I continue to have cant connect issues with php and memcache connections Here is my memcache extension info
memcache memcache support => enabled Active persistent connections => 0 Version => 2.2.3 Revision => $Revision: 1.98 $ Directive => Local Value => Master Value memcache.allow_failover => 1 => 1 memcache.chunk_size => 8192 => 8192 memcache.default_port => 11211 => 11211 memcache.hash_function => fnv => fnv memcache.hash_strategy => standard => standard memcache.max_failover_attempts => 20 => 20 All my servers run memcache with this info stats STAT pid 10873 STAT uptime 1025398 STAT time 1212002320 STAT version 1.2.4 STAT pointer_size 32 STAT rusage_user 4369.616717 STAT rusage_system 8704.080778 STAT curr_items 881362 STAT total_items 107502215 STAT bytes 469183947 STAT curr_connections 1763 STAT total_connections 4640291 STAT connection_structures 3983 STAT cmd_get 140951340 STAT cmd_set 107413099 STAT get_hits 129967586 STAT get_misses 10983754 STAT evictions 809436 STAT bytes_read 137458144520 STAT bytes_written 311553302637 STAT limit_maxbytes 536870912 STAT threads 4 I have a pool of 32 servers. For some reason I keep getting constant cant connect error messages like this *memcache_pconnect(): Can't connect to 10.200.1.53:1024, Unknown error (0) *Its not related to a specific server it will randomly report one as cant connect. I've checked iptables already its not even running on the memcache server or the apache server iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination I even have unloaded the module from the kernel lsmod Module Size Used by autofs4 24389 2 hidp 23105 2 rfcomm 42457 0 l2cap 29633 10 hidp,rfcomm bluetooth 53925 5 hidp,rfcomm,l2cap sunrpc 144253 1 ipv6 251393 232 dm_multipath 21577 0 raid0 11841 0 video 19269 0 sbs 18533 0 backlight 10049 0 i2c_ec 9025 1 sbs button 10705 0 battery 13637 0 asus_acpi 19289 0 ac 9157 0 lp 15849 0 floppy 57125 0 intel_rng 9793 0 pcspkr 7105 0 i82875p_edac 10181 0 serio_raw 10693 0 edac_mc 24977 1 i82875p_edac parport_pc 29157 1 e1000 119505 0 i2c_i801 11469 0 parport 37513 2 lp,parport_pc e100 36809 0 ide_cd 40033 0 i2c_core 23745 2 i2c_ec,i2c_i801 mii 9409 1 e100 cdrom 36705 1 ide_cd dm_snapshot 20709 0 dm_zero 6209 0 dm_mirror 28741 0 dm_mod 58201 9 dm_multipath,dm_snapshot,dm_zero,dm_mirror ata_piix 18501 0 libata 115833 1 ata_piix sd_mod 24897 0 scsi_mod 132685 2 libata,sd_mod ext3 123337 2 jbd 56553 1 ext3 ehci_hcd 32973 0 ohci_hcd 23261 0 uhci_hcd 25421 0 If i go to the apache machine and do telnet to memcache machine i can connect without a problem and run stats or read a key. If anyone has any idea as to what causes this please help. Some info on the servers Linux fl1-9 2.6.18-53.el5 #1 SMP Mon Nov 12 02:22:48 EST 2007 i686 i686 i386 GNU/Linux CentOS release 5 (Final) 2 gigs of ram each. allocating 512 megs to memcache. they both run apache and memcache on them and are load balanced based on 1 minute avg load typical uptime on machines load average: 0.54, 0.73, 0.72 If you guys need any more information please let me know ill post it right away Thanks Tachu