Add a module for full Docker Swarm please?


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ok i found something in the /var/log/docker.log

time="2019-05-29T21:22:05.101290807+10:00" level=error msg="Could not get ipvs family information from the kernel. It is possible that ipvs is not enabled in your kernel. Native loadbalan
cing will not work until this is fixed."

 

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2 hours ago, seer_tenedos said:

@CHBMB thanks for all the help on this and sorry to take so long to get a chance to test it.

 

Firstly i will point out how i am testing it incase other interested people want to try or can spot my mistake.

1. create a single node docker swarm (docker swarm init)

2. follow connectivity tests from https://gist.github.com/alexellis/8e15f2ea1af7281268ec7274686985ba

 

Sadly the latest patch above did not quite work for me.  The network create and service create looks like they work


$ docker network create --driver=overlay --attachable=true testnet
$ docker service create --network=testnet --name web --publish 80 --replicas=5 nginx:latest

but when i used curl below to test it could not connect


docker run --name alpine --net=testnet -ti alpine:latest sh
/ # apk add --no-cache curl
fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/community/x86_64/APKINDEX.tar.gz
(1/5) Installing ca-certificates (20190108-r0)
(2/5) Installing nghttp2-libs (1.35.1-r0)
(3/5) Installing libssh2 (1.8.2-r0)
(4/5) Installing libcurl (7.64.0-r1)
(5/5) Installing curl (7.64.0-r1)
Executing busybox-1.29.3-r10.trigger
Executing ca-certificates-20190108-r0.trigger
OK: 7 MiB in 19 packages
/ # curl web
curl: (7) Failed to connect to web port 80: Host is unreachable
/ # ping web
PING web (10.0.0.2): 56 data bytes

 

either something is still missing or i have set something up wrong.

I don't think the problem is with the kernel and docker, but I can't help you as I don't use swarm.  Here's a reference to a working .config for swarm and as you can see with the last patched version there are all the same kernel modules present and some that aren't present in their config.

 

https://blog.hypriot.com/post/verify-kernel-container-compatibility/

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23 hours ago, seer_tenedos said:

ok i found something in the /var/log/docker.log


time="2019-05-29T21:22:05.101290807+10:00" level=error msg="Could not get ipvs family information from the kernel. It is possible that ipvs is not enabled in your kernel. Native loadbalan
cing will not work until this is fixed."

 

@CHBMB based on the above it looks like it may be the ipvs stuff. I will not have too much time till the weekend to do more testing but could it be that the kernel modules are not loaded? Is there a way to confirm that if they are loaded? To test this before i just copied the files you provided over the top of the files on the flash drive. Is that all i needed to do? I know that broke my nvidia support in docker so i assumed that worked. Sorry know basic linux and can get around but it come from windows so the more advance stuff i don't know as it also seems to change based on the distro for a lot of things.

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@CHBMB i also tried the link you send to is to check the kernel config but could not get it work as it could not dins /proc/config.gz

 

I also found some info to check on ipvs checks but the 2 commands they suggest returned nothing where as one of them should have listed ip_vs if it was loaded from what i can tell.

This is what i tried but maybe i am doing it wrong

root@Tower:~# modprobe ip_vs
modprobe: FATAL: Module ip_vs not found in directory /lib/modules/4.19.43-Unraid
root@Tower:~# wget https://github.com/moby/moby/raw/master/contrib/check-config.sh
--2019-05-30 21:23:03--  https://github.com/moby/moby/raw/master/contrib/check-config.sh
Resolving github.com (github.com)... 13.237.44.5
Connecting to github.com (github.com)|13.237.44.5|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://raw.githubusercontent.com/moby/moby/master/contrib/check-config.sh [following]
--2019-05-30 21:23:03--  https://raw.githubusercontent.com/moby/moby/master/contrib/check-config.sh
Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 151.101.28.133
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|151.101.28.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10314 (10K) [text/plain]
Saving to: ‘check-config.sh’

check-config.sh                                                      100%[====================================================================================================================================================================>]  10.07K  --.-KB/s    in 0.001s  

2019-05-30 21:23:04 (9.15 MB/s) - ‘check-config.sh’ saved [10314/10314]

root@Tower:~# chmod +x check-config.sh
root@Tower:~# ./check-config.sh
warning: /proc/config.gz does not exist, searching other paths for kernel config ...
error: cannot find kernel config
  try running this script again, specifying the kernel config:
    CONFIG=/path/to/kernel/.config ./check-config.sh or ./check-config.sh /path/to/kernel/.config
root@Tower:~# zcat /proc/config.gz > kernel.config
gzip: /proc/config.gz: No such file or directory
root@Tower:~# grep -e ipvs -e nf_conntrack_ipv4 /lib/modules/$(uname -r)/modules.builtin
root@Tower:~# lsmod | grep -e ipvs -e nf_conntrack_ipv4

 

A few more things i tried

root@Tower:/lib/modules/4.19.43-Unraid# modprobe -- ip_vs
modprobe: FATAL: Module ip_vs not found in directory /lib/modules/4.19.43-Unraid

more /proc/modules
md_mod 49152 4 - Live 0xffffffffa009f000
igb 167936 0 - Live 0xffffffffa00b5000
i2c_algo_bit 16384 1 igb, Live 0xffffffffa000f000
sb_edac 24576 0 - Live 0xffffffffa025a000
x86_pkg_temp_thermal 16384 0 - Live 0xffffffffa0176000
intel_powerclamp 16384 0 - Live 0xffffffffa0044000
coretemp 16384 0 - Live 0xffffffffa002b000
kvm_intel 204800 0 - Live 0xffffffffa0957000
kvm 364544 1 kvm_intel, Live 0xffffffffa02a9000
crct10dif_pclmul 16384 0 - Live 0xffffffffa019a000
crc32_pclmul 16384 0 - Live 0xffffffffa024a000
crc32c_intel 24576 0 - Live 0xffffffffa0165000
ghash_clmulni_intel 16384 0 - Live 0xffffffffa001f000
pcbc 16384 0 - Live 0xffffffffa0030000
aesni_intel 200704 0 - Live 0xffffffffa0209000
aes_x86_64 20480 1 aesni_intel, Live 0xffffffffa015c000
crypto_simd 16384 1 aesni_intel, Live 0xffffffffa0036000
cryptd 20480 3 ghash_clmulni_intel,aesni_intel,crypto_simd, Live 0xffffffffa0019000
ipmi_ssif 24576 0 - Live 0xffffffffa0080000
megaraid_sas 131072 12 - Live 0xffffffffa0112000
glue_helper 16384 1 aesni_intel, Live 0xffffffffa0072000
i2c_i801 24576 0 - Live 0xffffffffa0079000
i2c_core 40960 4 igb,i2c_algo_bit,ipmi_ssif,i2c_i801, Live 0xffffffffa01fe000
intel_cstate 16384 0 - Live 0xffffffffa010d000
intel_uncore 102400 0 - Live 0xffffffffa017c000
ahci 40960 0 - Live 0xffffffffa0145000
nvme 32768 0 - Live 0xffffffffa013c000
intel_rapl_perf 16384 0 - Live 0xffffffffa008b000
nvme_core 45056 1 nvme, Live 0xffffffffa0057000
libahci 28672 1 ahci, Live 0xffffffffa0065000
wmi 20480 0 - Live 0xffffffffa0051000
acpi_power_meter 20480 0 - Live 0xffffffffa0025000
pcc_cpufreq 16384 0 - Live 0xffffffffa00b0000
ipmi_si 53248 0 - Live 0xffffffffa0091000
acpi_pad 20480 0 - Live 0xffffffffa0009000
button 16384 0 - Live 0xffffffffa0000000

also attached modules.builtin to show it is not there either which based on the post above suggests it is not in the kernel if i understand things correctly.

 

 

modules.builtin

Edited by seer_tenedos
Added more test results
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  • 1 year later...
  • 3 weeks later...
On 9/9/2020 at 6:53 PM, local.bin said:

+1 for docker swarm support, as unraid is great for basic docker tasks and running single instances, but having my 3 unraid servers working together to maintain uptime to my clients would be a real plus.

 

 

+1 here as well

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  • 3 weeks later...

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