Difference between revisions of "Docker inside CT vz7"
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Since Virtuozzo 7 kernel vzkernel-3.10.0-327.18.2.vz7.14.7 it is possible to run Docker inside containers. This article describes how. | Since Virtuozzo 7 kernel vzkernel-3.10.0-327.18.2.vz7.14.7 it is possible to run Docker inside containers. This article describes how. | ||
| − | <br>'''This page is applicable for Virtuozzo 7 | + | <br>'''This page is applicable for Virtuozzo 7''' (for OpenVZ 6 see [[Docker inside CT | '''here''']]). |
== Prerequisites == | == Prerequisites == | ||
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* Only '''overlay''' and '''vfs''' Docker graph drivers are currently supported | * Only '''overlay''' and '''vfs''' Docker graph drivers are currently supported | ||
* [[Checkpointing and live migration]] of a container with Docker containers inside is not supported yet (to be done) | * [[Checkpointing and live migration]] of a container with Docker containers inside is not supported yet (to be done) | ||
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[[Category:HOWTO]] | [[Category:HOWTO]] | ||
[[Category: TRD]] | [[Category: TRD]] | ||
Revision as of 20:49, 18 July 2016
Since Virtuozzo 7 kernel vzkernel-3.10.0-327.18.2.vz7.14.7 it is possible to run Docker inside containers. This article describes how.
This page is applicable for Virtuozzo 7 (for OpenVZ 6 see here).
Prerequisites
- Kernel 3.10.0-327.18.2.vz7.14.7 or later version
- Kernel modules veth and overlay loaded on host
Note: if you use kernel >= 3.10.0-327.18.2.vz7.14.25, you need to allow using "overlayfs" inside a Virtuozzo Container:
echo 1 > /proc/sys/fs/experimental_fs_enable
Container tuning
- Turn on bridge feature to allow docker creating bridged network:
vzctl set $veid --features bridge:on --save
- Setup Container veth-based network (Container must be veth-based, not venet-based):
vzctl set $veid --netif_add eth0 --save
- Allow all iptables modules to be used in containers:
vzctl set $veid --netfilter full --save
Limitations
- Only overlay and vfs Docker graph drivers are currently supported
- Checkpointing and live migration of a container with Docker containers inside is not supported yet (to be done)
