Lab 3.2 - LXC
I am trying to do the lxc lab and the command is not giving me the list of unprivileged containers. Similar problem to this thread . I am using a GCP instance, configured to the specifiaction of Lab 1.1.
lxc-create -t download -n unpriv-cont-userlxc-create: unpriv-cont-user: conf.c: chown_mapped_root: 3226 lxc-usernsexec failed: No such file or directory - Failed to open tt lxc-create: unpriv-cont-user: tools/lxc_create.c: main: 327 Failed to create container unpriv-cont-user
cat /etc/subuidlxd:100000:65536 root:100000:65536 ubuntu:165536:65536 mktbilling:231072:65536
cat /etc/subgidlxd:100000:65536 root:100000:65536 ubuntu:165536:65536 mktbilling:231072:65536
cat /etc/lxc/lxc-usernet# USERNAME TYPE BRIDGE COUNT mktbilling_gmail_com veth lxcbr0 10
cat ~/.config/lxc/default.conf lxc.net.0.type = veth lxc.net.0.link = lxcbr0 lxc.net.0.flags = up lxc.net.0.hwaddr = 00:16:3e:xx:xx:xx lxc.idmap = u 0 231072 65536 lxc.idmap = g 0 231072 65536
uname -vp#49~18.04.1-Ubuntu SMP Fri Jun 18 21:33:55 UTC 2021 x86_64
I even tried the suggestion by KevinCSmallwood
from the thread:
sudo lxc-create -t download -n unpriv-cont-user -- -d ubuntu -r xenial -a amd64Setting up the GPG keyring ERROR: Unable to fetch GPG key from keyserver lxc-create: unpriv-cont-user: lxccontainer.c: create_run_template: 1617 Failed to create container from template lxc-create: unpriv-cont-user: tools/lxc_create.c: main: 327 Failed to create container unpriv-cont-user
Comments
-
Hi @mkturner,
Did the
setfacl
command and /or the--keyserver
option not help to resolve your issue?Also, there seems to be a slight inconsistency with the content of
/etc/lxc/lxc-usernet
. Is the username entry correct?Regards,
-Chris0 -
@chrispokorni said:
Hi @mkturner,Did the
setfacl
command and /or the--keyserver
option not help to resolve your issue?Also, there seems to be a slight inconsistency with the content of
/etc/lxc/lxc-usernet
. Is the username entry correct?Regards,
-ChrisYes, I noticed that and thought it strange as well. I do have OS Login enabled, would that cause an issue?
whoami
mktbilling_gmail_com
So that's what i put in
lxc-usernet
.lxc-create -t download -n unpriv-cont-user -- --keyserver keyserver.ubuntu.com
lxc-create: unpriv-cont-user: conf.c: chown_mapped_root: 3226 lxc-usernsexec failed: No such file or directory - Failed to open tt lxc-create: unpriv-cont-user: tools/lxc_create.c: main: 327 Failed to create container unpriv-cont-user
id -u mktbilling_gmail_com
1073413225
setfacl -R -m u:1073413225:x ~/.local
lxc-create -t download -n unpriv-cont-userlxc-create: unpriv-cont-user: conf.c: chown_mapped_root: 3226 lxc-usernsexec failed: No such file or directory - Failed to open tt lxc-create: unpriv-cont-user: tools/lxc_create.c: main: 327 Failed to create container unpriv-cont-user
0 -
I figured it out.
id -u mktbilling
1001
So
mktbilling
andmktbilling_gmail_com
are two different users. That's when I realized I had enabled OS Login on this GCP instance and it probably created this new user. I disabled OS Login and ssh in as the mktbilling user. Then I tried the setfacl suggestion:setfacl -R -m u:$(id -u mktbilling):x ~/.local
setfacl -R -m u:1001:x ~/.local
Still, errors with the lxc-create command
lxc-create -t download -n priv-contSetting up the GPG keyring ERROR: Unable to fetch GPG key from keyserver lxc-create: priv-cont: lxccontainer.c: create_run_template: 1617 Failed to create container from template lxc-create: priv-cont: tools/lxc_create.c: main: 327 Failed to create container priv-cont
Fixed by the suggestion of
proliant
in the other thread which recommends explicitly specifying key server
lxc-create -t download -n priv-cont -- --keyserver keyserver.ubuntu.comSetting up the GPG keyring
Downloading the image indexDIST RELEASE ARCH VARIANT BUILD
almalinux 8 amd64 default 20210719_23:08
almalinux 8 arm64 default 20210719_23:08
alpine 3.11 amd64 default 20210720_13:36
...Do you know why this is? If so please explain
0
Categories
- All Categories
- 154 LFX Mentorship
- 154 LFX Mentorship: Linux Kernel
- 665 Linux Foundation IT Professional Programs
- 319 Cloud Engineer IT Professional Program
- 141 Advanced Cloud Engineer IT Professional Program
- 54 DevOps Engineer IT Professional Program
- 120 Cloud Native Developer IT Professional Program
- 91 Express Training Courses
- 91 Express Courses - Discussion Forum
- 5.4K Training Courses
- 19 LFC110 Class Forum - Discontinued
- 12 LFC131 Class Forum
- 32 LFD102 Class Forum
- 191 LFD103 Class Forum
- 8 LFD110 Class Forum
- 24 LFD121 Class Forum
- 14 LFD133 Class Forum
- 14 LFD137 Class Forum
- 62 LFD201 Class Forum
- 2 LFD210 Class Forum
- 1 LFD210-CN Class Forum
- 1 LFD213 Class Forum - Discontinued
- 127 LFD232 Class Forum - Discontinued
- LFD233 Class Forum
- LFD237 Class Forum
- 22 LFD254 Class Forum
- 644 LFD259 Class Forum
- 107 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 7 LFD273 Class Forum
- 2 LFS101 Class Forum
- LFS112 Class Forum
- LFS116 Class Forum
- LFS118 Class Forum
- LFS142 Class Forum
- LFS144 Class Forum
- 2 LFS145 Class Forum
- LFS146 Class Forum
- LFS151 Class Forum
- LFS157 Class Forum
- LFS158 Class Forum
- LFS162 Class Forum
- LFS166 Class Forum
- LFS167 Class Forum
- LFS170 Class Forum
- LFS171 Class Forum
- LFS178 Class Forum
- LFS180 Class Forum
- LFS182 Class Forum
- LFS183 Class Forum
- 28 LFS200 Class Forum
- 735 LFS201 Class Forum - Discontinued
- 1 LFS201-JP クラス フォーラム
- 13 LFS203 Class Forum
- 98 LFS207 Class Forum
- 299 LFS211 Class Forum
- 54 LFS216 Class Forum
- 47 LFS241 Class Forum
- 41 LFS242 Class Forum
- 36 LFS243 Class Forum
- 12 LFS244 Class Forum
- LFS245 Class Forum
- 42 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- LFS251 Class Forum
- 141 LFS253 Class Forum
- LFS254 Class Forum
- LFS255 Class Forum
- 4 LFS256 Class Forum
- LFS257 Class Forum
- 1.2K LFS258 Class Forum
- 9 LFS258-JP クラス フォーラム
- 110 LFS260 Class Forum
- 147 LFS261 Class Forum
- 39 LFS262 Class Forum
- 82 LFS263 Class Forum - Discontinued
- 15 LFS264 Class Forum - Discontinued
- 11 LFS266 Class Forum - Discontinued
- 20 LFS267 Class Forum
- 18 LFS268 Class Forum
- 26 LFS269 Class Forum
- 198 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- LFS274 Class Forum
- 3 LFS281 Class Forum
- LFW111 Class Forum
- 254 LFW211 Class Forum
- 173 LFW212 Class Forum
- 9 SKF100 Class Forum
- SKF200 Class Forum
- 781 Hardware
- 198 Drivers
- 68 I/O Devices
- 37 Monitors
- 95 Multimedia
- 174 Networking
- 87 Printers & Scanners
- 83 Storage
- 742 Linux Distributions
- 80 Debian
- 66 Fedora
- 15 Linux Mint
- 13 Mageia
- 23 openSUSE
- 143 Red Hat Enterprise
- 31 Slackware
- 13 SUSE Enterprise
- 347 Ubuntu
- 451 Linux System Administration
- 31 Cloud Computing
- 69 Command Line/Scripting
- Github systems admin projects
- 89 Linux Security
- 77 Network Management
- 101 System Management
- 46 Web Management
- 51 Mobile Computing
- 17 Android
- 24 Development
- 1.2K New to Linux
- 1K Getting Started with Linux
- 357 Off Topic
- 109 Introductions
- 169 Small Talk
- 18 Study Material
- 504 Programming and Development
- 283 Kernel Development
- 203 Software Development
- 1.1K Software
- 210 Applications
- 180 Command Line
- 3 Compiling/Installing
- 398 Games
- 308 Installation
- 51 All In Program
- 51 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)