memcmon

summary

short: memcmon is a memcache server(s) monitor

long: memcmon is perl script for monitoring multiple memcached servers. It shows various stats (get hits/misses per second, items cached, etc.) refreshed every second and is easy to add more columns/stats if needed. Totals are also displayed. It uses ncurses.

dependencies

• perl + modules Curses and Time::HiRes
• nc
• linux (I've tested in only on Linux, but I guess it will run on everything that has echo and | pipes)

sample output

  
     memcmon v0.3

     server                  curr     gets   misses  cache    usage  usage    items   items   bytes    bytes     threads uptime  version
       IP                    conns    per/s  per/s  size(MB)  (MB)    (%)     cached  change  read(MB) write(MB)          in H
     =====================================================================================================================================
     mmc1                       67    4877    350     2048    25.36   1.24     62437   +149    0.22      1.80       4        0     1.4.5
     mmc2                       67    4726    235     3072   873.48  28.43   7421064   +68     0.21      1.84       4     1513     1.4.5
     mmc3                       82    5118    250     2048   148.23   7.24   1048378   +30     0.25      5.02       4     4224     1.4.5
     mmc4                       83    9127    219     2048   152.07   7.43   1074240    -3     0.29      2.13       4     4224     1.4.5
     mmc5                       82    5393    239     2048   145.59   7.11   1028383   +72     0.34     14.86       4     4224     1.4.5
     mmc6                       70    4526    278     2048   144.46   7.05    964018   +22     0.22      2.51       4     4224     1.4.5
     mmc7                       64    4776    229     2048   134.23   6.55    891740    +0     0.20     10.93       4     4224     1.4.5
     mmc8                       67    5280    213     2048   872.04  42.58   7411447   +19     0.21     15.15       4     2033     1.4.5
     mmc9                       66    4177    257     2048   160.63   7.84   1137405   +80     0.19      1.85       4     4224     1.4.5
     mmc10                      59    5675    237     2048   152.80   7.46   1084099   -21     0.23     48.76       4     4224     1.4.5
     mmc10:11212                10       0      0     2048     0.00   0.00         0    +0     0.00      0.00       4        2     1.4.5
     =====================================================================================================================================
     totals                    653   53610   2329    23552  2808.93 11.926  22123560   349     2.29    104.07       -       -        -
                                    95.83%  4.16%

     ** 1 second was : 1.001068

Change Log

version 0.4 ( 12 March 2012)

• fixed a bug that messed up version numbering on newer memcached versions

• fixed bug that messed up totals for multiple servers on the same host
• added bytes read/written per second in MB and totals
• added color to the output (green if server is fine, red if cannot connect)

• added totals below columns and other small changes

• initial release