Infrastructure at your Service

Daniel Westermann

A first look at EDB Postgres Enterprise Manager 7 beta – Connecting a PostgreSQL instance

In the last post we did a click/click/click setup of the PEM server. What we want to do now is to attach a PostgreSQL instance to the PEM server for being able to monitor and administer it. For that we need to install the PEM agent on a host where we have a PostgreSQL instance running (192.168.22.249 in my case, which runs PostgreSQL 10 Beta1). Lets go …

As usual, when you want to have the systemd services generated automatically you should run the installation as root:

[root@pemclient postgres]# ls
pem_agent-7.0.0-beta1-1-linux-x64.run
[root@pemclient postgres]# chmod +x pem_agent-7.0.0-beta1-1-linux-x64.run 
[root@pemclient postgres]# ./pem_agent-7.0.0-beta1-1-linux-x64.run 

The installation itself is not a big deal, just follow the screens:

pem_agent1
pem_agent2
pem_agent3
pem_agent4
pem_agent5
pem_agent6
pem_agent7
pem_agent8
pem_agent9

Once done we have a new systemd service:

[root@pemclient postgres]# systemctl list-unit-files | grep pem
pemagent.service                              enabled 

… and the processes that make up the PEM agent:

[root@pemclient postgres]# ps -ef | grep pem
root      3454     1  0 16:40 ?        00:00:00 /u01/app/postgres/product/pem7/agent/agent/bin/pemagent -c /u01/app/postgres/product/pem7/agent/agent/etc/agent.cfg
root      3455  3454  0 16:40 ?        00:00:00 /u01/app/postgres/product/pem7/agent/agent/bin/pemworker -c /u01/app/postgres/product/pem7/agent/agent/etc/agent.cfg --pid 3454
root      3515  2741  0 16:43 pts/0    00:00:00 grep --color=auto pem

Heading back to the PEM web interface the new agent is visible immediately:
pem_agent10

So, lets add the instance:
pem_agent11
pem_agent12
pem_agent17
pem_agent14
pem_agent15

Of course, we need to allow connections to our PostgreSQL instance from the PEM server. Adding this to the pg_hba.conf and reloading the instance fixes the issue:

host    all             all             192.168.22.248/32       md5

Once done:
pem_agent16

… and the instance is there.

In the next post we’ll setup some monitoring for our newly added PostgreSQL instance.

 

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Daniel Westermann
Daniel Westermann

Senior Consultant and Technology Leader Open Infrastructure