zabbix_agentd-install.sh (脚本部署zabbix_agentd服务)

原文发表于cu：2016-05-20

基于http://www.cnblogs.com/netonline/p/7406598.html（http://blog.chinaunix.net/uid-26168435-id-5730201.html），写了1个简单的脚本来简化zabbix_agnetd的部署。
脚本运行注意事项：
1. script与zabbix-3.0.1.tar.gz放置在同一个目录运行；
2. 由于zabbix安装文件的名字未采用变量，在script中已写死，虽然可变更，但需要同步修改脚其中对应的地方；
3. script中涉及到变更运行目录，所以请使用"source" 或 ". "运行script，如: "source xx.sh"或". ./xx.sh"；
4. script运行基于centos6.x，请注意与centos7.x的命令区别，这里主要是centos7.x默认没有iptables，需要提前准备好iptables的环境。

#!/bin/bash
# Program:
#     Automatic install zabbix_agentd-3.0.1 in centos-6.x-x86_64 by the scripts.
# Usage:
#     It relate to change directory, please use source or . to execute this scripts, the others methods will fail.
# History:
#     2016/05/10    v0.1
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
export PATH

# Check if user is root.
if [ $(id -u) != "0" ]; then
    echo "Error: You must be root to run this script, please use root to install zabbix_agentd!"
    exit 1
fi

# Function: check the zabbix_server ip address which has be inputed.
checkip() {
        echo $1 | egrep -q '^[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}$' > /dev/null
            if [ $? -ne 0 ]; then
                echo "Error: Please input correct format IP address!"
                exit 1
            fi

        ipaddr=$1
        ip1=`echo $ipaddr | awk -F. '{print $1}'`
        ip2=`echo $ipaddr | awk -F. '{print $2}'`
        ip3=`echo $ipaddr | awk -F. '{print $3}'`
        ip4=`echo $ipaddr | awk -F. '{print $4}'`

        for num in $ip1 $ip2 $ip3 $ip4; do
            if [ $num -ge 255 ] || [ $num -lt 0 ]; then
                echo "Error: Please input correct format IP address!"
                exit 1
            fi
        done

        return 0
}

# Input zabbix_server's ip address.
read -p "Please input zabbix_server's ip address[ie: 192.168.1.1]: " zabbixserverip
checkip $zabbixserverip
echo "OK! Your zabbix_server is ${zabbixserverip}!"

# Set iptables rules, zabbix server will detect agentd by tcp 10050, and zabbix_agentd will send trapper to server by tcp 10051.
iptables -I INPUT -s $zabbixserverip -p tcp -m state --state NEW -m tcp --dport 10050 -j ACCEPT
iptables -I OUTPUT -d $zabbixserverip -p tcp -m state --state NEW -m tcp --dport 10051 -j ACCEPT
service iptables save

# Check selinux.
if [ $(getenforce) = "Enforcing" ]; then
    sed -i 's|SELINUX=enforcing|SELINUX=disabled|g' /etc/selinux/config ; sed -i 's|SELINUXTYPE=targeted|#SELINUXTYPE=targeted|g' /etc/selinux/config && setenforce 0
fi

# Create zabbix group and user.
groupadd zabbix
useradd -g zabbix -s /sbin/nologin zabbix

# Install zabbix_agentd
cur_dir=$(pwd)
tar -zxvf $cur_dir/zabbix-3.0.1.tar.gz -C /usr/local/src/
cd /usr/local/src/zabbix-3.0.1 
./configure --prefix=/usr/local/zabbix --enable-agent && make && make install
cd ~

# Add soft link to zabbix_agentd execute file.
ln -s /usr/local/zabbix/sbin/* /usr/local/sbin/ 
ln -s /usr/local/zabbix/bin/* /usr/local/bin/

# Modify zabbix_agentd config file.
sed -i "s|Server=127.0.0.1|Server=${zabbixserverip}|g" /usr/local/zabbix/etc/zabbix_agentd.conf
sed -i '262s|# Include=/usr/local/etc/zabbix_agentd.conf.d/|Include=/usr/local/zabbix/etc/zabbix_agentd.conf.d/|g' /usr/local/zabbix/etc/zabbix_agentd.conf
sed -i 's|# UnsafeUserParameters=0|UnsafeUserParameters=1|g' /usr/local/zabbix/etc/zabbix_agentd.conf

# Set zabbix_agentd automatic start scripts.
cp /usr/local/src/zabbix-3.0.1/misc/init.d/fedora/core/zabbix_agentd /etc/rc.d/init.d/zabbix_agentd
chown zabbix:zabbix /etc/rc.d/init.d/zabbix_agentd
chmod +x /etc/rc.d/init.d/zabbix_agentd
sed -i 's|BASEDIR=/usr/local|BASEDIR=/usr/local/zabbix|g' /etc/rc.d/init.d/zabbix_agentd
chkconfig --level 35 zabbix_agentd on

# Start zabbix_agentd service.
service zabbix_agentd start

# Check zabbix_agentd service.
if [ $(netstat -tnlp | grep zabbix_agentd | awk '{print $7}' | awk -F/ '{print $2}') = "zabbix_agentd" ]; then
    echo -e "33[32m [INFO]Zabbix_agentd has installed and started! 33[0m"
else
    echo -e "33[31m [ERROR]Zabbix_agentd has not started! 33[0m"
fi

# Clean install package.
rm -rf /usr/local/src/zabbix-3.0.1