关于脚本
服务器使用之前，都需要先配置静态IP，那就将这种简单重复的工作，交给脚本来处理吧，让我们运维有更多的时间喝茶看报刷微博
脚本使用
sh ssh.sh ip.txt
ssh.sh为脚本的名称，自行设定，不是固定项ip.txt为ip、密码、主机名的记录文件，文件名称可以自行设定，不是固定项，内容格式如下：
192.168.72.46 123.com k8s-01 192.168.72.47 123.com k8s-02 192.168.72.48 123.com k8s-03 192.168.72.49 123.com k8s-04 192.168.72.50 123.com k8s-05
- 注：ip、密码、主机名之间的间距为
一个空格，脚本内的切割命令，指定的分隔符也是一个空格，请注意文本格式
注意项目
- 此脚本配置了
单向免密 - 此脚本配置了
hosts解析 - 此脚本修改了
hostname - 此脚本会
重启网卡服务 - 此脚本会用到
expect，请提前安装 - 此脚本目前适用于
suse、centos、redhat发行版，其他发行版，后面继续更新（我的测试环境是suse 12 sp3、centos 7.7、redhat 7、fedora 32） - 此脚本会
删除脚本所在目录下的所有.template结尾的文件，建议脚本放到干净的目录执行 - 此脚本内定义了以下
固定变量，请根据自身情况进行修改：
CARDNAME为网卡名称（ip a或者ifconfig查看）GATEWAY为网关,CentOS网卡配置文件内的DNS1默认为和网关IP一致NETMAST为子网掩码前缀domain_template函数内，写了几个常用的国内dns服务器，可以自行修改或删减
脚本正文
#!/usr/bin/env bash PWD=$(cd $(dirname $0) ; pwd) FILENAME=$1 CARDNAME='eth0' GATEWAY='192.168.72.2' NETMASK='24' # 检查linux发行版，suse和centos的网卡配置文件所在目录是不一样的 function check_os (){ RELEASE=$(grep PRETTY_NAME /etc/os-release | awk -F '"' '{print $2}' | awk '{print $1}') if [ ${RELEASE} == "SUSE" ] then printf "[\e[0;35mINFO\e[0m]\e[0;35mYour system is ${RELEASE}\e[0m\n" ifcfg_dir='/etc/sysconfig/network' fi if [ ${RELEASE} == "CentOS" ] || [ ${RELEASE} == "Red" ] || [ ${RELEASE} == "Fedora" ] then printf "[\e[0;35mINFO\e[0m]\e[0;35mYour system is ${RELEASE}\e[0m\n" ifcfg_dir='/etc/sysconfig/network-scripts/' fi } # 检查ip.txt文件是否创建了，以及执行方式是否正确 function check_file (){ if [ ! -n "${FILENAME}" ]; then printf "[\e[0;31mERROR\e[0m]\e[0;35m No host ip address account file supplied !!!\e[0m\n" printf "[\e[0;35mUsage\e[0m] $0 [\e[0;35mip.txt\e[0m]\n" exit 1 fi IPADDRESS=() PASSWORDS=() HOSTNAMES=() while read line do ip_addres=$(echo ${line} | cut -d " " -f1) pass_word=$(echo ${line} | cut -d " " -f2) host_name=$(echo ${line} | cut -d " " -f3) IPADDRESS[${#IPADDRESS[*]}]=${ip_addres} PASSWORDS[${#PASSWORDS[*]}]=${pass_word} HOSTNAMES[${#HOSTNAMES[*]}]=${host_name} done < ${FILENAME} } # 配置ssh免密 function ssh_auth () { [ -d /root/.ssh ] && mv /root/.ssh{,.bak.`date +%F`} ssh-keygen -t rsa -P "" -f /root/.ssh/id_rsa -q > /dev/null 2>&1 for ((i = 0; i < ${#IPADDRESS[@]}; i++)) do ip_addres=${IPADDRESS[$i]} pass_word=${PASSWORDS[$i]} printf "[\e[0;35mINFO\e[0m]\e[0;35m${ip_addres}\e[0m\n" expect -c " spawn ssh-copy-id -i /root/.ssh/id_rsa.pub root@${ip_addres} expect { \"*yes/no*\" {send \"yes\r\"; exp_continue} \"*assword*\" {send \"${pass_word}\r\"; exp_continue} \"*assword*\" {send \"${pass_word}\r\";} }" done } # 创建hosts文件模板 function hosts_template () { for ((i = 0; i < ${#IPADDRESS[@]}; i++)) do ip_addres=${IPADDRESS[$i]} host_name=${HOSTNAMES[$i]} echo "${ip_addres} ${host_name}" >> ${PWD}/hosts.template done printf "[\e[0;35mINFO\e[0m]\e[0;35mhosts_template Completed\e[0m\n" } # 生成网卡配置文件模板 function ifcfg_template () { if [ ${RELEASE} == "SUSE" ] then for ((i = 0; i < ${#IPADDRESS[@]}; i++)) do ip_addres=${IPADDRESS[$i]} sed -e "s%^IPADDR=.*%IPADDR=\'${ip_addres}/${NETMASK}\'%g" \ /etc/sysconfig/network/ifcfg-${CARDNAME} \ > ${PWD}/ifcfg-${CARDNAME}-${ip_addres}.template done printf "[\e[0;35mINFO\e[0m]\e[0;35mifcfg_template Completed\e[0m\n" fi if [ ${RELEASE} == "CentOS" ] || [ ${RELEASE} == "Red" ] || [ ${RELEASE} == "Fedora" ] then cat > ${PWD}/ifcfg-${CARDNAME}.template <<EOF TYPE="Ethernet" PROXY_METHOD="none" BROWSER_ONLY="no" BOOTPROTO="none" DEFROUTE="yes" IPV4_FAILURE_FATAL="no" NAME="${CARDNAME}" DEVICE="${CARDNAME}" ONBOOT="yes" IPADDR="" PREFIX="" GATEWAY="" DNS1="" EOF for ((i = 0; i < ${#IPADDRESS[@]}; i++)) do ip_addres=${IPADDRESS[$i]} sed -e "s%^IPADDR=.*%IPADDR=\"${ip_addres}\"%g" \ -e "s%^PREFIX=.*%PREFIX=\"${NETMASK}\"%g" \ -e "s%^GATEWAY=.*%GATEWAY=\"${GATEWAY}\"%g" \ -e "s%^DNS1=.*%DNS1=\"${GATEWAY}\"%g" \ -e "s%^DEVICE=.*%DEVICE=\"${CARDNAME}\"%g" \ -e "s%^NAME=.*%NAME=\"${CARDNAME}\"%g" ${PWD}/ifcfg-${CARDNAME}.template \ > ${PWD}/ifcfg-${CARDNAME}-${ip_addres}.template done printf "[\e[0;35mINFO\e[0m]\e[0;35mifcfg_template Completed\e[0m\n" fi } # 生成网关配置文件模板 function ifroute_template () { if [ ${RELEASE} == "SUSE" ] then echo "default ${GATEWAY} - ${CARDNAME}" > ${PWD}/ifroute-${CARDNAME}.template fi printf "[\e[0;35mINFO\e[0m]\e[0;35mifroute_template Completed\e[0m\n" } # 生成DNS配置文件模板 function domain_template () { cat > ${PWD}/resolv.conf.template <<EOF nameserver 101.6.6.6 nameserver 223.5.5.5 nameserver 119.29.29.29 nameserver 180.76.76.76 nameserver 114.114.114.114 EOF printf "[\e[0;35mINFO\e[0m]\e[0;35mdomain_template Completed\e[0m\n" } # 分发模板文件到其他节点 function scp_template () { for ((i = 0; i < ${#IPADDRESS[@]}; i++)) do ip_addres=${IPADDRESS[$i]} host_name=${HOSTNAMES[$i]} if [ ${RELEASE} == "SUSE" ] then scp ${PWD}/hosts.template ${ip_addres}:/etc/ > /dev/null scp ${PWD}/ifcfg-${CARDNAME}-${ip_addres}.template ${ip_addres}:${ifcfg_dir}/ifcfg-${CARDNAME} > /dev/null scp ${PWD}/ifroute-${CARDNAME}.template ${ip_addres}:${ifcfg_dir}/ifroute-${CARDNAME} > /dev/null scp ${PWD}/resolv.conf.template ${ip_addres}:/etc/ > /dev/null ssh root@${ip_addres} "cat /etc/hosts.template >> /etc/hosts && rm -f /etc/hosts.template" ssh root@${ip_addres} "cat /etc/resolv.conf.template >> /etc/resolv.conf && rm -f /etc/resolv.conf.template" ssh root@${ip_addres} "hostnamectl set-hostname --static ${host_name}" printf "[\e[0;35mINFO\e[0m]\e[0;35m${ip_addres} scp_template Completed\e[0m\n" fi if [ ${RELEASE} == "CentOS" ] || [ ${RELEASE} == "Red" ] || [ ${RELEASE} == "Fedora" ] then scp ${PWD}/hosts.template ${ip_addres}:/etc/ > /dev/null scp ${PWD}/ifcfg-${CARDNAME}-${ip_addres}.template ${ip_addres}:${ifcfg_dir}/ifcfg-${CARDNAME} > /dev/null scp ${PWD}/resolv.conf.template ${ip_addres}:/etc/ > /dev/null ssh root@${ip_addres} "cat /etc/hosts.template >> /etc/hosts && rm -f /etc/hosts.template" ssh root@${ip_addres} "cat /etc/resolv.conf.template >> /etc/resolv.conf && rm -f /etc/resolv.conf.template" ssh root@${ip_addres} "hostnamectl set-hostname --static ${host_name}" printf "[\e[0;35mINFO\e[0m]\e[0;35m${ip_addres} scp_template Completed\e[0m\n" fi done } # 重启network服务 function restart_network () { if [ ${RELEASE} == "SUSE" ] then for ((i = 0; i < ${#IPADDRESS[@]}; i++)) do ip_addres=${IPADDRESS[$i]} ssh root@${ip_addres} "systemctl restart network && \ ping www.baidu.com -c 1 | awk 'NR == 2'" printf "[\e[0;35mINFO\e[0m]\e[0;35m${ip_addres} restart_network Completed\e[0m\n" done fi if [ ${RELEASE} == "CentOS" ] || [ ${RELEASE} == "Red" ] || [ ${RELEASE} == "Fedora" ] then for ((i = 0; i < ${#IPADDRESS[@]}; i++)) do ip_addres=${IPADDRESS[$i]} ssh root@${ip_addres} "systemctl restart NetworkManager && \ ping www.baidu.com -c 1 | awk 'NR == 2'" printf "[\e[0;35mINFO\e[0m]\e[0;35m${ip_addres} restart_network Completed\e[0m\n" done fi } function main () { check_os check_file hosts_template ifcfg_template ifroute_template domain_template ssh_auth scp_template restart_network rm -f ${PWD}/*.template } main
