memcahced perl管理工具 memcached-tool
#!/usr/bin/perl # # memcached-tool: # stats/management tool for memcached. # # Author: # Brad Fitzpatrick <[email protected]> # # Contributor: # Andrey Niakhaichyk <[email protected]> # # License: # public domain. I give up all rights to this # tool. modify and copy at will. # use strict; use IO::Socket::INET; my $addr = shift; my $mode = shift || "display"; my ($from, $to); if ($mode eq "display") { undef $mode if @ARGV; } elsif ($mode eq "move") { $from = shift; $to = shift; undef $mode if $from < 6 || $from > 17; undef $mode if $to < 6 || $to > 17; print STDERR "ERROR: parameters out of range\n\n" unless $mode; } elsif ($mode eq 'dump') { ; } elsif ($mode eq 'stats') { ; } elsif ($mode eq 'settings') { ; } elsif ($mode eq 'sizes') { ; } else { undef $mode; } undef $mode if @ARGV; die "Usage: memcached-tool <host[:port] | /path/to/socket> [mode]\n memcached-tool 10.0.0.5:11211 display # shows slabs memcached-tool 10.0.0.5:11211 # same. (default is display) memcached-tool 10.0.0.5:11211 stats # shows general stats memcached-tool 10.0.0.5:11211 settings # shows settings stats memcached-tool 10.0.0.5:11211 sizes # shows sizes stats memcached-tool 10.0.0.5:11211 dump # dumps keys and values WARNING! sizes is a development command. As of 1.4 it is still the only command which will lock your memcached instance for some time. If you have many millions of stored items, it can become unresponsive for several minutes. Run this at your own risk. It is roadmapped to either make this feature optional or at least speed it up. " unless $addr && $mode; my $sock; if ($addr =~ m:/:) { $sock = IO::Socket::UNIX->new( Peer => $addr, ); } else { $addr .= ':11211' unless $addr =~ /:\d+$/; $sock = IO::Socket::INET->new( PeerAddr => $addr, Proto => 'tcp', ); } die "Couldn't connect to $addr\n" unless $sock; if ($mode eq 'dump') { my %items; my $totalitems; print $sock "stats items\r\n"; while (<$sock>) { last if /^END/; if (/^STAT items:(\d*):number (\d*)/) { $items{$1} = $2; $totalitems += $2; } } print STDERR "Dumping memcache contents\n"; print STDERR " Number of buckets: " . scalar(keys(%items)) . "\n"; print STDERR " Number of items : $totalitems\n"; foreach my $bucket (sort(keys(%items))) { print STDERR "Dumping bucket $bucket - " . $items{$bucket} . " total items\n"; print $sock "stats cachedump $bucket $items{$bucket}\r\n"; my %keyexp; while (<$sock>) { last if /^END/; # return format looks like this # ITEM foo [6 b; 1176415152 s] if (/^ITEM (\S+) \[.* (\d+) s\]/) { $keyexp{$1} = $2; } } foreach my $k (keys(%keyexp)) { print $sock "get $k\r\n"; my $response = <$sock>; if ($response =~ /VALUE (\S+) (\d+) (\d+)/) { my $flags = $2; my $len = $3; my $val; read $sock, $val, $len; print "add $k $flags $keyexp{$k} $len\r\n$val\r\n"; # get the END $_ = <$sock>; $_ = <$sock>; } } } exit; } if ($mode eq 'stats') { my %items; print $sock "stats\r\n"; while (<$sock>) { last if /^END/; chomp; if (/^STAT\s+(\S*)\s+(.*)/) { $items{$1} = $2; } } printf ("#%-17s %5s %11s\n", $addr, "Field", "Value"); foreach my $name (sort(keys(%items))) { printf ("%24s %12s\n", $name, $items{$name}); } exit; } if ($mode eq 'settings') { my %items; print $sock "stats settings\r\n"; while (<$sock>) { last if /^END/; chomp; if (/^STAT\s+(\S*)\s+(.*)/) { $items{$1} = $2; } } printf ("#%-17s %5s %11s\n", $addr, "Field", "Value"); foreach my $name (sort(keys(%items))) { printf ("%24s %12s\n", $name, $items{$name}); } exit; } if ($mode eq 'sizes') { my %items; print $sock "stats sizes\r\n"; while (<$sock>) { last if /^END/; chomp; if (/^STAT\s+(\S*)\s+(.*)/) { $items{$1} = $2; } } printf ("#%-17s %5s %11s\n", $addr, "Size", "Count"); foreach my $name (sort(keys(%items))) { printf ("%24s %12s\n", $name, $items{$name}); } exit; } # display mode: my %items; # class -> { number, age, chunk_size, chunks_per_page, # total_pages, total_chunks, used_chunks, # free_chunks, free_chunks_end } print $sock "stats items\r\n"; my $max = 0; while (<$sock>) { last if /^END/; if (/^STAT items:(\d+):(\w+) (\d+)/) { $items{$1}{$2} = $3; } } print $sock "stats slabs\r\n"; while (<$sock>) { last if /^END/; if (/^STAT (\d+):(\w+) (\d+)/) { $items{$1}{$2} = $3; $max = $1; } } print " # Item_Size Max_age Pages Count Full? Evicted Evict_Time OOM\n"; foreach my $n (1..$max) { my $it = $items{$n}; next if (0 == $it->{total_pages}); my $size = $it->{chunk_size} < 1024 ? "$it->{chunk_size}B" : sprintf("%.1fK", $it->{chunk_size} / 1024.0); my $full = $it->{free_chunks_end} == 0 ? "yes" : " no"; printf("%3d %8s %9ds %7d %7d %7s %8d %8d %4d\n", $n, $size, $it->{age}, $it->{total_pages}, $it->{number}, $full, $it->{evicted}, $it->{evicted_time}, $it->{outofmemory}); }
使用方法：
将上述代码保存为memcached-tool文件.
查看memcached状态
[root@node1 ~]# perl Mem.pl 127.0.0.1:11211 # Item_Size Max_age Pages Count Full? Evicted Evict_Time OOM 1 96B 22304s 1 3 yes 0 0 0 2 120B 0s 1 0 yes 0 0 0
[root@node1 ~]# perl Mem.pl 127.0.0.1:11211 stats #127.0.0.1:11211 Field Value accepting_conns 1 auth_cmds 0 auth_errors 0 bytes 238 bytes_read 7154 bytes_written 139374 cas_badval 0 cas_hits 0 cas_misses 0 cmd_flush 1 cmd_get 50 cmd_set 67 cmd_touch 0 conn_yields 0 connection_structures 15 crawler_reclaimed 0 curr_connections 12 curr_items 3 decr_hits 30 decr_misses 0 delete_hits 2 delete_misses 0 evicted_unfetched 0 evictions 0 expired_unfetched 0 get_hits 36 get_misses 14 hash_bytes 524288 hash_is_expanding 0 hash_power_level 16 incr_hits 30 incr_misses 0 libevent 2.0.21-stable limit_maxbytes 33554432 listen_disabled_num 0 malloc_fails 0 pid 48154 pointer_size 64 reclaimed 1 reserved_fds 20 rusage_system 0.594909 rusage_user 1.153824 threads 4 time 1406887940 total_connections 175 total_items 59 touch_hits 0 touch_misses 0 uptime 26566 version 1.4.20