Why does a CentOS Docker container says it is Ubuntu?What is a docker container from Linux's point of view?When choosing a Docker container image file for my Ubuntu, what do I need to match between them?Cannot create “Hello World” module (and NVIDIA, and VirtualBox)How to get ondemand governor on fedoraDocker Container Volumes Synced LocallyMinimal install of CentOS 7 and ChromeCrontab in docker containerSeaFile docker container gives 502 Bad GatewayDocker container with Centos 7 and systemdHow to install OURLINK AC600 USB wireless adapter in kali linuxWhen choosing a Docker container image file for my Ubuntu, what do I need to match between them?Do `docker container rm` and `docker container kill` effectively achieve the same?
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Why does a CentOS Docker container says it is Ubuntu?
What is a docker container from Linux's point of view?When choosing a Docker container image file for my Ubuntu, what do I need to match between them?Cannot create “Hello World” module (and NVIDIA, and VirtualBox)How to get ondemand governor on fedoraDocker Container Volumes Synced LocallyMinimal install of CentOS 7 and ChromeCrontab in docker containerSeaFile docker container gives 502 Bad GatewayDocker container with Centos 7 and systemdHow to install OURLINK AC600 USB wireless adapter in kali linuxWhen choosing a Docker container image file for my Ubuntu, what do I need to match between them?Do `docker container rm` and `docker container kill` effectively achieve the same?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I am trying to verify When choosing a Docker container image file for my Ubuntu, what do I need to match between them?
On Lubuntu, a CentOS container says it is CentOS, by
$ sudo docker run centos bash -c "cat /etc/*-release "
CentOS Linux release 7.6.1810 (Core)
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"
CentOS Linux release 7.6.1810 (Core)
CentOS Linux release 7.6.1810 (Core)
but also says it is the same Ubuntu as the host:
$ sudo docker run centos bash -c "cat /proc/version"
Linux version 4.15.0-46-generic (buildd@lgw01-amd64-038) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #49-Ubuntu SMP Wed Feb 6 09:33:07 UTC 2019
$ cat /proc/version
Linux version 4.15.0-46-generic (buildd@lgw01-amd64-038) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #49-Ubuntu SMP Wed Feb 6 09:33:07 UTC 2019
I wonder why the two commands differ in OS distribution and kernel version?
Does a container share the same kernel as its host? If yes, should their kernel versions be the same? When choosing a Docker container image file for my Ubuntu, what do I need to match between them? says "you don't need to match distributions or kernel versions."
kernel docker proc version
edited Apr 5 at 18:30
G-Man
13.7k93770
asked Apr 5 at 16:37
TimTim
28.5k79269491
add a comment |
I am trying to verify When choosing a Docker container image file for my Ubuntu, what do I need to match between them?
On Lubuntu, a CentOS container says it is CentOS, by
$ sudo docker run centos bash -c "cat /etc/*-release "
CentOS Linux release 7.6.1810 (Core)
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"
CentOS Linux release 7.6.1810 (Core)
CentOS Linux release 7.6.1810 (Core)
but also says it is the same Ubuntu as the host:
$ sudo docker run centos bash -c "cat /proc/version"
Linux version 4.15.0-46-generic (buildd@lgw01-amd64-038) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #49-Ubuntu SMP Wed Feb 6 09:33:07 UTC 2019
$ cat /proc/version
Linux version 4.15.0-46-generic (buildd@lgw01-amd64-038) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #49-Ubuntu SMP Wed Feb 6 09:33:07 UTC 2019
I wonder why the two commands differ in OS distribution and kernel version?
Does a container share the same kernel as its host? If yes, should their kernel versions be the same? When choosing a Docker container image file for my Ubuntu, what do I need to match between them? says "you don't need to match distributions or kernel versions."
kernel docker proc version
edited Apr 5 at 18:30
G-Man
13.7k93770
asked Apr 5 at 16:37
TimTim
28.5k79269491
2
So you’ve asked a question, been given an answer, which you’ve accepted, but you don’t believe it?
– Stephen Kitt
Apr 5 at 17:34
I want to verify if a container and its host must have the same version of kernel, since they are said to share the same Linux kernel. I am not sure how to understand his comment.
– Tim
Apr 5 at 17:46
1
Have you looked at the resources I suggested here? I think that would help you understand all this better.
– Stephen Kitt
Apr 5 at 18:24
2
"Does a container share the same kernel as its host? If yes, should their kernel versions be the same?" Don't you even read your own post?
– 炸鱼薯条德里克
2 days ago
add a comment |
I am trying to verify When choosing a Docker container image file for my Ubuntu, what do I need to match between them?
On Lubuntu, a CentOS container says it is CentOS, by
$ sudo docker run centos bash -c "cat /etc/*-release "
CentOS Linux release 7.6.1810 (Core)
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"
CentOS Linux release 7.6.1810 (Core)
CentOS Linux release 7.6.1810 (Core)
but also says it is the same Ubuntu as the host:
$ sudo docker run centos bash -c "cat /proc/version"
Linux version 4.15.0-46-generic (buildd@lgw01-amd64-038) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #49-Ubuntu SMP Wed Feb 6 09:33:07 UTC 2019
$ cat /proc/version
Linux version 4.15.0-46-generic (buildd@lgw01-amd64-038) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #49-Ubuntu SMP Wed Feb 6 09:33:07 UTC 2019
I wonder why the two commands differ in OS distribution and kernel version?
Does a container share the same kernel as its host? If yes, should their kernel versions be the same? When choosing a Docker container image file for my Ubuntu, what do I need to match between them? says "you don't need to match distributions or kernel versions."
kernel docker proc version
edited Apr 5 at 18:30
G-Man
13.7k93770
asked Apr 5 at 16:37
TimTim
28.5k79269491
I am trying to verify When choosing a Docker container image file for my Ubuntu, what do I need to match between them?
On Lubuntu, a CentOS container says it is CentOS, by
$ sudo docker run centos bash -c "cat /etc/*-release "
CentOS Linux release 7.6.1810 (Core)
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"
CentOS Linux release 7.6.1810 (Core)
CentOS Linux release 7.6.1810 (Core)
but also says it is the same Ubuntu as the host:
$ sudo docker run centos bash -c "cat /proc/version"
Linux version 4.15.0-46-generic (buildd@lgw01-amd64-038) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #49-Ubuntu SMP Wed Feb 6 09:33:07 UTC 2019
$ cat /proc/version
Linux version 4.15.0-46-generic (buildd@lgw01-amd64-038) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #49-Ubuntu SMP Wed Feb 6 09:33:07 UTC 2019
I wonder why the two commands differ in OS distribution and kernel version?
Does a container share the same kernel as its host? If yes, should their kernel versions be the same? When choosing a Docker container image file for my Ubuntu, what do I need to match between them? says "you don't need to match distributions or kernel versions."
kernel docker proc version
kernel docker proc version
edited Apr 5 at 18:30
G-Man
13.7k93770
asked Apr 5 at 16:37
TimTim
28.5k79269491
edited Apr 5 at 18:30
G-Man
13.7k93770
asked Apr 5 at 16:37
TimTim
28.5k79269491
edited Apr 5 at 18:30
G-Man
13.7k93770
edited Apr 5 at 18:30
G-Man
13.7k93770
edited Apr 5 at 18:30
G-Man
13.7k93770
13.7k93770
asked Apr 5 at 16:37
TimTim
28.5k79269491
asked Apr 5 at 16:37
TimTim
28.5k79269491
asked Apr 5 at 16:37
TimTim
28.5k79269491
28.5k79269491
2
So you’ve asked a question, been given an answer, which you’ve accepted, but you don’t believe it?
– Stephen Kitt
Apr 5 at 17:34
I want to verify if a container and its host must have the same version of kernel, since they are said to share the same Linux kernel. I am not sure how to understand his comment.
– Tim
Apr 5 at 17:46
1
Have you looked at the resources I suggested here? I think that would help you understand all this better.
– Stephen Kitt
Apr 5 at 18:24
2
"Does a container share the same kernel as its host? If yes, should their kernel versions be the same?" Don't you even read your own post?
– 炸鱼薯条德里克
2 days ago
add a comment |
2
So you’ve asked a question, been given an answer, which you’ve accepted, but you don’t believe it?
– Stephen Kitt
Apr 5 at 17:34
I want to verify if a container and its host must have the same version of kernel, since they are said to share the same Linux kernel. I am not sure how to understand his comment.
– Tim
Apr 5 at 17:46
1
Have you looked at the resources I suggested here? I think that would help you understand all this better.
– Stephen Kitt
Apr 5 at 18:24
2
"Does a container share the same kernel as its host? If yes, should their kernel versions be the same?" Don't you even read your own post?
– 炸鱼薯条德里克
2 days ago
2
2
So you’ve asked a question, been given an answer, which you’ve accepted, but you don’t believe it?
– Stephen Kitt
Apr 5 at 17:34
So you’ve asked a question, been given an answer, which you’ve accepted, but you don’t believe it?
– Stephen Kitt
Apr 5 at 17:34
I want to verify if a container and its host must have the same version of kernel, since they are said to share the same Linux kernel. I am not sure how to understand his comment.
– Tim
Apr 5 at 17:46
I want to verify if a container and its host must have the same version of kernel, since they are said to share the same Linux kernel. I am not sure how to understand his comment.
– Tim
Apr 5 at 17:46
1
1
Have you looked at the resources I suggested here? I think that would help you understand all this better.
– Stephen Kitt
Apr 5 at 18:24
Have you looked at the resources I suggested here? I think that would help you understand all this better.
– Stephen Kitt
Apr 5 at 18:24
2
2
"Does a container share the same kernel as its host? If yes, should their kernel versions be the same?" Don't you even read your own post?
– 炸鱼薯条德里克
2 days ago
"Does a container share the same kernel as its host? If yes, should their kernel versions be the same?" Don't you even read your own post?
– 炸鱼薯条德里克
2 days ago
add a comment |
2 Answers
2
active
oldest
votes
cat /proc/version is showing kernel version. As containers run on the same kernel as the host. It is the same kernel as the host.
cat /etc/*-release is showing the distribution release. It is the OS version, minus the kernel.
A container is not virtualisation, in is an isolation system that runs directly on the Linux kernel. It uses the kernel name-spaces, and cgroups. Name-spaces allow separate networks, process ids, mount points, users, hostname, Inter-process-communication. cgroups allows limiting resources.
answered Apr 5 at 19:20
ctrl-alt-delorctrl-alt-delor
12.4k52661
add a comment |
- I can't find in the provided output the CentOS Kernel info, only the version release (7.6.1810);
- Yes, the container shares the kernel of the host machine.
Update: Check this answer.
answered Apr 5 at 16:57
JucaPiramaJucaPirama
20416
I don't understand the first point: It does not look like an answer, but I can't tell for sure, as it does not look like a sentence.
– ctrl-alt-delor
2 days ago
My (possibly incorrect) interpretation is that JucaPirama looked for a "differ(ence) in OS distribution and kernel version" and did not see any indication of a different kernel version in the /etc/release output.
– Jeff Schaller♦
2 days ago
English is not my mother language, so let me try again: I could not find in thecat /etc/*-releaseoutput nothing concerning Kernel Version (because it is not there). So, the question itself makes no sense.
– JucaPirama
9 hours ago
add a comment |
Your Answer
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
cat /proc/version is showing kernel version. As containers run on the same kernel as the host. It is the same kernel as the host.
cat /etc/*-release is showing the distribution release. It is the OS version, minus the kernel.
A container is not virtualisation, in is an isolation system that runs directly on the Linux kernel. It uses the kernel name-spaces, and cgroups. Name-spaces allow separate networks, process ids, mount points, users, hostname, Inter-process-communication. cgroups allows limiting resources.
answered Apr 5 at 19:20
ctrl-alt-delorctrl-alt-delor
12.4k52661
add a comment |
cat /proc/version is showing kernel version. As containers run on the same kernel as the host. It is the same kernel as the host.
cat /etc/*-release is showing the distribution release. It is the OS version, minus the kernel.
A container is not virtualisation, in is an isolation system that runs directly on the Linux kernel. It uses the kernel name-spaces, and cgroups. Name-spaces allow separate networks, process ids, mount points, users, hostname, Inter-process-communication. cgroups allows limiting resources.
answered Apr 5 at 19:20
ctrl-alt-delorctrl-alt-delor
12.4k52661
add a comment |
cat /proc/version is showing kernel version. As containers run on the same kernel as the host. It is the same kernel as the host.
cat /etc/*-release is showing the distribution release. It is the OS version, minus the kernel.
A container is not virtualisation, in is an isolation system that runs directly on the Linux kernel. It uses the kernel name-spaces, and cgroups. Name-spaces allow separate networks, process ids, mount points, users, hostname, Inter-process-communication. cgroups allows limiting resources.
answered Apr 5 at 19:20
ctrl-alt-delorctrl-alt-delor
12.4k52661
cat /proc/version is showing kernel version. As containers run on the same kernel as the host. It is the same kernel as the host.
cat /etc/*-release is showing the distribution release. It is the OS version, minus the kernel.
A container is not virtualisation, in is an isolation system that runs directly on the Linux kernel. It uses the kernel name-spaces, and cgroups. Name-spaces allow separate networks, process ids, mount points, users, hostname, Inter-process-communication. cgroups allows limiting resources.
answered Apr 5 at 19:20
ctrl-alt-delorctrl-alt-delor
12.4k52661
edited Apr 5 at 19:27
answered Apr 5 at 19:20
ctrl-alt-delorctrl-alt-delor
12.4k52661
answered Apr 5 at 19:20
ctrl-alt-delorctrl-alt-delor
12.4k52661
answered Apr 5 at 19:20
ctrl-alt-delorctrl-alt-delor
12.4k52661
12.4k52661
add a comment |
add a comment |
- I can't find in the provided output the CentOS Kernel info, only the version release (7.6.1810);
- Yes, the container shares the kernel of the host machine.
Update: Check this answer.
answered Apr 5 at 16:57
JucaPiramaJucaPirama
20416
I don't understand the first point: It does not look like an answer, but I can't tell for sure, as it does not look like a sentence.
– ctrl-alt-delor
2 days ago
My (possibly incorrect) interpretation is that JucaPirama looked for a "differ(ence) in OS distribution and kernel version" and did not see any indication of a different kernel version in the /etc/release output.
– Jeff Schaller♦
2 days ago
English is not my mother language, so let me try again: I could not find in thecat /etc/*-releaseoutput nothing concerning Kernel Version (because it is not there). So, the question itself makes no sense.
– JucaPirama
9 hours ago
add a comment |
- I can't find in the provided output the CentOS Kernel info, only the version release (7.6.1810);
- Yes, the container shares the kernel of the host machine.
Update: Check this answer.
answered Apr 5 at 16:57
JucaPiramaJucaPirama
20416
I don't understand the first point: It does not look like an answer, but I can't tell for sure, as it does not look like a sentence.
– ctrl-alt-delor
2 days ago
My (possibly incorrect) interpretation is that JucaPirama looked for a "differ(ence) in OS distribution and kernel version" and did not see any indication of a different kernel version in the /etc/release output.
– Jeff Schaller♦
2 days ago
English is not my mother language, so let me try again: I could not find in thecat /etc/*-releaseoutput nothing concerning Kernel Version (because it is not there). So, the question itself makes no sense.
– JucaPirama
9 hours ago
add a comment |
- I can't find in the provided output the CentOS Kernel info, only the version release (7.6.1810);
- Yes, the container shares the kernel of the host machine.
Update: Check this answer.
answered Apr 5 at 16:57
JucaPiramaJucaPirama
20416
- I can't find in the provided output the CentOS Kernel info, only the version release (7.6.1810);
- Yes, the container shares the kernel of the host machine.
Update: Check this answer.
answered Apr 5 at 16:57
JucaPiramaJucaPirama
20416
edited Apr 5 at 17:14
answered Apr 5 at 16:57
JucaPiramaJucaPirama
20416
answered Apr 5 at 16:57
JucaPiramaJucaPirama
20416
answered Apr 5 at 16:57
JucaPiramaJucaPirama
20416
20416
I don't understand the first point: It does not look like an answer, but I can't tell for sure, as it does not look like a sentence.
– ctrl-alt-delor
2 days ago
My (possibly incorrect) interpretation is that JucaPirama looked for a "differ(ence) in OS distribution and kernel version" and did not see any indication of a different kernel version in the /etc/release output.
– Jeff Schaller♦
2 days ago
English is not my mother language, so let me try again: I could not find in thecat /etc/*-releaseoutput nothing concerning Kernel Version (because it is not there). So, the question itself makes no sense.
– JucaPirama
9 hours ago
add a comment |
I don't understand the first point: It does not look like an answer, but I can't tell for sure, as it does not look like a sentence.
– ctrl-alt-delor
2 days ago
My (possibly incorrect) interpretation is that JucaPirama looked for a "differ(ence) in OS distribution and kernel version" and did not see any indication of a different kernel version in the /etc/release output.
– Jeff Schaller♦
2 days ago
English is not my mother language, so let me try again: I could not find in thecat /etc/*-releaseoutput nothing concerning Kernel Version (because it is not there). So, the question itself makes no sense.
– JucaPirama
9 hours ago
I don't understand the first point: It does not look like an answer, but I can't tell for sure, as it does not look like a sentence.
– ctrl-alt-delor
2 days ago
I don't understand the first point: It does not look like an answer, but I can't tell for sure, as it does not look like a sentence.
– ctrl-alt-delor
2 days ago
My (possibly incorrect) interpretation is that JucaPirama looked for a "differ(ence) in OS distribution and kernel version" and did not see any indication of a different kernel version in the /etc/release output.
– Jeff Schaller♦
2 days ago
My (possibly incorrect) interpretation is that JucaPirama looked for a "differ(ence) in OS distribution and kernel version" and did not see any indication of a different kernel version in the /etc/release output.
– Jeff Schaller♦
2 days ago
English is not my mother language, so let me try again: I could not find in the
cat /etc/*-release output nothing concerning Kernel Version (because it is not there). So, the question itself makes no sense.– JucaPirama
9 hours ago
English is not my mother language, so let me try again: I could not find in the
cat /etc/*-release output nothing concerning Kernel Version (because it is not there). So, the question itself makes no sense.– JucaPirama
9 hours ago
add a comment |
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So you’ve asked a question, been given an answer, which you’ve accepted, but you don’t believe it?
– Stephen Kitt
Apr 5 at 17:34
I want to verify if a container and its host must have the same version of kernel, since they are said to share the same Linux kernel. I am not sure how to understand his comment.
– Tim
Apr 5 at 17:46
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Have you looked at the resources I suggested here? I think that would help you understand all this better.
– Stephen Kitt
Apr 5 at 18:24
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"Does a container share the same kernel as its host? If yes, should their kernel versions be the same?" Don't you even read your own post?
– 炸鱼薯条德里克
2 days ago