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Feedback on experience: missing packages, and how to fix out-of-memory error when virsh creates networks.

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This commit is contained in:
Eric Mountain 2015-03-13 16:03:31 +01:00
parent 9dab6017ff
commit dbce76efb6
1 changed files with 16 additions and 7 deletions
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23
docs/getting-started-guides/libvirt-coreos.md
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@ -8,10 +8,15 @@
### Prerequisites ### Prerequisites
1. Install [qemu](http://wiki.qemu.org/Main_Page) 1. Install [dnsmasq](http://www.thekelleys.org.uk/dnsmasq/doc.html)
2. Install [libvirt](http://libvirt.org/) 2. Install [ebtables](http://ebtables.netfilter.org/)
3. [Grant libvirt access to your user¹](https://libvirt.org/aclpolkit.html) 3. Install [qemu](http://wiki.qemu.org/Main_Page)
4. Check that your $HOME is accessible to the qemu user² 4. Install [libvirt](http://libvirt.org/)
5. Enable and start the libvirt daemon, e.g:
* ``systemctl enable libvirtd``
* ``systemctl start libvirtd``
6. [Grant libvirt access to your user¹](https://libvirt.org/aclpolkit.html)
7. Check that your $HOME is accessible to the qemu user²
#### ¹ Depending on your distribution, libvirt access may be denied by default or may require a password at each access. #### ¹ Depending on your distribution, libvirt access may be denied by default or may require a password at each access.
@ -22,9 +27,10 @@ virsh -c qemu:///system pool-list
If you have access error messages, please read https://libvirt.org/acl.html and https://libvirt.org/aclpolkit.html . If you have access error messages, please read https://libvirt.org/acl.html and https://libvirt.org/aclpolkit.html .
In short, if your libvirt has been compiled with Polkit support (ex: Arch, Fedora 21), you can create `/etc/polkit-1/rules.d/50-org.libvirt.unix.manage.rules` with the following content to grant full access to libvirt to `$USER` In short, if your libvirt has been compiled with Polkit support (ex: Arch, Fedora 21), you can create `/etc/polkit-1/rules.d/50-org.libvirt.unix.manage.rules` as follows to grant full access to libvirt to `$USER`
``` ```
sudo /bin/sh -c "cat - > /etc/polkit-1/rules.d/50-org.libvirt.unix.manage.rules" << EOF
polkit.addRule(function(action, subject) { polkit.addRule(function(action, subject) {
if (action.id == "org.libvirt.unix.manage" && if (action.id == "org.libvirt.unix.manage" &&
subject.user == "$USER") { subject.user == "$USER") {
@ -33,10 +39,9 @@ polkit.addRule(function(action, subject) {
polkit.log("subject=" + subject); polkit.log("subject=" + subject);
} }
}); });
EOF
``` ```
(Replace `$USER` with your login name)
If your libvirt has not been compiled with Polkit (ex: Ubuntu 14.04.1 LTS), check the permissions on the libvirt unix socket: If your libvirt has not been compiled with Polkit (ex: Ubuntu 14.04.1 LTS), check the permissions on the libvirt unix socket:
``` ```
@ -233,3 +238,7 @@ On Ubuntu:
``` ```
usermod -a -G libvirtd $USER usermod -a -G libvirtd $USER
``` ```
#### error: Out of memory initializing network (virsh net-create...)
Ensure libvirtd has been restarted since ebtables was installed.