How does glibc within a Docker image survive different container host kernels?
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Docker containers share the kernel of the host, but they do include their own applications and libraries. Is it correct that glibc is one of these libraries?
If so, how come there is no problem of glibc being incompatible with whatever kernel version the actual container host runs?
docker glibc portability
asked Jan 8 at 21:10
OvervOverv
1084
add a comment |
Docker containers share the kernel of the host, but they do include their own applications and libraries. Is it correct that glibc is one of these libraries?
If so, how come there is no problem of glibc being incompatible with whatever kernel version the actual container host runs?
docker glibc portability
asked Jan 8 at 21:10
OvervOverv
1084
Glibc and compatible kernel versions: unix.stackexchange.com/questions/9705/…
– Mark Plotnick
Jan 9 at 1:50
add a comment |
Docker containers share the kernel of the host, but they do include their own applications and libraries. Is it correct that glibc is one of these libraries?
If so, how come there is no problem of glibc being incompatible with whatever kernel version the actual container host runs?
docker glibc portability
asked Jan 8 at 21:10
OvervOverv
1084
Docker containers share the kernel of the host, but they do include their own applications and libraries. Is it correct that glibc is one of these libraries?
If so, how come there is no problem of glibc being incompatible with whatever kernel version the actual container host runs?
docker glibc portability
docker glibc portability
asked Jan 8 at 21:10
OvervOverv
1084
asked Jan 8 at 21:10
OvervOverv
1084
asked Jan 8 at 21:10
OvervOverv
1084
asked Jan 8 at 21:10
OvervOverv
1084
asked Jan 8 at 21:10
OvervOverv
1084
1084
Glibc and compatible kernel versions: unix.stackexchange.com/questions/9705/…
– Mark Plotnick
Jan 9 at 1:50
add a comment |
Glibc and compatible kernel versions: unix.stackexchange.com/questions/9705/…
– Mark Plotnick
Jan 9 at 1:50
Glibc and compatible kernel versions: unix.stackexchange.com/questions/9705/…
– Mark Plotnick
Jan 9 at 1:50
Glibc and compatible kernel versions: unix.stackexchange.com/questions/9705/…
– Mark Plotnick
Jan 9 at 1:50
add a comment |
1 Answer
1
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Linux kernel is rather binary compatible when considering apps. If you see an incompatibility, it is most likely caused by
a. CPU architecture mismatch (obviously unrelated to kernel version) or
b. Library issues. Apps typically depend on some libraries. If any of them is missing or incompatible, then the app will likely not work.
Sure, there are some APIs/ABIs in kernel that might change across versions., so kernel incompatibility might happen in theory. It just does not happen so often…
Kernel modules are a different story, level of compatibility across versions is AFAIK quite lower there. But you don't need a kernel module for glibc…
answered Jan 8 at 21:42
v6akv6ak
1916
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Linux kernel is rather binary compatible when considering apps. If you see an incompatibility, it is most likely caused by
a. CPU architecture mismatch (obviously unrelated to kernel version) or
b. Library issues. Apps typically depend on some libraries. If any of them is missing or incompatible, then the app will likely not work.
Sure, there are some APIs/ABIs in kernel that might change across versions., so kernel incompatibility might happen in theory. It just does not happen so often…
Kernel modules are a different story, level of compatibility across versions is AFAIK quite lower there. But you don't need a kernel module for glibc…
answered Jan 8 at 21:42
v6akv6ak
1916
add a comment |
Linux kernel is rather binary compatible when considering apps. If you see an incompatibility, it is most likely caused by
a. CPU architecture mismatch (obviously unrelated to kernel version) or
b. Library issues. Apps typically depend on some libraries. If any of them is missing or incompatible, then the app will likely not work.
Sure, there are some APIs/ABIs in kernel that might change across versions., so kernel incompatibility might happen in theory. It just does not happen so often…
Kernel modules are a different story, level of compatibility across versions is AFAIK quite lower there. But you don't need a kernel module for glibc…
answered Jan 8 at 21:42
v6akv6ak
1916
add a comment |
Linux kernel is rather binary compatible when considering apps. If you see an incompatibility, it is most likely caused by
a. CPU architecture mismatch (obviously unrelated to kernel version) or
b. Library issues. Apps typically depend on some libraries. If any of them is missing or incompatible, then the app will likely not work.
Sure, there are some APIs/ABIs in kernel that might change across versions., so kernel incompatibility might happen in theory. It just does not happen so often…
Kernel modules are a different story, level of compatibility across versions is AFAIK quite lower there. But you don't need a kernel module for glibc…
answered Jan 8 at 21:42
v6akv6ak
1916
Linux kernel is rather binary compatible when considering apps. If you see an incompatibility, it is most likely caused by
a. CPU architecture mismatch (obviously unrelated to kernel version) or
b. Library issues. Apps typically depend on some libraries. If any of them is missing or incompatible, then the app will likely not work.
Sure, there are some APIs/ABIs in kernel that might change across versions., so kernel incompatibility might happen in theory. It just does not happen so often…
Kernel modules are a different story, level of compatibility across versions is AFAIK quite lower there. But you don't need a kernel module for glibc…
answered Jan 8 at 21:42
v6akv6ak
1916
edited Jan 11 at 7:23
answered Jan 8 at 21:42
v6akv6ak
1916
answered Jan 8 at 21:42
v6akv6ak
1916
answered Jan 8 at 21:42
v6akv6ak
1916
1916
add a comment |
add a comment |
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Glibc and compatible kernel versions: unix.stackexchange.com/questions/9705/…
– Mark Plotnick
Jan 9 at 1:50