How to lock some resource in a shared network namespace
I would like to implement the functionality similar to pid file but for network namespace. In common file namespace the process can lock pid file and ensure that no other process is running in the same file name space just by checking that it can receive write permission on it. I would like to have the same but for network namespace.
Consider a situation where applications run in different filename spaces but in the same network space (like two containers bridged directly to the host machine network namespace).
Instead of pid I would like to assign each process some abstract instance. No two processes with the same instance id and sharing the same network namespace should be able to run simultaneously.
Bind on some port would not do, as many applications should be able to bind on on the same port.
I encountered the mroute socket however it is used by pimd daemon.
Any ideas?
system-calls namespace network-namespaces
asked 11 hours ago
BorisBoris
1011
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I would like to implement the functionality similar to pid file but for network namespace. In common file namespace the process can lock pid file and ensure that no other process is running in the same file name space just by checking that it can receive write permission on it. I would like to have the same but for network namespace.
Consider a situation where applications run in different filename spaces but in the same network space (like two containers bridged directly to the host machine network namespace).
Instead of pid I would like to assign each process some abstract instance. No two processes with the same instance id and sharing the same network namespace should be able to run simultaneously.
Bind on some port would not do, as many applications should be able to bind on on the same port.
I encountered the mroute socket however it is used by pimd daemon.
Any ideas?
system-calls namespace network-namespaces
asked 11 hours ago
BorisBoris
1011
New contributor
Boris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Is your abstraction commonly called port, or am I missing something?
– Rui F Ribeiro
10 hours ago
@RuiFRibeiro No it is not port. It is just some number which is assigned to process by means of configuration. No two processes with the same number may run in the same network namespace.
– Boris
9 hours ago
add a comment |
I would like to implement the functionality similar to pid file but for network namespace. In common file namespace the process can lock pid file and ensure that no other process is running in the same file name space just by checking that it can receive write permission on it. I would like to have the same but for network namespace.
Consider a situation where applications run in different filename spaces but in the same network space (like two containers bridged directly to the host machine network namespace).
Instead of pid I would like to assign each process some abstract instance. No two processes with the same instance id and sharing the same network namespace should be able to run simultaneously.
Bind on some port would not do, as many applications should be able to bind on on the same port.
I encountered the mroute socket however it is used by pimd daemon.
Any ideas?
system-calls namespace network-namespaces
asked 11 hours ago
BorisBoris
1011
New contributor
Boris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I would like to implement the functionality similar to pid file but for network namespace. In common file namespace the process can lock pid file and ensure that no other process is running in the same file name space just by checking that it can receive write permission on it. I would like to have the same but for network namespace.
Consider a situation where applications run in different filename spaces but in the same network space (like two containers bridged directly to the host machine network namespace).
Instead of pid I would like to assign each process some abstract instance. No two processes with the same instance id and sharing the same network namespace should be able to run simultaneously.
Bind on some port would not do, as many applications should be able to bind on on the same port.
I encountered the mroute socket however it is used by pimd daemon.
Any ideas?
system-calls namespace network-namespaces
system-calls namespace network-namespaces
asked 11 hours ago
BorisBoris
1011
New contributor
Boris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 11 hours ago
BorisBoris
1011
New contributor
Boris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 11 hours ago
BorisBoris
1011
New contributor
Boris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 11 hours ago
BorisBoris
1011
asked 11 hours ago
BorisBoris
1011
1011
New contributor
Boris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Boris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Boris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Is your abstraction commonly called port, or am I missing something?
– Rui F Ribeiro
10 hours ago
@RuiFRibeiro No it is not port. It is just some number which is assigned to process by means of configuration. No two processes with the same number may run in the same network namespace.
– Boris
9 hours ago
add a comment |
Is your abstraction commonly called port, or am I missing something?
– Rui F Ribeiro
10 hours ago
@RuiFRibeiro No it is not port. It is just some number which is assigned to process by means of configuration. No two processes with the same number may run in the same network namespace.
– Boris
9 hours ago
Is your abstraction commonly called port, or am I missing something?
– Rui F Ribeiro
10 hours ago
Is your abstraction commonly called port, or am I missing something?
– Rui F Ribeiro
10 hours ago
@RuiFRibeiro No it is not port. It is just some number which is assigned to process by means of configuration. No two processes with the same number may run in the same network namespace.
– Boris
9 hours ago
@RuiFRibeiro No it is not port. It is just some number which is assigned to process by means of configuration. No two processes with the same number may run in the same network namespace.
– Boris
9 hours ago
add a comment |
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Is your abstraction commonly called port, or am I missing something?
– Rui F Ribeiro
10 hours ago
@RuiFRibeiro No it is not port. It is just some number which is assigned to process by means of configuration. No two processes with the same number may run in the same network namespace.
– Boris
9 hours ago