Ubuntu 16.04 Unresponsive every 10 minutes for 2 minutes
I have a Ubuntu server running Apache2 and Mysql 5.7 which has been working great for about a year and is acting oddly as of yesterday. It seemed to go offline for a few minutes and then it was back. It happened one more time later but then was fine.
During it's "downtime" I am unable to get mysql, ssh or apache to respond, but ping does.
I checked top to see what the server load was, and all numbers were low, so it didn't seem like it had just finished up a big job
top - 12:23:04 up 26 days, 21:59, 2 users, load average: 0.28, 0.18, 0.19
Tasks: 387 total, 1 running, 386 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.4 us, 0.2 sy, 0.0 ni, 99.4 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 82331792 total, 75453456 free, 5990408 used, 887928 buff/cache
KiB Swap: 19401728+total, 19397209+free, 45172 used. 75653488 avail Mem
The system has dual Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz has plenty of memory and the OS is on an LSI Megaraid with 4 disks in a RAID 10, the data directories are using a PCI SSD with excellent read-write speeds.
I thought maybe at first it was a DDoS attack, but checking like this:
netstat -an|grep ESTABLISHED|awk '{print $5}'|awk -F: '{print $1}'|sort|uniq -c|awk '{ printf("%st%st",$2,$1); for (i = 0; i < $1; i++) {printf("*")}; print ""}'
26 **************************
127.0.0.1 6 ******
204.23.45.6 2 **
34.237.124.252 1 *
61.72.21.21 8 ********
Nothing pops out to me. I tried pinging from another computer in the same cabinet using the public IP and there was never any lapse.
I checked the raid status and it is good, lots of free space as well.
While typing this out it froze 3-4 times, so trying to catch it in the act I started up top and set the refresh to 0.5 seconds and now it has been a couple hours without it freezing. What should I check next?
linux ubuntu apache-http-server freeze
edited Dec 14 at 21:46
DavidPostill♦
103k25223257
asked Dec 14 at 20:57
Alan
183210
add a comment |
I have a Ubuntu server running Apache2 and Mysql 5.7 which has been working great for about a year and is acting oddly as of yesterday. It seemed to go offline for a few minutes and then it was back. It happened one more time later but then was fine.
During it's "downtime" I am unable to get mysql, ssh or apache to respond, but ping does.
I checked top to see what the server load was, and all numbers were low, so it didn't seem like it had just finished up a big job
top - 12:23:04 up 26 days, 21:59, 2 users, load average: 0.28, 0.18, 0.19
Tasks: 387 total, 1 running, 386 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.4 us, 0.2 sy, 0.0 ni, 99.4 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 82331792 total, 75453456 free, 5990408 used, 887928 buff/cache
KiB Swap: 19401728+total, 19397209+free, 45172 used. 75653488 avail Mem
The system has dual Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz has plenty of memory and the OS is on an LSI Megaraid with 4 disks in a RAID 10, the data directories are using a PCI SSD with excellent read-write speeds.
I thought maybe at first it was a DDoS attack, but checking like this:
netstat -an|grep ESTABLISHED|awk '{print $5}'|awk -F: '{print $1}'|sort|uniq -c|awk '{ printf("%st%st",$2,$1); for (i = 0; i < $1; i++) {printf("*")}; print ""}'
26 **************************
127.0.0.1 6 ******
204.23.45.6 2 **
34.237.124.252 1 *
61.72.21.21 8 ********
Nothing pops out to me. I tried pinging from another computer in the same cabinet using the public IP and there was never any lapse.
I checked the raid status and it is good, lots of free space as well.
While typing this out it froze 3-4 times, so trying to catch it in the act I started up top and set the refresh to 0.5 seconds and now it has been a couple hours without it freezing. What should I check next?
linux ubuntu apache-http-server freeze
edited Dec 14 at 21:46
DavidPostill♦
103k25223257
asked Dec 14 at 20:57
Alan
183210
add a comment |
I have a Ubuntu server running Apache2 and Mysql 5.7 which has been working great for about a year and is acting oddly as of yesterday. It seemed to go offline for a few minutes and then it was back. It happened one more time later but then was fine.
During it's "downtime" I am unable to get mysql, ssh or apache to respond, but ping does.
I checked top to see what the server load was, and all numbers were low, so it didn't seem like it had just finished up a big job
top - 12:23:04 up 26 days, 21:59, 2 users, load average: 0.28, 0.18, 0.19
Tasks: 387 total, 1 running, 386 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.4 us, 0.2 sy, 0.0 ni, 99.4 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 82331792 total, 75453456 free, 5990408 used, 887928 buff/cache
KiB Swap: 19401728+total, 19397209+free, 45172 used. 75653488 avail Mem
The system has dual Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz has plenty of memory and the OS is on an LSI Megaraid with 4 disks in a RAID 10, the data directories are using a PCI SSD with excellent read-write speeds.
I thought maybe at first it was a DDoS attack, but checking like this:
netstat -an|grep ESTABLISHED|awk '{print $5}'|awk -F: '{print $1}'|sort|uniq -c|awk '{ printf("%st%st",$2,$1); for (i = 0; i < $1; i++) {printf("*")}; print ""}'
26 **************************
127.0.0.1 6 ******
204.23.45.6 2 **
34.237.124.252 1 *
61.72.21.21 8 ********
Nothing pops out to me. I tried pinging from another computer in the same cabinet using the public IP and there was never any lapse.
I checked the raid status and it is good, lots of free space as well.
While typing this out it froze 3-4 times, so trying to catch it in the act I started up top and set the refresh to 0.5 seconds and now it has been a couple hours without it freezing. What should I check next?
linux ubuntu apache-http-server freeze
edited Dec 14 at 21:46
DavidPostill♦
103k25223257
asked Dec 14 at 20:57
Alan
183210
I have a Ubuntu server running Apache2 and Mysql 5.7 which has been working great for about a year and is acting oddly as of yesterday. It seemed to go offline for a few minutes and then it was back. It happened one more time later but then was fine.
During it's "downtime" I am unable to get mysql, ssh or apache to respond, but ping does.
I checked top to see what the server load was, and all numbers were low, so it didn't seem like it had just finished up a big job
top - 12:23:04 up 26 days, 21:59, 2 users, load average: 0.28, 0.18, 0.19
Tasks: 387 total, 1 running, 386 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.4 us, 0.2 sy, 0.0 ni, 99.4 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 82331792 total, 75453456 free, 5990408 used, 887928 buff/cache
KiB Swap: 19401728+total, 19397209+free, 45172 used. 75653488 avail Mem
The system has dual Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz has plenty of memory and the OS is on an LSI Megaraid with 4 disks in a RAID 10, the data directories are using a PCI SSD with excellent read-write speeds.
I thought maybe at first it was a DDoS attack, but checking like this:
netstat -an|grep ESTABLISHED|awk '{print $5}'|awk -F: '{print $1}'|sort|uniq -c|awk '{ printf("%st%st",$2,$1); for (i = 0; i < $1; i++) {printf("*")}; print ""}'
26 **************************
127.0.0.1 6 ******
204.23.45.6 2 **
34.237.124.252 1 *
61.72.21.21 8 ********
Nothing pops out to me. I tried pinging from another computer in the same cabinet using the public IP and there was never any lapse.
I checked the raid status and it is good, lots of free space as well.
While typing this out it froze 3-4 times, so trying to catch it in the act I started up top and set the refresh to 0.5 seconds and now it has been a couple hours without it freezing. What should I check next?
linux ubuntu apache-http-server freeze
linux ubuntu apache-http-server freeze
edited Dec 14 at 21:46
DavidPostill♦
103k25223257
asked Dec 14 at 20:57
Alan
183210
edited Dec 14 at 21:46
DavidPostill♦
103k25223257
asked Dec 14 at 20:57
Alan
183210
edited Dec 14 at 21:46
DavidPostill♦
103k25223257
edited Dec 14 at 21:46
DavidPostill♦
103k25223257
edited Dec 14 at 21:46
DavidPostill♦
103k25223257
103k25223257
asked Dec 14 at 20:57
Alan
183210
asked Dec 14 at 20:57
Alan
183210
asked Dec 14 at 20:57
Alan
183210
183210
add a comment |
add a comment |
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