Linux to implement SNMP one-click Install shell script _linux Shell

Net-snmp is a free, open source SNMP implementation, formerly known as UCD-SNMP. Many SNMP are used after its installation, as a monitoring treasure and Aliyun system information monitoring. Let's share the Linux shell script that implements SNMP one-click installation:

#!/usr/bin/env bash
export LC_ALL=C
if [ "$(id -u)" != "0" ]
Then
echo "This script. must be run as root" 1>&2
Exit 1
Fi
####check if gcc perl perl-devel(centos) or libperl-dev(ubuntu) exists,
APT_CMD=`whereis apt-get|awk '{print $2}'`
YUM_CMD=`whereis yum|awk '{print $2}'`
if [ "$APT_CMD"x != ""x ]
Then
echo "$APT_CMD"
cmd=`dpkg -l|grep gcc`
if [ "$cmd"x = ""x ]
Then
apt-get install -y gcc 
Fi
cmd=`dpkg -l|grep perl`
if [ "$cmd"x = ""x ]
Then
apt-get install -y perl 
Fi
cmd=`dpkg -l|grep "libperl-dev"`
if [ "$cmd"x = ""x ]
Then
apt-get install -y libperl-dev 
Fi
elif [ "$YUM_CMD"x != ""x ]
Then
echo $YUM_CMD
cmd=`rpm -q gcc|grep -v "not installed"`
if [ "$cmd"x = ""x ]
Then
yum install gcc -y 1>/dev/null 2>&1
Fi
cmd=`rpm -q perl|grep -v "not installed"`
if [ "$cmd"x = ""x ]
Then
yum install -y perl 1>/dev/null 2>&1
Fi
cmd=`rpm -q perl-devel|grep -v "not installed"`
if [ "$cmd"x = ""x ]
Then
yum install -y perl-devel 1>/devel/null 2>&1
Fi
Else
echo "your release have no yum or apt-get"
Fi
function Usage()
{
Echo "is used as follows: (Note: the password of version 2C must be greater than 6 bits, and that of version 3 must be greater than 8 bits)";
Echo ""
Echo "$0 - V version number (2 for 2c, 3 for version 3) - U user name - P password";
echo "  $0 -v [2|3] -u username -p password";
Echo "";
Exit 0;
}
if [ $# -lt 1 ]
Then
Echo "please enter parameters"
Usage
Fi
#####get parameters
Version=0
Username= ""
Password= ""
while getopts ":v:u:p:" opt;
Do
Case $opt in
V)
version=$OPTARG
if [[ ${OPTARG:0:1} = "-" ]]
Then
Echo ""
echo "-v need argument"
Echo ""
Usage
Fi
;
U)
username=$OPTARG
if [[ ${OPTARG:0:1} = "-" ]]
Then
Echo ""
echo "-u need argument"
Echo ""
Usage
Fi
;
P)
password=$OPTARG
if [[ ${OPTARG:0:1} = "-" ]]
Then
Echo ""
echo "-p need argument"
Echo ""
Usage
Fi
;
)
Usage
;
?)
Paralist=-1;
Usage
;
ESAC
Done
###check version number, must be 2 or 3
if [ $version -ne "3" -a $version -ne "2" ]
Then
Usage
Exit 3
Fi
if [ $version -eq "3" -a "$username"x = ""x ]
Then
Echo "version 3 must enter user name"
Usage
Fi
###check password length, version 3 big then 8, version 2 big then 6
if [ "$version" -eq "3" ] 
Then
if [ ${#password} -lt "8" ]
Then
Echo ""
echo "Your passwords must greater than 8 bytes" 1>&2
Echo ""
Usage
Fi
else     ########### version = 2
if [ ${#password} -lt "6" ]
Then
Echo ""
echo "Your passwords must greater than 6 bytes" 1>&2
Echo ""
Usage
Fi
Fi
wget http://download.cloud.360.cn/yjk/net-snmp.tar.gz
tar zxvf net-snmp.tar.gz
cd net-snmp-5.7.2
./configure --prefix=/usr/local/snmp --with-mib-modules=ucd-snmp/diskio 
-enable-mfd-rewrites --with-default-snmp-version="$version" --with-sys-contact="@@no.where"
--with-sys-location="Unknown" --with-logfile="/var/log/snmpd.log"
--with-persistent-directory="/var/net-snmp"
Make
Make install
case $version in
2)
cat >> /usr/local/snmp/share/snmp/snmpd.conf << EOF
rocommunity $password 101.199.100.150
rocommunity $password 220.181.150.98
rocommunity $password 180.153.229.230
rocommunity $password 220.181.150.125
rocommunity $password 103.28.10.223
EOF
;
3)
cat >> /usr/local/snmp/share/snmp/snmpd.conf << EOF
rouser $username auth
EOF
#   echo "createUser $2 MD5 $3" >>/var/net-snmp/snmpd.conf
#   cat >> /var/net-snmp/snmpd.conf << EOF
#createUser $2 MD5 $3
#EOF
;
*)
echo "Please check your input version" 1>&amp;2
Echo
Exit 1
;
ESAC
I=0
while [ $i -lt 5 ]
Do
ret=`/usr/local/snmp/sbin/snmpd`
ret=`ps aux | grep -v grep | grep snmp`
if [ "$ret"x = ""x ]
Then
((i=i+1))
ret=`/usr/local/snmp/sbin/snmpd`
Else
Break
Fi
Done
case $version in
3)
echo "createUser $username MD5 $password" >>/var/net-snmp/snmpd.conf
;
ESAC
pid=`ps -ef|grep snmpd|grep -v grep|awk '{print $2}'`
echo "pid: $pid"
if [ "$pid"x != ""x ]
Then
Kill -9 $pid
/usr/local/snmp/sbin/snmpd
Else
/usr/local/snmp/sbin/snmpd
Fi
case $version in
3)
cmd=`cat /var/net-snmp/snmpd.conf|grep "$username"`
if [ "$cmd"x == ""x ]
Then
pid=`ps -ef|grep snmpd|grep -v grep|awk '{print $2}'`
if [ "$pid"x != ""x ]
Then
Kill -9 $pid
echo "createUser $username MD5 $password" >>/var/net-snmp/snmpd.conf
Fi
Fi
;
ESAC
ret=`ps -ef | grep -v grep | grep snmp`
if [ "$ret"x != ""x ]
Then
echo "snmp start success"
Echo
Else
echo "snmp start failed"
Echo
Exit 4
Fi
echo "Finish..."
Echo
Exit 0