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The following commit(s) were added to refs/heads/master by this push:
new d6ff9eb HDDS-14767. Added an option to set max open files for SCM, OM
and DN (#12)
d6ff9eb is described below
commit d6ff9ebb6c27d5c1f3b741f47f35373b5cb9818f
Author: Andrey Yarovoy <[email protected]>
AuthorDate: Thu Mar 12 15:05:07 2026 -0400
HDDS-14767. Added an option to set max open files for SCM, OM and DN (#12)
---
inventories/dev/group_vars/all.yml | 3 +++
roles/ozone_service/tasks/main.yml | 30 +++++++++++++++++++++++++-----
2 files changed, 28 insertions(+), 5 deletions(-)
diff --git a/inventories/dev/group_vars/all.yml
b/inventories/dev/group_vars/all.yml
index 817c47a..12db898 100644
--- a/inventories/dev/group_vars/all.yml
+++ b/inventories/dev/group_vars/all.yml
@@ -33,6 +33,9 @@ data_base: "/data/ozone"
jdk_major: 17
ozone_java_home: "" # autodetected if empty
+# Max number of open files for Ozone SCM, OM and DN processes (ulimit -n).
+ozone_nofile_limit: 65536
+
# Service user/group
service_user: "ozone"
service_group: "ozone"
diff --git a/roles/ozone_service/tasks/main.yml
b/roles/ozone_service/tasks/main.yml
index 09ac7ec..b26d23c 100644
--- a/roles/ozone_service/tasks/main.yml
+++ b/roles/ozone_service/tasks/main.yml
@@ -37,7 +37,11 @@
failed_when: scm_init_first.rc != 0
- name: "Start first SCM"
- command: "{{ ozone_bin }} --daemon start scm"
+ shell: |-
+ ulimit -n {{ ozone_nofile_limit | int }}
+ "{{ ozone_bin }}" --daemon start scm
+ args:
+ executable: "{{ service_shell | default('/bin/bash') }}"
when: (groups['scm'] | length > 0) and (inventory_hostname ==
groups['scm'][0])
register: scm_start_first
failed_when: scm_start_first.rc != 0
@@ -51,7 +55,11 @@
failed_when: om_init_first.rc != 0
- name: "Start first OM"
- command: "{{ ozone_bin }} --daemon start om"
+ shell: |-
+ ulimit -n {{ ozone_nofile_limit | int }}
+ "{{ ozone_bin }}" --daemon start om
+ args:
+ executable: "{{ service_shell | default('/bin/bash') }}"
when: (groups['om'] | length > 0) and (inventory_hostname ==
groups['om'][0])
register: om_start_first
failed_when: om_start_first.rc != 0
@@ -66,7 +74,11 @@
failed_when: scm_bootstrap_rest.rc != 0
- name: "Start SCM on remaining SCMs"
- command: "{{ ozone_bin }} --daemon start scm"
+ shell: |-
+ ulimit -n {{ ozone_nofile_limit | int }}
+ "{{ ozone_bin }}" --daemon start scm
+ args:
+ executable: "{{ service_shell | default('/bin/bash') }}"
when: "'scm' in groups and (groups['scm'] | length > 1) and
(inventory_hostname in groups['scm'][1:])"
register: scm_start_rest
failed_when: scm_start_rest.rc != 0
@@ -78,7 +90,11 @@
failed_when: om_init_rest.rc != 0
- name: "Start OM on remaining OMs"
- command: "{{ ozone_bin }} --daemon start om"
+ shell: |-
+ ulimit -n {{ ozone_nofile_limit | int }}
+ "{{ ozone_bin }}" --daemon start om
+ args:
+ executable: "{{ service_shell | default('/bin/bash') }}"
when: "'om' in groups and (groups['om'] | length > 1) and
(inventory_hostname in groups['om'][1:])"
register: om_start_rest
failed_when: om_start_rest.rc != 0
@@ -90,7 +106,11 @@
environment: "{{ ozone_runtime_env }}"
block:
- name: "Start Datanodes"
- command: "{{ ozone_bin }} --daemon start datanode"
+ shell: |-
+ ulimit -n {{ ozone_nofile_limit | int }}
+ "{{ ozone_bin }}" --daemon start datanode
+ args:
+ executable: "{{ service_shell | default('/bin/bash') }}"
when: inventory_hostname in (groups.get('datanodes', []))
async: 300
poll: 0
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