【1】利用 redis_exporter 监控 redis 集群
(1.0)redis_exporter
以前都是用傻办法,一个实例一个采集器;
redis_exporter 支持的参数很多,对我们有用的就几个。 ./redis_exporter --help Usage of ./redis_exporter: -redis.addr string Address of the Redis instance to scrape (default "redis://localhost:6379") -redis.password string Password of the Redis instance to scrape -web.listen-address string Address to listen on for web interface and telemetry. (default ":9121")
本来想采取最low 的方法,一个实例启一个 redis_exporter
。这样子的话,集群那里很多语句都用不了,比如 cluster_slot_fail
。放弃该方法
nohup ./redis_exporter -redis.addr 172.18.11.139:7000 -redis.password xxxxxx -web.listen-address 172.18.11.139:9121 > /dev/null 2>&1 &
nohup ./redis_exporter -redis.addr 172.18.11.139:7001 -redis.password xxxxxx -web.listen-address 172.18.11.139:9122 > /dev/null 2>&1 &
nohup ./redis_exporter -redis.addr 172.18.11.140:7002 -redis.password xxxxxx -web.listen-address 172.18.11.139:9123 > /dev/null 2>&1 &
nohup ./redis_exporter -redis.addr 172.18.11.140:7003 -redis.password xxxxxx -web.listen-address 172.18.11.139:9124 > /dev/null 2>&1 &
nohup ./redis_exporter -redis.addr 172.18.11.141:7004 -redis.password xxxxxx -web.listen-address 172.18.11.139:9125 > /dev/null 2>&1 &
nohup ./redis_exporter -redis.addr 172.18.11.141:7005 -redis.password xxxxxx -web.listen-address 172.18.11.139:9126 > /dev/null 2>&1 &
(1.1)redis集群情况
#redis集群IP和端口,集群配置了密码
136.xxx.102.112:7000 136.xxx.102.112:7001 136.xxx.102.112:7002 136.xxx.102.113:7000 136.xxx.102.113:7001 136.xxx.102.113:7002
(1.2)redis_exporter部署,配置prometheus
#将文件解压并修改文件夹名称,插件不一定安装redis端
tar -zxvf redis_exporter-v1.3.5.linux-amd64.tar.gz mv redis_exporter-v1.3.5.linux-amd64 redis_exporter
修改prometheus配置,注意文件格式,如果文件有问题会导致prometheus无法启动
vi prometheus.yml
#将文件解压并修改文件夹名称,插件不一定安装redis端 tar -zxvf redis_exporter-v1.3.5.linux-amd64.tar.gz mv redis_exporter-v1.3.5.linux-amd64 redis_exporter #修改prometheus配置,注意文件格式,如果文件有问题会导致prometheus无法启动 vi prometheus.yml - job_name: 'redis_exporter_targets' static_configs: - targets: - redis://136.127.102.112:7000 - redis://136.127.102.112:7001 - redis://136.127.102.112:7002 - redis://136.127.102.113:7000 - redis://136.127.102.113:7001 - redis://136.127.102.113:7002 params: check-keys: ["metrics:*"] metrics_path: /scrape relabel_configs: - source_labels: [__address__] target_label: __param_target - source_labels: [__param_target] target_label: instance - target_label: __address__ replacement: 136.127.102.112:9122 - job_name: 'redis_exporter' static_configs: - targets: - 136.127.102.112:9122
相关参考:
其实官方文档已经写了。 scrape_configs: ## config for the multiple Redis targets that the exporter will scrape - job_name: 'redis_exporter_targets' static_configs: - targets: - redis://first-redis-host:6379 - redis://second-redis-host:6379 - redis://second-redis-host:6380 - redis://second-redis-host:6381 metrics_path: /scrape relabel_configs: - source_labels: [__address__] target_label: __param_target - source_labels: [__param_target] target_label: instance - target_label: __address__ replacement: <<REDIS-EXPORTER-HOSTNAME>>:9121 ## config for scraping the exporter itself - job_name: 'redis_exporter' static_configs: - targets: - <<REDIS-EXPORTER-HOSTNAME>>:9121
(1.3)采集器(探针)启动
#启动探针,因为是集群只需要写清楚密码即可,默认监听端口为9121,由于有密码需要将端口设置为9122 nohup ./redis_exporter -redis.password passwd123 -web.listen-address 0.0.0.0:9122 &
#prometheus需要重启 或者 reload 重载
(1.4)效果
【参考文档】
转自:https://blog.csdn.net/weixin_43135696/article/details/122258105