Open kevalin opened 1 year ago
Hi @Kevalin It seems like you are debugging a crashed docker process rather than the node.js process. Can you confirm how you are running the docker container to obtain the node.js core dump?
I would expect to see something like the following.
Note the explicit volume mount so that the guest container can save to shared storage:
e.g. docker run --ulimit core=-1 --mount source=coredumps_volume,target=/cores ab3ca583c907 ./node command
And how the the host kernel.core_pattern is configured.
e.g. On the docker host run sysctl -n kernel.core_pattern
Hi @Kevalin It seems like you are debugging a crashed docker process rather than the node.js process. Can you confirm how you are running the docker container to obtain the node.js core dump?
I would expect to see something like the following. Note the explicit volume mount so that the guest container can save to shared storage: e.g.
docker run --ulimit core=-1 --mount source=coredumps_volume,target=/cores ab3ca583c907 ./node command
And how the the host kernel.core_pattern is configured. e.g. On the docker host run
sysctl -n kernel.core_pattern
Hello @No9
This is my docker host config
[root@xxx-0001 ~]# sysctl -n kernel.core_pattern
core
[root@xxx-0001 ~]# ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 63455
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 65535
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 63455
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
login in docker container
/app # sysctl -a | grep core
kernel.core_pattern = core
kernel.core_pipe_limit = 0
kernel.core_uses_pid = 1
App directory of docker container has mounted to host volume, so I can read core file on my host.
I use docker container to run Node.js apps. Sometimes, I got many core files, like this
core.33067
that It is about 650M size. So I copy the core files to my pc DebianOS, has same node version v14.16.0.I don't know anyone step is wrong. Do I use same os env to read core file? I don't know. Could u help me? Thanks.