Selective task execution v23
Using task selectors
You can tell TPA to run only a subset of the tasks that constitute a
full deployment using the --excluded_tasks and --included_tasks
options to tpaexec deploy. Each of these arguments is a
string treated as a comma-separated list of selectors. Equivalently, you can set the
excluded_tasks and included_tasks variables in config.yml, either
for the whole cluster or for the separate instances. In config.yml,
you can use either a comma-separated string or a yaml list.
Tasks matched by excluded_tasks are always excluded. If you specify
included_tasks, then non-matching tasks are implicitly excluded.
Some selectors may be used in either list, and some only in the
excluded_tasks list, as detailed below. A separate set of selectors is
available for tpaexec test.
Examples
To deploy without running barman-related tasks:
[tpa]$ tpaexec deploy <clustername> --excluded_tasks barman
To deploy running only repmgr-related tasks:
[tpa]$ tpaexec deploy <clustername> --included_tasks repmgr
To deploy without trying to set hostnames on the instances:
[tpa]$ tpaexec deploy <clustername> --excluded_tasks hostname
To prevent bootstrap and ssh tasks from ever running, put the following
into config.yml:
cluster_vars: excluded_tasks: - bootstrap - ssh
Supported selectors for tpaexec deploy
The following selectors are supported for either inclusion or exclusion:
barman
Tasks related to Barman.
bdr
Tasks related to setting up BDR, including when it is as used within a PGD cluster. If this selector is excluded, TPA will still install and configure the extension as specified in config.yml, but won't create the node groups or try to join the nodes.
efm
Tasks related to EFM.
etcd
Tasks related to etcd.
first-backup
Tasks which ensure the minimum number of barman backups exist.
haproxy
Tasks related to haproxy.
harp
Tasks related to harp.
patroni
Tasks related to patroni.
pem-agent
Tasks related to the PEM agent.
pem-server
Tasks related to the PEM server.
pem-webserver
Tasks related to configuring the web server on a PEM server.
pg-backup-api
Tasks related to Barman's Postgres backup API.
pgbouncer
Tasks related to PgBouncer.
pgd-proxy
Tasks related to PGD Proxy.
pglogical
Tasks related to pglogical.
pkg
Tasks which install packages using the system package manager.
postgres
Tasks related to postgres.
replica
Tasks which are run and instances acting as postgres replicas.
repmgr
Tasks related to repmgr.
restart
Tasks which restart services
sys
Tasks related to system setup before any tasks specific to postgres or related software.
zabbix-agent
Tasks related to the zabbix agent.
The following selectors are supported only for exclusion:
artifacts
Tasks related to artifacts.
barman-clean
Tasks which clean up the Barman build directory if Barman is being built from source.
bootstrap
Tasks which ensure that python and other minimal dependencies are present before the rest of the deploy runs. Exclude this only if you are sure you have manually installed the relevant requirements.
build-clean
Tasks which clean up build directories for any software that is being built from source.
build-configure
Tasks which configure any software that is being built from source.
cloudinit
Tasks which are run only on hosts managed by cloud-init.
commit-scopes
Tasks related to configuration of BDR commit scopes.
config
Tasks which create config files.
fs
Tasks related to setting up additional volumes on instances.
hostkeys
Tasks which set up ssh host keys.
hostname
Tasks which set the hostname.
hosts
Tasks which add entries to /etc/hosts
initdb
Tasks which run initdb.
local-repo
Tasks which set up local package repositories.
locale
Tasks which install locale support.
openvpn
Tasks which set up OpenVPN.
pg-backup-api-clean
Tasks which clean up the build directory if the Postgres backup API is being built from source.
pgbouncer-config
Tasks which create configuration files for pgbouncer.
pgpass
Tasks which create the .pgpass file.
postgres-clean
Tasks which clean up the build directory if postgres is being built from source.
replication-sets
Tasks related to witness-only replication sets on a BDR3 cluster.
repmgr-clean
Tasks which clean up the build directory if repmgr is being built from source.
repmgr-configure
Tasks which configure repmgr if it is being built from source.
repo
Tasks which set up package repositories.
rsyslog
Tasks related to rsyslog.
service
Tasks related to system services, including configuration and restarting.
src
Tasks which build and install packages from source.
ssh
Tasks related to setting up ssh between instances.
sysctl
Tasks which set and reload sysctl settings.
sysstat
Tasks releated to the sysstat service.
tpa
Tasks related to TPA's own files installed on instances.
user
Tasks related to setting up system users.
watchdog
Tasks related to the kernel watchdog on a patroni cluster.
Supported selectors for tpaexec test
The following selectors apply only for execution of tpaexec test:
camo
Tasks related to testing CAMO in a BDR or PGD cluster.
ddl
Tasks related to testing DDL in a BDR or PGD cluster.
fail
Tasks which abort tests if a problem is detected. Exclude this selector to run tests regardless of failures.
pgbench
Tasks which run pgbench.
sys
Tasks which run system-level tests.
barman, bdr, haproxy, pg-backup-api, pgbouncer, pgd-proxy, postgres, repmgr,
Tasks which test the various software components.