Apache Start .sh script - apache

#!/bin/bash
# Apache Process Monitor
# Restart Apache Web Server When It Goes Down
# -------------------------------------------------------------------------
# Copyright (c) 2003 nixCraft project <http://cyberciti.biz/fb/>
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------
# RHEL / CentOS / Fedora Linux restart command
RESTART="/sbin/service httpd restart"
# uncomment if you are using Debian / Ubuntu Linux
#RESTART="/etc/init.d/apache2 restart"
#path to pgrep command
PGREP="pgrep"
# Httpd daemon name,
# Under RHEL/CentOS/Fedora it is httpd
# Under Debian 4.x it is apache2
HTTPD="httpd"
# find httpd pid
$PGREP ${HTTPD}
if [ $? -ne 0 ] # if apache not running
then
# restart apache
$RESTART
fi
exit
this is my script. when i run it i get
: command not foundin/apache_start.sh: line 12:
: command not foundin/apache_start.sh: line 22: pgrep
/usr/local/apache/bin/apache_start.sh: line 29: syntax error: unexpected end of file
what mistake i made. i would be very happy if anybody answer me.

dude, I ran your script and it works fine except the $PGREP ${HTTPD} part, if you want to get a pid why don't you use "pidof" command, and I think in your if statement you are testing the return value of grep, not httpd command(not sure). anyway did you edit this script in word document or in an editor, cause you know this may add some invisible characters to your code.
to debug it, I suggest that you comment out rest of your code where you get the first error and see figure out the solution to that specific error.

Related

While starting apache with apachectl facing issue

When i am trying to start or stop apache with the command
/ebiz/apache/httpd/sbin/apachectl -k stop -f /ebiz/apache/httpd/conf/httpd.conf
Getting this error:-
/ebiz/apache/httpd/sbin/apachectl: line 122: ./httpd: No such file or directory
But when i am trying to execute same command from sbin location it is working fine. I am placing my apache in custom location and my apachectl is in "/ebiz/apache/httpd/sbin" location and httpd.conf is in "/ebiz/apache/httpd/conf/" location
If i look my apachectl file
#!/bin/sh
#
# 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
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#
# Apache control script designed to allow an easy command line interface
# to controlling Apache. Written by Marc Slemko, 1997/08/23
#
# The exit codes returned are:
# XXX this doc is no longer correct now that the interesting
# XXX functions are handled by httpd
# 0 - operation completed successfully
# 1 -
# 2 - usage error
# 3 - httpd could not be started
# 4 - httpd could not be stopped
# 5 - httpd could not be started during a restart
# 6 - httpd could not be restarted during a restart
# 7 - httpd could not be restarted during a graceful restart
# 8 - configuration syntax error
#
# When multiple arguments are given, only the error from the _last_
# one is reported. Run "apachectl help" for usage info
#
ACMD="$1"
ARGV="$#"
#
# |||||||||||||||||||| START CONFIGURATION SECTION ||||||||||||||||||||
# -------------------- --------------------
#
# the path to your httpd binary, including options if necessary
HTTPD='./httpd'
#
#
# a command that outputs a formatted text version of the HTML at the
# url given on the command line. Designed for lynx, however other
# programs may work.
if [ -x "/usr/bin/links" ]; then
LYNX="/usr/bin/links -dump"
else
LYNX=none
fi
#
# the URL to your server's mod_status status page. If you do not
# have one, then status and fullstatus will not work.
STATUSURL="http://localhost:80/server-status"
#
# Set this variable to a command that increases the maximum
# number of file descriptors allowed per child process. This is
# critical for configurations that use many file descriptors,
# such as mass vhosting, or a multithreaded server.
ULIMIT_MAX_FILES="ulimit -S -n `ulimit -H -n`"
# -------------------- --------------------
# |||||||||||||||||||| END CONFIGURATION SECTION ||||||||||||||||||||
# Set the maximum number of file descriptors allowed per child process.
if [ "x$ULIMIT_MAX_FILES" != "x" ] ; then
$ULIMIT_MAX_FILES
fi
ERROR=0
if [ "x$ARGV" = "x" ] ; then
ARGV="-h"
fi
function checklynx() {
if [ "$LYNX" = "none" ]; then
echo "The 'links' package is required for this functionality."
exit 8
fi
}
function testconfig() {
# httpd is denied terminal access in SELinux, so run in the
# current context to get stdout from $HTTPD -t.
if test -x /usr/sbin/selinuxenabled && /usr/sbin/selinuxenabled; then
runcon -- `id -Z` $HTTPD $OPTIONS -t
else
$HTTPD $OPTIONS -t
fi
ERROR=$?
}
case $ACMD in
start|stop|restart|graceful|graceful-stop)
$HTTPD $OPTIONS -k $ARGV
ERROR=$?
;;
startssl|sslstart|start-SSL)
echo The startssl option is no longer supported.
echo Please edit httpd.conf to include the SSL configuration settings
echo and then use "apachectl start".
ERROR=2
;;
configtest)
testconfig
;;
status)
checklynx
$LYNX $STATUSURL | awk ' /process$/ { print; exit } { print } '
;;
fullstatus)
checklynx
$LYNX $STATUSURL
;;
*)
$HTTPD $OPTIONS "$#"
ERROR=$?
esac
exit $ERROR
On the line number 122 it is looking for this "$HTTPD $OPTIONS "$#"". How i can execute apache from anywhere
You can see that the path to httpd is hardcoded to the relative path ./httpd in apachectl:
# the path to your httpd binary, including options if necessary
HTTPD='./httpd'
which points to the wrong location if you're not in the right working directory.
It should be sufficient to change the path to the absolute path to the binary, i.e.
# the path to your httpd binary, including options if necessary
HTTPD=/ebiz/apache/httpd/sbin/httpd

How do I check the apache config for validity in Red Hat Linux?

My operating system is Red Hat Enterprise Linux 7. This isn't working...
# httpd -t
bash: httpd: command not found
In case it helps, this is the command I run to restart apache on this box...
# systemctl restart httpd24-httpd
But this doesn't work...
# httpd24-httpd -t
bash: httpd24-httpd: command not found
This doesn't work either...
# apachectl -t
bash: apachetl: command not found
Nor does this work...
# apachectl configtest
bash: apachetl: command not found
I know this is a couple months old but ended up here. I ran into the same issue initially, hence why I am here. I found that the location for the new httpd24-httpd wasn't in my env path to execute. While I could added it there, I found the command location and was able to execute.
How I found the command:
sudo find / -name apachectl
The output of the command:
/opt/rh/httpd24/root/usr/sbin/apachectl
Executed the command:
sudo /opt/rh/httpd24/root/usr/sbin/apachectl
Turns out I have to fix my configuration.
httpd: Syntax error on line 56 of /opt/rh/httpd24/root/etc/httpd/conf/httpd.conf: Syntax error on line 40 of /opt/rh/httpd24/root/etc/httpd/conf.modules.d/00-base.conf: Cannot load modules/mod_http2.so into server: libnghttp2-httpd24.so.14: cannot open shared object file: No such file or directory
Interesting that this came up for me, as I've not done anything with the configuration in this regard.
Here's the version I am running.
sudo /opt/rh/httpd24/root/usr/sbin/apachectl -v
Server version: Apache/2.4.34 (Red Hat)
Server built: Mar 17 2020 09:34:59
All the best!
Found something more for this as well from an old bug submitted to Redhat
Bug 1329639
Comment 10
scl enable httpd24 -- /opt/rh/httpd24/root/usr/sbin/apachectl configtest

Docker/Compose: Define and use env variable

on my github i'm creating a little fork from a debian minimal docker image. Its actually 5 packages which build up on previous:
debian-base-minimal
debian-base-standard
debian-base-security
debian-base-apache
debian-base-apache-php
On debian-base-apache i want to get a working env variable, which i can define later in docker-compose file. What should the env do?
Its should, if defined over docker-compose, write ServerName $SERVER_NAME at the end of /etc/apache2/apache2.conf to set a globally Server Name. If empty, no new line should be written.
But why its should write nothing when its empty? Cauz on build the Dockerfile to an image shouldnt include the SERVER_NAME.
I already tried something like:
echo "ServerName $SERVER_NAME" >> /etc/apache2/apache2.conf
on my 040-debian-base-apache file. But on build its wrote ServerName in, cauz i didnt defined a value and its using null. If i set a default in Dockerfile (ENV SERVER_NAME=127.0.0.1) its build the image with 127.0.0.1 and i cant change 127.0.0.1 via variable, cauz the variable already filled in with the value.
On ouput of the building with defined ENV SERVER_NAME=127.0.0.1 in Dockerfile (actually not in repo):
[...]
+ echo 'ServerName 127.0.0.1'
+ /etc/init.d/apache2 stop
Stopping Apache httpd web server: apache2.
ok.
+ /etc/init.d/apache2 start
Starting Apache httpd web server: apache2.
ok.
[...]
Its would be okay, if there stands default 127.0.0.1 cauz the apache can start. But i cant define it now in docker-compose.yml cauz its hardcoded 127.0.0.1 and not the output of a variable.
On ouput of the building with none defined ENV in Dockerfile (actually repo version):
[...]
+ echo 'ServerName '
+ /etc/init.d/apache2 stop
Stopping Apache httpd web server: apache2.
+ /etc/init.d/apache2 start
Starting Apache httpd web server: apache2 failed!
The apache2 configtest failed. ... (warning).
Output of config test was:
AH00526: Syntax error on line 228 of /etc/apache2/apache2.conf:
ServerName takes one argument, The hostname and port of the server
[...]
Can anybody help me to get this working? Would be nice to understand how it works.
Many thanks in advance.
As you've observed, every RUN command in the Dockerfile happens at docker build time, and in particular the contents of the file will be fixed based on what the environment variable was when you ran the build. You want it to change based on the runtime value of the variable, which means you need to write a script that runs at startup to do this.
A typical approach is to write an ENTRYPOINT script that does the first-time setup. The ENTRYPOINT gets passed the CMD (or whatever command got passed into docker run) as command-line arguments, so if it ends with exec "$#", the last thing it does is launch the "normal" command. You can use any ordinary shell script logic here, so I might write
#!/bin/sh
if [ -n "$SERVER_NAME" ]; then
echo "ServerName $SERVER_NAME" >> /etc/apache2/apache2.conf
fi
exec "$#"
Then you can provide this in your Dockerfile
COPY entrypoint.sh /
RUN chmod +x /entrypoint.sh
ENTRYPOINT ["/entrypoint.sh"]
CMD ["apachectl", "-DFOREGROUND"]
(The chmod isn't necessary if you can guarantee the file has execute permissions on your non-Windows host. The ENTRYPOINT must use the JSON-ish form. If you have another image that builds on top of this, remember that the combined image gets only one ENTRYPOINT and one CMD; the very deep stack of images you suggest is a pretty unusual setup.)

restart Apache when down centos 6

I need shell script to restart HTTPD when down. I was search on web found some script but its not working showing syntax error.
#!/bin/bash
RESTART="/sbin/service httpd restart"
PGREP="/usr/bin/pgrep"
HTTPD="httpd"
$PGREP ${HTTPD}
if [ $? -ne 0 ] # if apache not running
then
# restart apache
$RESTART
fi
and when i run this script its showing error
[root#vmi194867 pydash]# bash -x /scripts/httpd.sh
: No such file or directory/usr/bin/pgrep // path is correct
/scripts/httpd.sh: line 10: syntax error near unexpected token `fi'
/scripts/httpd.sh: line 10: `fi'

httpd does not work (-bash: httpd: command not found)

I am on someone else's linux server (shared hosting). I do not have root access. I have determined that it's a Redhat 4.1.2-46 running as Centos Release 5.9(Final).
I have the database dump for the site and the .php files from public_html as well. What I'm TRYING TO DO is locate the httpd.conf file and get the config for that site.
when I type in
httpd - v
I get -bas: httpd: command not found - even in like the /user/sbin directory - and it's clearly running and there.
Bottom line I can't find the sitedef/conf file for www.thisparticularsite.com - and can't even figure out what version of apache I'm running...
For Apache 2 try apache2ctl -v (or sudo apache2ctl -v if root access is available). I'm on a Raspberry Pi 4B running Debian, just for reference.
The init files of apache are usually located in /etc/init.d the httpd path are found in it. However, You can find out where the httpd.conf file and httpd command directory by doing a ps aux|grep -i http. For example:
ps aux|grep -i http
510 2594 0.0 0.0 77256 1516 ? S Jul02 0:00 **/usr/sbin/httpd-0.0.0.0_80** -k start -f **/etc/httpd/conf/instances/httpd-0.0.0.0_80/httpd.conf**
root 5470 0.0 0.0 77120 872 ? Ss 2013 22:13 **/usr/sbin/httpd-0.0.0.0_80** -k start -f **/etc/httpd/conf/instances/httpd-0.0.0.0_80/httpd.conf**
Conclusion:
httpd.conf file path: **/etc/httpd/conf/instances/httpd-0.0.0.0_80/httpd.conf**
httpd command directory: **/usr/sbin/httpd-0.0.0.0_80**
As mentionned by apache.org, httpd command should not be invoked directly.
see source
If you're trying to find loaded modules, earlier the command was httpd -l. But it'll give you the same error, Command 'httpd' not found,
Nowadays, you can use apache2 -l (tested on Apache/2.4.29).