Docker
6/28 vagrantfile 작성 및 haproxy, 스토리지 구성
- -
1899 curl -fsSL https://apt.releases.hashicorp.com/gpg | sudo apt-key add -
1907 sudo apt-add-repository "deb [arch=amd64] https://apt.releases.hashicorp.com $(lsb_release -cs) main"
1908 sudo apt-get update && sudo apt-get install vagrant 1902 mkdir -p vagrant/wp
1903 cd vagrant/
1904 cd wp
1905 code Vagrantfile
1906 vagrant up
<가상머신 설치하기>
#
# -*- mode: ruby -*-
# vi: set ft=ruby :
Vagrant.configure("2") do |config|
config.vm.define "web1" do |ubuntu|
ubuntu.vm.box = "ubuntu/focal64"
ubuntu.vm.hostname = "web1"
ubuntu.vm.network "private_network", ip: "192.168.200.11"
ubuntu.vm.provider "virtualbox" do |vb|
vb.name = "web1"
vb.cpus = 2
vb.memory = 2048
end
end
config.vm.define "web2" do |ubuntu|
ubuntu.vm.box = "ubuntu/focal64"
ubuntu.vm.hostname = "web2"
ubuntu.vm.network "private_network", ip: "192.168.200.12"
ubuntu.vm.provider "virtualbox" do |vb|
vb.name = "web2"
vb.cpus = 2
vb.memory = 2048
end
end
config.vm.define "lb" do |ubuntu|
ubuntu.vm.box = "ubuntu/focal64"
ubuntu.vm.hostname = "lb"
ubuntu.vm.network "private_network", ip: "192.168.200.10"
ubuntu.vm.provider "virtualbox" do |vb|
vb.name = "lb"
vb.cpus = 2
vb.memory = 2048
end
end
config.vm.define "db" do |ubuntu|
ubuntu.vm.box = "ubuntu/focal64"
ubuntu.vm.hostname = "db"
ubuntu.vm.network "private_network", ip: "192.168.200.15"
ubuntu.vm.provider "virtualbox" do |vb|
vb.name = "db"
vb.cpus = 2
vb.memory = 2048
end
end
config.vm.define "storage" do |ubuntu|
ubuntu.vm.box = "ubuntu/focal64"
ubuntu.vm.hostname = "storage"
ubuntu.vm.network "private_network", ip: "192.168.200.18"
ubuntu.vm.provider "virtualbox" do |vb|
vb.name = "storage"
vb.cpus = 2
vb.memory = 2048
end
end
end
*접속하는법
sudo ufw status
vargrant ssh web2(가상머신이름)
sudo su - root
1 sudo apt update
2 sudo apt install -y apache2
3 echo "web2" > /var/www/html/index.html
HAProxy - The Reliable, High Performance TCP/HTTP Load Balancer
HAProxy is a free, very fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications. It is particularly suited for very high traffic web sites and powers quite a number of the world's most visited
www.haproxy.org
Developer Roadmaps
Community driven roadmaps, articles, guides, quizzes, tips and resources for developers to learn from, identify their career paths, know what they don't know, find out the knowledge gaps, learn and improve.
roadmap.sh
vagrant ssh lb
1 sudo apt update
2 sudo apt search haproxy
3 sudo apt install haproxy
4 systemctl status haproxy
5 history
(base) student@cccr:~/vagrant/wp$ vagrant ssh lb
Welcome to Ubuntu 20.04.2 LTS (GNU/Linux 5.4.0-77-generic x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
System information as of Mon Jun 28 05:40:58 UTC 2021
System load: 0.0 Processes: 116
Usage of /: 3.2% of 38.71GB Users logged in: 0
Memory usage: 9% IPv4 address for enp0s3: 10.0.2.15
Swap usage: 0% IPv4 address for enp0s8: 192.168.200.10
1 update can be applied immediately.
To see these additional updates run: apt list --upgradable
vagrant@lb:~$ sudo apt update
Get:1 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]
Hit:2 http://archive.ubuntu.com/ubuntu focal InRelease
Get:3 http://archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Get:4 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages [741 kB]
Get:5 http://archive.ubuntu.com/ubuntu focal-backports InRelease [101 kB]
Get:6 http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages [8628 kB]
Get:7 http://security.ubuntu.com/ubuntu focal-security/main amd64 c-n-f Metadata [7960 B]
Get:8 http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages [628 kB]
Get:9 http://security.ubuntu.com/ubuntu focal-security/universe Translation-en [95.9 kB]
Get:10 http://security.ubuntu.com/ubuntu focal-security/universe amd64 c-n-f Metadata [11.6 kB]
Get:11 http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 Packages [19.9 kB]
Get:12 http://security.ubuntu.com/ubuntu focal-security/multiverse Translation-en [4316 B]
Get:13 http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 c-n-f Metadata [528 B]
Get:14 http://archive.ubuntu.com/ubuntu focal/universe Translation-en [5124 kB]
Get:15 http://archive.ubuntu.com/ubuntu focal/universe amd64 c-n-f Metadata [265 kB]
Get:16 http://archive.ubuntu.com/ubuntu focal/multiverse amd64 Packages [144 kB]
Get:17 http://archive.ubuntu.com/ubuntu focal/multiverse Translation-en [104 kB]
Get:18 http://archive.ubuntu.com/ubuntu focal/multiverse amd64 c-n-f Metadata [9136 B]
Get:19 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [1077 kB]
Get:20 http://archive.ubuntu.com/ubuntu focal-updates/main Translation-en [237 kB]
Get:21 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 c-n-f Metadata [13.6 kB]
Get:22 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [825 kB]
Get:23 http://archive.ubuntu.com/ubuntu focal-updates/universe Translation-en [172 kB]
Get:24 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 c-n-f Metadata [17.8 kB]
Get:25 http://archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 Packages [23.6 kB]
Get:26 http://archive.ubuntu.com/ubuntu focal-updates/multiverse Translation-en [6376 B]
Get:27 http://archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 c-n-f Metadata [648 B]
Get:28 http://archive.ubuntu.com/ubuntu focal-backports/main amd64 c-n-f Metadata [112 B]
Get:29 http://archive.ubuntu.com/ubuntu focal-backports/restricted amd64 c-n-f Metadata [116 B]
Get:30 http://archive.ubuntu.com/ubuntu focal-backports/universe amd64 Packages [4032 B]
Get:31 http://archive.ubuntu.com/ubuntu focal-backports/universe Translation-en [1448 B]
Get:32 http://archive.ubuntu.com/ubuntu focal-backports/universe amd64 c-n-f Metadata [224 B]
Get:33 http://archive.ubuntu.com/ubuntu focal-backports/multiverse amd64 c-n-f Metadata [116 B]
Fetched 18.5 MB in 8s (2460 kB/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
1 package can be upgraded. Run 'apt list --upgradable' to see it.
vagrant@lb:~$ sudo apt search haproxy
Sorting... Done
Full Text Search... Done
go-mmproxy/focal 1.0-1 amd64
Golang implementation of mmproxy
golang-github-armon-go-proxyproto-dev/focal 0.0~git20190211.68259f7-2 all
Golang package to handle HAProxy Proxy Protocol
haproxy/focal-updates 2.0.13-2ubuntu0.1 amd64
fast and reliable load balancing reverse proxy
haproxy-doc/focal-updates 2.0.13-2ubuntu0.1 all
fast and reliable load balancing reverse proxy (HTML documentation)
haproxy-log-analysis/focal 2.0~b0-2 all
analyse the HTTP logs generated by HAProxy
haproxyctl/focal 1.4.3-1 all
Utility to manage HAProxy
hitch/focal 1.5.2-1 amd64
scalable TLS proxy
libghc-io-streams-haproxy-dev/focal 1.0.1.0-2 amd64
HAProxy protocol 1.5 support for io-streams
libghc-io-streams-haproxy-doc/focal 1.0.1.0-2 all
HAProxy protocol 1.5 support for io-streams; documentation
libghc-io-streams-haproxy-prof/focal 1.0.1.0-2 amd64
HAProxy protocol 1.5 support for io-streams; profiling libraries
libprotocol-websocket-perl/focal 0.26-2 all
Perl library that implements WebSocket protocol
nagios-plugins-contrib/focal 25.20191015+1ubuntu1 amd64
Plugins for nagios compatible monitoring systems
postgresql-12-bgw-replstatus/focal 1.0.4 amd64
report whether PostgreSQL node is master or standby
prometheus-haproxy-exporter/focal 0.9.0+git20180917+ds-1 amd64
HAProxy Exporter for Prometheus
puppet-module-puppetlabs-haproxy/focal 2.1.0-1 all
Puppet module for HAProxy
python3-haproxy-log-analysis/focal 2.0~b0-2 all
generate aggregate statistics from HAProxy HTTP logs (Python 3)
vim-haproxy/focal-updates 2.0.13-2ubuntu0.1 all
syntax highlighting for HAProxy configuration files
vagrant@lb:~$ sudo apt install haproxy
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
liblua5.3-0
Suggested packages:
vim-haproxy haproxy-doc
The following NEW packages will be installed:
haproxy liblua5.3-0
0 upgraded, 2 newly installed, 0 to remove and 1 not upgraded.
Need to get 1635 kB of archives.
After this operation, 3777 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://archive.ubuntu.com/ubuntu focal/main amd64 liblua5.3-0 amd64 5.3.3-1.1ubuntu2 [116 kB]
Get:2 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 haproxy amd64 2.0.13-2ubuntu0.1 [1519 kB]
Fetched 1635 kB in 3s (636 kB/s)
Selecting previously unselected package liblua5.3-0:amd64.
(Reading database ... 63206 files and directories currently installed.)
Preparing to unpack .../liblua5.3-0_5.3.3-1.1ubuntu2_amd64.deb ...
Unpacking liblua5.3-0:amd64 (5.3.3-1.1ubuntu2) ...
Selecting previously unselected package haproxy.
Preparing to unpack .../haproxy_2.0.13-2ubuntu0.1_amd64.deb ...
Unpacking haproxy (2.0.13-2ubuntu0.1) ...
Setting up liblua5.3-0:amd64 (5.3.3-1.1ubuntu2) ...
Setting up haproxy (2.0.13-2ubuntu0.1) ...
Created symlink /etc/systemd/system/multi-user.target.wants/haproxy.service → /lib/systemd/system/haproxy.service.
Processing triggers for man-db (2.9.1-1) ...
Processing triggers for libc-bin (2.31-0ubuntu9.2) ...
Processing triggers for rsyslog (8.2001.0-1ubuntu1.1) ...
Processing triggers for systemd (245.4-4ubuntu3.7) ...
vagrant@lb:~$ systemctl status haproxy
● haproxy.service - HAProxy Load Balancer
Loaded: loaded (/lib/systemd/system/haproxy.service; enabled; vendor p>
Active: active (running) since Mon 2021-06-28 05:43:40 UTC; 35s ago
Docs: man:haproxy(1)
file:/usr/share/doc/haproxy/configuration.txt.gz
Main PID: 7168 (haproxy)
Tasks: 3 (limit: 2344)
Memory: 2.0M
CGroup: /system.slice/haproxy.service
├─7168 /usr/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg -p /r>
└─7169 /usr/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg -p /r>
vagrant@lb:~$ history
1 sudo apt update
2 sudo apt search haproxy
3 sudo apt install haproxy
4 systemctl status haproxy
5 history
vagrant@lb:~$ sudo -i
root@lb:~# cd /etc/haproxy/
root@lb:/etc/haproxy# ls
errors haproxy.cfg
root@lb:/etc/haproxy# vi
root@lb:/etc/haproxy# vi
root@lb:/etc/haproxy# vi haproxy.cfg
root@lb:/etc/haproxy# systemctl restart haproxy
root@lb:/etc/haproxy# systemctl status haproxy
● haproxy.service - HAProxy Load Balancer
Loaded: loaded (/lib/systemd/system/haproxy.service; enabled; vendor p>
Active: active (running) since Mon 2021-06-28 05:54:19 UTC; 7s ago
Docs: man:haproxy(1)
file:/usr/share/doc/haproxy/configuration.txt.gz
Process: 7938 ExecStartPre=/usr/sbin/haproxy -f $CONFIG -c -q $EXTRAOPT>
Main PID: 7947 (haproxy)
Tasks: 3 (limit: 2344)
Memory: 2.2M
CGroup: /system.slice/haproxy.service
├─7947 /usr/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg -p /r>
└─7953 /usr/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg -p /r>
Jun 28 05:54:19 lb systemd[1]: Starting HAProxy Load Balancer...
Jun 28 05:54:19 lb haproxy[7947]: Proxy http-in started.
Jun 28 05:54:19 lb haproxy[7947]: Proxy http-in started.
Jun 28 05:54:19 lb haproxy[7947]: Proxy backend_webserver started.
Jun 28 05:54:19 lb haproxy[7947]: [NOTICE] 178/055419 (7947) : New worker #>
Jun 28 05:54:19 lb haproxy[7947]: Proxy backend_webserver started.
Jun 28 05:54:19 lb systemd[1]: Started HAProxy Load Balancer.
root@lb:/etc/haproxy# <Vagrantfile 수정>
# -*- mode: ruby -*-
# vi: set ft=ruby :
Vagrant.configure("2") do |config|
config.vm.define "lb" do |ubuntu|
ubuntu.vm.box = "ubuntu/focal64"
ubuntu.vm.hostname = "lb"
ubuntu.vm.network "private_network", ip: "192.168.200.10"
ubuntu.vm.provider "virtualbox" do |vb|
vb.name = "lb"
vb.cpus = 2
vb.memory = 2048
end
end
config.vm.define "web1" do |ubuntu|
ubuntu.vm.box = "ubuntu/focal64"
ubuntu.vm.hostname = "web1"
ubuntu.vm.network "private_network", ip: "192.168.200.11"
ubuntu.vm.provider "virtualbox" do |vb|
vb.name = "web1"
vb.cpus = 2
vb.memory = 2048
end
end
config.vm.define "web2" do |ubuntu|
ubuntu.vm.box = "ubuntu/focal64"
ubuntu.vm.hostname = "web2"
ubuntu.vm.network "private_network", ip: "192.168.200.12"
ubuntu.vm.provider "virtualbox" do |vb|
vb.name = "web2"
vb.cpus = 2
vb.memory = 2048
end
end
config.vm.define "db" do |ubuntu|
ubuntu.vm.box = "ubuntu/focal64"
ubuntu.vm.hostname = "db"
ubuntu.vm.network "private_network", ip: "192.168.200.15"
ubuntu.vm.provider "virtualbox" do |vb|
vb.name = "db"
vb.cpus = 2
vb.memory = 2048
end
end
config.vm.define "storage" do |ubuntu|
ubuntu.vm.box = "ubuntu/focal64"
ubuntu.vm.hostname = "storage"
ubuntu.vm.network "private_network", ip: "192.168.200.18"
ubuntu.vm.provider "virtualbox" do |vb|
vb.name = "storage"
vb.cpus = 2
vb.memory = 2048
unless File.exist?('./.disk/nfs.vdi')
vb.customize ['createmedium', 'disk', '--filename', './.disk/nfs.vdi', '--size', 10240]
end
vb.customize ['storageattach', :id, '--storagectl', 'SCSI', '--port', 2, '--device', 0, '--type', 'hdd', '--medium', './.disk/nfs.vdi']
unless File.exist?('./.disk/iscsi.vdi')
vb.customize ['createmedium', 'disk', '--filename', './.disk/iscsi.vdi', '--size', 10240]
end
vb.customize ['storageattach', :id, '--storagectl', 'SCSI', '--port', 3, '--device', 0, '--type', 'hdd', '--medium', './.disk/iscsi.vdi']
end
end
end
(base) student@cccr:~/vagrant/wp$ vagrant reload storage
==> storage: Attempting graceful shutdown of VM...
==> storage: Checking if box 'ubuntu/focal64' version '20210624.0.0' is up to date...
==> storage: Clearing any previously set forwarded ports...
==> storage: Fixed port collision for 22 => 2222. Now on port 2203.
==> storage: Clearing any previously set network interfaces...
==> storage: Preparing network interfaces based on configuration...
storage: Adapter 1: nat
storage: Adapter 2: hostonly
==> storage: Forwarding ports...
storage: 22 (guest) => 2203 (host) (adapter 1)
==> storage: Running 'pre-boot' VM customizations...
==> storage: Booting VM...
==> storage: Waiting for machine to boot. This may take a few minutes...
storage: SSH address: 127.0.0.1:2203
storage: SSH username: vagrant
storage: SSH auth method: private key
==> storage: Machine booted and ready!
==> storage: Checking for guest additions in VM...
==> storage: Setting hostname...
==> storage: Configuring and enabling network interfaces...
==> storage: Mounting shared folders...
storage: /vagrant => /home/student/vagrant/wp
==> storage: Machine already provisioned. Run `vagrant provision` or use the `--provision`
==> storage: flag to force provisioning. Provisioners marked to run always will still run.
(base) student@cccr:~/vagrant/wp$ vagrant ssh storage
Welcome to Ubuntu 20.04.2 LTS (GNU/Linux 5.4.0-77-generic x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
System information as of Mon Jun 28 07:44:25 UTC 2021
System load: 0.15 Processes: 142
Usage of /: 4.7% of 38.71GB Users logged in: 0
Memory usage: 12% IPv4 address for enp0s3: 10.0.2.15
Swap usage: 0% IPv4 address for enp0s8: 192.168.200.18
* Super-optimized for small spaces - read how we shrank the memory
footprint of MicroK8s to make it the smallest full K8s around.
https://ubuntu.com/blog/microk8s-memory-optimisation
0 updates can be applied immediately.
Last login: Mon Jun 28 06:44:57 2021 from 10.0.2.2
vagrant@storage:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 55.5M 1 loop /snap/core18/2074
loop1 7:1 0 32.3M 1 loop /snap/snapd/12159
loop2 7:2 0 67.6M 1 loop /snap/lxd/20326
sda 8:0 0 40G 0 disk
└─sda1 8:1 0 40G 0 part /
sdb 8:16 0 10M 0 disk
sdc 8:32 0 10G 0 disk
sdd 8:48 0 10G 0 disk
vagrant@storage:~$ history
1 lsblk
2 vagrant reload storage
3 sudo apt upgrade
4 sudo apt install vagrant
5 apt install vagrant
6 sudo su - root
7 lsblk
8 sudo apt upgrade
9 lsblk
10 history
11 lsblk
12 sudo apt search targetcli
13 sudo apt install targetcli-fb
14 targetcli
15 systemctl status targetcli
16 sudo targetcli
17 vagrant ssh db
18 sudo targetcli
19 exit
20 lsblk
21 history
vagrant@storage:~$ sudo targetcli
targetcli shell version 2.1.51
Copyright 2011-2013 by Datera, Inc and others.
For help on commands, type 'help'.
/> /backstores/block create dev=/dev/sdd name=db
Created block storage object db using /dev/sdd.
/> ls
o- / ..................................................................................... [...]
o- backstores .......................................................................... [...]
| o- block .............................................................. [Storage Objects: 1]
| | o- db ........................................ [/dev/sdd (10.0GiB) write-thru deactivated]
| | o- alua ............................................................... [ALUA Groups: 1]
| | o- default_tg_pt_gp ................................... [ALUA state: Active/optimized]
| o- fileio ............................................................. [Storage Objects: 0]
| o- pscsi .............................................................. [Storage Objects: 0]
| o- ramdisk ............................................................ [Storage Objects: 0]
o- iscsi ........................................................................ [Targets: 0]
o- loopback ..................................................................... [Targets: 0]
o- vhost ........................................................................ [Targets: 0]
o- xen-pvscsi ................................................................... [Targets: 0]
/> /iscsi create wwn=iqn.2021-06.com.cccr:storage
Created target iqn.2021-06.com.cccr:storage.
Created TPG 1.
Global pref auto_add_default_portal=true
Created default portal listening on all IPs (0.0.0.0), port 3260.
/> /iscsi/iqn.2021-06.com.cccr:storage/tpg1/acls create wwn=iqn.2021-06.com.cccr:db
Created Node ACL for iqn.2021-06.com.cccr:db
/> /iscsi/iqn.2021-06.com.cccr:storage/tpg1/luns create storage_object=/backstores/block/db lun=lun0
Created LUN 0.
Created LUN 0->0 mapping in node ACL iqn.2021-06.com.cccr:db
/>quit
> exit
vagrant@storage:~$ sudo systemctl enable rtslib-fb-targetctl
vagrant@storage:~$ sudo systemctl enable rtslib-fb-targetctl
Synchronizing state of rtslib-fb-targetctl.service with SysV service script with /lib/systemd/systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable rtslib-fb-targetctl
Created symlink /etc/systemd/system/multi-user.target.wants/rtslib-fb-targetctl.service → /lib/systemd/system/rtslib-fb-targetctl.service.
vagrant@storage:~$ sudo -i
root@storage:~# exit
logout
vagrant@storage:~$ sudo -i
root@storage:~# mkdir /mnt/nfs
root@storage:~# mkfs -t ext4 /dev/sdc
mke2fs 1.45.5 (07-Jan-2020)
Creating filesystem with 2621440 4k blocks and 655360 inodes
Filesystem UUID: c9e1c5c4-4dfb-4e3b-9b2c-6a4186ce5a86
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632
Allocating group tables: done
Writing inode tables: done
Creating journal (16384 blocks): done
Writing superblocks and filesystem accounting information: done
root@storage:~# mount /dev/sdc -o _netdev /mnt/nfs
root@storage:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 977M 0 977M 0% /dev
tmpfs 199M 964K 198M 1% /run
/dev/sda1 39G 1.9G 37G 5% /
tmpfs 994M 0 994M 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 994M 0 994M 0% /sys/fs/cgroup
/dev/loop0 56M 56M 0 100% /snap/core18/2074
/dev/loop1 33M 33M 0 100% /snap/snapd/12159
/dev/loop2 68M 68M 0 100% /snap/lxd/20326
vagrant 117G 43G 75G 37% /vagrant
tmpfs 199M 0 199M 0% /run/user/1000
/dev/sdc 9.8G 37M 9.3G 1% /mnt/nfs
root@storage:~# vi /etc/fstab
/dev/sdc /mnt/nfs ext4 _netdev 0 0
root@storage:~# mount -a
root@storage:~#
(base) student@cccr:~$ cd vagrant
(base) student@cccr:~/vagrant$ cd wp
(base) student@cccr:~/vagrant/wp$ vagrant ssh db
Welcome to Ubuntu 20.04.2 LTS (GNU/Linux 5.4.0-77-generic x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
System information as of Mon Jun 28 07:24:11 UTC 2021
System load: 0.0 Processes: 114
Usage of /: 3.6% of 38.71GB Users logged in: 0
Memory usage: 10% IPv4 address for enp0s3: 10.0.2.15
Swap usage: 0% IPv4 address for enp0s8: 192.168.200.15
* Super-optimized for small spaces - read how we shrank the memory
footprint of MicroK8s to make it the smallest full K8s around.
https://ubuntu.com/blog/microk8s-memory-optimisation
1 update can be applied immediately.
To see these additional updates run: apt list --upgradable
vagrant@db:~$ cd /etc/iscsi
vagrant@db:/etc/iscsi$ sudo cat i
cat: i: No such file or directory
vagrant@db:/etc/iscsi$ audo apy search open-iscsi
Command 'audo' not found, did you mean:
command 'aldo' from deb aldo (0.7.7-1build2)
command 'udo' from deb udo (6.4.1-5)
command 'sudo' from deb sudo (1.8.31-1ubuntu1.2)
command 'sudo' from deb sudo-ldap (1.8.31-1ubuntu1.2)
Try: apt install <deb name>
vagrant@db:/etc/iscsi$ sudo apt search open-iscsi
Sorting... Done
Full Text Search... Done
iscsiuio/focal-updates 2.0.874-7.1ubuntu6.2 amd64
iSCSI offloading daemon for QLogic devices
open-iscsi/focal-updates,now 2.0.874-7.1ubuntu6.2 amd64 [installed,automatic]
iSCSI initiator tools
vagrant@db:/etc/iscsi$ ls
initiatorname.iscsi iscsid.conf
vagrant@db:/etc/iscsi$ sudo vi initiatorname.iscsi
vagrant@db:/etc/iscsi$ sudo cat initiatorname.iscsi
InitiatorName=iqn.2021-06.com.cccr:db
vagrant@db:/etc/iscsi$ sudo iscsiadm -m discovery -t st -p 192.168.200.18
192.168.200.18:3260,1 iqn.2021-06.com.cccr:storage
vagrant@db:/etc/iscsi$ sudo iscsiadm -m node -T iqn.2021-06.com.cccr:storage -l
Logging in to [iface: default, target: iqn.2021-06.com.cccr:storage, portal: 192.168.200.18,3260] (multiple)
Login to [iface: default, target: iqn.2021-06.com.cccr:storage, portal: 192.168.200.18,3260] successful.
vagrant@db:/etc/iscsi$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 55.5M 1 loop /snap/core18/2074
loop1 7:1 0 67.6M 1 loop /snap/lxd/20326
loop2 7:2 0 32.3M 1 loop /snap/snapd/12159
sda 8:0 0 40G 0 disk
└─sda1 8:1 0 40G 0 part /
sdb 8:16 0 10M 0 disk
sdc 8:32 0 10G 0 disk
vagrant@db:/etc/iscsi$
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