On Fri, 2014-02-14 at 11:06 +0800, Mingjiang Shi wrote: > Hi Michael, > Thanks for answering my question. There was no such > file /var/lib/libvirt/dnsmasq/default.conf, so I created one. > However, it still doesn't work after killing the existing dnsmasq and > restarted the libvirtd.
Interesting. All my hosts are currently Fedora. I think I have a hard VM under VirtualBox I can check to see what libvirt is doing with dnsmasq. I suspect it's a libvirt configuration option. Regards, Mike > > ================ > [root@devmachine dnsmasq]# ls -l /var/lib/libvirt/dnsmasq/default.conf > -rw-r--r-- 1 root root 21245 Feb 14 > 10:33 /var/lib/libvirt/dnsmasq/default.conf > > > # added one line trying to assign 192.168.122.200 to container c1 > [root@devmachine dnsmasq]# tail > -1 /var/lib/libvirt/dnsmasq/default.conf > dhcp-host=c1,192.168.122.200 > > > # kill existing dnsmasq > > [root@devmachine dnsmasq]# ps -ef | grep dns > nobody 29325 1 0 10:37 ? 00:00:00 /usr/sbin/dnsmasq > --strict-order --local=// --domain-needed > --pid-file=/var/run/libvirt/network/default.pid --conf-file= > --except-interface lo --bind-interfaces --listen-address 192.168.122.1 > --dhcp-range 192.168.122.2,192.168.122.254 > --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases > --dhcp-lease-max=253 --dhcp-no-override > --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile > --addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts > > > [root@devmachine dnsmasq]# kill -9 29325 > [root@devmachine dnsmasq]# !ps > ps -ef | grep dns > root 30695 34063 0 11:02 pts/3 00:00:00 grep dns > > > # restart libvirtd > [root@devmachine dnsmasq]# service libvirtd restart > Stopping libvirtd daemon: [ OK ] > Starting libvirtd daemon: [ OK ] > > > # still no conf-file is given to dnsmasq > [root@devmachine dnsmasq]# !ps > ps -ef | grep dns > nobody 30782 1 0 11:03 ? 00:00:00 /usr/sbin/dnsmasq > --strict-order --local=// --domain-needed > --pid-file=/var/run/libvirt/network/default.pid --conf-file= > --except-interface lo --bind-interfaces --listen-address 192.168.122.1 > --dhcp-range 192.168.122.2,192.168.122.254 > --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases > --dhcp-lease-max=253 --dhcp-no-override > --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile > --addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts > root 30829 34063 0 11:03 pts/3 00:00:00 grep dns > ================ > > > > > > On Fri, Feb 14, 2014 at 1:33 AM, Michael H. Warfield > <[email protected]> wrote: > On Thu, 2014-02-13 at 16:23 +0800, Mingjiang Shi wrote: > > Hello, > > I run lxc container on centos and want to my container to > start with a > > static IP address. > > > > > > After some investigation, I figured out that the dnsmasq is > started by > > libvirtd to provide DNS and DHCP service to the container. > However, I > > cannot figure out how to reserve ip address for a specific > host in the > > dnsmasq config file. > > > > > > Meanwhile, in the ps out, it looks like no config file is > given when > > start the dnsmasq daemon, which doesn't sound right. > > > No, that doesn't sound right. Are you sure there isn't a > dnsmasq config > file in /var/lib/libvirt/dnsmasq/default.conf ? I take it > that it's > ignoring the default config file /etc/dnsmasq.conf options. > > According to the doco, dnsmasq does support static address > assignments, > so it's just a matter of getting to the correct conf file. > That may be > a libvirt configuation setting there. > > > > nobody 12531 1 0 Feb12 ? > 00:00:01 /usr/sbin/dnsmasq > > --strict-order --local=// --domain-needed > > --pid-file=/var/run/libvirt/network/default.pid --conf-file= > > --except-interface lo --bind-interfaces --listen-address > 192.168.122.1 > > --dhcp-range 192.168.122.2,192.168.122.254 > > --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases > > --dhcp-lease-max=253 --dhcp-no-override > > --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile > > --addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts > > > > > > > > As a workaround, I configured a static ip address in the > container > > like how we configure an ip address to a standard Linux box. > However, > > I want to know how to config dnsmasq to give static ip > address to a > > specific container because I may run lots of containers. > Appreciate > > any response and idea. Thanks! > > > > > > -- > > Thanks > > -Mingjiang > > > > > -- > > This message has been scanned for viruses and > > dangerous content by MailScanner, and is > > believed to be clean. > > _______________________________________________ > > lxc-users mailing list > > [email protected] > > http://lists.linuxcontainers.org/listinfo/lxc-users > > -- > > Michael H. Warfield (AI4NB) | (770) 978-7061 | > [email protected] > /\/\|=mhw=|\/\/ | (678) 463-0932 | > http://www.wittsend.com/mhw/ > NIC whois: MHW9 | An optimist believes we live in > the best of all > PGP Key: 0x674627FF | possible worlds. A pessimist is > sure of it! > > > _______________________________________________ > lxc-users mailing list > [email protected] > http://lists.linuxcontainers.org/listinfo/lxc-users > > > > > -- > Thanks > -Mingjiang > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > _______________________________________________ > lxc-users mailing list > [email protected] > http://lists.linuxcontainers.org/listinfo/lxc-users -- Michael H. Warfield (AI4NB) | (770) 978-7061 | [email protected] /\/\|=mhw=|\/\/ | (678) 463-0932 | http://www.wittsend.com/mhw/ NIC whois: MHW9 | An optimist believes we live in the best of all PGP Key: 0x674627FF | possible worlds. A pessimist is sure of it!
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