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move info to Wiki (#23)
This commit is contained in:
Ramil Valitov
GitHub
parent
0618d6d2d3
commit
b4e4e172f3
461
README.md
461
README.md
@ -2,7 +2,7 @@
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## Main features
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@ -57,7 +57,7 @@ Data is captured every minute. These timings can be adjusted in template or per
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## Provided Graphs
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#### Connections
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Displays the following data:
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@ -67,7 +67,7 @@ Displays the following data:
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- Queue utilization in %
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#### CPU
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Displays the following data:
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@ -75,7 +75,7 @@ Displays the following data:
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- Accepted connections per second
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#### Memory
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Displays the following data:
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@ -85,7 +85,7 @@ Displays the following data:
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- Queue utilization in %
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#### Process
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Displays the following data:
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@ -114,456 +114,13 @@ Screens are based on the graphs above:
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- Queue
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- Max children riched
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## Installation
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### 1. On Zabbix agents
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Perform the following operations on all servers with Zabbix and PHP-FPM from which you want to capture the data.
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#### 1.1. Install Prerequisites
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Install required packages.
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##### For `apt-get` based environments (Debian, Ubuntu, etc.):
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```bash
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apt-get update
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apt-get -y install grep gawk lsof jq libfcgi0ldbl
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```
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Additionally, for Debian Jessie 8.x and earlier (or for equivalent Ubuntu version):
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```bash
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apt-get -y install libfcgi0ldbl
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```
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Additionally, for Debian Stretch 9.x and later (or for equivalent Ubuntu version):
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```bash
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apt-get -y install libfcgi-bin
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```
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##### For `yum` based environments (CentOS):
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```bash
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yum check-update
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yum install grep gawk lsof jq fcgi
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```
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#### 1.2. Install Zabbix PHP-FPM template
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First, please, download the template archive: you can use either the [latest published release](https://github.com/rvalitov/zabbix-php-fpm/releases/latest) (the latest stable version, I hope :sweat_smile:) or use the active development version (that contains all the latest features and updates).
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Below we will download the archive to a temporary directory `/tmp` that usually presents in all OS.
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If you don't have such directory, please, create it first.
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##### 1.2.1. To use stable release
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To download a stable release, run command:
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```console
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curl -L $(curl -s https://api.github.com/repos/rvalitov/zabbix-php-fpm/releases/latest | grep 'zipball_' | cut -d\" -f4) --output /tmp/zabbix-php-fpm.zip
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```
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##### 1.2.2. To use development version
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To download a developement version, run command:
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```console
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wget https://github.com/rvalitov/zabbix-php-fpm/archive/master.zip -O /tmp/zabbix-php-fpm.zip
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```
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##### 1.2.3. Unzip and configure
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Unzip the downloaded archive:
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```console
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unzip -j /tmp/zabbix-php-fpm.zip "*/zabbix/*" "*/ispconfig/*" -d /tmp/zabbix-php-fpm
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```
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Copy the required files to the Zabbix agent configuration directory:
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```console
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cp /tmp/zabbix-php-fpm/userparameter_php_fpm.conf /etc/zabbix/zabbix_agentd.d/
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cp /tmp/zabbix-php-fpm/zabbix_php_fpm_discovery.sh /etc/zabbix/
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cp /tmp/zabbix-php-fpm/zabbix_php_fpm_status.sh /etc/zabbix/
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```
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Configure access rights:
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```console
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chmod +x /etc/zabbix/zabbix_php_fpm_discovery.sh
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chmod +x /etc/zabbix/zabbix_php_fpm_status.sh
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```
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#### 1.3. Root privileges
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Automatic detection of pools requires root privileges. You can achieve it using one of the methods below.
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##### 1.3.1. Method #1. Root privileges for Zabbix Agent
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This method sets root privileges for Zabbix Agent, i.e. the Zabbix Agent will run under `root` user, as a result all user scripts will also have the root access rights.
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Edit Zabbix agent configuration file `/etc/zabbix/zabbix_agentd.conf`, find `AllowRoot` option and enable it:
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```
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### Option: AllowRoot
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# Allow the agent to run as 'root'. If disabled and the agent is started by 'root', the agent
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# will try to switch to the user specified by the User configuration option instead.
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# Has no effect if started under a regular user.
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# 0 - do not allow
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# 1 - allow
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#
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# Mandatory: no
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# Default:
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# AllowRoot=0
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AllowRoot=1
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```
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In the same file find option `User` and set it to `root`:
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```
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### Option: User
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# Drop privileges to a specific, existing user on the system.
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# Only has effect if run as 'root' and AllowRoot is disabled.
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#
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# Mandatory: no
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# Default:
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# User=zabbix
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User=root
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```
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Restart the Zabbix agent service, for example:
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```console
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systemctl restart zabbix-agent
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```
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Check that the Zabbix agent runs under `root` user:
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```console
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user@server:~$ ps aux | grep "zabbix_agent"
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user 3761 0.0 0.0 8132 928 pts/0 S+ 18:32 0:00 grep zabbix_agent
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root 6026 0.0 0.0 86968 3472 ? S Dec14 0:00 /usr/sbin/zabbix_agentd -c /etc/zabbix/zabbix_agentd.conf
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root 6027 0.7 0.0 87056 5044 ? S Dec14 76:00 /usr/sbin/zabbix_agentd: collector [idle 1 sec]
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root 6028 0.0 0.0 161160 11092 ? S Dec14 7:41 /usr/sbin/zabbix_agentd: listener #1 [waiting for connection]
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root 6029 0.0 0.0 161244 11180 ? S Dec14 7:43 /usr/sbin/zabbix_agentd: listener #2 [waiting for connection]
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root 6030 0.0 0.0 161136 11072 ? S Dec14 7:43 /usr/sbin/zabbix_agentd: listener #3 [waiting for connection]
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```
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You should see `root` above. Otherwise, the Zabbix agent works without `root` privileges and will not be able to discover the PHP pools.
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Since some updates of Zabbix agent and in some OS the above changes are not enough and the following actions must be performed (as desribed in Zabbix manual for versions [4.0](https://www.zabbix.com/documentation/4.0/manual/appendix/install/run_agent_as_root), [4.4](https://www.zabbix.com/documentation/4.4/manual/appendix/install/run_agent_as_root)).
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Create a directory for configuration file:
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```console
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mkdir /etc/systemd/system/zabbix-agent.service.d
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```
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Create file `/etc/systemd/system/zabbix-agent.service.d/override.conf` with the following content:
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```console
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[Service]
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User=root
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Group=root
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```
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Reload daemons and restart `zabbix-agent` service:
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```console
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systemctl daemon-reload
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systemctl restart zabbix-agent
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```
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Check again that the Zabbix agent runs as `root` now.
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##### 1.3.2. Method #2. Grant privileges to the PHP-FPM auto discovery script only
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If you don't want to run Zabbix Agent as root, then you can configure the privileges only to our script. In this case you need to have `sudo` installed:
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```console
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apt-get install sudo
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```
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Now edit the `/etc/sudoers` file by running command:
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```console
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visudo
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```
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Add the following line to this file:
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```
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zabbix ALL = NOPASSWD: /etc/zabbix/zabbix_php_fpm_discovery.sh
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```
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Here we specified `zabbix` as the user under which the Zabbix Agent is run. This is the default name, but if you have a custom installation with different name, then please, change it accordingly. Save and exit the editor. Your modifications will be applied.
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Now edit the file `userparameter_php_fpm.conf`. Find the line:
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```
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UserParameter=php-fpm.discover[*],/etc/zabbix/zabbix_php_fpm_discovery.sh $1
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```
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Add `sudo` there, so the line should be:
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```
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UserParameter=php-fpm.discover[*],sudo /etc/zabbix/zabbix_php_fpm_discovery.sh $1
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```
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That's all.
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#### 1.4. Linux Tuning (optional)
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Usually PHP-FPM [backlog option](https://www.php.net/manual/en/install.fpm.configuration.php#listen-backlog) is limited by Linux kernel settings and equals to `128` by default.
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In most cases you want to increase this value (latest PHP use `511` by default).
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The main option that limits the PHP-FPM backlog option is `net.core.somaxconn`.
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See the current setting, usually it's `128`:
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```console
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cat /proc/sys/net/core/somaxconn
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128
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```
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Let's increase it to 1024:
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```console
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echo "net.core.somaxconn=1024" >> /etc/sysctl.conf
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```
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Now we can cause the settings to be loaded by running:
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```console
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sysctl -p
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```
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#### 1.5. Adjust ISPConfig
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This step is required only if you use [ISPConfig](https://www.ispconfig.org/).
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ISPConfig does not enable PHP-FPM status page by default.
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We will enable it by making an override of original template of ISPConfig and add a custom directive there.
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Please, check the installation path of ISPConfig in your system.
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Below we use default paths as used in Debian 9/10.
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Please, use one of the methods below to adjust the settings of ISPConfig.
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**Note**: every time you upgrade the ISPConfig you may want to perform the operations below again to use the latest PHP-FPM template shipped with ISPConfig.
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##### 1.5.1. Method #1. Apply a patch
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**Caution**: don't use this method if you already have your own customizations of the PHP-FPM template in ISPConfig.
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Apply the patch using the following command:
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```console
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patch /usr/local/ispconfig/server/conf/php_fpm_pool.conf.master --input=/tmp/zabbix-php-fpm/ispconfig.patch --output=/usr/local/ispconfig/server/conf-custom/php_fpm_pool.conf.master --reject-file=-
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```
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##### 1.5.2. Method #2. Manually adjust the template
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Use this method if any of the statements below are true:
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- the patch above does not work
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- you already have your own customizations of the PHP-FPM template in ISPConfig
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- you prefer to have a full control of what happens on your server.
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First we need to copy the original template file `php_fpm_pool.conf.master` of ISPConfig to the override directory (don't do that if you already have your own customizations of the PHP-FPM template in ISPConfig - in this case you should already have the required file in the required location):
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```console
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cp /usr/local/ispconfig/server/conf/php_fpm_pool.conf.master /usr/local/ispconfig/server/conf-custom/
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```
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Edit the copied file `/usr/local/ispconfig/server/conf-custom/php_fpm_pool.conf.master` and add there the following line after the last `pm` setting:
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```
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pm.status_path = /php-fpm-status
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```
|
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In our version of ISPConfig the last `pm` setting is `pm.max_requests`, so the resulting part of the file will have the following contents (the new line is bold):
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<pre>
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<tmpl_if name='pm' op='==' value='ondemand'>
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pm.process_idle_timeout = <tmpl_var name='pm_process_idle_timeout'>s;
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</tmpl_if>
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pm.max_requests = <tmpl_var name='pm_max_requests'>
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<b>pm.status_path = /php-fpm-status</b>
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chdir = /
|
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<tmpl_if name='php_fpm_chroot'>
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</pre>
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##### 1.5.3. Final adjustments for ISPConfig
|
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|
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Set correct access rights:
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```console
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chmod +x /usr/local/ispconfig/server/conf-custom/php_fpm_pool.conf.master
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```
|
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|
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Now resync the websites using ISPConfig control panel: go to `"Tools"->"Sync Tools"->"Resync"`.
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Check "Websites" only and click "Start":
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### 1.6. Adjust PHP-FPM pools configuration
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This step is required if you don't use ISPConfig.
|
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In this case you need to enable the PHP-FPM status page for all of your pools manually.
|
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Each pool must have the same status path, recommended value is `/php-fpm-status`.
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Please, edit all the pools configuration files (for example for PHP 7.3 they are located in directory `/etc/php/7.3/fpm/pool.d`) by adding the following line:
|
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|
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```
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pm.status_path = /php-fpm-status
|
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```
|
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|
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You can set another path here if needed. Finally, restart the PHP-FPM, for example:
|
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|
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```console
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service php7.3-fpm restart
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```
|
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|
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#### 1.7. Clean up
|
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Delete temporary files:
|
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|
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```console
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rm /tmp/zabbix-php-fpm.zip
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rm -rf /tmp/zabbix-php-fpm/
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```
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|
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### 2. On Zabbix Server
|
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#### 2.1. Import Zabbix PHP-FPM template
|
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Download this project's archive to your computer (the release must be the same you selected when installing template archive at Zabbix agent):
|
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|
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- To use a stable release, open the [latest release page](https://github.com/rvalitov/zabbix-php-fpm/releases/latest) and click on "Source code (zip)" button at the end of the page.
|
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- To use a developement version, download [this archive](https://github.com/rvalitov/zabbix-php-fpm/archive/master.zip).
|
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|
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Extract the XML template file from the archive that corresponds to your version of Zabbix server.
|
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For example, use file `/zabbix/zabbix_php_fpm_template_4.0.xml` for Zabbix server 4.0. If there's no version of the template that matches your version of Zabbix server, then try to use the nearest version of the template that is not higher than your version of Zabbix server.
|
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For example, template version 4.0 also works for higher versions of Zabbix server, such as 4.2 and 4.4. But template version 4.0 will not work for Zabbix 3.x.
|
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Upload the extracted file to your Zabbix server. To do so go to `"Configuration"->"Templates"->"Import"` in Zabbix frontend:
|
||||
|
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|
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#### 2.2. Add the template to your hosts
|
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Add template "Template App PHP-FPM" to the desired hosts.
|
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If you use a custom status path (the default is `/php-fpm-status`), then configure it in the macros section of the host by adding value:
|
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|
||||
```
|
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{$PHP_FPM_STATUS_URL}=your status path
|
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```
|
||||
|
||||
The setup is finished, just wait a couple of minutes till Zabbix discovers all your pools and captures the data.
|
||||
# Installation and configuration
|
||||
Please refer to [Wiki](https://github.com/rvalitov/zabbix-php-fpm/wiki/Installation).
|
||||
|
||||
# Testing and Troubleshooting
|
||||
## Check auto discovery
|
||||
First test that auto discovery of PHP-FPM pools works on your machine. Run the following command (replace `POOL_PATH` with the status path of PHP-FPM that you set in [`pm.status_path`](https://github.com/rvalitov/zabbix-php-fpm#16-adjust-php-fpm-pools-configuration), the default value is `/php-fpm-status`):
|
||||
|
||||
```console
|
||||
root@server:/etc/zabbix#bash /etc/zabbix/zabbix_php_fpm_discovery.sh POOL_PATH
|
||||
```
|
||||
**Important:** please make sure that you use `bash` in the command above, not `sh` or other alternatives, otherwise you may get a script syntax error message.
|
||||
|
||||
The output should be a valid JSON with a list of pools and their sockets, something like below (you may want to use [online JSON tool](https://jsonformatter.curiousconcept.com/) for pretty formatting of the response):
|
||||
|
||||
```json
|
||||
{
|
||||
"data":[
|
||||
{
|
||||
"{#POOLNAME}":"web1",
|
||||
"{#POOLSOCKET}":"/var/lib/php7.3-fpm/web1.sock"
|
||||
},
|
||||
{
|
||||
"{#POOLNAME}":"web4",
|
||||
"{#POOLSOCKET}":"/var/lib/php7.3-fpm/web4.sock"
|
||||
},
|
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{
|
||||
"{#POOLNAME}":"www",
|
||||
"{#POOLSOCKET}":"127.0.0.1:9000"
|
||||
}
|
||||
]
|
||||
}
|
||||
```
|
||||
|
||||
For further investigation you can run the script above with `debug` option to get more details, example:
|
||||
```console
|
||||
root@server:/etc/zabbix#bash /etc/zabbix/zabbix_php_fpm_discovery.sh POOL_PATH debug
|
||||
Debug mode enabled
|
||||
Success: found socket /var/lib/php7.3-fpm/web1.sock for pool web1, raw process info: php-fpm7. 5094 web1 11u unix 0x00000000dd9ea858 0t0 104495372 /var/lib/php7.3-fpm/web1.sock type=STREAM
|
||||
Success: found socket /var/lib/php7.3-fpm/web4.sock for pool web4, raw process info: php-fpm7. 5096 web4 11u unix 0x00000000562748dd 0t0 104495374 /var/lib/php7.3-fpm/web4.sock type=STREAM
|
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Success: found socket /run/php/php7.3-fpm.sock for pool www, raw process info: php-fpm7. 5098 www-data 11u unix 0x00000000ef5ef2fb 0t0 104495376 /run/php/php7.3-fpm.sock type=STREAM
|
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Resulting JSON data for Zabbix:
|
||||
{"data":[{"{#POOLNAME}":"web1","{#POOLSOCKET}":"/var/lib/php7.3-fpm/web1.sock"},{"{#POOLNAME}":"web4","{#POOLSOCKET}":"/var/lib/php7.3-fpm/web4.sock"},{"{#POOLNAME}":"www","{#POOLSOCKET}":"/run/php/php7.3-fpm.sock"}]}
|
||||
```
|
||||
|
||||
Any warning or error messages will be displayed here.
|
||||
|
||||
**Note:** having a warning messages does not necessarily mean that you have a error here, because different OS may provide data about processes differently. So, if you don't see any error messages here, then the script works fine.
|
||||
|
||||
The script can show you the list of utilities that are missing on your system and must be installed. We require the following utilities to be installed:
|
||||
|
||||
- `awk`
|
||||
- `ps`
|
||||
- `grep`
|
||||
- `sort`
|
||||
- `head`
|
||||
- `lsof`
|
||||
- `jq`
|
||||
|
||||
If some pools are missing, then you can manually check that they do really exist and are running, for example, using command:
|
||||
|
||||
```console
|
||||
ps aux | grep "php-fpm"
|
||||
```
|
||||
|
||||
In the list you should see your pool. If it's not there, then it means it's not running (not functional).
|
||||
|
||||
## How to troubleshoot template import failure
|
||||
To view the import errors, please click the "Details" section in the Zabbix GUI. It should be on the same import page near the error message:
|
||||
|
||||
|
||||
|
||||
Then check the Zabbix server log, for Debian/Ubuntu it's located at `/var/log/zabbix/zabbix_server.log`.
|
||||
|
||||
## Test with `zabbix_get`
|
||||
Please, use the [`zabbix_get`](https://www.zabbix.com/documentation/4.4/manual/concepts/get) utility from your Zabbix Server to test that you can get the data from the Zabbix Agent (host).
|
||||
|
||||
### Installation
|
||||
Please, install this utility first, because usually it's not installed automatically:
|
||||
|
||||
```console
|
||||
apt-get install zabbix-get
|
||||
```
|
||||
|
||||
### Command examples
|
||||
In the examples below we use the following parameter names:
|
||||
|
||||
- `ZABBIX_HOST_IP` is the IP address of the host where the Zabbix Agent is installed and where the PHP-FPM is running, for example `127.0.0.1`
|
||||
- `ZABBIX_HOST_PORT` is the port of the Zabbix Agent, for example `10050`
|
||||
- `POOL_URL` is the socket of the pool or IP and port combination, example: `/var/lib/php7.3-fpm/web1.sock` or `127.0.0.1:9000`
|
||||
- `POOL_PATH` is the status path of PHP-FPM that you set in [`pm.status_path`](https://github.com/rvalitov/zabbix-php-fpm#16-adjust-php-fpm-pools-configuration), the default value is `/php-fpm-status`.
|
||||
|
||||
All commands should return valid JSON data. If any error happens then it will be displayed.
|
||||
|
||||
#### 1. Discover PHP-FPM pools
|
||||
Command syntax:
|
||||
|
||||
```
|
||||
zabbix_get -s ZABBIX_HOST_IP -p ZABBIX_HOST_PORT -k php-fpm.discover["POOL_URL"]
|
||||
```
|
||||
|
||||
Command output example:
|
||||
```console
|
||||
root@server:/# zabbix_get -s 127.0.0.1 -p 10050 -k php-fpm.discover["/php-fpm-status"]
|
||||
{"data":[{"{#POOLNAME}":"www","{#POOLSOCKET}":"/run/php/php7.3-fpm.sock"},{"{#POOLNAME}":"www2","{#POOLSOCKET}":"localhost:9001"}]}
|
||||
```
|
||||
|
||||
Most common problems of testing the `php-fpm.discover` key:
|
||||
|
||||
- The resulting JSON data is empty, but the discovery script started manually works. Then it's a problem of insufficient privileges of Zabbix agent. Please, check again section "Root privileges" of this document.
|
||||
- Error `ZBX_NOTSUPPORTED: Unsupported item key`. It means the `userparameter_php_fpm.conf` file is ignored by the Zabbix agent. Please, make sure that you copied this file to correct location and you have restarted the Zabbix agent.
|
||||
- Error `php_fpm.cache: Permission denied` means that the script has insufficient permissions. Please, check that you granted privileges to the PHP-FPM auto discovery script or run Zabbix agent as root user. Please, check again section "Root privileges" of this document.
|
||||
- Message `Error: write permission is not granted to user USER for cache file php_fpm.cache` means that the user of Zabbix agent does not have required privileges. Please, check that you granted privileges to the PHP-FPM auto discovery script or run Zabbix agent as root user. Please, check again section "Root privileges" of this document. You may need to manually delete the `php_fpm.cache` after granting the privileges.
|
||||
|
||||
#### 2. Get status of required pool
|
||||
Command syntax:
|
||||
|
||||
```console
|
||||
zabbix_get -s ZABBIX_HOST_IP -p ZABBIX_HOST_PORT -k php-fpm.discover.status["POOL_URL","POOL_PATH"]
|
||||
```
|
||||
|
||||
Command output example:
|
||||
|
||||
```console
|
||||
root@server:/# zabbix_get -s 127.0.0.1 -p 10050 -k php-fpm.status["localhost:9001","/php-fpm-status"]
|
||||
{"pool":"www2","process manager":"static","start time":1578093850,"start since":149,"accepted conn":3,"listen queue":0,"max listen queue":0,"listen queue len":511,"idle processes":4,"active processes":1,"total processes":5,"max active processes":1,"max children reached":0,"slow requests":0}
|
||||
```
|
||||
Please refer to [Wiki](https://github.com/rvalitov/zabbix-php-fpm/wiki/Testing-and-Troubleshooting).
|
||||
|
||||
# Compatibility
|
||||
Should work with any version of PHP-FPM (starting with PHP 5.3.3), Zabbix 4.0.x and later.
|
||||
|
||||
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Reference in New Issue
Block a user