009-Ambari二次开发之添加自定义组件Redis(二)

上一篇我们主要介绍了Ambari添加组件的答题流程并以REDIS为例说明了流程，本篇在上一篇的基础上，进一步完善说明流程并介绍如何给组件添加metric
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上篇中，我们已经制作出了redis的rpm包，并重新编译了我们修改后的Ambari源代码。我们将打出的RPM包拷贝到我们之前建的HDP的源中，并执行createrepo –update更新源

我们重新安装ambari，安装完后，我们通过界面安装组件时，在选择组件的列表中，看到了redis,我们选择，并安装

配置安装节点

Redis配置信息

安装完后，我们可以在界面看到redis服务

测试并使用redis

Redis添加metrics
metrics获取方式有两种，一种是通过写java插件的方式，另一种是通过写脚本的方式，其实最终的目的是将数据发送到指定端口
我们编写获取metrics的shell脚本
echo $$ >> /var/run/redis/redis_metrics.pid
url=http://$1/ws/v1/timeline/metrics

connected_metrics_name=”redis.connected_clients”

metrics_name=(“redis.connected_clients” “redis.blocked_clients” “redis.used_memory” “redis.mem_fragmentation_ratio”)

metrics_name=(“redis.connected_clients” “redis.blocked_clients” “redis.client_longest_output_list” “redis.client_biggest_input_buf” “redis.used_memory” “redis.used_memory_rss” “redis.used_memory_peak” “redis.used_memory_lua” “redis.total_connections_received” “redis.total_commands_processed” “redis.used_cpu_sys” “redis.used_cpu_user” “redis.used_cpu_sys_children” “redis.used_cpu_user_children”)
appid=”redis”
while [ 1 ]
do
millon_time=$(($(date +%s%N) / 1000000 ))
for name in ${metrics_name[*]} do echo${name}
arr_name=(${name//./ }) value_name=${arr_name[1]}
str_value=$($2 -h $3 -p$4 info |grep ${value_name}”:”) split_value=(${str_value//:/ })
value=${split_value[1]} echo${value}
json=”{
\”metrics\”: [
{
\”metricname\”: \”${name}\”, \”appid\”: \”${appid}\”,
\”hostname\”: \”$3\”, \”timestamp\”:${millon_time},
\”starttime\”: ${millon_time}, \”metrics\”: { \”${millon_time}\": ${value}
}
}
]
}”

    curl -i -X POST -H "Content-Type: application/json" -d "${json}" ${url}
done

sleep $5

添加metrics.json
{
“REDIS_SERVER”: {
“Component”: [
{
“type”: “ganglia”,
“metrics”: {
“default”: {
“metrics/redis/connected_clients”: {
“metric”: “redis.connected_clients”,
“pointInTime”: true,
“temporal”: true
},
“metrics/redis/blocked_clients”: {
“metric”: “redis.blocked_clients”,
“pointInTime”: true,
“temporal”: true
},
“metrics/redis/client_longest_output_list”: {
“metric”: “redis.client_longest_output_list”,
“pointInTime”: true,
“temporal”: true
},
“metrics/redis/client_biggest_input_buf”: {
“metric”: “redis.client_biggest_input_buf”,
“pointInTime”: true,
“temporal”: true
},
“metrics/redis/used_memory”: {
“metric”: “redis.used_memory”,
“pointInTime”: true,
“temporal”: true
},
“metrics/redis/used_memory_rss”: {
“metric”: “redis.used_memory_rss”,
“pointInTime”: true,
“temporal”: true
},
“metrics/redis/used_memory_peak”: {
“metric”: “redis.used_memory_peak”,
“pointInTime”: true,
“temporal”: true
},
“metrics/redis/used_memory_lua”: {
“metric”: “redis.used_memory_lua”,
“pointInTime”: true,
“temporal”: true
},
“metrics/redis/total_connections_received”: {
“metric”: “redis.total_connections_received”,
“pointInTime”: true,
“temporal”: true
},
“metrics/redis/total_commands_processed”: {
“metric”: “redis.total_commands_processed”,
“pointInTime”: true,
“temporal”: true
},
“metrics/redis/used_cpu_sys”: {
“metric”: “redis.used_cpu_sys”,
“pointInTime”: true,
“temporal”: true
},
“metrics/redis/used_cpu_user”: {
“metric”: “redis.used_cpu_user”,
“pointInTime”: true,
“temporal”: true
},
“metrics/redis/used_cpu_sys_children”: {
“metric”: “redis.used_cpu_sys_children”,
“pointInTime”: true,
“temporal”: true
},
“metrics/redis/used_cpu_user_children”: {
“metric”: “redis.used_cpu_user_children”,
“pointInTime”: true,
“temporal”: true
}
}
}
}
]
}
}

widgets文件：

查看metrics