How to install docker-ce in lxc container in pve
At now, Proxmox is base debian and it can be install docker directly. To install docker in host without proxmox support. It will be lost HA function.
Deploy a vm then install docker-ce in the vm, it works. but take a lot resource than directly install docker in proxmox.
Is there a way to take less performance ,at the same time we cant easly mange it with proxmox ?The answer is run docker in lxc.
Download lxc images
First thing first, Download Ubuntu 18.04.1 LXC images:
Option 1: Download LXC images from GUI
- Login your PVE;
- Follow the path to click the gui to redirect to the right lxc download page.
"Datacenter" | "$PVE_HOST" | "Local(PVE Storage)" | "Content" | "Templates" - select “ubuntu-18.04-standard”, then click download. wating for it finishd download the lxc image.
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| Virtual Environment 5.3-9
Search
Storage 'local' on node 'xa-sys-pve02'
Search:
Server View
Logs
()
starting template download from: http://download.proxmox.com/images/system/ubuntu-18.04-standard_18.04.1-1_amd64.tar.gz
target file: /var/lib/vz/template/cache/ubuntu-18.04-standard_18.04.1-1_amd64.tar.gz
--2019-04-08 13:44:03-- http://download.proxmox.com/images/system/ubuntu-18.04-standard_18.04.1-1_amd64.tar.gz
Resolving download.proxmox.com (download.proxmox.com)... 94.136.30.185, 2a01:7e0:0:424::249
Connecting to download.proxmox.com (download.proxmox.com)|94.136.30.185|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 213430501 (204M) [application/octet-stream]
Saving to: '/var/lib/vz/template/cache/ubuntu-18.04-standard_18.04.1-1_amd64.tar.gz.tmp.31383'
0K ........ ........ ........ ........ ........ ........ 1% 99.8K 34m17s
3072K ........ ........ ........ ........ ........ ........ 2% 220K 24m34s
6144K ........ ........ ........ ........ ........ ........ 4% 214K 21m18s
...
193536K ........ ........ ........ ........ ........ ........ 94% 180K 53s
196608K ........ ........ ........ ........ ........ ........ 95% 410K 39s
199680K ........ ........ ........ ........ ........ ........ 97% 206K 25s
202752K ........ ........ ........ ........ ........ ........ 98% 311K 11s
205824K ........ ........ ........ ........ ........ 100% 338K=15m15s
2019-04-08 13:59:21 (228 KB/s) - '/var/lib/vz/template/cache/ubuntu-18.04-standard_18.04.1-1_amd64.tar.gz.tmp.31383' saved [213430501/213430501]
download finished
TASK OK
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Option 2: Download LXC with shell
####Fix Perl LC_ALL ERROR
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| export LANGUAGE=en_US.UTF-8
export LANG=en_US.UTF-8
export LC_ALL=en_US.UTF-8
#locale-gen en_US.UTF-8
cat >> /etc/environment <<EOF
LC_ALL=en_US.UTF-8
LANG=en_US.UTF-8
EOF
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####list linux container
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| pveam available --section system
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| system alpine-3.7-default_20180913_amd64.tar.xz
system alpine-3.8-default_20180913_amd64.tar.xz
system alpine-3.9-default_20190224_amd64.tar.xz
system archlinux-base_20190124-1_amd64.tar.gz
system centos-6-default_20161207_amd64.tar.xz
system centos-7-default_20171212_amd64.tar.xz
system debian-8.0-standard_8.11-1_amd64.tar.gz
system debian-9.0-standard_9.7-1_amd64.tar.gz
system fedora-28-default_20180907_amd64.tar.xz
system fedora-29-default_20181126_amd64.tar.xz
system gentoo-current-default_20180906_amd64.tar.xz
system opensuse-15.0-default_20180907_amd64.tar.xz
system opensuse-42.3-default_20171214_amd64.tar.xz
system ubuntu-14.04-standard_14.04.5-1_amd64.tar.gz
system ubuntu-16.04-standard_16.04.5-1_amd64.tar.gz
system ubuntu-18.04-standard_18.04.1-1_amd64.tar.gz
system ubuntu-18.10-standard_18.10-2_amd64.tar.gz
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####Download images
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| pveam download local debian-9.0-standard_9.7-1_amd64.tar.gz
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List local images
Delete local image
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| pveam remove local:vztmpl/debian-8.0-standard_8.0-1_amd64.tar.gz
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Option 3: create a lxc from image
- “Datacenter” | select “$PVENODE” then right click it. | “Create CT”.
- Setup the LXC.
- General: “Unprivileged container” checked.
- When create the LXC container,selecited the contiainer and doubule click “Options” | “Features”.then make keyctl/Nesting/Fuse option check on.
- “Options” | “protecton” check on.
Option4: Install docker in LXC
- Boot the lxc container of ubuntu 18.04.
- Change ubuntu 18.04 apt source to mirrors.utsc.edu.cn
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| cat > /etc/apt/sources.list <<EOF
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
## Not recommended
# deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
# deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
EOF
apt update && apt -y upgrade
apt install -y vim net-tools
apt remove -y vim-tiny
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| apt-get install \
apt-transport-https \
ca-certificates \
curl \
gnupg-agent \
software-properties-common \
-y
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
apt-key fingerprint 0EBFCD88
sudo add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) \
stable"
sed -i 's/download.docker.com/mirrors.ustc.edu.cn\/docker-ce/g' /etc/apt/sources.list
apt-get update
apt-get install -y docker-ce docker-ce-cli containerd.io
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| root@template-docker-in-lxc:/etc/apt# docker -v
Docker version 18.09.4, build d14af54266
docker run hello-world
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| root@template-docker-in-lxc:/etc/apt# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete
Digest: sha256:2557e3c07ed1e38f26e389462d03ed943586f744621577a99efb77324b0fe535
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
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Install docker-compose
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sudo curl -L "https://github.com/docker/compose/releases/download/1.24.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
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Fixed root shell path cause login failed
When I setup zsh and set wrong zsh.then I cannot login and ssh
The error like this. I can not boot to single user mode.
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| Welcome to Ubuntu 18.04.2 LTS (GNU/Linux 4.15.18-12-pve x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
* Ubuntu's Kubernetes 1.14 distributions can bypass Docker and use containerd
directly, see https://bit.ly/ubuntu-containerd or try it now with
snap install microk8s --classic
* Canonical Livepatch is available for installation.
- Reduce system reboots and improve kernel security. Activate at:
https://ubuntu.com/livepatch
Cannot execute zsh: No such file or directory
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Solution: I wounder that is a a command like docker command docker exec -it $dockername /bin/sh
Bingo! Here we go:
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| lxc-attach -n $lxc_pid /bin/sh
#for example:
lxc-attach -n 103 /bin/sh
vi /etc/password
#then change root shell path to /bin/sh
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After reboot and I can login again.
Reference