使用cobbler 安装CentOS8

修改cobbler distro 让支持CentOS8

cp /var/lib/cobbler/distro_signatures.json /var/lib/cobbler/distro_signatures.json.bak vi /var/lib/cobbler/distro_signatures.json # 找到rhel7 段在下面添加内容 "rhel8": { "signatures":["BaseOS"], "version_file":"(redhat|sl|slf|centos|oraclelinux|vzlinux)-release-(?!notes)([\\w]*-)*8[\\.-]+(.*)\\.rpm", "version_file_regex":null, "kernel_arch":"kernel-(.*).rpm", "kernel_arch_regex":null, "supported_arches":["i386","x86_64","ppc","ppc64","ppc64le"], "supported_repo_breeds":["rsync", "rhn", "yum"], "kernel_file":"vmlinuz(.*)", "initrd_file":"initrd(.*)\\.img", "isolinux_ok":false, "default_kickstart":"/var/lib/cobbler/kickstarts/sample_end.ks", "kernel_options":"", "kernel_options_post":"", "boot_files":[] }, # 保存 # 重启cobblerd service cobblerd restart

创建ks 文件及初始化shell文件

# cobbler 服务器IP 192.168.2.56 请修改成自己的cobbler服务器地址 vim /var/lib/cobbler/kickstarts/CentOS8-x86_64.ks #Kickstart Configurator by Qist #platform=x86, AMD64, or Intel EM64T #System language lang en_US #System keyboard keyboard us #Sytem timezone timezone Asia/Shanghai #Root password rootpw --iscrypted $default_password_crypted #rootpw --iscrypted $1$ops-node$7hqdpgEmIE7Z0RbtQkxW20 #Use text mode install text #Install OS instead of upgrade install #Use NFS installation Media url --url=$tree #System bootloader configuration #inst.dd modprobe.blacklist=isci bootloader --location=mbr #Clear the Master Boot Record zerombr #Partition clearing information clearpart --all --initlabel #Disk partitioning information #autopart part /boot --fstype ext4 --size 5120 #part swap --size 16384 part / --fstype ext4 --size 51200 #part /home --fstype ext4 --size 10240 part /apps --fstype xfs --size 1 --grow #System authorization infomation #System authorization infomation auth --useshadow --enablemd5 #Network information $SNIPPET('network_config') #network --bootproto=dhcp --device=eth0 --onboot=on # Reboot after installation reboot #Firewall configuration firewall --disabled #SELinux configuration selinux --disabled #Do not configure XWindows skipx %pre $SNIPPET('log_ks_pre') $SNIPPET('kickstart_start') $SNIPPET('pre_install_network_config') # Enable installation monitoring $SNIPPET('pre_anamon') %end #Package install information #autopart %packages @ base @ core sysstat iptraf ncurses-devel zlib-devel net-tools tree mailx wget telnet bash-completion %end %post systemctl disable postfix.service mkdir -p /root/.ssh wget -P /root/.ssh http://192.168.2.56/cobbler/ks_mirror/bash/authorized_keys # 公钥 cd /root wget http://192.168.2.56/cobbler/ks_mirror/bash/CentOS8-x86_64.sh # 安装完成执行shell 文件 sh /root/CentOS8-x86_64.sh sh rm -rf /root/* %end # 创建CentOS8-x86_64.sh # 创建shell 存放目录 mkdir -p /var/www/cobbler/ks_mirror/bash/ vim /var/www/cobbler/ks_mirror/bash/CentOS8-x86_64.sh #!/bin/bash ###############################################set conf################################################# #set ulimit echo "ulimit -SHn 1024000" >> /etc/rc.local cat >> /etc/security/limits.conf << EOF * soft nofile 1024000 * hard nofile 1024000 * soft nproc 1024000 * hard nproc 1024000 EOF # set max service processes cat >> /etc/systemd/system.conf << EOF DefaultLimitNOFILE=1024000 DefaultLimitNPROC=1024000 EOF #set max user processes #sed -i 's/4096/1024000/' /etc/security/limits.d/20-nproc.conf #set ssh sed -i 's/^GSSAPIAuthentication yes$/GSSAPIAuthentication no/' /etc/ssh/sshd_config sed -i 's/#UseDNS yes/UseDNS no/' /etc/ssh/sshd_config #sed -i 's/#PermitRootLogin yes/#PermitRootLogin no/' /etc/ssh/sshd_config service sshd restart #set sysctl true > /etc/sysctl.conf cat >> /etc/sysctl.conf << EOF net.ipv4.ip_forward = 1 net.ipv4.conf.default.rp_filter = 1 net.ipv4.conf.default.accept_source_route = 0 kernel.sysrq = 0 kernel.core_uses_pid = 1 net.ipv4.tcp_syncookies = 1 fs.file-max = 1024000 fs.nr_open = 1024000 vm.swappiness = 0 vm.max_map_count = 2048000 vm.overcommit_memory = 1 kernel.sem =5010 641280 5010 128 kernel.pid_max = 4194303 kernel.msgmnb = 65536 kernel.msgmax = 65536 kernel.shmmax = 68719476736 kernel.shmall = 4294967296 net.ipv4.tcp_max_tw_buckets = 6000 net.ipv4.tcp_sack = 1 net.ipv4.tcp_window_scaling = 1 net.ipv4.tcp_mem = 786432 1697152 1945728 net.ipv4.tcp_rmem = 4096 87380 16777216 net.ipv4.tcp_wmem = 4096 65536 16777216 net.core.wmem_default = 8388608 net.core.rmem_default = 8388608 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.core.netdev_max_backlog = 2048000 net.core.somaxconn = 65535 net.ipv4.tcp_max_orphans = 3276800 net.ipv4.tcp_max_syn_backlog = 2048000 net.ipv4.tcp_syn_retries = 1 net.ipv4.tcp_synack_retries = 1 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_synack_retries = 1 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_mem = 94500000 915000000 927000000 net.ipv4.tcp_fin_timeout = 1 net.ipv4.tcp_keepalive_time = 600 net.ipv4.tcp_keepalive_probes = 10 net.ipv4.tcp_keepalive_intvl = 30 net.ipv4.ip_local_port_range = 1024 65535 # net.ipv4.ip_local_reserved_ports = 8000-20000 net.ipv4.neigh.default.gc_stale_time=120 net.ipv4.conf.default.rp_filter=0 net.ipv4.conf.all.rp_filter=0 net.ipv4.conf.all.arp_announce=2 net.ipv4.conf.lo.arp_announce=2 sunrpc.tcp_slot_table_entries=256 EOF /sbin/sysctl -p echo "sysctl set OK!!" sed -i 's/SELINUX=.*/SELINUX=disabled/g' /etc/selinux/config setenforce 0 #set profile cat >> /etc/profile << EOF ulimit -d unlimited ulimit -m unlimited ulimit -s unlimited ulimit -v unlimited ulimit -t unlimited ulimit -c unlimited EOF chmod +x /etc/rc.local systemctl stop firewalld.service rm -rf /root/*.cfg rm -rf /root/*.log rm -rf /root/CentOS8-x86_64.sh

cobbler import --path=/mnt/centos --name=CentOS-8-x86_64-1905 --kickstart=/var/lib/cobbler/kickstarts/CentOS8-x86_64.ks --arch=x86_64 # 设置网卡名字为ethx cobbler profile edit --name=CentOS-8-1905-x86_64 --kopts='net.ifnames=0 biosdevname=0' # 同步cobbler cobbler sync

测试

# 等等安装完成 #进入系统 [root@localhost ~]# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 52:54:00:33:e0:0f brd ff:ff:ff:ff:ff:ff inet 192.168.2.196/23 brd 192.168.3.255 scope global noprefixroute eth0 valid_lft forever preferred_lft forever inet6 fc00:bd4:efa8:1001:5054:ff:fe33:e00f/64 scope global dynamic noprefixroute valid_lft 86127sec preferred_lft 14127sec inet6 fe80::5054:ff:fe33:e00f/64 scope link noprefixroute valid_lft forever preferred_lft forever [root@localhost ~]# uname -a Linux localhost.localdomain 4.18.0-80.7.1.el8_0.x86_64 #1 SMP Sat Aug 3 15:14:00 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux [root@localhost ~]# cat /etc/redhat-release CentOS Linux release 8.0.1905 (Core) [root@localhost ~]# ulimit -a core file size (blocks, -c) unlimited data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 31148 max locked memory (kbytes, -l) 16384 max memory size (kbytes, -m) unlimited open files (-n) 1024000 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) unlimited cpu time (seconds, -t) unlimited max user processes (-u) 1024000 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited # 系统已经安装完成

修改cobbler distro 让支持CentOS8

下载CentOS8

挂载下载完成iso

创建ks 文件及初始化shell文件

导入镜像到cobbler

测试

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