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centos6.x 初始化脚本
#!/bin/bash #:*********************************************** #:Program:centos6_init_shell #: #:Author:yanconggod #: #:History:2017-01-10 #: #:Version:1.0 #:*********************************************** cat <<EOF +--------------------------------------------------------------+ | === Welcome to System init === | +--------------------------------------------------------------+ EOF DATE=`date +%Y_%m_%d:%H_%M_%S` INIT_LOG=system_init_$DATE.log #0.yum resource config #mv /etc/yum.repos.d/* /tmp/ #wget -P /etc/yum.repos.d/ http://yum.xxx.xxx/{CentOS-Base.repo,epel.repo} yum clean all yum install vim gcc gcc-c++ openssl-devel python-devel lrzsz tree ftp telnet -y #1.del_user_group_config USER=(adm lp shutdown halt uucp operator games gopher) for i in `echo ${USER[*]}` do if grep -qs "$i" /etc/passwd;then /usr/sbin/userdel $i else echo "$i is no exist" fi done GROUP=(adm lp dip) for ii in `echo ${GROUP[*]}` do if grep -qs "$ii" /etc/group;then /usr/sbin/groupdel $ii else echo "$ii is no exist" fi done if [ "$?" == "0" ];then echo "$DATE [del_user_group_config] is [success]" >> /root/${INIT_LOG} fi #2.add_users_config #指定UID,密码不能明文显示 /usr/sbin/useradd -u 1001 -m -G 10 yanconggod sed -i ‘/yanconggod/s#\!\!#\$6\$nRS2zBCw\$9AuQZSdYJezLTyzinOQzfcp1je2EGAD5oL7d3JeAeSXKoVGd920\.vX\/dPFuyP\/C2VexJQa5PpPD\/wRfE0m\.9A\/#g‘ /etc/shadow USER1=(yanconggod) for yl in `echo ${USER1[*]}` do if grep -qs "$yl" /etc/passwd;then echo "$DATE $yl is added success" >>/root/${INIT_LOG} fi done #3.sudoer_config sed -i ‘s/Defaults requiretty/#Defaults requiretty/g‘ /etc/sudoers echo -e "User_Alias SYSADMINS = yanconggod" >> /etc/sudoers echo -e "SYSADMINS ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers echo "$DATE [sudoer_config] is [success]" >>/root/${INIT_LOG} #4.limits_config echo "* soft nofile 65535" >>/etc/security/limits.conf echo "* hard nofile 65535" >>/etc/security/limits.conf echo "* soft noproc 65535" >>/etc/security/limits.conf echo "* hard noproc 65535" >>/etc/security/limits.conf sed -i ‘/1024/s/1024/65535/g‘ /etc/security/limits.d/90-nproc.conf echo "$DATE [limits_config] is [success]" >>/root/${INIT_LOG} #5.sysctl_config echo "net.ipv4.tcp_syncookies = 1" >> /etc/sysctl.conf echo "net.ipv4.tcp_fin_timeout = 30" >> /etc/sysctl.conf echo "net.ipv4.tcp_tw_recycle = 1" >> /etc/sysctl.conf echo "net.ipv4.tcp_tw_reuse = 1" >> /etc/sysctl.conf echo "net.ipv4.tcp_max_syn_backlog = 4096" >> /etc/sysctl.conf echo "net.core.netdev_max_backlog = 10240" >> /etc/sysctl.conf echo "net.ipv4.icmp_echo_ignore_broadcasts = 1" >> /etc/sysctl.conf echo "net.core.somaxconn = 2048" >> /etc/sysctl.conf echo "net.core.wmem_default = 8388608" >> /etc/sysctl.conf echo "net.core.rmem_default = 8388608" >> /etc/sysctl.conf echo "net.core.rmem_max = 16777216" >> /etc/sysctl.conf echo "net.core.wmem_max = 16777216" >> /etc/sysctl.conf echo "net.ipv4.conf.all.rp_filter = 1" >> /etc/sysctl.conf echo "net.ipv4.tcp_keepalive_time = 300" >> /etc/sysctl.conf echo "net.ipv4.tcp_synack_retries = 2" >> /etc/sysctl.conf echo "net.ipv4.tcp_syn_retries = 2" >> /etc/sysctl.conf echo "net.ipv4.ip_local_port_range = 5000 65000 " >> /etc/sysctl.conf sysctl -p echo "$DATE [sysctl_config] is [success]" >>/root/${INIT_LOG} #6.history_config echo "export HISTSIZE=2000" >> /etc/profile source /etc/profile echo "$DATE [history_config] is [success]" >>/root/${INIT_LOG} #7.pass_length and login count limit #sed -i ‘25s/99999/90/g‘ /etc/login.defs #sed -i ‘27s/5/8/g‘ /etc/login.defs sed -i ‘5i auth required /lib64/security/pam_tally2.so deny=5 unlock_time=300‘ /etc/pam.d/system-auth #8.disable_selinux_config sed -i ‘s/SELINUX=enforcing/SELINUX=disabled/‘ /etc/selinux/config setenforce 0 echo "$DATE [disable_selinux_config] is [success]" >>/root/${INIT_LOG} #9.ntp_config ntp_config_count=`crontab -l | grep ntpdate|wc -l` if [ ${ntp_config_count} -eq 0 ];then cat <<EOF >> /var/spool/cron/root */5 * * * * /usr/sbin/ntpdate -s ntp1.aliyun.com >/dev/null 2>&1 EOF fi if [ $? = 0 ];then echo "$DATE [ntp_config] is [success]" >>/root/${INIT_LOG} fi #10.maxlogins_config echo "yanconggod - maxlogins 10" >> /etc/security/limits.conf echo "$DATE [maxlogins_config] is [success]" >>/root/${INIT_LOG} #11.disbled_ipv6_config cat >>/etc/modprobe.d/disableipv6.conf << EOF alias net-pf-10 off options ipv6 disable=1 EOF echo "$DATE [disble_ipv6_config] is [success]" >>/root/${INIT_LOG} #12.character_config cat >> /etc/sysconfig/i18n << EOF LANG="en_US.UTF-8" SYSFONT="latarcyrheb-sun16" EOF #13.disable_service_config for i in auditd blk-availability ip6tables iptables lvm2-monitor netfs udev-post do chkconfig $i off #iptables -F #iptables -X done echo "$DATE [disable_service_config] is [success]" >>/root/${INIT_LOG} #15.DNS config MASK=`ifconfig | grep -w "inet" | grep -v 127.0.0.1|awk -F‘:‘ ‘{print $2}‘|sed ‘s/ Bcast$//g‘| awk -F‘.‘ ‘{print $1"."$2}‘` echo $MASK if [ $MASK = "10.0" -o $MASK = "10.1" ] then cat > /etc/resolv.conf << EOF nameserver 10.0.0.1 #nameserver 1.1.1.2 #nameserver 1.1.1.3 EOF else : fi #16.sshd_config sed "s/#Port 22/Port 22/g" /etc/ssh/sshd_config -i sed "s/^#Protocol 2/Protocol 2/g" /etc/ssh/sshd_config -i sed "s/#UseDNS yes/UseDNS no/g" /etc/ssh/sshd_config -i #sed ‘s/#PermitRootLogin yes/PermitRootLogin no/g‘ /etc/ssh/sshd_config -i #sed ‘s/GSSAPIAuthentication yes/GSSAPIAuthentication no/g‘ /etc/ssh/sshd_config -i #sed ‘s/GSSAPIAuthentication yes/GSSAPIAuthentication no/g‘ /etc/ssh/ssh_config -i /etc/init.d/sshd restart echo "$DATE [sshd_config] is [success]" >>/root/${INIT_LOG} #17. reboot_system read -p "Do you want to reboot the system?" want case $want in yes) echo "reboot now!" reboot ;; no) echo "init over!" ;; *) echo "please useage yes or no! thanks" ;; esac
本文出自 “禅剑一如” 博客,请务必保留此出处http://yanconggod.blog.51cto.com/1351649/1890698
centos6.x 初始化脚本
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