mongoDB – under SUSE SLE11 – SP3
Getting started with mongoDB under Suse Linux. Installation:
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zypper addrepo --no-gpgcheck http://repo.mongodb.org/zypper/suse/11/mongodb-org# sudo zypper install mongodb-org vi /etc/mongod.conf |
Note: Default port is 27017 Starting/Stopping mongoDB server:
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sudo service mongod start sudo service mongod stop |
Verify server status:
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tail -f /var/log/mongodb/mongod.log |
Make it part of the autostart for different run levels:
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sudo chkconfig mongod on |
Getting started with mongoDB
Read MoreHide/Show Desktop Icons on SUSE
Sometimes it is desirable to have a clean desktop. The following steps will allow you to achieve that with minimal commands.
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- open a terminal - type gconf-editor - navigate apps/nautilus/desktop - Select/De-select the items you want to display on the desktop. - Exit from there and you are done! |
LAMP – install on Ubuntu
Easiest way to install LAMP stack on Ubuntu servers
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sudo apt-get update sudo apt-get install lamp-server^ |
Yes the ^ is needed.
Read Moredummy sendmail
Lets say you are developing an app that sends mail, but you don’t want to actually send any mails out. The answer for your quest is “dummy sendmail”
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#!/bin/bash # replace the /usr/bin/sendail with this shell script. # Everytime someone sends a mail, the content of the mail will be written to a file under /tmp/mail.20150203.log TS=`date "+%Y%m%d"` FN="/tmp/mail.$TS.log" cat - >> $FN echo "=== End Of Message Received ===" >> $FN |
sudo config
sudo is a standard way to give users some administrative rights without giving out the root password. This can also be configured for non root users as well.
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vi /etc/sudoers and add the following line Syntax: user hosts = (runas) commands |
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# user john is allowed to run some_script.sh as jack with no password john ALL = (jack) NOPASSWD: /work/some_script.sh |
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# Any user part of the opsgrp will be allowed to mount and unmount squashfiles as root with no password. User_Alias OPSACC = %opsgrp OPSACC ALL = (root) NOPASSWD: /bin/mount -t squashfs -o loop *, /bin/umount -t squashfs * |
sftp only access (no shell access)
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groupadd sftponly_group useradd -d /home/sftp_dir/ -g sftponly_group -s /bin/false sftp_user |
Add the following lines to /etc/ssh/sshd_config
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Match Group sftponly_group ChrootDirectory %h AllowTcpForwarding no X11Forwarding no ForceCommand internal-sftp -l INFO -f AUTH |
Make sure to restart sshd daemon.
Read MoreChange the default editor
I ran into this with CentOS 5. Where the default editor for the system is set to nano! I like vi and wanted to change the default to it. login to the system vi .bashrc Add the following two lines to .bashrc
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export EDITOR="vim" export VISUAL="vim" |
run the command, source .bashrc A change to /etc/bashrc will make it a system wide change
Read MoreVirtualbox dhcp set
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VBoxManage.exe dhcpserver add --ip 10.0.7.1 --netmask 255.255.255.0 --lowerip 10.0.7.2 --upperip 10.0.7.10 --enable --netname intnet |
Simple all mail relay
You have a server who’s IP is already white listed on your mail server & you wanted this server to pass all outgoing mails to the company’s mail server. This method basically eliminates the need for a mail server to be running on the local box.
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- vi /etc/mail.rc and add the following line to it. set your.valid.mail.com |