43 lines
1.1 KiB
Markdown
43 lines
1.1 KiB
Markdown
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```shell
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yum -y install perl
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rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
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yum -y install https://www.elrepo.org/elrepo-release-7.0-4.el7.elrepo.noarch.rpm
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yum --enablerepo="elrepo-kernel" -y install kernel-ml.x86_64
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grub2-set-default 0
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grub2-mkconfig -o /boot/grub2/grub.cfg
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```
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## 内核优化
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```shell
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cat <<EOF > /etc/sysctl.d/k8s.conf
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net.ipv4.ip_forward = 1
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net.bridge.bridge-nf-call-iptables = 1
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net.bridge.bridge-nf-call-ip6tables = 1
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fs.may_detach_mounts = 1
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vm.overcommit_memory=1
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vm.panic_on_oom=0
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fs.inotify.max_user_watches=89100
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fs.file-max=52706963
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fs.nr_open=52706963
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net.netfilter.nf_conntrack_max=2310720
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net.ipv4.tcp_keepalive_time = 600
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net.ipv4.tcp_keepalive_probes = 3
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net.ipv4.tcp_keepalive_intvl =15
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net.ipv4.tcp_max_tw_buckets = 36000
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net.ipv4.tcp_tw_reuse = 1
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net.ipv4.tcp_max_orphans = 327680
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net.ipv4.tcp_orphan_retries = 3
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net.ipv4.tcp_syncookies = 1
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net.ipv4.tcp_max_syn_backlog = 16384
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net.ipv4.ip_conntrack_max = 131072
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net.ipv4.tcp_max_syn_backlog = 16384
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net.ipv4.tcp_timestamps = 0
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net.core.somaxconn = 16384
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EOF
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# 更改应用
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sysctl --system
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```
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!!!!!需要重启
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