网络基本配置

/etc/sysconfig/network-scripts/ 下的各种配置分析总结

GATEWAY

如果在内部环境中安装 openEuler，发现机器有 ip 地址，但是无法 ping 通在机器上 ping 网关是没有问题的最后发现是没有配置路由:

ip route add default via 192.168.16.1 dev enp125s0f0

真正的解决办法是，给配置文件添加上 GATEWAY

🧀  cat /etc/sysconfig/network-scripts/ifcfg-ens19f1
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=eui64
NAME=ens19f1
UUID=e56d21a5-0348-4203-bdad-6211b4f3e61f
DEVICE=ens19f1
IPADDR=192.168.11.3
NETMASK=255.255.255.0
GATEWAY=192.168.16.1 # 加上这一样
ONBOOT=yes

忽然发现系统中的

nixos 中:

🧀   systemctl list-unit-files | grep -i network
network.service                        generated       -
NetworkManager-dispatcher.service      disabled        enabled
NetworkManager-wait-online.service     disabled        disabled
NetworkManager.service                 masked          enabled
systemd-network-generator.service      disabled        disabled
network-online.target                  static          -
network-pre.target                     static          -
network.target                         static          -

sudo journalctl -u systemd-network-generator

不过，看来 fedora 就是推荐用 NetworkManager 的:

🧀  journalctl -u network.service
Feb 25 11:23:24 haoqian-arm-xue systemd[1]: Starting LSB: Bring up/down networking...
Feb 25 11:23:24 haoqian-arm-xue network[6215]: WARN      : [network] You are using 'network' service provided by 'network-scri>
Feb 25 11:23:24 haoqian-arm-xue network[6215]: WARN      : [network] 'network-scripts' will be removed from distribution in ne>
Feb 25 11:23:24 haoqian-arm-xue network[6215]: WARN      : [network] It is advised to switch to 'NetworkManager' instead for n>

麻了，困扰好几年

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/sec-configuring_ip_networking_with_ifcg_files
https://askubuntu.com/questions/351300/networkmanager-in-disconnected-state
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/sec-configuring_ip_networking_with_nmcli

nfs 和 ovs 的配置

sudo yum install -y network-scripts sudo yum install -y nfs-utils # 给 nfs 的 mount 用

配置 ip 的 backtrace 流程

@[
        __inet_insert_ifa+1
        inet_rtm_newaddr+877
        rtnetlink_rcv_msg+882
        netlink_rcv_skb+89
        netlink_unicast+645
        netlink_sendmsg+525
        ____sys_sendmsg+927
        ___sys_sendmsg+153
        __sys_sendmsg+138
        do_syscall_64+126
        entry_SYSCALL_64_after_hwframe+118
]: 1

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