Groups

Groups are a way to represent a portion of your logs. Examples:

When should I use groups?

Create groups for different sets of senders (typically systems) that you frequently examine logs from.

Senders may be part of multiple groups. For example, a Web server in NYC may be in the groups “Web servers”, “NYC colo”, and “E-commerce site”.

Think of groups and searches as far more flexible equivalents to a log file name. Groups decide which senders should be examined. Searches can further refine the logs that you see from those senders (by log file name/program name and many other attributes, even sender).

When the account was created, Papertrail automatically added a group called All Systems or All Apps that contains every sender. When you create a new group, it will appear on the Dashboard along with that group.

How are groups different from searches?

Groups are sets of senders, typically systems. Searches can further constrain which log messages are shown, creating a view of only certain messages from the senders in that group.

A search examines the logs from the senders that are part of that group. When a group is created, Papertrail automatically includes an All events search for you. This search simply applies no further constraints. For example, clicking the All events search within the All Systems group shows all messages from all systems.

Frequently-used searches can be saved within the relevant group. For example, within a “DB servers” group, there might be searches called “Slow queries”, “Deadlocks”, and “UPDATE queries”, each of which provides a different filtered view of the logs.

Using groups

How can I add new systems to a group?

To change a group’s name or add or remove senders, click the name of the group, like SJC datacenter in this screenshot:

sjc_datacenter_name.png

On the group detail page, click Edit Settings & Membership in the upper right corner:

edit_settings.png

On the group settings page, add or remove individual systems by checking or un-checking the box next to the system.

The automatically-created group All Systems or All Apps is not editable.

Can new systems automatically join groups?

Yes. See mapping senders to groups.

Can searches refine which senders’ logs are shown (without creating a new group)?

Yes. Imagine that one search needs to exclude logs from a sender that is a member of the group. For example, there is an existing group called “Web servers” that includes a sender called www42. In one specific search in the “Web servers” group, logs from www42 should be excluded.

Because this specific set of systems (“Web servers except www42”) is not frequently examined, it probably doesn’t justify creating a new group. In that case, use the search query to exclude logs from www42.

Use the sender search attribute plus the - (hyphen) negation operator. For example:

abc def "something else" -sender:www42

This will run the abc def "something else" search, but with an additional operator to exclude logs from any senders whose name contains www42.