pmp-check-unix-memory always in Critical

[AdriannaXTS]

Since a few days I have this Nagios check that is all the time in critical on machines that have been identified at least once as a donor node.

Both machines show the following performance :

Percona 1

top - 10:50:28 up 75 days, 17:43, 1 user, load average: 1.55, 1.42, 1.37
Tasks: 109 total, 1 running, 108 sleeping, 0 stopped, 0 zombie
Cpu(s): 17.9%us, 3.8%sy, 0.0%ni, 17.2%id, 60.5%wa, 0.0%hi, 0.7%si, 0.0%st
Mem: 1922716k total, 1851192k used, 71524k free, 141860k buffers
Swap: 983032k total, 918728k used, 64304k free, 287184k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6272 mysql 20 0 3102m 1.3g 84m S 21.6 71.4 2497:30 mysqld

Nagios Status

Status Information: CRIT OK Memory 74% used. Largest process: mysqld (6272) = 3102.95MB (165%)
Performance Data: memory_used=74;90;95;0;100

Percona2

top - 10:49:55 up 75 days, 17:09, 1 user, load average: 0.09, 0.08, 0.03
Tasks: 173 total, 1 running, 172 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.4%us, 0.5%sy, 0.0%ni, 98.9%id, 0.1%wa, 0.0%hi, 0.1%si, 0.0%st
Mem: 1922308k total, 1844232k used, 78076k free, 205240k buffers
Swap: 983032k total, 21720k used, 961312k free, 1112968k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
31677 mysql 20 0 1964m 467m 138m S 0.7 24.9 235:33.21 mysqld

Nagios Status

Status Information: CRIT OK Memory 27% used. Largest process: mysqld (31677) = 1964.93MB (104%)
Performance Data: memory_used=27;90;95;0;100

Please find below the configuration I have in file /etc/my.cnf

The MySQL server

[mysqld]
port = 3306
socket = /var/lib/mysql/mysql.sock
skip-external-locking
key_buffer_size = 384M
max_allowed_packet = 1M
table_open_cache = 512
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size = 32M

Try number of CPU’s*2 for thread_concurrency

thread_concurrency = 8
max_connections=1000000
max_connect_errors=1000000

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

Remove the next comment character if you are not familiar with SQL

#safe-updates

[myisamchk]
key_buffer_size = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M

Should I change any parameters?

[weber]

Install the latest version of the plugin where the override check for largest process VSIZE is disabled.
Or use “-d” option with the old version of the plugin.

[AdriannaXTS]

Hello Weber ,

Thanks for your answer , I juste add “-d” option. I’ll upgrade the plugin version later.