[ClusterLabs] The proxy server received an invalid response from an upstream server.
Jason Long
hack3rcon at yahoo.com
Mon Mar 22 09:48:05 EDT 2021
Hi Klaus,
Thank you.
I created another thread about it. Please look at that.
On Monday, March 22, 2021, 02:18:38 PM GMT+4:30, Klaus Wenninger <kwenning at redhat.com> wrote:
On 3/18/21 3:45 PM, Ken Gaillot wrote:
> "Clusters from Scratch" is exactly that. The currently published one is
> based on CentOS 7:
>
> https://clusterlabs.org/pacemaker/doc/en-US/Pacemaker/2.0/html-single/Clusters_from_Scratch/
>
> A new one based on CentOS Stream 8 will be published with the next
> release. A preview is available:
>
> http://people.redhat.com/~kgaillot/pacemaker/doc/2.0/Clusters_from_Scratch/html/
>
> You only need to do through Chapter 7 to get a clustered web server
> working. After that, you need some way to synchronize the web
> documents; the walk-through demonstrates DRBD and GFS, but you can use
> any means available to you.
As I understood it just the proxy should be clustered.
So I'd guess a synchronization of the webserver-data isn't needed
as the actual webserver is running outside the cluster on node3.
Maybe Jason you can ack that view.
Regards,
Klaus
>
> On Thu, 2021-03-18 at 14:31 +0000, Jason Long wrote:
>> Thank you, but please forget node3. I want to make a cluster with two
>> nodes. Both nodes has Apache web server and when a node stopped, then
>> another node work.
>> Can you show me a good tutorial about it? Or can you write it here?
>>
>>
>>
>>
>>
>>
>> On Thursday, March 18, 2021, 01:40:22 AM GMT+3:30, Ken Gaillot <
>> kgaillot at redhat.com> wrote:
>>
>>
>>
>>
>>
>> On Wed, 2021-03-17 at 20:37 +0000, Jason Long wrote:
>>> The 192.168.1.4 is my secondary VM.
>>> I want to follow "
>>> https://www.digitalocean.com/community/tutorials/how-to-set-up-an-apache-active-passive-cluster-using-pacemaker-on-centos-7
>>> " tutorial.
>>> At "Step 8 — Adding the Apache Resource", I got below problems:
>> Verify that you did Step 2 on node3. With the cluster stopped, start
>> the web server manually, and use curl or wget to verify that you can
>> successfully get the /server-status URL from the local host.
>>
>> Step 6 is a bad idea. You should configure and test fencing instead,
>> before adding resources.
>>
>>> 1- In the tutorial example, you will see:
>>>
>>>
>>> Full list of resources:
>>> * Cluster_VIP (ocf::heartbeat:IPaddr2): Started webnode01
>>> * WebServer (ocf::heartbeat:apache): Started webnode02
>>>
>>>
>>> But mine:
>>>
>>>
>>> Full List of Resources:
>>> * Cluster_VIP (ocf::heartbeat:IPaddr2): Started node1
>>> * WebServer (ocf::heartbeat:apache): Starting node2
>>>
>>>
>>> Please be careful about "Started" and "Starting" words.
>>>
>>>
>>> 2- I wanted to restart the Apache resource, but:
>>>
>>>
>>> [root at node1 log]# sudo pcs resource restart WebServer
>>> Error: crm_resource: Error performing operation: Timer expired
>>> Set 'WebServer' option: id=WebServer-meta_attributes-target-role
>>> set=WebServer-meta_attributes name=target-role value=stopped
>>> Waiting for 1 resources to stop:
>>> * WebServer
>>> Deleted 'WebServer' option: id=WebServer-meta_attributes-target-
>>> role
>>> name=target-role
>>> Waiting for 1 resources to start again:
>>> * WebServer
>>> Could not complete restart of WebServer, 1 resources remaining
>>> * WebServer
>>>
>>>
>>>
>>> Logs are:
>>> https://paste.ubuntu.com/p/nHfTRFh4RD/
>>>
>>>
>>>
>>> Why?
>>>
>>>
>>>
>>>
>>>
>>> On Wednesday, March 17, 2021, 11:42:11 PM GMT+3:30, Jason Long <
>>> hack3rcon at yahoo.com> wrote:
>>>
>>>
>>>
>>>
>>>
>>> Yes, I want Apache always on node3, and then the reverse proxy can
>>> move between node1 and node2.
>>> Please see my new efforts.
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Wednesday, March 17, 2021, 11:38:01 PM GMT+3:30, Ken Gaillot <
>>> kgaillot at redhat.com> wrote:
>>>
>>>
>>>
>>>
>>>
>>> It sounds to me like your intent is to have apache always on node3,
>>> and
>>> then the reverse proxy can move between node1 and node2. The
>>> floating
>>> IP address, which is what users use to contact the site, is
>>> associated
>>> with the reverse proxy.
>>>
>>> In any case, the floating IP should be an *additional* IP that is
>>> not
>>> the primary IP address of any host. The cluster will associate this
>>> IP
>>> with whichever node is running the proxy.
>>>
>>> If the above scenario is what you want, then you can ban the web
>>> server
>>> from node1 and node2, create a group consisting of the floating IP
>>> and
>>> the reverse proxy, and ban the group from node3.
>>>
>>> On Wed, 2021-03-17 at 18:51 +0000, Jason Long wrote:
>>>> Hello,
>>>> I changed "IP" to my Apache web server:
>>>>
>>>> $ sudo pcs resource update floating_ip ocf:heartbeat:IPaddr2
>>>> ip=192.168.1.4 cidr_netmask=24 op monitor interval=5s
>>>>
>>>> And did:
>>>>
>>>> $ sudo pcs status
>>>> Cluster name: mycluster
>>>> Cluster Summary:
>>>> * Stack: corosync
>>>> * Current DC: node1 (version 2.0.5-10.fc33-ba59be7122) -
>>>> partition
>>>> with quorum
>>>> * Last updated: Wed Mar 17 21:55:58 2021
>>>> * Last change: Wed Mar 17 21:55:02 2021 by root via cibadmin
>>>> on
>>>> node1
>>>> * 2 nodes configured
>>>> * 2 resource instances configured
>>>>
>>>> Node List:
>>>> * Online: [ node1 node2 ]
>>>> Full List of Resources:
>>>> * floating_ip (ocf::heartbeat:IPaddr2): Started node1
>>>> * http_server (ocf::heartbeat:apache): Stopped
>>>>
>>>> Failed Resource Actions:
>>>> * http_server_start_0 on node1 'error' (1): call=10,
>>>> status='Timed
>>>> Out', exitreason='', last-rc-change='2021-03-17 21:50:31 +03:30',
>>>> queued=0ms, exec=40002ms
>>>> * http_server_start_0 on node2 'error' (1): call=11,
>>>> status='Timed
>>>> Out', exitreason='', last-rc-change='2021-03-17 21:51:11 +03:30',
>>>> queued=0ms, exec=40002ms
>>>>
>>>> Daemon Status:
>>>> corosync: active/enabled
>>>> pacemaker: active/enabled
>>>> pcsd: active/enabled
>>>>
>>>>
>>>> Why "http_server (ocf::heartbeat:apache): Stopped" ?
>>>>
>>>> I think you misunderstand my goal, please examine "
>>>> https://paste.ubuntu.com/p/Nx2ptqZjFg/". I just have one Apache
>>>> server and two Reverse Proxy servers, when a Reverse Proxy server
>>>> stopped then another one work.
>>>> In this scenario, is group resources mandatory?
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Wednesday, March 17, 2021, 01:50:35 AM GMT+3:30, Reid Wahl <
>>>> nwahl at redhat.com> wrote:
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Tue, Mar 16, 2021 at 3:13 PM Jason Long <hack3rcon at yahoo.com>
>>>> wrote:
>>>>> I'm using CentOS.
>>>> Ah okay. I think I had made an assumption based on the pastebins
>>>> URLs.
>>>>
>>>>> Thus, I must use my Apache web server IP instead of node2?
>>>> Yes, it's never a good idea to configure a node's constant IP
>>>> address
>>>> within an IPaddr2 resource. That will almost inevitably result in
>>>> Pacemaker taking down the IP address at some point.
>>>>
>>>> For an IPaddr2 resource, you configure the IP address that's free
>>>> to
>>>> move around the cluster. In this case, that's the Apache web
>>>> server
>>>> IP. Node2's IP address isn't free to move to node1.
>>>>
>>>>> About resource group, is you mean "
>>>>> https://clusterlabs.org/pacemaker/doc/en-US/Pacemaker/2.0/html-single/Pacemaker_Explained/index.html#group-resources
>>>>> " ?
>>>> Yes, that's correct. And if you have access to the Red Hat docs,
>>>> you
>>>> can also refer to the following:
>>>> - Chapter 5. Configuring an active/passive Apache HTTP server
>>>> in
>>>> a
>>>> Red Hat High Availability cluster (
>>>> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/configuring_and_managing_high_availability_clusters/assembly_configuring-active-passive-http-server-in-a-cluster-configuring-and-managing-high-availability-clusters
>>>> )
>>>> - Configuring resource groups (
>>>> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/configuring_and_managing_high_availability_clusters/assembly_configuring-cluster-resources-configuring-and-managing-high-availability-clusters#assembly_resource-groups-configuring-cluster-resources
>>>> )
>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Wednesday, March 17, 2021, 01:10:33 AM GMT+3:30, Reid Wahl <
>>>>> nwahl at redhat.com> wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Tue, Mar 16, 2021 at 1:47 PM Jason Long <hack3rcon at yahoo.com
>>>>> wrote:
>>>>>> Thanks.
>>>>>> Excuse me, did you read how did I set my cluster up? Please
>>>>>> look
>>>>>> at: https://paste.ubuntu.com/p/Nx2ptqZjFg/
>>>>>> Which part of my configuration is wrong?
>>>>> 1. You configured the IPaddr2 resource to use node2's IP
>>>>> address
>>>>> (192.168.1.10) instead of the floating IP address
>>>>> (192.168.1.4).
>>>>> 2. You didn't configure the resources into a resource group. As
>>>>> a
>>>>> result, the floating IP may end up on a different node compared
>>>>> to
>>>>> the web server.
>>>>>
>>>>> Both of these are explained in more detail in previous emails
>>>>> :)
>>>>>
>>>>> I also thought that Ubuntu used /etc/apache2 instead of
>>>>> /etc/httpd,
>>>>> but maybe not.
>>>>>
>>>>>> Both of the main and secondary servers are an Apache
>>>>>> Reverse
>>>>>> Proxy Server. I want when main server failed, then the
>>>>>> secondary
>>>>>> server handle the requests.
>>>>>> How can I achieve this goal?
>>>>> I don't know anything about reverse proxies, sorry. I can only
>>>>> really comment on general principles here, like "an IPaddr2
>>>>> resource shouldn't manage an IP address that's expected to stay
>>>>> on
>>>>> one particular node" and "if two resources need to run on the
>>>>> same
>>>>> node and start in a particular order, they need to be grouped."
>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Tuesday, March 16, 2021, 11:57:13 PM GMT+3:30, Reid Wahl <
>>>>>> nwahl at redhat.com> wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Tue, Mar 16, 2021 at 1:03 PM Jason Long <
>>>>>> hack3rcon at yahoo.com
>>>>>> wrote:
>>>>>>> Thanks.
>>>>>>> I changed it to the IP address of node2 and I can see my
>>>>>>> Apache
>>>>>>> Web Server.
>>>>>> Like I said, you don't want to do that. You should change it
>>>>>> to
>>>>>> an IP address that you want the cluster to manage. If you set
>>>>>> it
>>>>>> to node2's IP address, Pacemaker will try to remove node2's
>>>>>> IP
>>>>>> address and assign it to node1 if the resource fails over to
>>>>>> node1. If node2 is using that address for anything else
>>>>>> (e.g.,
>>>>>> corosync communication), then that would be a big problem.
>>>>>>
>>>>>> The managed floating IP address should be an IP address
>>>>>> dedicated
>>>>>> to the web server, that can move between cluster nodes as
>>>>>> needed.
>>>>>>
>>>>>>>
>>>>>>> $ sudo pcs resource update floating_ip
>>>>>>> ocf:heartbeat:IPaddr2
>>>>>>> ip=192.168.1.10 cidr_netmask=24 op monitor interval=5s
>>>>>>>
>>>>>>> Now, I want to test my cluster and stop node1. On node1 I
>>>>>>> did:
>>>>>>>
>>>>>>> # pcs cluster stop http_server
>>>>>>> Error: nodes 'http_server' do not appear to exist in
>>>>>>> configuration
>>>>>>>
>>>>>>> Why?
>>>>>> The `pcs cluster stop` command stops pacemaker and corosync
>>>>>> services on a particular node (the local node if you don't
>>>>>> specify one). You've specified `http_server`, so the command
>>>>>> is
>>>>>> trying to connect to a node called "http_server" and stop
>>>>>> services there.
>>>>>>
>>>>>> If you want to stop node1, then run `pcs cluster stop node1`.
>>>>>>
>>>>>> If you want to prevent the http_server resource from running
>>>>>> anywhere, then run `pcs resource disable http_server`.
>>>>>>
>>>>>> If you want to prevent the http_server resource from running
>>>>>> on
>>>>>> node2, then run `pcs resource ban http_server node2`. If you
>>>>>> want
>>>>>> to remove that constraint later and allow it to run on node2
>>>>>> again, run `pcs resource clear http_server`.
>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Tuesday, March 16, 2021, 11:05:48 PM GMT+3:30, Reid Wahl
>>>>>>> <
>>>>>>> nwahl at redhat.com> wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Tue, Mar 16, 2021 at 12:11 PM Jason Long <
>>>>>>> hack3rcon at yahoo.com> wrote:
>>>>>>>> Thank you so much.
>>>>>>>> I forgot to ask a question. In below command, what should
>>>>>>>> be
>>>>>>>> the ip="IP" value? Is it the IP address of my Apache or
>>>>>>>> node2?
>>>>>>>>
>>>>>>>> $ sudo pcs resource create floating_ip
>>>>>>>> ocf:heartbeat:IPaddr2
>>>>>>>> ip="IP" cidr_netmask=24 op monitor interval=5s
>>>>>>> It's the IP address that you want the cluster to manage.
>>>>>>> That
>>>>>>> sounds like it would be your web server IP address. You
>>>>>>> definitely don't want to set the ip option to some IP
>>>>>>> address
>>>>>>> that resides statically on one of the nodes. An IP managed
>>>>>>> by
>>>>>>> an IPaddr2 resource can be moved around the cluster.
>>>>>>>
>>>>>>> If that's your web server IP address, you'll also want to
>>>>>>> put
>>>>>>> it in a resource group with your apache resource.
>>>>>>> Otherwise,
>>>>>>> the floating IP may end up on a different node from your
>>>>>>> web
>>>>>>> server, which renders the IP address useless.
>>>>>>>
>>>>>>> For resources that already exist, you can use the `pcs
>>>>>>> resource
>>>>>>> group add` command. For example: `pcs resource group add
>>>>>>> apache_group floating_ip http_server`.
>>>>>>>
>>>>>>> For resources that you're newly creating, you can use the `
>>>>>>> --group` option of `pcs resource create`. For example, `pcs
>>>>>>> resource create new_IP IPaddr2 <options> --group
>>>>>>> apache_group`.
>>>>>>> That adds the new resource to the end of the group.
>>>>>>>
>>>>>>> The pcs help outputs have more details on these options.
>>>>>>>
>>>>>>> If you're new to resource groups, you can check them out
>>>>>>> here:
>>>>>>> https://clusterlabs.org/pacemaker/doc/en-US/Pacemaker/2.0/html-single/Pacemaker_Explained/index.html#group-resources
>>>>>>>
>>>>>>>>
>>>>>>>> Logs are:
>>>>>>>> https://paste.ubuntu.com/p/86YHRX6rdC/
>>>>>>>> https://paste.ubuntu.com/p/HHVzNvhRM2/
>>>>>>>> https://paste.ubuntu.com/p/kNxynhfyc2/
>>>>>>>>
>>>>>>>> I have not any "status.conf" file:
>>>>>>>>
>>>>>>>> # cat /etc/httpd/conf.d/status.conf
>>>>>>>> cat: /etc/httpd/conf.d/status.conf: No such file or
>>>>>>>> directory
>>>>>>>>
>>>>>>> If you're using Ubuntu, I believe it's in a different
>>>>>>> location
>>>>>>> -- somewhere in /etc/apache2 if memory serves.
>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Tuesday, March 16, 2021, 07:20:32 PM GMT+3:30, Klaus
>>>>>>>> Wenninger <kwenning at redhat.com> wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On 3/16/21 3:18 PM, Ken Gaillot wrote:
>>>>>>>>> On Tue, 2021-03-16 at 09:42 +0000, Jason Long wrote:
>>>>>>>>>> Hello,
>>>>>>>>>> I want to launch a Clustering for my Apache Web
>>>>>>>>>> Server.
>>>>>>>>>> I
>>>>>>>>>> have three
>>>>>>>>>> servers:
>>>>>>>>>>
>>>>>>>>>> 1- Main server that acts as a Reverse Proxy
>>>>>>>>>> 2- The secondary server that when my main server
>>>>>>>>>> stopped,
>>>>>>>>>> work as a
>>>>>>>>>> Reverse Proxy
>>>>>>>>>> 3- Apache Web Server
>>>>>>>>>>
>>>>>>>>>> The client ---> Reverse Proxy Server ---> Apache Web
>>>>>>>>>> Server
>>>>>>>>>>
>>>>>>>>>> The IP addresses are:
>>>>>>>>>> Main Server (node1) : 192.168.1.3
>>>>>>>>>> Secondary Server (node2) : 192.168.1.10
>>>>>>>>>> Apache Web Server (node3) : 192.168.1.4
>>>>>>>>>>
>>>>>>>>>> On the main and secondary servers, I installed and
>>>>>>>>>> configured Apache
>>>>>>>>>> as a Reverse Proxy Server. I created a Virtual Host
>>>>>>>>>> and
>>>>>>>>>> my Reverse
>>>>>>>>>> Configuration is:
>>>>>>>>>>
>>>>>>>>>> <VirtualHost *:80>
>>>>>>>>>> ProxyPreserveHost On
>>>>>>>>>> ProxyPass / http://192.168.1.4/
>>>>>>>>>> ProxyPassReverse / http://192.168.1.4/
>>>>>>>>>> </VirtualHost>
>>>>>>>>>>
>>>>>>>>>> As you see, it forward all requests to the Apache Web
>>>>>>>>>> Server.
>>>>>>>>>>
>>>>>>>>>> I installed and configured Corosync and Pacemaker as
>>>>>>>>>> below:
>>>>>>>>>>
>>>>>>>>>> On the main and secondary servers, I opened
>>>>>>>>>> "/etc/hosts"
>>>>>>>>>> files and
>>>>>>>>>> added my servers IP addresses and host names:
>>>>>>>>>>
>>>>>>>>>> 192.168.1.3 node1
>>>>>>>>>> 192.168.1.10 node2
>>>>>>>>>>
>>>>>>>>>> Then installed Pacemaker, Corosync, and Pcs packages
>>>>>>>>>> on
>>>>>>>>>> both servers
>>>>>>>>>> and started its service:
>>>>>>>>>>
>>>>>>>>>> $ sudo yum install corosync pacemaker pcs
>>>>>>>>>> $ sudo systemctl enable pcsd
>>>>>>>>>> $ sudo systemctl start pcsd
>>>>>>>>>> $ sudo systemctl status pcsd
>>>>>>>>>>
>>>>>>>>>> Then Configured the firewall on both servers as
>>>>>>>>>> below:
>>>>>>>>>>
>>>>>>>>>> $ sudo firewall-cmd --permanent --add-service=http
>>>>>>>>>> $ sudo firewall-cmd --permanent --add-service=high-
>>>>>>>>>> availability
>>>>>>>>>> $ sudo firewall-cmd --reload
>>>>>>>>>>
>>>>>>>>>> After it, on both servers, I created a password for
>>>>>>>>>> the
>>>>>>>>>> "hacluster"
>>>>>>>>>> user, then on the main server:
>>>>>>>>>>
>>>>>>>>>> $ sudo pcs host auth node1 node2 -u hacluster -p
>>>>>>>>>> password
>>>>>>>>>> node1: Authorized
>>>>>>>>>> node2: Authorized
>>>>>>>>>>
>>>>>>>>>> Then:
>>>>>>>>>> $ sudo pcs cluster setup mycluster node1 node2 --
>>>>>>>>>> start
>>>>>>>>>> --
>>>>>>>>>> enable
>>>>>>>>>> $ sudo pcs cluster enable --all
>>>>>>>>>> node1: Cluster Enabled
>>>>>>>>>> node2: Cluster Enabled
>>>>>>>>>>
>>>>>>>>>> After it:
>>>>>>>>>> $ sudo pcs cluster start --all
>>>>>>>>>> node1: Starting Cluster...
>>>>>>>>>> node2: Starting Cluster...
>>>>>>>>>>
>>>>>>>>>> I checked my clusters with below command and they are
>>>>>>>>>> up
>>>>>>>>>> and running:
>>>>>>>>>> $ sudo pcs status
>>>>>>>>>> ...
>>>>>>>>>> Node List:
>>>>>>>>>> * Online: [ node1 node2 ]
>>>>>>>>>> ....
>>>>>>>>>>
>>>>>>>>>> And finally, I tried to add a resource:
>>>>>>>>>> $ sudo pcs resource create floating_ip
>>>>>>>>>> ocf:heartbeat:IPaddr2
>>>>>>>>>> ip=192.168.1.4 cidr_netmask=24 op monitor interval=5s
>>>>>>>> Shouldn't the virtual-IP moved between node1 & node2 be
>>>>>>>> different from the IP used for the web-server on node3?
>>>>>>>> And having just one instance of the reverse-proxy that
>>>>>>>> should probably be colocated with the virtual-IP - right?
>>>>>>>>
>>>>>>>> Klaus
>>>>>>>>
>>>>>>>>>> $ sudo pcs resource create http_server
>>>>>>>>>> ocf:heartbeat:apache
>>>>>>>>>> configfile="/etc/httpd/conf.d/VirtualHost.conf" op
>>>>>>>>>> monitor
>>>>>>>>>> timeout="5s" interval="5s"
>>>>>>>>>>
>>>>>>>>>> On both servers (Main and Secondary), pcsd service is
>>>>>>>>>> enabled, but
>>>>>>>>>> when I want to see my Apache Web Server then it show
>>>>>>>>>> me
>>>>>>>>>> below error:
>>>>>>>>>>
>>>>>>>>>> Proxy Error
>>>>>>>>>> The proxy server received an invalid response from an
>>>>>>>>>> upstream
>>>>>>>>>> server.
>>>>>>>>>> The proxy server could not handle the request
>>>>>>>>>> Reason: Error reading from remote server
>>>>>>>>>>
>>>>>>>>>> Why? Which parts of my configuration is wrong?
>>>>>>>>>> The output of "sudo pcs status" command is:
>>>>>>>>>> https://paste.ubuntu.com/p/V9KvHKwKtC/
>>>>>>>>>>
>>>>>>>>>> Thank you.
>>>>>>>>> The thing to investigate is:
>>>>>>>>>
>>>>>>>>> Failed Resource Actions:
>>>>>>>>> * http_server_start_0 on node2 'error' (1):
>>>>>>>>> call=12,
>>>>>>>>> status='Timed Out', exitreason='', last-rc-
>>>>>>>>> change='2021-
>>>>>>>>> 03-
>>>>>>>>> 16 12:28:14 +03:30', queued=0ms, exec=40004ms
>>>>>>>>> * http_server_start_0 on node1 'error' (1):
>>>>>>>>> call=14,
>>>>>>>>> status='Timed Out', exitreason='', last-rc-
>>>>>>>>> change='2021-
>>>>>>>>> 03-
>>>>>>>>> 16 12:28:52 +03:30', queued=0ms, exec=40002ms
>>>>>>>>>
>>>>>>>>> The web server start timed out. Check the system,
>>>>>>>>> pacemaker
>>>>>>>>> and apache
>>>>>>>>> logs around those times for any hints.
>>>>>>>>>
>>>>>>>>> Did you enable and test the status URL? The
>>>>>>>>> ocf:heartbeat:apache agent
>>>>>>>>> checks the status as part of its monitor (which is also
>>>>>>>>> done for
>>>>>>>>> start). It would be something like:
>>>>>>>>>
>>>>>>>>> cat <<-END >/etc/httpd/conf.d/status.conf
>>>>>>>>> <Location /server-status>
>>>>>>>>> SetHandler server-status
>>>>>>>>> Require local
>>>>>>>>> </Location>
>>>>>>>>> END
>>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Manage your subscription:
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>>>>>>>>
>>>>>>>> ClusterLabs home: https://www.clusterlabs.org/
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Manage your subscription:
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>>>>>>>> ClusterLabs home: https://www.clusterlabs.org/
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Regards,
>>>>>>>
>>>>>>> Reid Wahl, RHCA
>>>>>>> Senior Software Maintenance Engineer, Red Hat
>>>>>>> CEE - Platform Support Delivery - ClusterHA
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Manage your subscription:
>>>>>>> https://lists.clusterlabs.org/mailman/listinfo/users
>>>>>>>
>>>>>>> ClusterLabs home: https://www.clusterlabs.org/
>>>>>>> _______________________________________________
>>>>>>> Manage your subscription:
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>>>>>>> ClusterLabs home: https://www.clusterlabs.org/
>>>>>>>
>>>>>>
>>>>>> --
>>>>>> Regards,
>>>>>>
>>>>>> Reid Wahl, RHCA
>>>>>> Senior Software Maintenance Engineer, Red Hat
>>>>>> CEE - Platform Support Delivery - ClusterHA
>>>>>>
>>>>>> _______________________________________________
>>>>>> Manage your subscription:
>>>>>> https://lists.clusterlabs.org/mailman/listinfo/users
>>>>>>
>>>>>> ClusterLabs home: https://www.clusterlabs.org/
>>>>>> _______________________________________________
>>>>>> Manage your subscription:
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>>>>>> ClusterLabs home: https://www.clusterlabs.org/
>>>>>>
>>>>>
>>>>> --
>>>>> Regards,
>>>>>
>>>>> Reid Wahl, RHCA
>>>>> Senior Software Maintenance Engineer, Red Hat
>>>>> CEE - Platform Support Delivery - ClusterHA
>>>>>
>>>>> _______________________________________________
>>>>> Manage your subscription:
>>>>> https://lists.clusterlabs.org/mailman/listinfo/users
>>>>>
>>>>> ClusterLabs home: https://www.clusterlabs.org/
>>>>> _______________________________________________
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>>>>
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