Issue Docker - Connection refused

[magges]

Hello,

I just updated to Plesk Onyx and installed docker.

When trying to click on the "Docker" button on the panel I get the following error:

Fehler: Der Docker Dienst ist nicht verfügbar: Connection refused

roughly translated:

Error: The Docker service is not available: Connection refused

.

Following informations about my system:

$ plesk version

Product version: Plesk Onyx 17.0.17
Build date: 2016/11/17 16:00
OS version: Ubuntu 14.04
Revision: ab6766191d3ba26e7b21255ab007fc7fc56d84c6
Architecture: 64-bit
Wrapper version: 1.2

$ sudo service docker status

docker start/running, process 25081

docker.log:

time="2016-11-25T12:52:06.595267526+01:00" level=error msg="'overlay' not found as a supported filesystem on this host. Please ensure kernel is new enough and has overlay support loaded."
time="2016-11-25T12:52:06.597075143+01:00" level=info msg="Graph migration to content-addressability took 0.00 seconds"
time="2016-11-25T12:52:06.597573142+01:00" level=warning msg="Your kernel does not support oom control."
time="2016-11-25T12:52:06.597593438+01:00" level=warning msg="Your kernel does not support memory swappiness."
time="2016-11-25T12:52:06.597608185+01:00" level=warning msg="Your kernel does not support kernel memory limit."
time="2016-11-25T12:52:06.597620543+01:00" level=warning msg="Unable to find cpu cgroup in mounts"
time="2016-11-25T12:52:06.597660688+01:00" level=warning msg="Unable to find cpuset cgroup in mounts"
time="2016-11-25T12:52:06.597697857+01:00" level=warning msg="mountpoint for pids not found"
time="2016-11-25T12:52:06.597794226+01:00" level=fatal msg="Error starting daemon: Devices cgroup isn't mounted"
mount: wrong fs type, bad option, bad superblock on cgroup,
missing codepage or helper program, or other error
(for several filesystems (e.g. nfs, cifs) you might
need a /sbin/mount.<type> helper program)
In some cases useful info is found in syslog - try
dmesg | tail or so

/var/run/docker.sock is up
time="2016-11-25T12:52:06.649401287+01:00" level=info msg="libcontainerd: new containerd process, pid: 29372"

So I guess we have a problem with the filesystem here?

$ mount

/dev/vzfs on / type vzfs (rw,relatime)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
none on /dev type devtmpfs (rw,nosuid,noexec,relatime,mode=755)
none on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,nosuid,nodev,noexec,relatime)
none on /sys/fs/cgroup type tmpfs (rw,relatime,size=4k,mode=755)
none on /run type tmpfs (rw,nosuid,noexec,relatime,size=419432k,mode=755)
none on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
none on /run/shm type tmpfs (rw,relatime)
none on /run/user type tmpfs (rw,nosuid,nodev,noexec,relatime,size=102400k,mode=755)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,relatime,blkio,name=beancounter)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,relatime,memory)

$ lsb_release -a

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.5 LTS
Release: 14.04
Codename: trusty

$ uname -r

3.13.0-042stab113.21

What other steps could I do? Plesk doesn't say that there are any updates I have to do and I had no error while installing Docker.

Thanks in advance!

 

[UFHH01]

Hi magges,

pls. note the following:

time="2016-11-25T12:52:06.595267526+01:00" level=error msg="'overlay' not found as a supported filesystem on this host. Please ensure kernel is new enough and has overlay support loaded."
time="2016-11-25T12:52:06.597075143+01:00" level=info msg="Graph migration to content-addressability took 0.00 seconds"
time="2016-11-25T12:52:06.597573142+01:00" level=warning msg="Your kernel does not support oom control."
time="2016-11-25T12:52:06.597593438+01:00" level=warning msg="Your kernel does not support memory swappiness."
time="2016-11-25T12:52:06.597608185+01:00" level=warning msg="Your kernel does not support kernel memory limit."

To test, if your server meets the standard docker requirements, you are able to use for example:

=> https://github.com/docker/docker/blob/master/contrib/check-config.sh​

 

[magges]

I got the following output:

$ bash check-config.sh /boot/config-3.13.0-41-generic
info: reading kernel config from /boot/config-3.13.0-41-generic ...

Generally Necessary:
- cgroup hierarchy: properly mounted [/sys/fs/cgroup]
- CONFIG_NAMESPACES: enabled
- CONFIG_NET_NS: enabled
- CONFIG_PID_NS: enabled
- CONFIG_IPC_NS: enabled
- CONFIG_UTS_NS: enabled
- CONFIG_CGROUPS: enabled
- CONFIG_CGROUP_CPUACCT: enabled
- CONFIG_CGROUP_DEVICE: enabled
- CONFIG_CGROUP_FREEZER: enabled
- CONFIG_CGROUP_SCHED: enabled
- CONFIG_CPUSETS: enabled
- CONFIG_MEMCG: enabled
- CONFIG_KEYS: enabled
- CONFIG_VETH: enabled (as module)
- CONFIG_BRIDGE: enabled (as module)
- CONFIG_BRIDGE_NETFILTER: enabled
- CONFIG_NF_NAT_IPV4: enabled (as module)
- CONFIG_IP_NF_FILTER: enabled (as module)
- CONFIG_IP_NF_TARGET_MASQUERADE: enabled (as module)
- CONFIG_NETFILTER_XT_MATCH_ADDRTYPE: enabled (as module)
- CONFIG_NETFILTER_XT_MATCH_CONNTRACK: enabled (as module)
- CONFIG_NETFILTER_XT_MATCH_IPVS: enabled (as module)
- CONFIG_IP_NF_NAT: missing
- CONFIG_NF_NAT: enabled (as module)
- CONFIG_NF_NAT_NEEDED: enabled
- CONFIG_POSIX_MQUEUE: enabled
- CONFIG_DEVPTS_MULTIPLE_INSTANCES: enabled

Optional Features:
- CONFIG_USER_NS: enabled
- CONFIG_SECCOMP: enabled
- CONFIG_CGROUP_PIDS: missing
- CONFIG_MEMCG_SWAP: enabled
- CONFIG_MEMCG_SWAP_ENABLED: missing
(note that cgroup swap accounting is not enabled in your kernel config, you can enable it by setting boot option "swapaccount=1")
- CONFIG_MEMCG_KMEM: enabled
- CONFIG_RESOURCE_COUNTERS: enabled
- CONFIG_BLK_CGROUP: enabled
- CONFIG_BLK_DEV_THROTTLING: enabled
- CONFIG_IOSCHED_CFQ: enabled
- CONFIG_CFQ_GROUP_IOSCHED: enabled
- CONFIG_CGROUP_PERF: enabled
- CONFIG_CGROUP_HUGETLB: enabled
- CONFIG_NET_CLS_CGROUP: enabled (as module)
- CONFIG_NETPRIO_CGROUP: enabled (as module)
- CONFIG_CFS_BANDWIDTH: enabled
- CONFIG_FAIR_GROUP_SCHED: enabled
- CONFIG_RT_GROUP_SCHED: missing
- CONFIG_IP_VS: enabled (as module)
- CONFIG_IP_VS_NFCT: enabled
- CONFIG_IP_VS_RR: enabled (as module)
- CONFIG_EXT3_FS: missing
- CONFIG_EXT3_FS_XATTR: missing
- CONFIG_EXT3_FS_POSIX_ACL: missing
- CONFIG_EXT3_FS_SECURITY: missing
(enable these ext3 configs if you are using ext3 as backing filesystem)
- CONFIG_EXT4_FS: enabled
- CONFIG_EXT4_FS_POSIX_ACL: enabled
- CONFIG_EXT4_FS_SECURITY: enabled
- Network Drivers:
- "overlay":
- CONFIG_VXLAN: enabled (as module)
Optional (for encrypted networks):
- CONFIG_CRYPTO: enabled
- CONFIG_CRYPTO_AEAD: enabled (as module)
- CONFIG_CRYPTO_GCM: enabled (as module)
- CONFIG_CRYPTO_SEQIV: enabled (as module)
- CONFIG_CRYPTO_GHASH: enabled (as module)
- CONFIG_XFRM: enabled
- CONFIG_XFRM_USER: enabled (as module)
- CONFIG_XFRM_ALGO: enabled (as module)
- CONFIG_INET_ESP: enabled (as module)
- CONFIG_INET_XFRM_MODE_TRANSPORT: enabled (as module)
- "ipvlan":
- CONFIG_IPVLAN: missing
- "macvlan":
- CONFIG_MACVLAN: enabled (as module)
- CONFIG_DUMMY: enabled (as module)
- Storage Drivers:
- "aufs":
- CONFIG_AUFS_FS: enabled (as module)
- "btrfs":
- CONFIG_BTRFS_FS: enabled (as module)
- CONFIG_BTRFS_FS_POSIX_ACL: enabled
- "devicemapper":
- CONFIG_BLK_DEV_DM: enabled
- CONFIG_DM_THIN_PROVISIONING: enabled (as module)
- "overlay":
- CONFIG_OVERLAY_FS: missing
- "zfs":
- /dev/zfs: missing
- zfs command: missing
- zpool command: missing

Limits:
- /proc/sys/kernel/keys/root_maxkeys: 1000000

So I think the first thing to try would be upgrading the Kernel.

apt has Linux 4.2 available, is it safe to upgrade or might Plesk not work afterwards?

 

[UFHH01]

apt has Linux 4.2 available, is it safe to upgrade

It is safe and recommended!

 

[magges]

Thank you for your help UFHH01, I really appreciate it!

is `apt dist-upgrade` the correct way?

It wants to do the following:

The following packages were automatically installed and are no longer required:
linux-image-3.13.0-100-generic linux-image-3.13.0-96-generic
linux-image-3.13.0-98-generic linux-image-extra-3.13.0-100-generic
linux-image-extra-3.13.0-96-generic linux-image-extra-3.13.0-98-generic
python-chardet python-chardet-whl python-colorama python-colorama-whl
python-distlib python-distlib-whl python-html5lib python-html5lib-whl
python-pip python-pip-whl python-pkg-resources python-requests
python-requests-whl python-setuptools python-setuptools-whl python-six
python-six-whl python-urllib3 python-urllib3-whl python-virtualenv
Use 'apt-get autoremove' to remove them.
The following packages will be upgraded:
libwbclient0 log4cpp-plesk php5-ioncube-loader psa-logrotate
psa-mod-fcgid-configurator psa-spf2 psa-vps-optimized python-samba samba
samba-common samba-common-bin samba-dsdb-modules samba-libs sw-libmilter
sw-mariadb-client sw-tar
16 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

 

[UFHH01]

Hi magges,

as stated from your informations at your command line, you should consider to use the following commands:

apt-get clean && apt-get update
apt-get autoremove
apt-get dist-upgrade

( I always recommend to use "aptitude", because it often helps to choose a possible, alternative option, in case of dependencies issues! ):

apt-get clean && apt-get update
apt-get autoremove
aptitude upgrade