Sametime: Configurando o Sistema Operacional para o Sametime Proxy

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Configurando o SO

Criar diretórios de trabalho do ST Proxy

Procedimento:

1) Criar pasta no servidor hospedeiro do ST Proxy

# mkdir -p /opt/IBM/STTempDir/Transfer

/etc/security/limits.conf

Adicionar

root        soft     nofile  65535
root        hard     nofile  65535

Referência <ref>Increasing the number of open files on a Sametime server running on Linux</ref>

/etc/sysctl.conf

Adicionar

# Disable response to broadcasts.
# You don't want yourself becoming a Smurf amplifier.
net.ipv4.icmp_echo_ignore_broadcasts = 1
# enable route verification on all interfaces
net.ipv4.conf.all.rp_filter = 1
# enable ipV6 forwarding
# net.ipv6.conf.all.forwarding = 1
# increase the number of possible inotify(7) watches
fs.inotify.max_user_watches = 65536
# avoid deleting secondary IPs on deleting the primary IP
net.ipv4.conf.default.promote_secondaries = 1
net.ipv4.conf.all.promote_secondaries = 1
############# # Inicio das Configuracoes
net.ipv4.ip_forward = 0
net.ipv4.conf.default.accept_source_route = 0
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_rmem = 4096 87380 16777216
net.ipv4.tcp_wmem = 4096 65536 16777216
net.ipv4.tcp_fin_timeout = 15
net.core.netdev_max_backlog = 3000
net.ipv4.tcp_keepalive_intvl = 15
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_keepalive_time = 1800
net.ipv4.ip_local_port_range = 1024 65000

# disable SYN cookies
# Note: make sure this syncookies=1 item is commented out (it will already exist in this file).
net.ipv4.tcp_syncookies=0

# increase the TCP backlog to increase simultaneous new connection creation abilities
net.ipv4.tcp_max_syn_backlog = 200000
net.core.somaxconn = 200000

# increase and recycle TCP connection blocks for reuse in an optimal manner
net.ipv4.tcp_max_tw_buckets = 2000000

# disable Selective Acknowledgements for 1GBps networking
net.ipv4.tcp_sack = 0
net.ipv4.tcp_dsack = 0
net.ipv4.tcp_timestamps = 0

#increase kernel memory by doubling the default (check your system first!)
#the value of this item will be related to the memory in your system
vm.min_free_kbytes = 393216
vm.swappiness = 0

# manage the TCP network buffer sizings
net.core.netdev_max_backlog = 200000
############# # Fim das Configuracoes

Referências: <ref>ITuning IBM System x Servers for Performance</ref> , <ref>IBM Sametime wiki : Tuning : Sametime 8.5.2 Tuning Guide</ref>


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