Changes

:See [[Control_panels]]. [http://code.google.com/p/ovz-web-panel/ OVZ Web panel] is recommended.'''FIXME'''

:Aside from this wiki, which contains lots of information, you can check extensive [[Man|manual pages]] and [http://docs.openvz.org].

===== What hardware is supported by How to install OpenVZ kernel? =====:See [http://www.parallels.com/en/products/virtuozzo/hcl/ Virtuozzo HCL].

===== Why there are different kernel flavours available and what do they mean? =====:See [[Different kernel flavors (UP, SMP, ENTERPRISE, ENTNOSPLIT)Quick installation]].

===== How do I rebuild the kernel? =====:See [[Kernel build]]. ===== What does 021stab018 in hardware is supported by OpenVZ kernel version mean? =====:See [[Kernel versioning]]. ===== How can I check package signatures? =====:See [[Package signatures]]. ===== Is it possible to run x86 container on a x86_64 arch? =====:Sure :) We actually did some work on that to enable migration of x86 container from x86 to x86_64 and back, and to enable using 32-bit iptables in 32bit container on an x86_64 system. ===== What filesystems should I choose for saving my containers? =====: Currently, ext4 is recommended. Any filesystem which supports Unix style permissions is usable, such as Ext3 or ReiserFS. XFS works, but does not have support for disk quotas inside containers. == Networking == ===== How do I set up VPN for a container? =====:See [[VPN via the TUN/TAP device]]. ===== What is veth and how do I use it? =====:See [[Virtual Ethernet device]]. ===== Why doesn't net-snmpd work on my containers? =====:See [[SNMPD in container]]. ===== Can I use private IPs for my containers? =====:See [[NAT]]. == User Beancounters (UBC) == ===== What are those User Beancounters? =====See [[UBC]]. ===== What units are UBC parameters measured in? =====See [[UBC parameter units]]. ===== How do I set up a container which is able to get X Mb of RAM? =====See [[Setting UBC parameters]]. ===== I can not start a program in container: it reports out of memory. What do I do? =====See [[Resource_shortage]]. ===== How can I reset <code>failcnt</code> in <code>/proc/user_beancounters</code>? =====See [[UBC failcnt reset]]. == Troubleshooting ======= My kernel crashed. What should I do? =====:See [[When you have an oops]]. ===== I see a lot of processes in D state. What does that mean? =====https:See [[Processes in D state]]. ===== My container cannot access the internet. What should I do? ===== If you can ping the host node but receive an error similar to: <pre>[root@test /]# ping 8.8.8.8PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.From 192.168.1.1 icmp_seq=1 Destination Host Prohibited</pre> then likely the host node has an active firewallhardware. Running the command  <pre>[root@host ~]# /etc/initredhat.dcom/iptables stopiptables: Flushing firewall rules: [ OK RHEL Hardware Compatibility List]iptables: Setting chains to policy ACCEPT: filter [ OK ]iptables: Unloading modules: [ OK ]</pre> will turn it off. If that works, then you know iptables firewall needs to be configured.