用grub引导netinstall安装Centos系统
没有DHCP 没有PXE 也没有netboot , IPMI又卡, 之前的老办法.
ks脚本需要提前准备一下
大约2012年的一台E3服务器价格记录
CPU: E3-1230V3 - RMB￥1380
主版 Supermicro X10SLH-F - RMB￥1300
內存 三星8GB UDIMM * 4 - RMB￥2000@
RAID 卡: LSI 9261-8i + BBU - RMB￥1200
硬盤: 西數1TB 黑色 * 4 - RMB￥1960
機箱, 散熱, 電源, 導軌 - RMB￥900
一共8740元
centos下的docker安装
源码仓库安装
wget https://download.docker.com/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo yum -y install docker-ce systemctl start docker
脚本安装
curl -fsSL https://get.docker.com |bash sh get-docker.sh
奇怪的iredmail安装脚本之一
源码安装
wget https://github.com/iredmail/iRedMail/archive/1.2.1.tar.gz -O -|tar xz cd iRedMail-* bash iRedMail.sh
Docker安装
docker volume create iRedMail docker run \ --rm \ --name iredmail \ --env-file /iredmail/iredmail-docker.conf \ --hostname Your-domian..com \ -p 80:80 \ -p 443:443 \ -p 110:110 \ -p 995:995 \ -p 143:143 \ -p 993:993 \ -p 25:25 \ -p 465:465 \ -p 587:587 \ -v /iredmail/data/backup:/var/vmail/backup \ -v /iredmail/data/mailboxes:/var/vmail/vmail1 \ -v /iredmail/data/mlmmj:/var/vmail/mlmmj \ -v /iredmail/data/mlmmj-archive:/var/vmail/mlmmj-archive \ -v /iredmail/data/imapsieve_copy:/var/vmail/imapsieve_copy \ -v /iredmail/data/custom:/opt/iredmail/custom \ -v /iredmail/data/ssl:/opt/iredmail/ssl \ -v /iredmail/data/mysql:/var/lib/mysql \ -v /iredmail/data/clamav:/var/lib/clamav \ -v /iredmail/data/sa_rules:/var/lib/spamassassin \ iredmail/mariadb:nightly
奇怪的安装mysql脚本之一
groupadd mysql -g 27
useradd mysql -u 27 -g 27 -c "MySQL Server" -d /home/mysql -m
function代码
function install_mysql() {
groupadd mysql
useradd -s /sbin/nologin -M -g mysql mysql
if [ -n "$1" ] ; then mysqlrootpwd=$1; else mysqlrootpwd=`openssl rand -base64 32| tr -dc _A-Z-a-z-0-9 | head -c12`; fi
echo root $mysqlrootpwd ' | ' `date` >> /root/mysql.txt
yum -y -q install mariadb mariadb-server galera
ln -s /usr/lib/systemd/system/mariadb.service /usr/lib/systemd/system/mysql.service
systemctl enable mariadb
systemctl start mariadb
mysqladmin -u root password $mysqlrootpwd
setmyqlroot $mysqlrootpwd
sed -i 's/skip-locking/skip-external-locking/g' /etc/my.cnf
}
function setmyqlroot() {
if [ -n "$1" ] ; then mysqlrootpwd=$1; else mysqlrootpwd=`openssl rand -base64 32| tr -dc _A-Z-a-z-0-9 | head -c12`; echo root $mysqlrootpwd ' | ' `date` >> /root/mysql.txt ; fi
mysql -uroot -p$mysqlrootpwd <<EOF
UPDATE mysql.user SET Password=PASSWORD("$mysqlrootpwd") WHERE User='root';
DELETE FROM mysql.user WHERE User='';
DELETE FROM mysql.user WHERE User='root' AND Host NOT IN ('localhost', '127.0.0.1', '::1');
DROP DATABASE IF EXISTS test;
DELETE FROM mysql.db WHERE Db='test' OR Db='test\\_%';
FLUSH PRIVILEGES;
exit
EOF
}执行安装
install_mysql()
mysql_install_db --user=mysql --datadir=/home/mysql --no-defaults &
mysqladmin -u root password $mysqlrootpwd
奇怪的安装脚本之一
wget https://minecraft.azureedge.net/bin-linux/bedrock-server-1.10.0.7.zip unzip bedrock-server-1.10.0.7.zip apt apt install zip unzip bedrock-server-1.10.0.7.zip LD_LIBRARY_PATH=. ./bedrock_server
comware二层接入交换机配置记录
sysname 主机名 #配置默认账户密码以及权限 aaa local-user admin password irreversible-cipher 密码 local-user admin privilege level 15 local-user admin service-type terminal ssh http #配置默认路由 ip route-static 0.0.0.0 0.0.0.0 172.20.20.1 #配置上联通信IP interface Vlanif2 ip address 172.20.20.20 255.255.255.0 #配置上联 interface GigabitEthernet0/0/50 description UPLINK port link-type trunk port trunk allow-pass vlan all #port trunk permit vlan all #配置端口 interface GigabitEthernet0/0/1 description 简介内容 port link-type access port default vlan 10 #分配VLAN ID (也可以在三层vlan里面进行限速) qos lr outbound cir 102400 cbs 12800000 #二层限制服务器的流入流量100Mbps qos lr inbound cir 10240 cbs 1280000 #二层限制服务器的流出流量10Mbps #配置SNMP snmp-agent community read cipher Public_community snmp-agent sys-info version v2c undo snmp-agent sys-info version v3 #配置DHCP转发 DHCP Relay dhcp-server 1 ip 192.168.0.10
配置rsa免密码记录在 http://www.kvm.la/1161.html
centos下vsftpd简易快速部署
有很久没用vsftpd了, 最近做自动备份需要用到ftp服务器, 思来想去也只有vsftp简单粗暴快捷了.
function setftpuser() {
setpassword=`openssl rand -base64 12|tr -dc _A-Z-a-z-0-9`;
adduser $1
echo $1 >> /etc/vsftpd/chroot_list
chmod 750 /home/$1
echo $1:$setpassword|chpasswd
echo $1 $setpassword;
echo $1 $setpassword > /root/vsftp.txt;
}
function vsftp-setup{
yum -y install vsftpd
cp /etc/vsftpd/vsftpd.conf /etc/vsftpd/vsftpd.conf.default
sed -i 's#anonymous_enable=YES#anonymous_enable=NO#g' /etc/vsftpd/vsftpd.conf
sed -i 's#listen=NO#listen=YES#g' /etc/vsftpd/vsftpd.conf
sed -i 's#listen_ipv6=YES#listen_ipv6=NO#g' /etc/vsftpd/vsftpd.conf
sed -i 's/#chroot_/chroot_/g' /etc/vsftpd/vsftpd.conf
systemctl enable vsftpd
systemctl start vsftpd
}
vsftp-setup #安装vsftpd
setftpuser 用户名 #添加用户ssh jail环境没有弄, 后面有精力再弄上.
RouterOS NAT内网映射
/ip firewall nat add chain=srcnat src-address=内网IP段/24 protocol=tcp action=masquerade add action=dst-nat chain=dstnat dst-address=公网IP dst-port=80,443,5900 protocol=tcp to-addresses=内网IP to-ports=0-65535 add action=dst-nat chain=dstnat dst-address=公网IP dst-port=623 protocol=udp to-addresses=内网IP to-ports=0-65535
怕忘记了,懒得到处找.
nginx php.conf配置
location ~ .*\.(php)?$ {
try_files $uri = 404;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_pass unix:/dev/shm/php-cgi.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root/$fastcgi_script_name;
include fastcgi_params;
}
location ~ .*\.(htm|gif|jpg|jpeg|png|bmp|ico|flv|swf|txt|wma)$ { expires 30d;}
location ~ .*\.(js|css)?$ { expires 1d;}
location ~ .*\.(tpl|svn|asp|aspx|jsp|do|mdb|zip|rar|bak|htc)?${ deny all; }
location ~ /0.* { deny all; }
if (!-e $request_filename) { return 444; }关于LVM丢分区和丢数据(最近又又又发生了)
LVM在linux下灵活划分硬盘空间分区是非常好用的一个东西.
从centos5开始到现在还在用的centos7, 我一直都在和lvm做斗争.
问题其实也简单, 无非就是lv分区导致丢失: 分区的md编号错乱丢失lv, lvremove恢复后丢失lv, 以及还有许多已经忘记的原因.
上月由于机柜搬迁数据中心的问题, 一些宿主服务器子系统较多关机时间太长, 在半路进行了强制关机.
然而在恢复完后就发现一些子系统没有恢复, 由于标签显示是自用的节点又暂时没有时间就延后处理了.
今天清点后发现全是自用的节点, 好在都是非一线重要的东西.
7月底一台快7年的E3 4x1T RAID10的服务器硬盘挂掉导致whmcs数据丢失了一部分重要的数据,
又因为之前迁移进来后没有做定时数据备份, 好在抢救到的数据能维持正常运行, 覆盖早先的备份后一切正常,
此事算妥善处理完成了.
丢数据的事其实已经亲身遇上过很多次了, 硬盘坏掉和LVM丢分区的事每年都有遇上, 即使有RAID也会翻车的可能.
从第一次在webnx的RAID10挂掉, 到LVM串联硬盘分区, 再到rm -rf 数据库, 以及这次又是RAID的挂掉.
数据备份不能马虎, 一定要做, 且异地备份 本地备份 差异备份 同步备份 都要做上, 数据越重要就越需要做备份.
有2次丢掉财务数据库经验的我总结的经验是, 不是每次都那么幸运可以靠手动修复数据.
有时候没了就是没了, 说啥都没有用.
Let’s Encrypt/Certbot Wildcard SSL certificate
export LC_ALL="en_US.UTF-8"
export LC_CTYPE="en_US.UTF-8"
yum install -y git
cd /opt
git clone https://github.com/certbot/certbot.git
cd certbot && ./certbot-auto
/opt/certbot/certbot-auto certonly --manual --preferred-challenges dns -d *.域名.后缀
--preferred-challenges dns的参数会要求建立一个_acme-challenge.的txt dns指向记录验证域名.
./certbot-auto certificates
yum install install certbot python3-cloudflare python3-certbot-dns-cloudflare -y
echo "00 04 01 * * certbot renew" >> /etc/cron.monthly/certbot
chmod 644 /etc/cron.monthly/certbot
certbot certonly --agree-tos --email [email protected] \
--dns-cloudflare \
--dns-cloudflare-credentials /root/cf.ini \
-d '*.baidu.XXX'
comware设置ssh免密码登陆
ssh-keygen -f .ssh/id_rsa.pub -e -m pem | grep -v '\-\-\-\-' | base64 -d | xxd -p #转换已有的rsa key
免密码登陆ssh
####交换机配置 rsa peer-public-key 1 public-key-code begin #此处是转换后的key数据 public-key-code end peer-public-key end # user-interface vty 0 4 authentication-mode aaa user privilege level 15 protocol inbound ssh # aaa local-user 用户名 password cipher 密码 privilege level 15 #local-user netadmin privilege level 15 local-user 用户名 service-type stelnet local-user 用户名 service-type ssh # stelnet server enable ssh user 用户名 authentication-type rsa ssh user 用户名 assign rsa-key 1 ssh user 用户名 service-type stelnet
设置密码登陆方式
user-interface vty 0 4 authentication-mode aaa protocol inbound ssh # aaa local-user 用户名 password cipher 密码 privilege level 15 local-user 用户名 service-type stelnet local-user 用户名 service-type ssh # stelnet server enable ssh user 用户名 authentication-type password ssh user 用户名 service-type stelnet
ubuntu把netplan改回ifupdown
The following procedure works for Ubuntu 18.04 (Bionic Beaver)
I. Reinstall the ifupdown package:
# apt-get update # apt-get install ifupdown
II. Configure your /etc/network/interfaces file with configuration stanzas such as:
source /etc/network/interfaces.d/* # The loopback network interface auto lo iface lo inet loopback allow-hotplug enp0s3 auto enp0s3 iface enp0s3 inet static address 192.168.1.133 netmask 255.255.255.0 broadcast 192.168.1.255 gateway 192.168.1.1 # Only relevant if you make use of RESOLVCONF(8) # or similar... dns-nameservers 1.1.1.1 1.0.0.1
III. Make the configuration effective (no reboot needed):
# ifdown --force enp0s3 lo && ifup -a # systemctl unmask networking # systemctl enable networking # systemctl restart networking
IV. Disable and remove the unwanted services:
# systemctl stop systemd-networkd.socket systemd-networkd \ networkd-dispatcher systemd-networkd-wait-online # systemctl disable systemd-networkd.socket systemd-networkd \ networkd-dispatcher systemd-networkd-wait-online # systemctl mask systemd-networkd.socket systemd-networkd \ networkd-dispatcher systemd-networkd-wait-online # apt-get --assume-yes purge nplan netplan.io
Then, you're done.
Note: You MUST, of course, adapt the values according to your system (network, interface name...).
