{"id":13840,"date":"2019-04-06T10:46:28","date_gmt":"2019-04-06T10:46:28","guid":{"rendered":"http:\/\/www.appservgrid.com\/paw92\/?p=13840"},"modified":"2019-04-06T10:46:28","modified_gmt":"2019-04-06T10:46:28","slug":"install-glances-influxdb-and-grafana-to-monitor-centos-7","status":"publish","type":"post","link":"https:\/\/www.appservgrid.com\/paw92\/index.php\/2019\/04\/06\/install-glances-influxdb-and-grafana-to-monitor-centos-7\/","title":{"rendered":"Install Glances, InfluxDB and Grafana to Monitor CentOS 7"},"content":{"rendered":"

Glances<\/a>\u00a0is a free open source, modern, cross-platform, real-time\u00a0top<\/a>\u00a0and\u00a0htop-like<\/a>\u00a0monitoring tool with advanced features. It can run in different modes: as a standalone, in client\/server mode and\u00a0in web server mode<\/a>.<\/p>\n

InfluxDB<\/strong>\u00a0is an open source and scalable time series database for metrics, events, and real-time analytics.<\/p>\n

Grafana<\/a>\u00a0is an open source, feature rich, powerful, elegant and highly-extensible, cross-platform tool for monitoring and metric analytics, with beautiful and customizable dashboards. It is a de facto software for data analytics.<\/p>\n

In this article, we will explain how to install and configure\u00a0Glances<\/strong>,\u00a0InfluxDB<\/strong>\u00a0and\u00a0Grafana<\/strong>\u00a0to monitor performance of a\u00a0CentOS 7<\/strong>\u00a0server.<\/p>\n

Step 1: Install Glances in CentOS 7<\/h3>\n

1.<\/strong>\u00a0First start by installing latest stable version of\u00a0glances<\/strong>\u00a0(v2.11.1<\/strong>) using\u00a0PIP<\/a>. If you don\u2019t have\u00a0pip<\/strong>, install it as follows, including\u00a0Python-headers<\/strong>\u00a0required for installing\u00a0psutil<\/strong>.<\/p>\n

# yum install python-pip python-devel\t\r\n<\/pre>\n
2.<\/strong>\u00a0Once you have\u00a0PIP<\/strong>\u00a0and the\u00a0Python-headers<\/strong>, run the following command to install the latest stable version of\u00a0glances<\/strong>\u00a0and verify the version.<\/p>\n
# pip install glances\r\n# glances -V\r\n\r\nGlances v2.11.1 with psutil v5.4.7<\/strong>\r\n<\/pre>\n
Alternatively, if you already have\u00a0glances<\/strong>\u00a0installed, you can upgrade it to the latest version using following command.<\/p>\n
# pip install --upgrade glances\r\n<\/pre>\n
3.<\/strong>\u00a0Now you need to start glances via\u00a0systemd<\/strong>\u00a0so that it runs as a service. Create a new unit by creating a file called\u00a0glances.service<\/strong>\u00a0in\u00a0\/etc\/systemd\/system\/<\/strong>.<\/p>\n
# vim \/etc\/systemd\/system\/glances.service\r\n<\/pre>\n
Copy and paste the following configuration in the file\u00a0glances.service<\/strong>. The\u00a0--config<\/code>\u00a0specifies the config file,\u00a0--export-influxdb<\/code>\u00a0option tells glances to export stats to an InfluxDB server and the\u00a0--disable-ip<\/code>\u00a0option disables the IP module.<\/p>\n
[Unit]\r\nDescription=Glances\r\nAfter=network.target influxd.service\r\n\r\n[Service]\r\nExecStart=\/usr\/bin\/glances --config \/home\/admin\/.config\/glances\/glances.conf --quiet --export-influxdb --disable-ip\r\nRestart=on-failure\r\nRestartSec=30s\r\nTimeoutSec=30s\r\n\r\n[Install]\r\nWantedBy=multi-user.target\r\n<\/pre>\n
Save the file and close it.<\/p>\n
4.<\/strong>\u00a0Then reload systemd manager configuration, start the glances service, view its status, and enable it to auto-start at boot time.<\/p>\n
# systemctl daemon-reload \r\n# systemctl start glances.service\r\n# systemctl status glances.service\r\n# systemctl enable glances.service\r\n<\/pre>\n
5.<\/strong>\u00a0Next, you need to download the glances configuration file provided by the developer using\u00a0wget command<\/a>\u00a0as shown.<\/p>\n
# mkdir ~\/.config\/glances\/\r\n# wget https:\/\/raw.githubusercontent.com\/nicolargo\/glances\/master\/conf\/glances.conf -P ~\/.config\/glances\/ \r\n<\/pre>\n
6.<\/strong>\u00a0In order to export\u00a0Glances<\/strong>\u00a0stats to an\u00a0InfluxDB<\/strong>\u00a0database, you need the\u00a0Python InfluxdDB<\/strong>\u00a0lib, which you can install it using pip command.<\/p>\n
# sudo pip install influxdb\r\n<\/pre>\n
Step 2: Install InfluxDB in CentOS 7<\/h3>\n
7.<\/strong>\u00a0Next, you need to add the InfluxDB Yum repository to install latest vesrion of\u00a0InfluxDB<\/strong>\u00a0package as shown.<\/p>\n
# cat <<EOF | sudo tee \/etc\/yum.repos.d\/influxdb.repo\r\n[influxdb]\r\nname = InfluxDB Repository - RHEL $releasever\r\nbaseurl = https:\/\/repos.influxdata.com\/rhel\/$releasever\/$basearch\/stable\r\nenabled = 1\r\ngpgcheck = 1\r\ngpgkey = https:\/\/repos.influxdata.com\/influxdb.key\r\nEOF\r\n<\/pre>\n
8.<\/strong>\u00a0After adding the repository to the YUM configuration, install the\u00a0InfluxDB<\/strong>\u00a0package by running.<\/p>\n
# yum install influxdb\r\n<\/pre>\n
9.<\/strong>\u00a0Next, start the\u00a0InfluxDB<\/strong>\u00a0service via systemd, confirm that it is running by viewing its status and enable it to auto-start at system boot.<\/p>\n
# systemctl start influxdb\r\n# systemctl status influxdb\r\n# systemctl enable influxdb\r\n<\/pre>\n
10.<\/strong>\u00a0By default, InfluxDB uses TCP port\u00a08086<\/strong>\u00a0for client-server communication over InfluxDB\u2019s HTTP API, you need to open this port in your firewall using the firewall-cmd.<\/p>\n
# firewall-cmd --add-port=8086\/tcp --permanent\r\n# firewall-cmd --reload\r\n<\/pre>\n
11.<\/strong>\u00a0Next, you need to create a database in\u00a0InfluxDB<\/strong>\u00a0for storing data from\u00a0glances<\/strong>. The\u00a0influx<\/strong>\u00a0command which is included in the InfluxDB packages is the simplest way to interact with the database. So execute\u00a0influx<\/strong>\u00a0to start the CLI and automatically connect to the local InfluxDB instance.<\/p>\n
# influx\r\n<\/pre>\n
Run the following commands to create a database called\u00a0glances<\/strong>\u00a0and view available databases.<\/p>\n
Connected to http:\/\/localhost:8086 version 1.6.2\r\nInfluxDB shell version: 1.6.2\r\n> CREATE DATABASE glances<\/strong>\r\n> SHOW DATABASES<\/strong>\r\nname: databases\r\nname\r\n----\r\n_internal\r\nglances\r\n> \r\n<\/pre>\n
To exit the\u00a0InfluxQL<\/strong>\u00a0shell, type\u00a0exit<\/strong>\u00a0and hit\u00a0Enter<\/strong>.<\/p>\n
Step 3: Install Grafana in CentOS 7<\/h3>\n
12.<\/strong>\u00a0Now, install\u00a0Grafana<\/strong>\u00a0from its official YUM repository, start by adding the following configuration to\u00a0\/etc\/yum.repos.d\/grafana.repo<\/strong>\u00a0repository file.<\/p>\n
[grafana]\r\nname=grafana\r\nbaseurl=https:\/\/packagecloud.io\/grafana\/stable\/el\/7\/$basearch\r\nrepo_gpgcheck=1\r\nenabled=1\r\ngpgcheck=1\r\ngpgkey=https:\/\/packagecloud.io\/gpg.key https:\/\/grafanarel.s3.amazonaws.com\/RPM-GPG-KEY-grafana\r\nsslverify=1\r\nsslcacert=\/etc\/pki\/tls\/certs\/ca-bundle.crt\r\n<\/pre>\n
13.<\/strong>\u00a0After adding the repository to the YUM configuration, install the\u00a0Grafana<\/strong>\u00a0package by running.<\/p>\n
# yum install grafana\r\n<\/pre>\n
14.<\/strong>\u00a0Once you have installed\u00a0Grafana<\/strong>, reload systemd manager configuration, start the grafana server, check if the service is up and running by viewing its status and enable it to auto-start at boot time.<\/p>\n
# systemctl daemon-reload \r\n# systemctl start grafana-server \r\n# systemctl status grafana-server \r\n# systemctl enable grafana-server\r\n<\/pre>\n
15.<\/strong>\u00a0Next, open port\u00a03000<\/strong>\u00a0which\u00a0Grafana<\/strong>\u00a0server listens on, in your firewall using the firewall-cmd.<\/p>\n
# firewall-cmd --add-port=3000\/tcp --permanent\r\n# firewall-cmd --reload\r\n<\/pre>\n
Step 4: Monitor CentOS 7 Server Metrics Via Grafana<\/h3>\n
16.<\/strong>\u00a0At this point, you can use the following URL to access\u00a0Grafana<\/strong>\u00a0web interface, which will redirect to the login page, use the default credentials to login.<\/p>\n
URL: http:\/\/SERVER_IP:3000<\/strong>\r\nUsername: admin<\/strong> \r\nPassword: admin<\/strong>\r\n<\/pre>\n
You will be asked to create a new password, once you have done that, you will be redirected to the home dashboard, as shown in the screenshot below.<\/p>\n
\n
\"Grafana<\/a><\/p>\n
Grafana Admin Login<\/p>\n<\/div>\n
\n
\"Grafana<\/a><\/p>\n
Grafana Set Admin Password<\/p>\n<\/div>\n
\n
\"Grafana<\/a><\/p>\n
Grafana Dashboard<\/p>\n<\/div>\n
17.<\/strong>\u00a0Next, click on\u00a0Create your first data source<\/strong>, which should be an InfluxDB database. Under\u00a0Settings<\/strong>, enter a suitable name e.g\u00a0Glances Import<\/strong>, then use the following values for the other two important variables (HTTP URL<\/strong>\u00a0and\u00a0InfluxDB Database<\/strong>) as shown in the screenshot.<\/p>\n
HTTP URL: http:\/\/localhost:8086<\/strong>\r\nInfluxDB Details - Database: glances<\/strong>\r\n<\/pre>\n
Then click on\u00a0Save & Test<\/strong>\u00a0to connect to the data source. You should receive a feedback indicating \u201cData source is working<\/strong>\u201d.<\/p>\n
\n
\"Create<\/a><\/p>\n
Create Data Source<\/p>\n<\/div>\n
18.<\/strong>\u00a0Now you need to import the\u00a0Glances<\/strong>\u00a0dashboard. Click on the plus\u00a0(+)<\/code>\u00a0and go to\u00a0Import<\/strong>\u00a0as shown in the screenshot.<\/p>\n
\n
\"Import<\/a><\/p>\n
Import Glances<\/p>\n<\/div>\n
17. You will need either the\u00a0Glances Dashboard URL<\/strong>\u00a0or ID or upload its\u00a0.JSON<\/code>\u00a0file which you can find from\u00a0Grafana.com<\/strong>. In this case, we will use the\u00a0Glances Dashboard<\/strong>\u00a0created by the developer of Glances, its URL is\u00a0https:\/\/grafana.com\/dashboards\/2387<\/strong>\u00a0or ID is\u00a02387<\/strong>.<\/p>\n
\n
\"Import<\/a><\/p>\n
Import Glances Dashboard<\/p>\n<\/div>\n
18.<\/strong>\u00a0Once the Grafana dashboard has been loaded, under options, find glances and choose an InluxDB data source (Glances Import<\/strong>) which you created earlier on, then click on\u00a0Import<\/strong>\u00a0as shown in the following screenshot.<\/p>\n
\n
\"Import<\/a><\/p>\n
Import Glances Settings<\/p>\n<\/div>\n
19.<\/strong>\u00a0After successfully importing the\u00a0Glances<\/strong>\u00a0dashboard, you should be able to watch graphs showing metrics from your server as provided by glances via influxdb.<\/p>\n
\n
\"Monitor<\/a><\/p>\n
Monitor CentOS Using Grafana<\/p>\n<\/div>\n
That\u2019s all for now! In this article, we have explained how to monitor CentOS 7 server with Glances, InfluxDB and Grafana. If you have any queries, or information to share, use the comment form below to do so.<\/p>\n
Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Glances\u00a0is a free open source, modern, cross-platform, real-time\u00a0top\u00a0and\u00a0htop-like\u00a0monitoring tool with advanced features. It can run in different modes: as a standalone, in client\/server mode and\u00a0in web server mode. InfluxDB\u00a0is an open source and scalable time series database for metrics, events, and real-time analytics. Grafana\u00a0is an open source, feature rich, powerful, elegant and highly-extensible, cross-platform tool … <\/p>\n
Continue reading “Install Glances, InfluxDB and Grafana to Monitor CentOS 7”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-13840","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/posts\/13840","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/comments?post=13840"}],"version-history":[{"count":1,"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/posts\/13840\/revisions"}],"predecessor-version":[{"id":13841,"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/posts\/13840\/revisions\/13841"}],"wp:attachment":[{"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/media?parent=13840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/categories?post=13840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/tags?post=13840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}