saltstack的探索-安装vim、nginx服务和配置、自定义脚本
1. 配置minion首先，移除原来的测试minion
# salt-key -d test230
The following keys are going to be deleted:
Accepted Keys:
test230
Proceed? y
Key for minion test230 deleted.
新增minion：
【svr205-2】
# yum install salt-minion -y
# vim /etc/salt/minion
master: 10.0.200.21
id: svr205-2
或则，使用脚本来更改配置：
#cp -a /etc/salt/minion /etc/salt/minion.bak && s_ip=10.0.200.21 && s_host=$(hostname) && sed -i -e "s/#master: salt/master: ${s_ip}/"-e "s/#id:/id: ${s_host}/" /etc/salt/minion && cat /etc/salt/minion |grep ^[^#]
master: 10.0.200.21
id: svr205-2
# service salt-minion start
Starting salt-minion daemon:
【svr205-2, 3, 4, 5类似】同上
2. 配置master和minion的key
# salt-key -L
Accepted Keys:
Unaccepted Keys:
svr205-2
svr205-3
svr205-4
svr205-5
Rejected Keys:
# salt-key -a svr205*
The following keys are going to be accepted:
Unaccepted Keys:
svr205-2
svr205-3
svr205-4
svr205-5
Proceed? y
Key for minion svr205-2 accepted.
Key for minion svr205-3 accepted.
Key for minion svr205-4 accepted.
Key for minion svr205-5 accepted.
# salt-key -L
Accepted Keys:
svr205-2
svr205-3
svr205-4
svr205-5
Unaccepted Keys:
Rejected Keys:
测试：
# salt 'svr205-*' test.ping
svr205-3:
True
svr205-2:
True
svr205-5:
True
svr205-4:
True
3. 配置管理-同步vim配置
# pwd
/srv/salt
# cat edit/vim.sls
vim-enhanced:
pkg.installed: []
/root/.vimrc:
file.managed:
- source: salt://edit/conf/vimrc
- mode: 644
- uesr: root
- group: root
# ls edit/conf/
vimrc
# salt 'svr205-*' state.sls edit.vim
##########################################################################
略
##########################################################################
4. 远程执行-在4台主机上执行脚本lvs-realsvr，并加入开机启动。
启动脚本：
# cat lvs/real/start.sls
/etc/rc.d/init.d/lvs-realsvr:
file.managed:
- source: salt://lvs/bin/lvs-realsvr.sh
- mode: 755
lvs-realsvr:
cmd.run:
- require:
- file: /etc/rc.d/init.d/lvs-realsvr
- name: service lvs-realsvr start && chkconfig lvs-realsvr on
关闭脚本：
# cat lvs/real/stop.sls
/etc/rc.d/init.d/lvs-realsvr:
file.managed:
- source: salt://lvs/bin/lvs-realsvr.sh
- mode: 755
lvs-realsvr:
cmd.run:
- require:
- file: /etc/rc.d/init.d/lvs-realsvr
- name: service lvs-realsvr stop && chkconfig lvs-realsvr off
控制脚本：
# cat lvs/bin/lvs-realsvr.sh
#!/bin/bash
#
# 2015/2/28
# lvs real server
#
# chkconfig: - 85 15
# description:control vip on lvs realserver
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0
lockfile="/var/lock/subsys/lvs-real"
s_vip='10.0.205.100'
start() {
ifconfig lo:1 ${s_vip} netmask 255.255.255.255 broadcast ${s_vip}
route add -host ${s_vip} dev lo:1
echo 1 >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo 2 >/proc/sys/net/ipv4/conf/lo/arp_announce
echo 1 >/proc/sys/net/ipv4/conf/all/arp_ignore
echo 2 >/proc/sys/net/ipv4/conf/all/arp_announce
retval=$?
echo
[ $retval -eq 0 ] && touch $lockfile
return $retval
}
stop() {
echo 0 >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo 0 >/proc/sys/net/ipv4/conf/lo/arp_announce
echo 0 >/proc/sys/net/ipv4/conf/all/arp_ignore
echo 0 >/proc/sys/net/ipv4/conf/all/arp_announce
ifconfig lo:1 down
route del -host ${s_vip}
retval=$?
echo
[ $retval -eq 0 ] && rm -f $lockfile
return $retval
}
status() {
ip a |grep inet |grep -v inet6
}
case $1 in
start)
start
status
;;
stop)
stop
status
;;
status)
status
;;
*)
echo $"Usage: $0 {start|stop|status}"
exit 2
esac
执行：
# salt 'svr205-*' state.sls lvs.real.start
##########################################################################
略
##########################################################################
查看minion的状态：
【svr205-2】
# ll /etc/init.d/lvs-realsvr
-rwxr-xr-x 1 root root 1252 Feb 28 05:31 /etc/init.d/lvs-realsvr
# ip a |grep inet |grep -v inet6
inet 127.0.0.1/8 scope host lo
inet 10.0.205.100/32 brd 10.0.205.100 scope global lo:1
inet 10.0.205.2/8 brd 10.255.255.255 scope global eth0
# salt 'svr205-*' state.sls lvs.real.stop
##########################################################################
略
##########################################################################
查看minion的状态：
【svr205-2】
# ip a |grep inet |grep -v inet6
inet 127.0.0.1/8 scope host lo
inet 10.0.205.2/8 brd 10.255.255.255 scope global eth0
5. 配置管理-安装nginx服务，并加入开机启动。
# cat nginx/init.sls
nginx:
pkg.installed: []
service.running:
- require:
- pkg: nginx
cmd.run:
- require:
- pkg: nginx
- name: chkconfig nginx on
# salt 'svr205-*' state.sls nginx
##########################################################################
略
##########################################################################
深入一步，使用模版部署自定义的index.html，更新nginx首页，显示当前web主机的hostname和ip信息。
# cat nginx/init.sls
nginx:
pkg.installed: []
service.running:
- watch:
- file: /usr/share/nginx/html/index.html
- require:
- pkg: nginx
cmd.run:
- require:
- pkg: nginx
- name: chkconfig nginx on
/usr/share/nginx/html/index.html:
file.managed:
- source: salt://nginx/conf/index.html
- template: jinja
# cat nginx/conf/index.html
<p>
HOST: {{ grains['host'] }} <br />
<br /><br />
{% for k,v in grains.get('ip4_interfaces').items() %}
{{ k }}: {{ v.pop() }} <br />
{% endfor %}
</p>
# salt 'svr205-*' state.sls nginx
##########################################################################
略
##########################################################################
查看文件是否有改变：
【svr205-2】
# cat /usr/share/nginx/html/index.html
<p>
HOST: svr205-2 <br />
<br /><br />
lo: 10.0.205.100 <br />
eth0: 10.0.205.2 <br />
</p>
如上，得到了该主机的hostname和ip信息，符合预期。
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