ansible 效率优化,ansible优化
ansible 效率优化,ansible优化
ansible效率优化-开启ControlPersist
Posted by on 2014年7月12日 5 Comments前言
最近在推进ansible用于配置管理与自动部署,其中一个很困扰的问题是创建ssh通道很慢,虽然ansible在同一个task里面是并行的控制多台受控端.但是每一个task都需要和受控端创建ssh通道,非常影响效率.今天决定把它解决了.
看了一下官网,提及到了openssh的ControlPersist特性可以优化,查了一下,其实就是持久化socket,一次验证多次通信.并且只需要修改ssh client就行了.
支持这个特性需要比较新的openssh,那需要自己编译一个,那我们来自己弄个RPM包吧.
制作openssh rpm包
1.配置好编译机的环境
mkdir -pv /root/rpmbuild/{BUILD,BUILDROOT,RPMS,SOURCES,SPECS,SRPMS,TMP}
yum -y install tcp_wrappers tcp_wrappers-devel tcp_wrappers-libs openssl
2.制作rpm
cd /root/rpmbuild/SOURCES/.
wget http://mirror.team-cymru.org/pub/OpenBSD/OpenSSH/portable/openssh-6.6p1.tar.gz
wget http://mirror.team-cymru.org/pub/OpenBSD/OpenSSH/portable/openssh-6.6p1.tar.gz.asc
cd ../SPECS/
tar xfz ../SOURCES/openssh-6.6p1.tar.gz openssh-6.6p1/contrib/redhat/openssh.spec
mv openssh-6.6p1/contrib/redhat/openssh.spec openssh-6.6p1.spec
rm -rf openssh-6.6p1
sed -i -e "s/%define no_gnome_askpass 0/%define no_gnome_askpass 1/g" openssh-6.6p1.spec
sed -i -e "s/%define no_x11_askpass 0/%define no_x11_askpass 1/g" openssh-6.6p1.spec
sed -i -e "s/BuildPreReq/BuildRequires/g" openssh-6.6p1.spec
chown 74:74 openssh-6.6p1.spec
rpmbuild -ba openssh-6.6p1.spec
3.如无意外就制作好了
[root@compiler SPECS]# ll ../RPMS/x86_64/openssh-*
-rw-r--r-- 1 root root 417244 Jul 12 12:39 ../RPMS/x86_64/openssh-6.6p1-1.x86_64.rpm
-rw-r--r-- 1 root root 547696 Jul 12 12:39 ../RPMS/x86_64/openssh-clients-6.6p1-1.x86_64.rpm
-rw-r--r-- 1 root root 17020 Jul 12 12:39 ../RPMS/x86_64/openssh-debuginfo-6.6p1-1.x86_64.rpm
-rw-r--r-- 1 root root 374256 Jul 12 12:39 ../RPMS/x86_64/openssh-server-6.6p1-1.x86_64.rpm
开始配置ansible的控制端
1.安装新版本的openssh
rpm -qa |grep openssh |xargs rpm -e --nodeps --justdb #先卸载旧的openssh
rpm -ivh /tmp/openssh-*
2.添加ControlMaster的配置
cat /home/ansible/.ssh/config
Host *
Compression yes
ServerAliveInterval 60
ServerAliveCountMax 5
ControlMaster auto
ControlPath ~/.ssh/sockets/%r@%h-%p
ControlPersist 4h
验证一下
未持久化socket前,需要2秒
[ansible@yw-0-0 test-ops]$ time ansible -i hosts test -m ping
10.33.21.205 | success >> {
"changed": false,
"ping": "pong"
}
real 0m2.046s
user 0m0.984s
sys 0m0.593s
持久化后,800毫秒
10.33.21.205 | success >> {
"changed": false,
"ping": "pong"
}
real 0m0.810s
user 0m0.367s
sys 0m0.246s
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