WorkingTipsInRonggraphInLXD
Oct 22, 2020Technology
lxd environment
Install lxd(Offline):
snap download core
snap download core18
snap download lxd
snap ack core18_1885.assert; snap ack core_10185.assert; snap ack lxd_17936.assert
snap install core18_1885.snap ; snap install core_10185.snap ; snap install lxd_17936.snap
dpkg -i ./lxd_1%3a0.9_all.deb
which lxc
which lxd
Show lxc images:
root@rong320-1:~/lxd# lxc image list
If this is your first time running LXD on this machine, you should also run: lxd init
To start your first instance, try: lxc launch ubuntu:18.04
+-------+-------------+--------+-------------+--------------+------+------+-------------+
| ALIAS | FINGERPRINT | PUBLIC | DESCRIPTION | ARCHITECTURE | TYPE | SIZE | UPLOAD DATE |
+-------+-------------+--------+-------------+--------------+------+------+-------------+
Download lxd images:
https://us.images.linuxcontainers.org/images/alpine/3.12/amd64/default/20201021_13:00/
Download
rootfs.squashfs lxd.tar.xz
root@rong320-1:~/lxdimages# ls
lxd.tar.xz rootfs.squashfs
root@rong320-1:~/lxdimages# lxc image import lxd.tar.xz rootfs.squashfs --alias alpine312
Image imported with fingerprint: 76560d125792d7710d70f41b060e81f0bd4d83f1cc4e8dbd43fc371e5dea27bf
root@rong320-1:~/lxdimages# lxc image list
+-----------+--------------+--------+------------------------------------------+--------------+-----------+--------+------------------------------+
| ALIAS | FINGERPRINT | PUBLIC | DESCRIPTION | ARCHITECTURE | TYPE | SIZE | UPLOAD DATE |
+-----------+--------------+--------+------------------------------------------+--------------+-----------+--------+------------------------------+
| alpine312 | 76560d125792 | no | Alpinelinux 3.12 x86_64 (20201021_13:00) | x86_64 | CONTAINER | 2.40MB | Oct 22, 2020 at 3:48am (UTC) |
+-----------+--------------+--------+------------------------------------------+--------------+-----------+--------+------------------------------+
- Auto Config the lxd(https://discuss.linuxcontainers.org/t/usage-of-lxd-init-preseed/1069/3)
- (https://lxd.readthedocs.io/en/latest/preseed/)
cat <<EOF | lxd init --preseed
config:
core.https_address: 10.137.149.161:9199
images.auto_update_interval: 15
networks:
- name: lxdbr0
type: bridge
config:
ipv4.address: auto
ipv6.address: none
EOF
root@rong320-1:~/lxdimages# cat storages.yml
storage_pools:
- name: default
driver: dir
config:
source: ""
root@rong320-1:~/lxdimages# lxd init --preseed<./storages.yml
root@rong320-1:~/lxdimages# cat profiles.yml
profiles:
- name: default
devices:
root:
path: /
pool: default
type: disk
eth0:
nictype: bridged
parent: lxdbr0
type: nic
root@rong320-1:~/lxdimages# lxd init --preseed<profiles.yml
Now we could check the default lxd bridges(lxdbr0).
Docker/Docker-compose in alpine
Create a new profile named k8s:
# lxc launch alpine312 firstalpine -p k8s
Create the first alpine instance:
# lxc launch alpine312 firstalpine
Creating firstalpine
Starting firstalpine
# lxc ls
+-------------+---------+---------------------+------+-----------+-----------+
| NAME | STATE | IPV4 | IPV6 | TYPE | SNAPSHOTS |
+-------------+---------+---------------------+------+-----------+-----------+
| firstalpine | RUNNING | 10.31.47.210 (eth0) | | CONTAINER | 0 |
+-------------+---------+---------------------+------+-----------+-----------+
root@rong320-1:~/lxdimages# lxc exec firstalpine /bin/sh
~ # cat /etc/issue
Welcome to Alpine Linux 3.12
Kernel \r on an \m (\l)
Configure repository:
# echo "https://mirrors.aliyun.com/alpine/v3.12/main/" > /etc/apk/repositories
# echo "https://mirrors.aliyun.com/alpine/v3.12/community/" >> /etc/apk/repositories
# apk update
# apk add docker-engine docker-compose docker-cli
Create the cgroups-patch file under /etc/init.d:
#!/sbin/openrc-run
description="Mount the control groups for Docker"
depend()
{
keyword -docker
need sysfs cgroups
}
start()
{
if [ -d /sys/fs/cgroup ]; then
mkdir -p /sys/fs/cgroup/cpu,cpuacct
mkdir -p /sys/fs/cgroup/net_cls,net_prio
mount -n -t cgroup cgroup /sys/fs/cgroup/cpu,cpuacct -o rw,nosuid,nodev,noexec,relatime,cpu,cpuacct
mount -n -t cgroup cgroup /sys/fs/cgroup/net_cls,net_prio -o rw,nosuid,nodev,noexec,relatime,net_cls,net_prio
if ! mountinfo -q /sys/fs/cgroup/openrc; then
local agent="${RC_LIBEXECDIR}/sh/cgroup-release-agent.sh"
mkdir -p /sys/fs/cgroup/openrc
mount -n -t cgroup -o none,nodev,noexec,nosuid,name=systemd,release_agent="$agent" openrc /sys/fs/cgroup/openrc
fi
fi
return 0
}
Added the auto-start and reboot:
# rc-update add cgroups-patch boot
# vim /etc/init.d/docker
.....
start_pre() {
#checkpath -f -m 0644 -o root:docker "$DOCKER_ERRFILE" "$DOCKER_OUTFILE"
echo "fucku"
}
.....
# rc-service docker start
# rc-update add docker default
# reboot
After reboot, check docker version
push files into lxc instance:
# lxc file push -r podmanitems/ firstalpine/root/
load all images
# docker images
~ # docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
rong/ui master 66ad16eb15c5 20 minutes ago 28.9MB
rong/server master 8150777ead18 23 hours ago 301MB
rong/kobe master 2d0a03d6cedb 2 days ago 231MB
rong/nginx 1.19.2-amd64 7e4d58f0e5f3 5 weeks ago 133MB
rong/webkubectl v2.6.0-amd64 4aa634837fea 2 months ago 349MB
rong/mysql-server 8.0.21-amd64 8a3a24ad33be 3 months ago 366MB
# lxc file push ronggraph.tar firstalpine/root/
# tar xzvf /root/ronggraph.tar
Should write a start definition for ronggraph:
#!/sbin/openrc-run
#
# author: Yusuke Kawatsu
workspace="/root/ronggraph"
cmdpath="/usr/bin/docker-compose"
prog="ronggraph"
lockfile="/var/lock/ronggraph"
pidfile="/var/run/ronggraph.pid"
PATH="$PATH:/usr/local/bin"
start() {
[ -x $cmdpath ] || exit 5
echo -n $"Starting $prog: "
cd $workspace
$cmdpath up -d
$cmdpath down
retval=$?
pid=$!
echo
[ $retval -eq 0 ] && touch $lockfile && echo $pid > $pidfile
return $retval
}
stop() {
[ -x $cmdpath ] || exit 5
echo -n $"Stopping $prog: "
cd $workspace
$cmdpath down
retval=$?
echo
[ $retval -eq 0 ] && rm -f $lockfile && rm -f $pidfile
return $retval
}
restart() {
stop
sleep 3
start
}
depend() {
need docker
}
Now add ronggraph to default update:
# rc-update add ronggraph default
# halt
Save the current status:
root@rong320-1:~/lxdimages# lxc stop firstalpine
root@rong320-1:~/lxdimages# lxc publish --public firstalpine --alias=ronggraph
root@rong320-1:/mnt# lxc image ls
+-----------+--------------+--------+------------------------------------------+--------------+-----------+----------+------------------------------+
| ALIAS | FINGERPRINT | PUBLIC | DESCRIPTION | ARCHITECTURE | TYPE | SIZE | UPLOAD DATE |
+-----------+--------------+--------+------------------------------------------+--------------+-----------+----------+------------------------------+
| alpine312 | 76560d125792 | no | Alpinelinux 3.12 x86_64 (20201021_13:00) | x86_64
| CONTAINER | 2.40MB | Oct 22, 2020 at 6:18am (UTC) |
+-----------+--------------+--------+------------------------------------------+--------------+-----------+----------+------------------------------+
| ronggraph | b31788790460 | yes | Alpinelinux 3.12 x86_64 (20201021_13:00) | x86_64 | CONTAINER | 619.40MB | Oct 22, 2020 at 8:05am (UTC) |
+-----------+--------------+--------+------------------------------------------+--------------+-----------+----------+------------------------------+
launch new instance:
# lxc launch ronggraph ronggraph -p k8s
#
Add forward rules:
lxc config device add ronggraph myport80 proxy listen=tcp:0.0.0.0:80 connect=tcp:0.0.0.0:80
lxc config device add ronggraph myport443 proxy listen=tcp:0.0.0.0:443 connect=tcp:0.0.0.0:443
arm64 workingtips
Under rpi archlinux64, install:
# pacman -Sy
# pacman -S lxc lxd
# systemctl enable lxd
# systemctl start lxd
Download images from:
https://us.images.linuxcontainers.org/images/alpine/3.12/arm64/default/20201022_13:00/
rootfs.squashfs
lxd.tar.xz
# lxc image import lxd.tar.xz rootfs.squashfs --alias alpine312
# lxd init --preseed<pre-rong/lxditems/lxd_snap/init.yaml
# lxc profile create k8s
# lxc profile edit k8s<pre-rong/lxditems/lxdimages/k8s.yaml
Configure lxc for running:
https://wiki.archlinux.org/index.php/Linux_Containers
lxc Installation:
# ~ # sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories
~ # cat /etc/apk/repositories
http://mirrors.ustc.edu.cn/alpine/v3.12/main
http://mirrors.ustc.edu.cn/alpine/v3.12/community
Install docker/docker-compose, modify its startup
lxc public will take a very long time!!!
# lxc ls
+------+---------+------------------------------+------+-----------+-----------+
| NAME | STATE | IPV4 | IPV6 | TYPE | SNAPSHOTS |
+------+---------+------------------------------+------+-----------+-----------+
| king | RUNNING | 172.18.0.1 (br-74a26d2404f6) | | CONTAINER | 0 |
| | | 172.17.0.1 (docker0) | | | |
| | | 10.150.132.185 (eth0) | | | |
+------+---------+------------------------------+------+-----------+-----------+
# lxc publish --public king --alias=ronggraph
# lxc image ls
+-----------+--------------+--------+-------------------------------------------+--------------+-----------+-----------+-------------------------------+
| ALIAS | FINGERPRINT | PUBLIC | DESCRIPTION | ARCHITECTURE | TYPE | SIZE | UPLOAD DATE |
+-----------+--------------+--------+-------------------------------------------+--------------+-----------+-----------+-------------------------------+
| alpine312 | 58ebec92505e | no | Alpinelinux 3.12 aarch64 (20201022_13:00) | aarch64 | CONTAINER | 2.20MB | Oct 23, 2020 at 1:52am (UTC) |
+-----------+--------------+--------+-------------------------------------------+--------------+-----------+-----------+-------------------------------+
| ronggraph | 607287f518d4 | yes | Alpinelinux 3.12 aarch64 (20201022_13:00) | aarch64 | CONTAINER | 2655.15MB | Oct 23, 2020 at 10:13am (UTC) |
+-----------+--------------+--------+-------------------------------------------+--------------+-----------+-----------+-------------------------------+
# lxc image export ronggraph .
# ls *.tar.gz
-rw-r--r-- 1 root root 2784123072 Oct 26 00:40 607287f518d40783ed968cd2f2434fba101d4332ccc16f1e66cfb43049208d57.tar.gz
Transfer the tar.gz into the arm64 server, and run it.
# /snap/bin/lxc image import lxditems/lxdimages/607287f518d40783ed968cd2f2434fba101d4332ccc16f1e66cfb43049208d57.tar.gz --alias ronggraph
