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Zabbix3.4通过shell脚本监控redis集群

发表于：2024-10-24 作者：千家信息网编辑

千家信息网最后更新 2024年10月24日，为了避免单点故障，生产环境中redis升级为集群模式，需要对redis集群进行监控，一旦有节点出现故障便触发报警。Redis有自带的redis-cli客户端，通过cluster info命令能查询到集

千家信息网最后更新 2024年10月24日Zabbix3.4通过shell脚本监控redis集群

为了避免单点故障，生产环境中redis升级为集群模式，需要对redis集群进行监控，一旦有节点出现故障便触发报警。Redis有自带的redis-cli客户端，通过cluster info命令能查询到集群的运行情况，我们可以写个shell脚本，通过zabbix来调用这个脚本实现集群的监控。

一、cluster info命令的使用

命令格式：

redis-cli -h [hostname] -p [port] -a [password] cluster info

1、查询集群运行情况（其中一个master节点即可）

/data/redis/bin/redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info

2、查询集群运行状态，1为正常，0为故障

/data/redis/bin/redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info | grep "cluster_state"

/data/redis/bin/redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info | grep -w "cluster_state" | awk -F':' '{print $2}'|grep -c "ok"

3、查询集群已知节点数量

/data/redis/bin/redis-cli -h xxx.xxx.xxx.xxx -a 'password' -p 7001 cluster info | grep -w "cluster_known_nodes" | awk -F':' '{print $2}'

二、创建监控脚本

vim /etc/zabbix/zabbix_agentd.d/redis_cluster.sh

#!/bin/bashREDISCLI="/data/redis/bin/redis-cli"HOST="xxx.xxx.xxx.xxx"PORT=7001PASS="password"if [[ $# == 1 ]];then    case $1 in        cluster_state)            result=`$REDISCLI -h $HOST -a $PASS -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 -a $PASS -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 -a $PASS -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 -a $PASS -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 -a $PASS -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 -a $PASS -p $PORT cluster info 2>/dev/null | grep -w "cluster_known_nodes" | awk -F':' '{print $2}'`            echo $result        ;;        cluster_size)            result=`$REDISCLI -h $HOST -a $PASS -p $PORT cluster info 2>/dev/null | grep -w "cluster_size" | awk -F':' '{print $2}'`            echo $result        ;;        cluster_current_epoch)            result=`$REDISCLI -h $HOST -a $PASS -p $PORT cluster info 2>/dev/null | grep -w "cluster_current_epoch" | awk -F':' '{print $2}'`            echo $result        ;;        cluster_my_epoch)            result=`$REDISCLI -h $HOST -a $PASS -p $PORT cluster info 2>/dev/null | grep -w "cluster_my_epoch" | awk -F':' '{print $2}'`            echo $result        ;;        cluster_stats_messages_ping_sent)            result=`$REDISCLI -h $HOST -a $PASS -p $PORT cluster info 2>/dev/null | grep -w "cluster_stats_messages_ping_sent" | awk -F':' '{print $2}'`            echo $result        ;;        cluster_stats_messages_pong_sent)            result=`$REDISCLI -h $HOST -a $PASS -p $PORT cluster info 2>/dev/null | grep -w "cluster_stats_messages_pong_sent" | awk -F':' '{print $2}'`            echo $result        ;;        cluster_stats_messages_sent)            result=`$REDISCLI -h $HOST -a $PASS -p $PORT cluster info 2>/dev/null | grep -w "cluster_stats_messages_sent" | awk -F':' '{print $2}'`            echo $result        ;;        cluster_stats_messages_ping_received)            result=`$REDISCLI -h $HOST -a $PASS -p $PORT cluster info 2>/dev/null | grep -w "cluster_stats_messages_ping_received" | awk -F':' '{print $2}'`            echo $result        ;;        cluster_stats_messages_pong_received)            result=`$REDISCLI -h $HOST -a $PASS -p $PORT cluster info 2>/dev/null | grep -w "cluster_stats_messages_pong_received" | awk -F':' '{print $2}'`            echo $result        ;;        cluster_stats_messages_meet_received)            result=`$REDISCLI -h $HOST -a $PASS -p $PORT cluster info 2>/dev/null | grep -w "cluster_stats_messages_meet_received" | awk -F':' '{print $2}'`            echo $result        ;;        cluster_stats_messages_received)            result=`$REDISCLI -h $HOST -a $PASS -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 my epoch|cluster_stats_messages_ping_sent|cluster_stats_messages_pong_sent|cluster_stats_messages_sent|cluster_stats_messages_ping_received|cluster_stats_messages_pong_received|cluster_stats_messages_meet_received|cluster_stats_messages_received}\033[0m"        ;;    esacfi

2、赋予脚本可执行权限

chmod +x /etc/zabbix/zabbix_agentd.d/redis_cluster.sh

3、脚本测试
查看redis集群节点数量

/etc/zabbix/zabbix_agentd.d/redis_cluster.sh cluster_known_nodes

三、创建redis集群监控配置文件

1、编写redis监控配置文件

vim /etc/zabbix/zabbix_agentd.d/redis.conf

UserParameter=Redis.Cluster[*],/etc/zabbix/zabbix_agentd.d/redis_cluster.sh $1

2、重启zabbix-agent

systemctl restart zabbix-agent

3、在zabbix server端测试

zabbix_get -s xxx.xxx.xxx.xxx -p 10050 -k "Redis.Cluster[cluster_slots_ok]"

四、创建并导入监控模板

1、创建监控模板文件
注：此模板报警阀值设置为cluster current epoch < 6、cluster known nodes < 6和clusterstate不是ok
redis_cluster_templates.xml文件内容如下

    3.4    2019-12-06T05:43:56Z                        Templates                                                    {Template Redis Cluster:Redis.Cluster[cluster_current_epoch].last()}<6            0                        cluster current epoch < 6            0                                    0            3                        0            1                                                    {Template Redis Cluster:Redis.Cluster[cluster_known_nodes].last()}<6            0                        cluster known nodes < 6            0                                    0            3                        0            1                                                    {Template Redis Cluster:Redis.Cluster[cluster_state].last()}=0            0                        Redis Cluster is down            0                                    0            4                        0            1                                                            Redis cluster node            900            200            0.0000            100.0000            1            1            0            1            0            0.0000            0.0000            0            0            0            0                                                0                    0                    1A7C11                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_current_epoch]                                                                        1                    0                    F63100                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_known_nodes]                                                                        2                    0                    2774A4                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_my_epoch]                                                                        3                    0                    A54F10                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_size]                                                                            Redis cluster slots            900            200            0.0000            100.0000            1            1            0            1            0            0.0000            0.0000            0            0            0            0                                                0                    0                    1A7C11                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_slots_assigned]                                                                        1                    0                    F63100                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_slots_fail]                                                                        2                    0                    2774A4                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_slots_ok]                                                                        3                    0                    A54F10                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_slots_pfail]                                                                            Redis cluster stats messages            900            200            0.0000            100.0000            1            1            0            1            0            0.0000            0.0000            0            0            0            0                                                0                    0                    1A7C11                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_stats_messages_meet_received]                                                                        1                    0                    F63100                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_stats_messages_ping_received]                                                                        2                    0                    2774A4                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_stats_messages_ping_sent]                                                                        3                    0                    A54F10                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_stats_messages_pong_received]                                                                        4                    0                    FC6EA3                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_stats_messages_pong_sent]                                                                        5                    0                    6C59DC                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_stats_messages_received]                                                                        6                    0                    AC8C14                    0                    7                    0                                            Template Redis Cluster                        Redis.Cluster[cluster_stats_messages_sent]