Optimalisasi Server

** Optimalisasi Server **

Optimalkan file system ext4 untuk proxy

tune2fs -m 0 /dev/sda7

If you need to know your drives labels type the following:

mount|grep ^'/dev'

tune2fs -o journal_data_writeback /dev/sda7

Disabled fsck (file system check)

nano /etc/fstab
/cache-1  ext4  noatime,barrier=0,nodiratime,relatime,errors=remount-ro,data=writeback   0   0

Adjusting tcp sockets and limits

decrease TCP TIME_WAIT setting, the default value (60 in Debian 6) is too high and will result in too many sockets in TIME_WAIT stait. To decrease waiting time, execute following command:

echo 4 >> /proc/sys/net/ipv4/tcp_fin_timeout
mv /etc/sysctl.conf /etc/sysctl.conf_
touch /etc/sysctl.conf

echo "kernel.panic = 30
kernel.panic_on_oops = 30
kernel.sysrq = 0
kernel.core_uses_pid = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
fs.file-max = 65536
vm.swappiness = 10
vm.vfs_cache_pressure=50
vm.mmap_min_addr = 4096
vm.overcommit_ratio = 0
vm.overcommit_memory = 0
kernel.shmmax = 268435456
kernel.shmall = 268435456
vm.min_free_kbytes = 65536
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_syn_retries = 5
net.ipv4.tcp_synack_retries = 2
net.ipv4.tcp_max_syn_backlog = 4096
net.ipv4.ip_forward = 1
net.ipv4.conf.all.forwarding = 0
net.ipv4.conf.default.forwarding = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.all.log_martians = 0
net.ipv4.conf.default.log_martians = 0
net.ipv4.tcp_fin_timeout = 15
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_keepalive_intvl = 15
net.ipv4.conf.all.bootp_relay = 0
net.ipv4.conf.all.proxy_arp = 0
net.ipv4.tcp_dsack = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_fack = 1
net.ipv4.tcp_timestamps = 1
net.ipv4.icmp_echo_ignore_all = 0
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_ignore_bogus_error_responses = 1
net.ipv4.ip_local_port_range = 1024 65535
net.ipv4.tcp_rfc1337 = 1
net.ipv4.tcp_congestion_control = cubic
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_mem = 65536 131072 262144
net.ipv4.udp_mem = 65536 131072 262144
net.ipv4.tcp_rmem = 8192 87380 16777216
net.ipv4.udp_rmem_min = 16384
net.core.rmem_default = 87380
net.core.rmem_max = 16777216
net.ipv4.tcp_wmem = 8192 65536 16777216
net.ipv4.udp_wmem_min = 16384
net.core.wmem_default = 65536
net.core.wmem_max = 16777216
net.core.somaxconn = 32768
net.core.netdev_max_backlog = 4096
net.core.dev_weight = 64
net.core.optmem_max = 65536
net.ipv4.tcp_max_tw_buckets = 1440000
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_max_orphans = 16384
net.ipv4.tcp_orphan_retries = 0
net.ipv4.ipfrag_high_thresh = 512000
net.ipv4.ipfrag_low_thresh = 446464
net.ipv4.tcp_no_metrics_save = 1
net.ipv4.tcp_moderate_rcvbuf = 1
net.unix.max_dgram_qlen = 50
net.ipv4.neigh.default.gc_thresh3 = 2048
net.ipv4.neigh.default.gc_thresh2 = 1024
net.ipv4.neigh.default.gc_thresh1 = 32
net.ipv4.neigh.default.gc_interval = 30
net.ipv4.neigh.default.proxy_qlen = 96
net.ipv4.neigh.default.unres_qlen = 6
net.ipv4.tcp_ecn = 1
net.ipv4.tcp_reordering = 3
net.ipv4.tcp_retries2 = 15
net.ipv4.tcp_retries1 = 3" >> /etc/sysctl.conf

echo 65536 > /proc/sys/fs/file-max
echo "*         soft        nofile          65536" >> /etc/security/limits.conf
echo "*         hard        nofile          65536" >> /etc/security/limits.conf
echo "root      soft        nofile          65536" >> /etc/security/limits.conf
echo "root      hard        nofile          65536" >> /etc/security/limits.conf
echo "proxy     soft        nofile          65536" >> /etc/security/limits.conf
echo "proxy     hard        nofile          65536" >> /etc/security/limits.conf
echo "session required        pam_limits.so" >> /etc/pam.d/common-session

modprobe ip_tables
modprobe ip_conntrack
modprobe ip_conntrack_ftp
modprobe ip_conntrack_irc
modprobe iptable_nat
modprobe ip_nat_ftp

echo "ip_tables
ip_conntrack
ip_conntrack_ftp
ip_conntrack_irc
iptable_nat
ip_nat_ftp" >> /etc/modules

echo "ulimit -Hn 65536
ulimit -Sn 65535" >> /etc/profile