Reprinted from: https://blog.bbzhh.com/index.php/archives/134.html
Just using apt-get and apt-fast to install software will report an error and the installation will fail!
I wrote a tomcat boot-up self-starting script, and the execution is no problem, but when installing mysql, there are a lot of:
insserv: warning: script 'S20tomcat' missing LSB tags and overrides
insserv: warning: script 'tomcat' missing LSB tags and overrides
insserv: There is a loop at service rmnologin if started
insserv: There is a loop between service rmnologin and mountnfs if started
insserv: loop involving service mountnfs at depth 6
insserv: loop involving service networking at depth 5
insserv: There is a loop between service tomcat and hwclock if started
insserv: loop involving service hwclock at depth 3
insserv: loop involving service mountdevsubfs at depth 2
insserv: There is a loop between service tomcat and udev if started
insserv: loop involving service udev at depth 1
insserv: Starting tomcat depends on rmnologin and therefore on system facility `$all' which can not be true!
insserv: Starting tomcat depends on rmnologin and therefore on system facility `$all' which can not be true!
insserv: Starting tomcat depends on rmnologin and therefore on system facility `$all' which can not be true!
insserv: Starting tomcat depends on rmnologin and therefore on system facility `$all' which can not be true!
insserv: Starting tomcat depends on rmnologin and therefore on system facility `$all' which can not be true!
insserv: Starting tomcat depends on rmnologin and therefore on system facility `$all' which can not be true!
insserv: Starting tomcat depends on rmnologin and therefore on system facility `$all' which can not be true!
insserv: Starting tomcat depends on rmnologin and therefore on system facility `$all' which can not be true!
insserv: Starting tomcat depends on rmnologin and therefore on system facility `$all' which can not be true!
insserv: Starting tomcat depends on rmnologin and therefore on system facility `$all' which can not be true!
insserv: Starting tomcat depends on rmnologin and therefore on system facility `$all' which can not be true!It also caused the automatic configuration prompt after mysql installation to fail. According to the LSB tags specification, the script was rewritten as follows (debian8 environment):
#!/bin/bash
### BEGIN INIT INFO
# Provides: bbzhh.com
# Required-Start: $local_fs $network
# Required-Stop: $local_fs
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: tomcat service
# Description: tomcat service daemon
### END INIT INFO
#
# description: Apache Tomcat init script
# processname: tomcat
# chkconfig: 234 20 80
#
#
# Copyright (C) 2014 Miglen Evlogiev
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>.
#
# Initially forked from: gist.github.com/valotas/1000094
# Source: gist.github.com/miglen/5590986
#Location of JAVA_HOME (bin files)
export JAVA_HOME=/opt/jdk
#Add Java binary files to PATH
export PATH=$JAVA_HOME</span>/bin:<span class="variable">$PATH
#CATALINA_HOME is the location of the bin files of Tomcat
export CATALINA_HOME=/opt/tomcat
#CATALINA_BASE is the location of the configuration files of this instance of Tomcat
export CATALINA_BASE=/opt/tomcat
export CATALINA_BOOTSTRAP=/opt/tomcat/bin/bootstrap.jar
#TOMCAT_USER is the default user of tomcat
export TOMCAT_USER=tomcat
#TOMCAT_USAGE is the message if this script is called without any options
TOMCAT_USAGE="Usage: $0 {\e[00;32mstart\e[00m|\e[00;31mstop\e[00m|\e[00;31mkill\e[00m|\e[00;32mstatus\e[00m|\e[00;31mrestart\e[00m}"
#SHUTDOWN_WAIT is wait time in seconds for java proccess to stop
SHUTDOWN_WAIT=20
tomcat_pid() {
echo `ps -fe | grep $CATALINA_BOOTSTRAP | grep -v grep | tr -s " "|cut -d" " -f2`
}
start() {
pid=$(tomcat_pid)
if [ -n "$pid" ]
then
echo -e "\e[00;31mTomcat is already running (pid: $pid)\e[00m"
else
# Start tomcat
echo -e "\e[00;32mStarting tomcat\e[00m"
#ulimit -n 100000
#umask 007
#/bin/su -p -s /bin/sh $TOMCAT_USER
if [ `user_exists $TOMCAT_USER` = "1" ]
then
/bin/su $TOMCAT_USER</span> -c <span class="variable">$CATALINA_HOME/bin/startup.sh
else
echo -e "\e[00;31mTomcat user $TOMCAT_USER</span> does not exists. Starting with <span class="variable">$(id)\e[00m"
sh $CATALINA_HOME/bin/startup.sh
fi
status
fi
return 0
}
status(){
pid=$(tomcat_pid)
if [ -n "$pid" ]
then echo -e "\e[00;32mTomcat is running with pid: $pid\e[00m"
else
echo -e "\e[00;31mTomcat is not running\e[00m"
return 3
fi
}
terminate() {
echo -e "\e[00;31mTerminating Tomcat\e[00m"
kill -9 $(tomcat_pid)
}
stop() {
pid=$(tomcat_pid)
if [ -n "$pid" ]
then
echo -e "\e[00;31mStoping Tomcat\e[00m"
#/bin/su -p -s /bin/sh $TOMCAT_USER
sh $CATALINA_HOME/bin/shutdown.sh
let kwait=$SHUTDOWN_WAIT
count=0;
until [ `ps -p $pid | grep -c $pid` = '0' ] || [ $count</span> <span class="operator">-gt</span> <span class="variable">$kwait ]
do
echo -n -e "\n\e[00;31mwaiting for processes to exit\e[00m";
sleep 1
let count=$count+1;
done
if [ $count</span> <span class="operator">-gt</span> <span class="variable">$kwait ]; then
echo -n -e "\n\e[00;31mkilling processes didn't stop after $SHUTDOWN_WAIT seconds\e[00m"
terminate
fi
else
echo -e "\e[00;31mTomcat is not running\e[00m"
fi
return 0
}
user_exists(){
if id -u $1 >/dev/null 2>&1; then
echo "1"
else
echo "0"
fi
}
case $1 in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
status)
status
exit $?
;;
kill)
terminate
;;
*)
echo -e $TOMCAT_USAGE
;;
esac
exit 0
In fact, the solution is to add below #!/bin/bash:
### BEGIN INIT INFO
# Provides: bbzhh.com
# Required-Start: $local_fs $network
# Required-Stop: $local_fs
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: tomcat service
# Description: tomcat service daemon
### END INIT INFOOf course, you can also do it once and for all:
apt-get remove insservThe startup script file is placed in the /etc/init.d/ folder, and the file name is the name of the service that reports the error. I reported tomcat8, which was installed according to someone else's tutorial. It seems that even if I follow the tutorial, it may not be wrong.
(PS: I still recommend not to take the so-called once-and-for-all method, or it is safer to change the above files. Anyway, I succeeded according to the above, and the once-and-for-all method was unsuccessful, but there were other problems.)