false" # Time to wait in seconds, before killing process #SHUTDOWN_WAIT="30" # Whether to annoy the user with "attempting to shut down" messages or not #SHUTDOWN_VERBOSE="false" # Connector port is 8080 for this tomcat instance #CONNECTOR_PORT="8080" # If you wish to further customize your tomcat environment, # put your own definitions here # (i.e. LD_LIBRARY_PATH for some jdbc drivers)
cat /usr/libexec/tomcat/server #!/bin/bash . /usr/libexec/tomcat/preamble MAIN_CLASS=org.apache.catalina.startup.Bootstrap FLAGS="$JAVA_OPTS" OPTIONS="-Dcatalina.base=$CATALINA_BASE -Dcatalina.home=$CATALINA_HOME -Djava.endorsed.dirs=$JAVA_ENDORSED_DIRS -Djava.io.tmpdir=$CATALINA_TMPDIR -Djava.util.logging.config.file=${LOGGING_PROPERTIES} -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager" if [ "$1" = "start" ] ; then FLAGS="${FLAGS} $CATALINA_OPTS" if [ "${SECURITY_MANAGER}" = "true" ] ; then OPTIONS="${OPTIONS} -Djava.security.manager -Djava.security.policy==${CATALINA_BASE}/conf/catalina.policy" fi run start elif [ "$1" = "stop" ] ; then run stop fi