Question

nginx/1.4.6 (Ubuntu) server throwing 404 on all sites except just after reboot

My server just started thorwing 404 on all sites (I’m running a few wordpress installs). htop shows no peaks in server load and when I reboot all sites work for about 2 minutes before throwing 404 again. I’ve made no changes to the server.

Anyone excperienced this? All help greatly appreciated.

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@jens834585 we need to change your System. Here you go :

Before you start Snapshoot your Droplet

Paste this (at the end of the file) to /etc/sysctl.conf (using nano /etc/sysctl.conf) and save it (this change not only fixes your error it makes your System much better),

### IMPROVE SYSTEM MEMORY MANAGEMENT ###

# Increase size of file handles and inode cache
fs.file-max = 2097152

# Do less swapping
vm.swappiness = 10
vm.dirty_ratio = 60
vm.dirty_background_ratio = 2

### GENERAL NETWORK SECURITY OPTIONS ###

# Number of times SYNACKs for passive TCP connection.
net.ipv4.tcp_synack_retries = 2

# Allowed local port range
net.ipv4.ip_local_port_range = 2000 65535

# Protect Against TCP Time-Wait
net.ipv4.tcp_rfc1337 = 1

# Decrease the time default value for tcp_fin_timeout connection
net.ipv4.tcp_fin_timeout = 15

# Decrease the time default value for connections to keep alive
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_keepalive_intvl = 15

### TUNING NETWORK PERFORMANCE ###

# Default Socket Receive Buffer
net.core.rmem_default = 31457280

# Maximum Socket Receive Buffer
net.core.rmem_max = 12582912

# Default Socket Send Buffer
net.core.wmem_default = 31457280

# Maximum Socket Send Buffer
net.core.wmem_max = 12582912

# Increase number of incoming connections
net.core.somaxconn = 65535

# Increase number of incoming connections backlog
net.core.netdev_max_backlog = 65535

# Increase the maximum amount of option memory buffers
net.core.optmem_max = 25165824

# Increase the maximum total buffer-space allocatable
# This is measured in units of pages (4096 bytes)
net.ipv4.tcp_mem = 65535 131072 262144
net.ipv4.udp_mem = 65535 131072 262144

# Increase the read-buffer space allocatable
net.ipv4.tcp_rmem = 8192 87380 16777216
net.ipv4.udp_rmem_min = 16384

# Increase the write-buffer-space allocatable
net.ipv4.tcp_wmem = 8192 65535 16777216
net.ipv4.udp_wmem_min = 16384

# Increase the tcp-time-wait buckets pool size to prevent simple DOS attacks
net.ipv4.tcp_max_tw_buckets = 1440000
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1

Paste this (at the end of the file) to /etc/security/limits.conf (using nano /etc/security/limits.conf) and save it,

nginx           soft    nofile          2097152
nginx           hard    nofile          2097152
root            soft    nofile          2097152
root            hard    nofile          2097152
www-data        soft    nofile          2097152
www-data        hard    nofile          2097152

Paste this (at the end of the file) to /etc/pam.d/common-session (using nano /etc/pam.d/common-session) and save it,

session required pam_limits.so

Change listen.backlog in /etc/php5/fpm/pool.d/www.conf (using nano /etc/php5/fpm/pool.d/www.conf) and save it,

listen.backlog = 65535

Change worker_rlimit_nofile in /etc/nginx/nginx.conf (using nano /etc/nginx/nginx.conf) and save it,

worker_rlimit_nofile 99999;

And finally reboot

PS: If it works give a hearth to show me some love

Hi

I am facing same issue . tried all given in the forum yet it is showing 404 :’

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