diff options
Diffstat (limited to 'gemfeed')
| -rw-r--r-- | gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.gmi | 8 | ||||
| -rw-r--r-- | gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.gmi.tpl | 5 | ||||
| -rw-r--r-- | gemfeed/atom.xml | 10 |
3 files changed, 10 insertions, 13 deletions
diff --git a/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.gmi b/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.gmi index 679fa362..a442b59a 100644 --- a/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.gmi +++ b/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.gmi @@ -33,13 +33,10 @@ Table of contents: My auto-failover requirements My HA solution Only OpenBSD base installation required - !/bin/ksh - Race condition (e.g. script execution aborted in the middle of the previous run) Fairly cheap and geo-redundant Failover time and split-brain Failover support for multiple protocols Let's encrypt TLS certificates - Weekly auto-failover for Let's Encrypt automation Monitoring Rex automation More HA @@ -159,7 +156,8 @@ transform () { After the failover, the script reloads `nsd` and performs a sanity check to see if DNS still works. If not, a rollback will be performed: ```sh -# Race condition (e.g. script execution aborted in the middle of the previous run) +#! Race condition !# + if [ -f $zone_file.bak ]; then mv $zone_file.bak $zone_file fi @@ -252,7 +250,7 @@ As a solution, the CRON job responsible for the DNS failover also checks for the Which translates to: ```sh -# Weekly auto-failover for Let's Encrypt automation +#! Weekly auto-failover for Let's Encrypt automation !# local -i -r week_of_the_year=$(date +%U) if [ $(( week_of_the_year % 2 )) -eq 0 ]; then local tmp=$master diff --git a/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.gmi.tpl b/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.gmi.tpl index 71133853..f922799a 100644 --- a/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.gmi.tpl +++ b/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.gmi.tpl @@ -143,7 +143,8 @@ transform () { After the failover, the script reloads `nsd` and performs a sanity check to see if DNS still works. If not, a rollback will be performed: ```sh -# Race condition (e.g. script execution aborted in the middle of the previous run) +#! Race condition !# + if [ -f $zone_file.bak ]; then mv $zone_file.bak $zone_file fi @@ -236,7 +237,7 @@ As a solution, the CRON job responsible for the DNS failover also checks for the Which translates to: ```sh -# Weekly auto-failover for Let's Encrypt automation +#! Weekly auto-failover for Let's Encrypt automation !# local -i -r week_of_the_year=$(date +%U) if [ $(( week_of_the_year % 2 )) -eq 0 ]; then local tmp=$master diff --git a/gemfeed/atom.xml b/gemfeed/atom.xml index d1503b37..8763cb06 100644 --- a/gemfeed/atom.xml +++ b/gemfeed/atom.xml @@ -1,6 +1,6 @@ <?xml version="1.0" encoding="utf-8"?> <feed xmlns="http://www.w3.org/2005/Atom"> - <updated>2024-04-21T11:44:45+03:00</updated> + <updated>2024-04-21T11:52:49+03:00</updated> <title>foo.zone feed</title> <subtitle>To be in the .zone!</subtitle> <link href="gemini://foo.zone/gemfeed/atom.xml" rel="self" /> @@ -53,13 +53,10 @@ Table of contents: My auto-failover requirements My HA solution Only OpenBSD base installation required - !/bin/ksh - Race condition (e.g. script execution aborted in the middle of the previous run) Fairly cheap and geo-redundant Failover time and split-brain Failover support for multiple protocols Let's encrypt TLS certificates - Weekly auto-failover for Let's Encrypt automation Monitoring Rex automation More HA @@ -192,7 +189,8 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900"># Race condition (e.g. script execution aborted in the middle of the previous run)</font></i> +<pre><i><font color="#9A1900">#! Race condition !#</font></i> + <b><font color="#0000FF">if</font></b> <font color="#990000">[</font> -f <font color="#009900">$zone_file</font><font color="#990000">.</font>bak <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> mv <font color="#009900">$zone_file</font><font color="#990000">.</font>bak <font color="#009900">$zone_file</font> <b><font color="#0000FF">fi</font></b> @@ -289,7 +287,7 @@ echo <font color="#FF0000">"Failover of zone $zone to $MASTER completed"</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900"># Weekly auto-failover for Let's Encrypt automation</font></i> +<pre><i><font color="#9A1900">#! Weekly auto-failover for Let's Encrypt automation !#</font></i> <b><font color="#0000FF">local</font></b> -i -r <font color="#009900">week_of_the_year</font><font color="#990000">=</font><font color="#009900">$(</font>date <font color="#990000">+%</font>U<font color="#990000">)</font> <b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#009900">$(</font><font color="#990000">(</font> week_of_the_year <font color="#990000">%</font> <font color="#993399">2</font> <font color="#990000">))</font> -eq <font color="#993399">0</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> <b><font color="#0000FF">local</font></b> <font color="#009900">tmp</font><font color="#990000">=</font><font color="#009900">$master</font> |