how to make changes kernel configuration required by docker

guyuming · Apprentice Joined: 19 Nov 2020 Posts: 253

I installed docker and run the kernel configuration check mentioned in https://wiki.gentoo.org/wiki/Docker#Kernel

Check result says:

info: reading kernel config from /proc/config.gz ,,,
...
- CONFIG_NF_NAT_IPV4: missing
...

When i open make menuconfig, i see cascade of choice items, but how can i figure out which choice item in menuconfig corresponds to the missing key CONFIG_NF_NAT_IPV4 ?

And i tried edit the .config file directly, appending missing keys at the end, and run make, i saw a warning the CONFIG_MEMCG_SWAP_ENABLED=m i added was inappropriate shortly after the make begin. So, i Ctrl+C to stop the make.

The i check the .config file again to find that all the keys i added manually are no there anymore.

And i open the .config.old file to find out that the keys i added manually are there.

So, how can i reconfigure the kernel as required by docker install?

fedeliallalinea · Posted: Wed Dec 02, 2020 6:38 am Post subject:

In menuconfig you can type '/' and put NF_NAT_IPV4 for search where is a config, also tells you if it has some dependency on some other config.
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guyuming · Apprentice Joined: 19 Nov 2020 Posts: 253

Thanks!

fedeliallalinea · Posted: Wed Dec 02, 2020 1:51 pm Post subject:

See bug #685340
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Jaglover · Posted: Wed Dec 02, 2020 2:17 pm Post subject:

guyuming,

what version of docker are you installing?
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guyuming · Apprentice Joined: 19 Nov 2020 Posts: 253

fedeliallalinea · Posted: Thu Dec 03, 2020 9:35 am Post subject:

The problem seems that nf_nat_ipv4.c is merged with nf_nat_core.c so you can ignore this message and check if NF_NAT is enabled
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guyuming · Apprentice Joined: 19 Nov 2020 Posts: 253

what follows are other suggested missings which return "no matches found" in menuconfig:

NF_NAT_NEEDED
IO_SCHED_CFQ
CFQ_CGROUP_IOSCHED
INET_XFRM_MODE_TRANSPORT
AUFS_FS

I guess that could be caused by the checker script not catching up with the fast paced kernel change and i can just neglect it.

but how did you find the document links sent me above?

I tried something like https://bugs.gentoo.org/buglist.cgi?quicksearch=INET_XFRM_MODE_TRANSPORT but it returns nothing.

and something like https://cn.bing.com/search?q=site%3Agithub.com%2Ftorvalds%2F+Kconfig+IO_SCHED_CFQ also does not lead to meaningful results for me.