ming

2015/11/13

Make CentOS 6 as template

echo "Clean system"
/sbin/service rsyslog stop
/sbin/service auditd stop
/usr/bin/package-cleanup --oldkernels --count=1 -y
/usr/bin/yum clean all -y
/usr/sbin/logrotate -f /etc/logrotate.conf
/bin/rm -f /var/log/*-???????? /var/log/*.gz
/bin/rm -f /var/log/dmesg.old
/bin/rm -rf /var/log/anaconda
/bin/cat /dev/null > /var/log/audit/audit.log
/bin/cat /dev/null > /var/log/wtmp
/bin/cat /dev/null > /var/log/lastlog
/bin/cat /dev/null > /var/log/grubby
/bin/rm -f /etc/udev/rules.d/70*
/bin/sed -i '/^HWADDR=/d' /etc/sysconfig/network-scripts/ifcfg-eth0
/bin/sed -i '/^UUID=/d' /etc/sysconfig/network-scripts/ifcfg-eth0
/bin/rm -rf /tmp/*
/bin/rm -rf /var/tmp/*
/bin/rm -f /etc/ssh/*key*
/bin/rm -f ~root/.bash_history
unset HISTFILE
/bin/rm -rf ~root/.ssh/
/bin/rm -f ~root/anaconda-ks.cfg

2015/11/11

CentOS 6 install ClamAV via yum

yum -y install epel-release
yum -y install clamav clamd
# setup & start
chkconfig clamd on
service clamd start
# update
/usr/bin/freshclam
# auto update 
echo '#!/bin/bash' >> /etc/cron.hourly/update
echo '/usr/bin/freshclam' >> /etc/cron.hourly/update
chmod +x /etc/cron.hourly/update
# daily scan
echo '#!/bin/bash' >> /etc/cron.daily/manual_clamscan
echo 'SCAN_DIR="/" ' >> /etc/cron.daily/manual_clamscan
echo 'LOG_FILE="/var/log/clamav/manual_clamscan.log" ' >> /etc/cron.daily/manual_clamscan
echo '/usr/bin/clamscan -i -r $SCAN_DIR >> $LOG_FILE ' >> /etc/cron.daily/manual_clamscan
chmod +x /etc/cron.daily/manual_clamscan

2015/04/16

Cisco Switch Port Mirror setting

monitor session 1 source interface Gi0/2 - 4
monitor session 1 destination interface Gi0/7

SJ2000 time setup

add text file and rename as time.txt

add date and time with this format
Note: there has a space between data and time .

2014.05.07 09:26:00

2015/03/17

vsftp install on CentOS 7

# install on CentOS 7 without iptables and seLinux

# install something we need
 
yum install vsftpd gcc pam-devel unzip php -y 
 
# Setup for virtual user 
 
curl 'https://codeload.github.com/tiwe-de/libpam-pwdfile/zip/master' > master.zip

unzip master.zip

cd libpam-pwdfile-master/

make

cp pam_pwdfile.so /lib64/security/
mv /etc/pam.d/vsftpd /etc/pam.d/vsftpd.org
echo "auth required /lib64/security/pam_pwdfile.so pwdfile  /etc/vsftpd/users" "" >> /etc/pam.d/vsftpd 
echo  "account required /lib64/security/pam_permit.so" "" >>  /etc/pam.d/vsftpd 


# backup config
mv /etc/vsftpd/vsftpd.conf /etc/vsftpd/vsftpd.conf.org


# Setup vsftpd main config

echo "local_umask=022" >> /etc/vsftpd/vsftpd.conf
echo "anonymous_enable=NO" >> /etc/vsftpd/vsftpd.conf
echo "local_enable=YES" >> /etc/vsftpd/vsftpd.conf
echo "virtual_use_local_privs=YES" >> /etc/vsftpd/vsftpd.conf
echo "write_enable=YES" >> /etc/vsftpd/vsftpd.conf
echo "connect_from_port_20=YES" >> /etc/vsftpd/vsftpd.conf
echo "secure_chroot_dir=/var/run/vsftpd" >> /etc/vsftpd/vsftpd.conf
echo "pam_service_name=vsftpd" >> /etc/vsftpd/vsftpd.conf
echo "guest_enable=YES" >> /etc/vsftpd/vsftpd.conf
echo "user_sub_token=$USER" >> /etc/vsftpd/vsftpd.conf
echo "local_root=/data/ftp/$USER" >> /etc/vsftpd/vsftpd.conf
echo "chroot_local_user=YES" >> /etc/vsftpd/vsftpd.conf
echo "hide_ids=YES" >> /etc/vsftpd/vsftpd.conf
echo "user_config_dir=/etc/vsftpd/user_config" >> /etc/vsftpd/vsftpd.conf
echo "allow_writeable_chroot=YES" >> /etc/vsftpd/vsftpd.conf

# Setup up for vsftpd running folder

mkdir -p /var/run/vsftpd

mkdir -p /etc/vsftpd/user_config

# Setup up for ftp user

mkdir -p /ftp/users

chown -Rf ftp:ftp /ftp/users

# Note: this command must turn on "short tag"
sed -i "s/short_open_tag = .*/short_open_tag = On/" /etc/php.ini
# ftp user config
mkdir -p /etc/vsftpd/user_config/

# ftp user account add
echo "<?php echo 'username:' . crypt('passwd'); ?>"| php >> /etc/vsftpd/users
echo "" >> /etc/vsftpd/users
echo "local_root=/ftp/users/username_home""" >> /etc/vsftpd/user_config/username

# Create ftp user home
mkdir -p /ftp/users/username_home
chown -Rf ftp:ftp /ftp/users/username_home

# setup
systemctl enable vsftpd.service
systemctl start vsftpd.service

#BTW...... add ftp user shell

echo "<?php echo '$1:' . crypt('$2'); ?>"| php >> /etc/vsftpd/users
echo "" >> /etc/vsftpd/users
#mkdir -p /etc/vsftpd/user_config/
echo "local_root=/ftp/users/$1" "" >> /etc/vsftpd/user_config/$1
mkdir -p /ftp/users/$1

chown -Rf ftp:ftp /ftp/users/$1

firewall-cmd --permanent --add-port=21/tcp

firewall-cmd --permanent --add-service=ftp
Restart firewall:firewall-cmd --reload

2015/03/13

CentOS 7 Samba 4 Clamav

# install Centos 7
# update os

yum -y update
yum install samba samba-common

mv /etc/samba/smb.conf /etc/samba/smb.conf.org
cat /etc/samba/smb.conf.org |grep -v '#' | grep -v ';'|grep -v '^$' > /etc/samba/smb.conf

vi /etc/samba/smb.conf

[global]
workgroup = MYGROUP
server string = Samba Server Version %v
log file = /var/log/samba/log.%m
max log size = 50
security = user
map to guest = Bad User
load printers = no

[ftp_upload]
comment = FTP upload
path = /ftp
browseable = yes
writable = yes
public = yes
readonly = no

systemctl enable smb.service
systemctl enable nmb.service
systemctl restart smb.service
systemctl restart nmb.service
firewall-cmd --permanent --zone=public --add-service=samba
firewall-cmd --reload

--

# install clamav

vi /etc/yum.repos.d/dag.repo

[dag]

name=Dag RPM Repository for Red Hat Enterprise Linux
baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag/
gpgcheck=1
gpgkey=http://dag.wieers.com/packages/RPM-GPG-KEY.dag.txt
enabled=1

yum install clamd
# Update virus database
freshclam
systemctl enable clamd.service

2015/02/11

My ABP list (Ad Block Plus)

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2015/02/05

MySQL Backup / mysqldump

-- 備份某個資料庫

# mysqldump -u root -p db > db.sql;

-- 備份資料庫中的某個資料表

# mysqldump -u root -p db table > backup.sql;

-- 備份所有資料庫

# mysqldump -u root -p --all-databases > backup.sql;

-- 復原一個資料庫 (需先建好db_name 這個資料庫, 若沒建立請先執行 mysqladmin create db_name 建立即可)

# mysql -u root -p db < backup.sql

-- 復原多個資料庫 ( 因為backup.sql 內已有 CREATE DATABASE指令,因此不需先建DB)

# mysql -u root -p < backup.sql

注意:
因為新版mysqldump預設會使用UTF8,所以還原較沒問題, 若為舊版的mysqldump, 則需要使用--default-character-set 指定字集

# mysql -u root -p --default-character-set=latin1 db_name < backup.sql
只輸出MySQL DB Schema

mysqldump 資料庫名稱 --no-data > 輸出檔名

2014/12/01

Nagios monitor ESX server

1.install vSphere Perl SDK for vSphere
http://communities.vmware.com/community/developer/forums/vsphere_sdk_perl

2.download perl
http://exchange.nagios.org/directory/Plugins/Operating-Systems/*-Virtual-Environments/VMWare/Vmware-ESX-%26-VM-host/details

3./check_esx3.pl -D 192.168.1.1 -u root -p password -l vmfs

/check_esx3.pl --help
check_esx3.pl 0.5.0

This nagios plugin is free software, and comes with ABSOLUTELY NO WARRANTY.
It may be used, redistributed and/or modified under the terms of the GNU
General Public Licence (see http://www.fsf.org/licensing/licenses/gpl.txt).

VMWare Infrastructure plugin

Usage: check_esx3.pl -D | -H [ -N ]
-u -p | -f
-l [ -s ]
[ -x ] [ -o ]
[ -t ] [ -w ] [ -c ]
[ -V ] [ -h ]

-?, --usage
Print usage information
-h, --help
Print detailed help screen
-V, --version
Print version information
--extra-opts=[section][@file]
Read options from an ini file. See http://nagiosplugins.org/extra-opts
for usage and examples.
-H, --host=
ESX or ESXi hostname.
-C, --cluster=
ESX or ESXi clustername.
-D, --datacenter=
Datacenter hostname.
-N, --name=
Virtual machine name.
-u, --username=
Username to connect with.
-p, --password=
Password to use with the username.
-f, --authfile=
Authentication file with login and password. File syntax :
username=
password=
-w, --warning=THRESHOLD
Warning threshold. See
http://nagiosplug.sourceforge.net/developer-guidelines.html#THRESHOLDFORMAT
for the threshold format.
-c, --critical=THRESHOLD
Critical threshold. See
http://nagiosplug.sourceforge.net/developer-guidelines.html#THRESHOLDFORMAT
for the threshold format.
-l, --command=COMMAND
Specify command type (CPU, MEM, NET, IO, VMFS, RUNTIME, ...)
-s, --subcommand=SUBCOMMAND
Specify subcommand
-S, --sessionfile=SESSIONFILE
Specify a filename to store sessions for faster authentication
-x, --exclude=
Specify black list
-o, --options=
Specify additional command options
-t, --timeout=INTEGER
Seconds before plugin times out (default: 30)
-v, --verbose
Show details for command-line debugging (can repeat up to 3 times)
Supported commands(^ means blank or not specified parameter) :
Common options for VM, Host and DC :
* cpu - shows cpu info
+ usage - CPU usage in percentage
+ usagemhz - CPU usage in MHz
^ all cpu info
* mem - shows mem info
+ usage - mem usage in percentage
+ usagemb - mem usage in MB
+ swap - swap mem usage in MB
+ overhead - additional mem used by VM Server in MB
+ overall - overall mem used by VM Server in MB
+ memctl - mem used by VM memory control driver(vmmemctl) that controls ballooning
^ all mem info
* net - shows net info
+ usage - overall network usage in KBps(Kilobytes per Second)
+ receive - receive in KBps(Kilobytes per Second)
+ send - send in KBps(Kilobytes per Second)
^ all net info
* io - shows disk io info
+ read - read latency in ms (totalReadLatency.average)
+ write - write latency in ms (totalWriteLatency.average)
^ all disk io info
* runtime - shows runtime info
+ status - overall host status (gray/green/red/yellow)
+ issues - all issues for the host
^ all runtime info
VM specific :
* cpu - shows cpu info
+ wait - CPU wait time in ms
+ ready - CPU ready time in ms
* mem - shows mem info
+ swapin - swapin mem usage in MB
+ swapout - swapout mem usage in MB
+ active - active mem usage in MB
* io - shows disk I/O info
+ usage - overall disk usage in MB/s
* runtime - shows runtime info
+ con - connection state
+ cpu - allocated CPU in MHz
+ mem - allocated mem in MB
+ state - virtual machine state (UP, DOWN, SUSPENDED)
+ consoleconnections - console connections to VM
+ guest - guest OS status, needs VMware Tools
+ tools - VMWare Tools status
Host specific :
* net - shows net info
+ nic - makes sure all active NICs are plugged in
* io - shows disk io info
+ aborted - aborted commands count
+ resets - bus resets count
+ kernel - kernel latency in ms
+ device - device latency in ms
+ queue - queue latency in ms
* vmfs - shows Datastore info
+ (name) - free space info for datastore with name (name)
^ all datastore info
* runtime - shows runtime info
+ con - connection state
+ health - checks cpu/storage/memory/sensor status
+ maintenance - shows whether host is in maintenance mode
+ list(vm) - list of VMWare machines and their statuses
* service - shows Host service info
+ (names) - check the state of one or several services specified by (names), syntax for (names):,,...,
^ show all services
* storage - shows Host storage info
+ adapter - list bus adapters
+ lun - list SCSI logical units
+ path - list logical unit paths
DC specific :
* io - shows disk io info
+ aborted - aborted commands count
+ resets - bus resets count
+ kernel - kernel latency in ms
+ device - device latency in ms
+ queue - queue latency in ms
* vmfs - shows Datastore info
+ (name) - free space info for datastore with name (name)
^ all datastore info
* runtime - shows runtime info
+ list(vm) - list of VMWare machines and their statuses
+ listhost - list of VMWare esx host servers and their statuses
+ tools - VMWare Tools status
* recommendations - shows recommendations for cluster
+ (name) - recommendations for cluster with name (name)
^ all clusters recommendations

2014/11/06

ESXi 5.x snmp setting

0. download and install VMware vSphere CLI 5.0 and turn on cmd

1.

cd "C:\Program Files (x86)\VMware\VMware vSphere CLI\bin\"

2.

vicfg-snmp.pl --server 192.168.200.212 --username root --password password --c public

3.

vicfg-snmp.pl --server 192.168.200.212 --username root --password password --enable

4.

vicfg-snmp.pl --server 192.168.200.212 --username root --password password --show