# bind loopback and default IP **URL:** \ **Category:** Ansible Project\ **Created:** [September 29, 2020, 1:21am UTC](https://forum.ansible.com/t/bind-loopback-and-default-ip/33918 "2020-09-29T01:21:43Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Andrew\_Meyer1](https://avatars.discourse-cdn.com/v4/letter/a/df705f/32.png) [@Andrew\_Meyer1](https://forum.ansible.com/u/Andrew_Meyer1)\ **Post date:** [September 29, 2020, 1:21am UTC](https://forum.ansible.com/t/bind-loopback-and-default-ip/33918/1 "2020-09-29T01:21:43Z")
I am writing a redis playbook and I want to have any new redis replication node built listen on the loopback address AND default IP address. I am having trouble trying to figure out how to achieve this. I have it set up in my jijna template like this: bind {{ hostvars[inventory\_hostname][‘ansible\_default\_ipv4’][‘address’] }} This is what I have in my defaults/main.yml redis\_bind\_interface: 127.0.0.1 “{{ ansible\_all\_ipv4\_addresses }}” Thanks in advance! ---
**Author:** ![Dick\_Visser](https://avatars.discourse-cdn.com/v4/letter/d/d9b06d/32.png) [@Dick\_Visser](https://forum.ansible.com/u/Dick_Visser)\ **Post date:** [September 29, 2020, 5:22am UTC](https://forum.ansible.com/t/bind-loopback-and-default-ip/33918/2 "2020-09-29T05:22:56Z")
The jinja template doesn't use this 'redis\_bind\_interface' variable? But if you want to use it, you should define it like this in your playbook (or role, judging by the file name): redis\_bind\_interface: "127.0.0.1 {{ ansible\_all\_ipv4\_addresses | join (' ') }}" Note that ansible\_all\_ipv4\_addresses is a list, so you have to join it using a space. Then refer to it like this in your template: bind {{ redis\_bind\_interface }} ---
**Author:** ![Andrew\_Meyer1](https://avatars.discourse-cdn.com/v4/letter/a/df705f/32.png) [@Andrew\_Meyer1](https://forum.ansible.com/u/Andrew_Meyer1)\ **Post date:** [September 29, 2020, 2:24pm UTC](https://forum.ansible.com/t/bind-loopback-and-default-ip/33918/3 "2020-09-29T14:24:37Z")
Getting this after running the playbook fatal: [10.150.1.128]: FAILED! =\> { “changed”: false, “msg”: “AnsibleError: An unhandled exception occurred while templating ‘127.0.0.1 {{ ansible\_all\_ipv4\_address|join[‘0’] }}’. Error was a \, original message: template error while templating string: expected token ‘end of print statement’, got ‘[’. String: 127.0.0.1 {{ ansible\_all\_ipv4\_address|join[‘0’] }}” } Thisi s from my defaults/main.yml redis\_bind\_interface: “127.0.0.1 {{ ansible\_all\_ipv4\_address|join[‘0’] }}” This is from the templated jinja bind {{ redis\_bind\_interface }} ---
**Author:** ![racke](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/racke/32/4767_2.png) [@racke](https://forum.ansible.com/u/racke)\ **Post date:** [September 29, 2020, 2:28pm UTC](https://forum.ansible.com/t/bind-loopback-and-default-ip/33918/4 "2020-09-29T14:28:20Z")
> Getting this after running the playbook > > fatal: [10.150.1.128]: FAILED! =\> { > "changed": false, > "msg": "AnsibleError: An unhandled exception occurred while templating '127.0.0.1 {{ > ansible\_all\_ipv4\_address|join['0'] }}'. Error was a \, original message: template > error while templating string: expected token 'end of print statement', got '['. String: 127.0.0.1 {{ > ansible\_all\_ipv4\_address|join['0'] }}" > } > > Thisi s from my defaults/main.yml > redis\_bind\_interface: "127.0.0.1 {{ ansible\_all\_ipv4\_address|join['0'] }}" > > This is from the templated jinja > bind {{ redis\_bind\_interface }} Why do you use join['0'] ? Regards          Racke ---
**Author:** ![Dick\_Visser](https://avatars.discourse-cdn.com/v4/letter/d/d9b06d/32.png) [@Dick\_Visser](https://forum.ansible.com/u/Dick_Visser)\ **Post date:** [September 29, 2020, 2:59pm UTC](https://forum.ansible.com/t/bind-loopback-and-default-ip/33918/5 "2020-09-29T14:59:52Z")
That is because you did not use the instruction that I gave, but instead mangled it so that it now gives errors. Just copy paste what I wrote for redis\_bind\_interface. ---
**Author:** ![Andrew\_Meyer1](https://avatars.discourse-cdn.com/v4/letter/a/df705f/32.png) [@Andrew\_Meyer1](https://forum.ansible.com/u/Andrew_Meyer1)\ **Post date:** [September 29, 2020, 3:32pm UTC](https://forum.ansible.com/t/bind-loopback-and-default-ip/33918/6 "2020-09-29T15:32:16Z")
I ended up doing this: redis\_bind\_interface: “127.0.0.1 {{ ansible\_default\_ipv4.address }}” However now I’m having issues copying the config file to the newly built server. It shows that it is making the change to the /etc/redis.conf but the change doesn’t make it. I have tried renaming the current config file and it still won’t do it. I have full sudo rights ( my own lab box) and I have a become directive in my template block. - name: Ensure Redis is configured. template: src: redis.conf.j2 dest: “{{ redis\_conf\_path }}” mode: 0640 owner: redis group: root backup: yes force: yes become: true notify: restart redis ---
**Author:** ![racke](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/racke/32/4767_2.png) [@racke](https://forum.ansible.com/u/racke)\ **Post date:** [September 29, 2020, 3:37pm UTC](https://forum.ansible.com/t/bind-loopback-and-default-ip/33918/7 "2020-09-29T15:37:10Z")
> I ended up doing this: > redis\_bind\_interface: "127.0.0.1 {{ ansible\_default\_ipv4.address }}" > > However now I'm having issues copying the config file to the newly built server. It shows that it is making the change > to the /etc/redis.conf but the change doesn't make it. I have tried renaming the current config file and it still won't > do it. I have full sudo rights ( my own lab box) and I have a become directive in my template block. > > - name: Ensure Redis is configured. > template: > src: redis.conf.j2 > dest: "{{ redis\_conf\_path }}" > mode: 0640 > owner: redis > group: root > backup: yes > force: yes > become: true > notify: restart redis Can you show the output of this task with using --diff when executing your play book? Regards         Racke ---
**Author:** ![Andrew\_Meyer1](https://avatars.discourse-cdn.com/v4/letter/a/df705f/32.png) [@Andrew\_Meyer1](https://forum.ansible.com/u/Andrew_Meyer1)\ **Post date:** [September 30, 2020, 3:54pm UTC](https://forum.ansible.com/t/bind-loopback-and-default-ip/33918/8 "2020-09-30T15:54:05Z")
TASK [redis : Ensure Redis is configured.] \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* task path: /opt/syseng/automation/ansible/playbooks/roles/redis/tasks/main.yml:24 NOTIFIED HANDLER redis : restart redis for 10.150.1.128 — before: /etc/redis.conf +++ after: /home/andrew.meyer/.ansible/tmp/ansible-local-2556111vlumpr9k/tmpvxxyrw0q/redis.conf.j2 @@ -0,0 +1,44 @@ +# Ansible managed ---
**Author:** ![racke](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/racke/32/4767_2.png) [@racke](https://forum.ansible.com/u/racke)\ **Post date:** [September 30, 2020, 3:59pm UTC](https://forum.ansible.com/t/bind-loopback-and-default-ip/33918/9 "2020-09-30T15:59:56Z")
> TASK [redis : Ensure Redis is configured.] > \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* > task path: /opt/syseng/automation/ansible/playbooks/roles/redis/tasks/main.yml:24 > NOTIFIED HANDLER redis : restart redis for 10.150.1.128 > --- before: /etc/redis.conf > +++ after: /home/andrew.meyer/.ansible/tmp/ansible-local-2556111vlumpr9k/tmpvxxyrw0q/redis.conf.j2 > @@ -0,0 +1,44 @@ > +# Ansible managed > + > +daemonize no > +pidfile /var/run/redis/redis.pid > +port 6379 > +bind 127.0.0.1 10.150.1.128 > + > + > +supervisd systemd > + > +timeout 300 > + > +protected mode False > + > +loglevel notice > +logfile /var/log/redis/redis-server.log > + > +# To enable logging to the system logger, just set 'syslog-enabled' to yes, > +# and optionally update the other syslog parameters to suit your needs. > +# syslog-enabled no > +# syslog-ident redis > +# syslog-facility local0 > + > +databases 16 > + > +save 900 1 > +save 300 10 > +save 60 10000 > + > +rdbcompression yes > +dbfilename dump.rdb > +dir /var/lib/redis > + > +# maxclients 128 > + > + > +appendonly yes > +appendfsync everysec > +no-appendfsync-on-rewrite no > +appendfilename appendonly.aof > + > + > + > + > > changed: [10.150.1.128] =\> {"changed": true} So you are saying that content doesn't end up in /etc/redis.conf on your server (IP 10.150.1.128) ? Regards        Racke ---
**Author:** ![Dick\_Visser](https://avatars.discourse-cdn.com/v4/letter/d/d9b06d/32.png) [@Dick\_Visser](https://forum.ansible.com/u/Dick_Visser)\ **Post date:** [September 30, 2020, 4:34pm UTC](https://forum.ansible.com/t/bind-loopback-and-default-ip/33918/10 "2020-09-30T16:34:33Z")
Are you sure you're not running in check mode? ---
**Author:** ![racke](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/racke/32/4767_2.png) [@racke](https://forum.ansible.com/u/racke)\ **Post date:** [September 30, 2020, 4:36pm UTC](https://forum.ansible.com/t/bind-loopback-and-default-ip/33918/11 "2020-09-30T16:36:23Z")
> Are you sure you're not running in check mode? Or looking at the wrong server? Regards         Racke ---
**Author:** ![Andrew\_Meyer1](https://avatars.discourse-cdn.com/v4/letter/a/df705f/32.png) [@Andrew\_Meyer1](https://forum.ansible.com/u/Andrew_Meyer1)\ **Post date:** [September 30, 2020, 4:52pm UTC](https://forum.ansible.com/t/bind-loopback-and-default-ip/33918/12 "2020-09-30T16:52:39Z")
Stupid me I was doing it in check mode…but I tried it without it yesterday and it still wouldn’t make the changes. Thanks for your help! On to the next hurdle w/ this playbook.