equal
deleted
inserted
replaced
6 Migrate apache & cubicweb |
6 Migrate apache & cubicweb |
7 ------------------------- |
7 ------------------------- |
8 |
8 |
9 **Aim** : do the migration for N cubicweb instances hosted on a server to another with no downtime. |
9 **Aim** : do the migration for N cubicweb instances hosted on a server to another with no downtime. |
10 |
10 |
11 **Prerequisites** : have an explicit definition of the database host (not default or localhost). In our case, the database is hosted on another host. You are not migrating your pyro server. You are not using multisource (more documentation on that soon). |
11 **Prerequisites** : have an explicit definition of the database host (not default or localhost). In our case, the database is hosted on another host. |
12 |
12 |
13 **Steps** : |
13 **Steps** : |
14 |
14 |
15 1. *on new machine* : install your environment (*pseudocode*) :: |
15 1. *on new machine* : install your environment (*pseudocode*) :: |
16 |
16 |
19 2. *on old machine* : copy your cubicweb and apache configuration to the new machine :: |
19 2. *on old machine* : copy your cubicweb and apache configuration to the new machine :: |
20 |
20 |
21 scp /etc/cubicweb.d/ newmachine:/etc/cubicweb.d/ |
21 scp /etc/cubicweb.d/ newmachine:/etc/cubicweb.d/ |
22 scp /etc/apache2/sites-available/ newmachine:/etc/apache2/sites-available/ |
22 scp /etc/apache2/sites-available/ newmachine:/etc/apache2/sites-available/ |
23 |
23 |
24 3. *on new machine* : give new ids to pyro registration so the new instances can register :: |
24 3. *on new machine* : start your instances :: |
25 |
|
26 cd /etc/cubicweb.d/ ; sed -i.bck 's/^pyro-instance-id=.*$/\02/' */all-in-one.conf |
|
27 |
|
28 4. *on new machine* : start your instances :: |
|
29 |
25 |
30 cubicweb start |
26 cubicweb start |
31 |
27 |
32 5. *on new machine* : enable sites and modules for apache and start it, test it using by modifying your /etc/host file. |
28 4. *on new machine* : enable sites and modules for apache and start it, test it using by modifying your /etc/host file. |
33 |
29 |
34 6. change dns entry from your oldmachine to newmachine |
30 5. change dns entry from your oldmachine to newmachine |
35 |
31 |
36 7. shutdown your *old machine* (if it doesn't host other services or your database) |
32 6. shutdown your *old machine* (if it doesn't host other services or your database) |
37 |
33 |
38 8. That's it. |
34 7. That's it. |
39 |
35 |
40 **Possible enhancements** : use right from the start a pound server behind your apache, that way you can add backends and smoothily migrate by shuting down backends that pound will take into account. |
36 **Possible enhancements** : use right from the start a pound server behind your apache, that way you can add backends and smoothily migrate by shuting down backends that pound will take into account. |
41 |
37 |
42 Migrate apache & cubicweb with pyro |
|
43 ----------------------------------- |
|
44 |
38 |
45 FIXME TODO |
|
46 |
|