saltstack的深入-增加针对系统调优的state配置
一、基础环境1、在tvm-saltmaster的基础上操作。
2、网络：
eth0：host-only（用于虚拟内网，手动固定IP，这样从宿主机可以直接连接到这个vm）
eth1：NAT（用于上外网，动态IP）
# cd /etc/sysconfig/network-scripts/
# cat ifcfg-eth0
DEVICE=eth0
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=none
IPADDR=192.168.56.253
PREFIX=24
GATEWAY=192.168.56.1
DNS1=192.168.56.254
# cat ifcfg-eth1
DEVICE=eth1
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=dhcp
DNS1=192.168.56.254
二、针对limits，sysctl，rc.local，modprobe做一些配置
1、sls文件
# cat abc/init.sls
include:
- abc.hosts
- abc.resolv
- abc.yum
- abc.packages
- abc.systemtuning
# cat abc/systemtuning.sls
## update sysctl
#
# via pc @ 2015/8/12
basic-limits:
file.managed:
- name: /etc/security/limits.d/my-limits.conf
- source: salt://conf.d/systemtuning/my-limits.conf
basic-sysctl:
file.append:
- name: /etc/sysctl.conf
- source: salt://conf.d/systemtuning/sysctl.conf
basic-rc-local:
file.append:
- name: /etc/rc.local
- source: salt://conf.d/systemtuning/rc-local.conf
basic-modprobe-dist:
file.append:
- name: /etc/modprobe.d/dist.conf
- source: salt://conf.d/systemtuning/modprobe-dist.conf
2、conf文件
# tail -n 100 conf.d/systemtuning/*
==> conf.d/systemtuning/modprobe-dist.conf <==
## user define
alias net-pf-10 off
alias ipv6 off
==> conf.d/systemtuning/my-limits.conf <==
## user define
* soft nofile 65535
* hard nofile 65535
* soft nproc unlimited
* hard nproc unlimited
* soft core unlimited
==> conf.d/systemtuning/rc-local.conf <==
## user define
ulimit -SHn 65535
==> conf.d/systemtuning/sysctl.conf <==
## user define
fs.file-max = 51200
net.core.rmem_max = 8388608
net.core.wmem_max = 8388608
net.core.rmem_default = 65536
net.core.wmem_default = 65536
net.core.netdev_max_backlog = 250000
net.core.somaxconn = 4096
net.ipv4.ip_local_port_range = 10000 65000
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 0
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_time = 1200
net.ipv4.tcp_max_syn_backlog = 8192
net.ipv4.tcp_max_tw_buckets = 5000
net.ipv4.tcp_rmem = 4096 87380 8388608
net.ipv4.tcp_wmem = 4096 65536 8388608
net.ipv4.tcp_mem = 8388608 8388608 8388608
三、总结
此处用到了以下方法：
file.managed
file.append
执行：
# salt 'tvm-test' state.sls abc.systemtuning --output-file='/tmp/salt.log'
或者：
# salt '*' state.highstate --output-file='/tmp/salt.log'
查看结果：
# more /tmp/salt.log
备注：上述所谓调优参数仅做参考，根据实际的业务场景来配置，切忌直接套用。
ZYXW、参考
1、官网doc
http://docs.saltstack.com/en/latest/ref/states/all/salt.states.file.html
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