概述
生产中为了避免单点故障,生产环境中redis升级为扩展模式,需要对redis进行监控,一旦有中断出现故障便触发报警。Redis有自带的redis-cli客户端,通过群集信息命令能查询到生成的运行情况,我们可以写一个shell脚本,通过zabbix来调用这个脚本实现监控。
一、集群信息命令的使用
命令格式:
redis-cli -h [主机名] -p [端口] -a [密码]集群信息
1,查询可执行运行状态,1为正常,0为故障
redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info | grep "cluster_state"
2,redis赋予已分配的槽
redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info | grep -w "cluster_slots_assigned" | awk -F':' '{print $2}'
3,redis分配槽的状态是ok的数量
redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info | grep -w "cluster_slots_ok" | awk -F':' '{print $2}'
4,redis可行可能失效的槽数
redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info | grep -w "cluster_slots_pfail" | awk -F':' '{print $2}'
5,redis能够已经失效的槽数
redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info | grep -w "cluster_slots_fail" | awk -F':' '{print $2}'
6,redis赋予中所有子系统个数
redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info | grep -w "cluster_known_nodes" | awk -F':' '{print $2}'
7,redis赋予中主报价个数
redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info | grep -w "cluster_size" | awk -F':' '{print $2}'
8,redis部署中的currentEpoch值
(累积中的currentEpoch总是一致的,currentEpoch变为,代表路由器的配置或操作越新,积累中最大的那个node epoch
当发生的状态发生改变时,某些代表为了执行一些动作需要寻求其他例程的同意时,就会增加currentEpoch的值)
redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info | grep -w "cluster_current_epoch" | awk -F':' '{print $2}'
9,redis容量中二进制总线接收的消息数量
redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info | grep -w "cluster_stats_messages_sent" | awk -F':' '{print $2}'
10,redis容量中二进制总线发送的消息数量
redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info | grep -w "cluster_stats_messages_received" | awk -F':' '{print $2}'
11,redis端口存活监控
redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 ping | grep -c PONG
二,创建监控脚本
(1),监控redis运输幸存的脚本
[root @ admin conf]#vim redis-port.sh
#!/bin/bash
#根据实际情况修改
REDISCLI="/usr/local/bin/redis-cli"
HOST="192.168.2.14"
port1=7001
port2=7002
port3=7003
port4=7004
port5=7005
port6=7006
if [[ $# == 1 ]];then
case $1 in
7001)
result=`$REDISCLI -h $HOST -p $port1 ping 2>/dev/null | grep -c PONG`
echo $result
;;
7002)
result=`$REDISCLI -h $HOST -p $port2 ping 2>/dev/null | grep -c PONG`
echo $result
;;
7003)
result=`$REDISCLI -h $HOST -p $port3 ping 2>/dev/null | grep -c PONG`
echo $result
;;
7004)
result=`$REDISCLI -h $HOST -p $port4 ping 2>/dev/null | grep -c PONG`
echo $result
;;
7005)
result=`$REDISCLI -h $HOST -p $port5 ping 2>/dev/null | grep -c PONG`
echo $result
;;
7006)
result=`$REDISCLI -h $HOST -p $port6 ping 2>/dev/null | grep -c PONG`
echo $result
;;
*)
echo -e "\033[33mUsage: $0 {7001|7002|7003}\033[0m"
;;
esac
fi
(2),监控redis-cluster部署的脚本
[root @ admin conf]#vim redis-cluster.sh
#!/bin/bash
#根据实际情况修改
REDISCLI="/usr/local/bin/redis-cli"
HOST="192.168.2.14"
PORT=`ps -ef | grep -w redis-server | grep -v "grep" | awk '{print $9}' | awk -F ':' '{print $2}' | head -1`
if [[ $# == 1 ]];then
case $1 in
cluster_state)
result=`$REDISCLI -h $HOST -p $PORT cluster info 2>/dev/null | grep -w "cluster_state" | awk -F':' '{print $2}' | grep -c "ok"`
echo $result
;;
cluster_slots_assigned)
result=`$REDISCLI -h $HOST -p $PORT cluster info 2>/dev/null | grep -w "cluster_slots_assigned" | awk -F':' '{print $2}'`
echo $result
;;
cluster_slots_ok)
result=`$REDISCLI -h $HOST -p $PORT cluster info 2>/dev/null | grep -w "cluster_slots_ok" | awk -F':' '{print $2}'`
echo $result
;;
cluster_slots_pfail)
result=`$REDISCLI -h $HOST -p $PORT cluster info 2>/dev/null | grep -w "cluster_slots_pfail" | awk -F':' '{print $2}'`
echo $result
;;
cluster_slots_fail)
result=`$REDISCLI -h $HOST -p $PORT cluster info 2>/dev/null | grep -w "cluster_slots_fail" | awk -F':' '{print $2}'`
echo $result
;;
cluster_known_nodes)
result=`$REDISCLI -h $HOST -p $PORT cluster info 2>/dev/null | grep -w "cluster_known_nodes" | awk -F':' '{print $2}'`
echo $result
;;
cluster_size)
result=`$REDISCLI -h $HOST -p $PORT cluster info 2>/dev/null | grep -w "cluster_size" | awk -F':' '{print $2}'`
echo $result
;;
cluster_current_epoch)
result=`$REDISCLI -h $HOST -p $PORT cluster info 2>/dev/null | grep -w "cluster_current_epoch" | awk -F':' '{print $2}'`
echo $result
;;
cluster_stats_messages_sent)
result=`$REDISCLI -h $HOST -p $PORT cluster info 2>/dev/null | grep -w "cluster_stats_messages_sent" | awk -F':' '{print $2}'`
echo $result
;;
cluster_stats_messages_received)
result=`$REDISCLI -h $HOST -p $PORT cluster info 2>/dev/null | grep -w "cluster_stats_messages_received" | awk -F':' '{print $2}'`
echo $result
;;
*)
echo -e "\033[33mUsage: $0 {cluster_state|cluster_slots_assigned|cluster_slots_ok|cluster_slots_pfail|cluster_slots_fail|cluster_known_nodes|cluster size|cluster current epoch|cluster_stats_messages_sent|cluster_stats_messages_received}\033[0m"
;;
esac
fi
(3)授予脚本调试权限
[root@admin conf]# chmod +x redis-cluster.sh
[root@admin conf]# chmod +x redis-port.sh
(4)脚本测试
查看redis赋予状态:
[root@admin conf]# ./redis-cluster.sh cluster_state
1
查看redis 7001端口状态:
[root@admin conf]# ./redis-port.sh 7001
1
三,创建redis分布式监控配置文件
1,编写监控配置文件
[root @ admin conf]#vi zabbix_agentd.conf
#添加两行自定义KEY
#redis-cluster实施监控
UserParameter = Redis.Cluster [*],/ home / zabbix / conf / redis-cluster.sh $ 1
#redis-port端口监控
UserParameter = Redis.Port [*],/ home / zabbix / conf / redis-port.sh $ 1
2,重启zabbix-agent
[root @ admin〜]#/etc/init.d/zabbix-agent重新启动
3,登录zabbix服务器服务端机器上测试
[root@zabbix ~]# zabbix_get -s 192.168.2.14 -p 10050 -k "Redis.Cluster[cluster_state]"
1
[root@zabbix ~]# zabbix_get -s 192.168.2.14 -p 10050 -k "Redis.Port[7001]"
1
四,zabbix上创建redis监控模板
1,创建redis-cluster模板名称
2,创建监控项
例如:(根据自身情况决定)
名称:redis能够运行状态监测
类型:zabbix客户端
键值:Redis.Cluster [cluster_state]
信息类型:数字(无正负)
更新间隔:30s
创建redis端口监控
3,创造主轴
例如:(根据自身情况决定)
名称:redis发挥状态失败
严重性:一般严重
表达式:{Redis-cluster Service:Redis.Cluster [cluster_state] .count(#3,1,“ ne”)}> 2
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