Ubuntu server 16.04 hangs at random for no reason
I am running a Bitbucket server in a Virtual machine over Ubuntu 16.04 server edition.
After the server starts, it runs for a while and suddenly stops responding. Doesn't let me in through SSH or directly through console (vmware console). I look into the CPU/Memory/Disk/Network utilizations to see if there is any abnormality leading up to the issue, but find nothing (CPU util is less than 35%, Memory util is less than 25%, disk and nw also seem pretty normal.
I looked into kernel log, syslog and don't find anything suspicious or any errors/warnings (except a couple of ntp unreachable errors that occur when the server was running).
I also go into the application (bitbucket) logs, but find nothing alarming there either.
At the moment, I am clueless on how to even debug the issue. Any pointers that you can think of?
Edit: Adding memory details as requested:
$ free -h
total used free shared buff/cache available
Mem: 15G 2.7G 11G 852K 951M 12G
Swap: 975M 0B 975M
$ swapon --show
NAME TYPE SIZE USED PRIO
/dev/dm-1 partition 976M 0B -2
server freeze
asked Dec 30 '18 at 2:28
hijk267129hijk267129
62
add a comment |
I am running a Bitbucket server in a Virtual machine over Ubuntu 16.04 server edition.
After the server starts, it runs for a while and suddenly stops responding. Doesn't let me in through SSH or directly through console (vmware console). I look into the CPU/Memory/Disk/Network utilizations to see if there is any abnormality leading up to the issue, but find nothing (CPU util is less than 35%, Memory util is less than 25%, disk and nw also seem pretty normal.
I looked into kernel log, syslog and don't find anything suspicious or any errors/warnings (except a couple of ntp unreachable errors that occur when the server was running).
I also go into the application (bitbucket) logs, but find nothing alarming there either.
At the moment, I am clueless on how to even debug the issue. Any pointers that you can think of?
Edit: Adding memory details as requested:
$ free -h
total used free shared buff/cache available
Mem: 15G 2.7G 11G 852K 951M 12G
Swap: 975M 0B 975M
$ swapon --show
NAME TYPE SIZE USED PRIO
/dev/dm-1 partition 976M 0B -2
server freeze
asked Dec 30 '18 at 2:28
hijk267129hijk267129
62
How much RAM? How much swap?free -h;swapon --show. Edit ( askubuntu.com/posts/1105506/edit ) your post to add (properly formatted) results, please. Don't respond with "Add Comment"
– waltinator
Dec 30 '18 at 5:23
add a comment |
I am running a Bitbucket server in a Virtual machine over Ubuntu 16.04 server edition.
After the server starts, it runs for a while and suddenly stops responding. Doesn't let me in through SSH or directly through console (vmware console). I look into the CPU/Memory/Disk/Network utilizations to see if there is any abnormality leading up to the issue, but find nothing (CPU util is less than 35%, Memory util is less than 25%, disk and nw also seem pretty normal.
I looked into kernel log, syslog and don't find anything suspicious or any errors/warnings (except a couple of ntp unreachable errors that occur when the server was running).
I also go into the application (bitbucket) logs, but find nothing alarming there either.
At the moment, I am clueless on how to even debug the issue. Any pointers that you can think of?
Edit: Adding memory details as requested:
$ free -h
total used free shared buff/cache available
Mem: 15G 2.7G 11G 852K 951M 12G
Swap: 975M 0B 975M
$ swapon --show
NAME TYPE SIZE USED PRIO
/dev/dm-1 partition 976M 0B -2
server freeze
asked Dec 30 '18 at 2:28
hijk267129hijk267129
62
I am running a Bitbucket server in a Virtual machine over Ubuntu 16.04 server edition.
After the server starts, it runs for a while and suddenly stops responding. Doesn't let me in through SSH or directly through console (vmware console). I look into the CPU/Memory/Disk/Network utilizations to see if there is any abnormality leading up to the issue, but find nothing (CPU util is less than 35%, Memory util is less than 25%, disk and nw also seem pretty normal.
I looked into kernel log, syslog and don't find anything suspicious or any errors/warnings (except a couple of ntp unreachable errors that occur when the server was running).
I also go into the application (bitbucket) logs, but find nothing alarming there either.
At the moment, I am clueless on how to even debug the issue. Any pointers that you can think of?
Edit: Adding memory details as requested:
$ free -h
total used free shared buff/cache available
Mem: 15G 2.7G 11G 852K 951M 12G
Swap: 975M 0B 975M
$ swapon --show
NAME TYPE SIZE USED PRIO
/dev/dm-1 partition 976M 0B -2
server freeze
server freeze
asked Dec 30 '18 at 2:28
hijk267129hijk267129
62
asked Dec 30 '18 at 2:28
hijk267129hijk267129
62
edited Dec 30 '18 at 14:44
hijk267129
asked Dec 30 '18 at 2:28
hijk267129hijk267129
62
asked Dec 30 '18 at 2:28
hijk267129hijk267129
62
asked Dec 30 '18 at 2:28
hijk267129hijk267129
62
62
How much RAM? How much swap?free -h;swapon --show. Edit ( askubuntu.com/posts/1105506/edit ) your post to add (properly formatted) results, please. Don't respond with "Add Comment"
– waltinator
Dec 30 '18 at 5:23
add a comment |
How much RAM? How much swap?free -h;swapon --show. Edit ( askubuntu.com/posts/1105506/edit ) your post to add (properly formatted) results, please. Don't respond with "Add Comment"
– waltinator
Dec 30 '18 at 5:23
How much RAM? How much swap?
free -h;swapon --show. Edit ( askubuntu.com/posts/1105506/edit ) your post to add (properly formatted) results, please. Don't respond with "Add Comment"– waltinator
Dec 30 '18 at 5:23
How much RAM? How much swap?
free -h;swapon --show. Edit ( askubuntu.com/posts/1105506/edit ) your post to add (properly formatted) results, please. Don't respond with "Add Comment"– waltinator
Dec 30 '18 at 5:23
add a comment |
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How much RAM? How much swap?
free -h;swapon --show. Edit ( askubuntu.com/posts/1105506/edit ) your post to add (properly formatted) results, please. Don't respond with "Add Comment"– waltinator
Dec 30 '18 at 5:23