Well, Philetairos seized control of Pergamon during the 280s, but he submitted his little fiefdom voluntarily to the Seleucids in 281 BC, following the death of Seleukos Nikator. Eumenes would later defeat Antiochos I at the battle of Sardes in 261 BC before Attalos I would name himself king after the battle of the Kaikos sources. So Pergamon became independent in 261 BC and became a kingdom in 233 BC, in 280 BC Philetairos was probably acting like a satrap for the Seleucids.
As for Kyrene, it was annected by the Ptolemies in the late 4th century. During the early 280s Magas, the half brother of the later Ptolemaios II, was appointed satrap of Kyrene after having defeated a five-year-revolt there. In 283 BC, upon the death of Ptolemaios I, he extended his independence. He would still serve the pharao loyally until 276 BC, when he rebelled against Ptolemaic rule and established an independent Kyrenian kingdom until his death in 250 BC (it was probably only fully subdued a few years later).
Plutarch mentions his usage of Greek (Peloponnesian) mercenaries. Apart from that, this excerpt from Pausanias 1, 7 seems to be the best source we've got:
7.
This Ptolemy fell in love with Arsinoe, his full sister, and married her, violating herein Macedonian custom, but following that of his Egyptian subjects. Secondly he put to death his brother Argaeus, who was, it is said, plotting against him; and he it was who brought down from Memphis the corpse of Alexander. He put to death another brother also, son of Eurydice, on discovering that he was creating disaffection among the Cyprians. Then Magas, the half-brother of Ptolemy, who had been entrusted with the governorship of Cyrene by his mother Berenice—she had borne him to Philip, a Macedonians but of no note and of lowly origin—induced the people of Cyrene to revolt from Ptolemy and marched against Egypt.
[2] Ptolemy fortified the entrance into Egypt and awaited the attack of the Cyrenians. But while on the march Magas was in formed that the Marmaridae,a tribe of Libyan nomads, had revolted, and thereupon fell back upon Cyrene. Ptolemy resolved to pursue, but was checked owing to the following circumstance. When he was preparing to meet the attack of Magas, he engaged mercenaries, including some four thousand Gauls. Discovering that they were plotting to seize Egypt, he led them through the river to a deserted island. There they perished at one another's hands or by famine.
[3] Magas, who was married to Apame, daughter of Antiochus, son of Seleucus, persuaded Antiochus to break the treaty which his father Seleucus had made with Ptolemy and to attack Egypt. When Antiochus resolved to attack, Ptolemy dispatched forces against all the subjects of Antiochus, freebooters to overrun the lands of the weaker, and an army to hold back the stronger, so that Antiochus never had an opportunity of attacking Egypt (...)
And Polyaenus:
[28] Magas.
# When Magas left Cyrene, to go on a foreign expedition, he left his friends in charge of the city. But he stored the missiles and other weapons of war in the fortress, and dismantled the walls; so that, if any revolution should be attempted in his absence, he should find it easy to re-enter the city on his return.
2 When Magas captured Paraetonium, he order the guards to kindle a "friendly" fire signal both in the evening, and early in the morning. By this deception, he advanced without resistance into the surrounding country, as far as the place that is called Chi.
